diff --git a/.gitignore b/.gitignore deleted file mode 100644 index e86fe25..0000000 --- a/.gitignore +++ /dev/null @@ -1,69 +0,0 @@ -# Logs -logs -*.log -npm-debug.log* -yarn-debug.log* -yarn-error.log* - -# Runtime data -pids -*.pid -*.seed -*.pid.lock - -# Directory for instrumented libs generated by jscoverage/JSCover -lib-cov - -# Coverage directory used by tools like istanbul -coverage - -# nyc test coverage -.nyc_output - -# Grunt intermediate storage (http://gruntjs.com/creating-plugins#storing-task-files) -.grunt - -# Bower dependency directory (https://bower.io/) -bower_components - -# node-waf configuration -.lock-wscript - -# Compiled binary addons (http://nodejs.org/api/addons.html) -build/Release - -# Dependency directories -node_modules/ -jspm_packages/ - -# Typescript v1 declaration files -typings/ - -# Optional npm cache directory -.npm - -# Optional eslint cache -.eslintcache - -# Optional REPL history -.node_repl_history - -# Output of 'npm pack' -*.tgz - -# dotenv environment variables file -.env - -# gatsby files -.cache/ -public - -# Mac files -.DS_Store - -# Yarn -yarn-error.log -.pnp/ -.pnp.js -# Yarn Integrity file -.yarn-integrity diff --git a/.prettierrc b/.prettierrc deleted file mode 100644 index d27ac8e..0000000 --- a/.prettierrc +++ /dev/null @@ -1,7 +0,0 @@ -{ - "endOfLine": "lf", - "semi": false, - "singleQuote": true, - "tabWidth": 2, - "trailingComma": "es5" -} diff --git a/0ffd815739fc50656ba53c98cd2c5e95/terms-grid-track-2c92ad8f-eb75-4478-bd56-5c198a462fa4.svg b/0ffd815739fc50656ba53c98cd2c5e95/terms-grid-track-2c92ad8f-eb75-4478-bd56-5c198a462fa4.svg new file mode 100755 index 0000000..ebeb426 --- /dev/null +++ b/0ffd815739fc50656ba53c98cd2c5e95/terms-grid-track-2c92ad8f-eb75-4478-bd56-5c198a462fa4.svg @@ -0,0 +1 @@ + \ No newline at end of file diff --git a/2ae7389f495ed49191f4bdc614afa28c/grid-column-row-start-end-01-08ab8475-9f06-46ed-a2c0-f3c3c451e677.svg b/2ae7389f495ed49191f4bdc614afa28c/grid-column-row-start-end-01-08ab8475-9f06-46ed-a2c0-f3c3c451e677.svg new file mode 100755 index 0000000..4a094cf --- /dev/null +++ b/2ae7389f495ed49191f4bdc614afa28c/grid-column-row-start-end-01-08ab8475-9f06-46ed-a2c0-f3c3c451e677.svg @@ -0,0 +1 @@ + \ No newline at end of file diff --git a/404.html b/404.html new file mode 100644 index 0000000..1a024ec --- /dev/null +++ b/404.html @@ -0,0 +1 @@ +404: Not Found | Cube Blog

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Not Found

You just hit a route that doesn't exist... the sadness.

\ No newline at end of file diff --git a/404/index.html b/404/index.html new file mode 100644 index 0000000..09ea330 --- /dev/null +++ b/404/index.html @@ -0,0 +1 @@ +404: Not Found | Cube Blog

Cube Blog

Not Found

You just hit a route that doesn't exist... the sadness.

\ No newline at end of file diff --git a/57713be2cf9b38a714105db8e0a517a9/template-columns-rows-01-9ff80498-a9b2-4059-bdd1-e1bca49a62b0.svg b/57713be2cf9b38a714105db8e0a517a9/template-columns-rows-01-9ff80498-a9b2-4059-bdd1-e1bca49a62b0.svg new file mode 100755 index 0000000..316c1d6 --- /dev/null +++ b/57713be2cf9b38a714105db8e0a517a9/template-columns-rows-01-9ff80498-a9b2-4059-bdd1-e1bca49a62b0.svg @@ -0,0 +1 @@ + \ No newline at end of file diff --git a/75dd4c18172ef2354f34c92af12e88c2/terms-grid-line-a0343f0a-7176-4aa0-be1c-89529a03ffbc.svg b/75dd4c18172ef2354f34c92af12e88c2/terms-grid-line-a0343f0a-7176-4aa0-be1c-89529a03ffbc.svg new file mode 100755 index 0000000..5a4bd3f --- /dev/null +++ b/75dd4c18172ef2354f34c92af12e88c2/terms-grid-line-a0343f0a-7176-4aa0-be1c-89529a03ffbc.svg @@ -0,0 +1 @@ + \ No newline at end of file diff --git a/858b9f1a36ccfd84b6804386bcaddd8a/terms-grid-cell-be3318de-d8a7-4d71-b482-ae5ac5984977.svg b/858b9f1a36ccfd84b6804386bcaddd8a/terms-grid-cell-be3318de-d8a7-4d71-b482-ae5ac5984977.svg new file mode 100755 index 0000000..28a7885 --- /dev/null +++ b/858b9f1a36ccfd84b6804386bcaddd8a/terms-grid-cell-be3318de-d8a7-4d71-b482-ae5ac5984977.svg @@ -0,0 +1 @@ + \ No newline at end of file diff --git "a/JavaScript-\345\270\270\350\247\201\345\207\275\346\225\260\346\226\271\346\263\225\346\250\241\346\213\237\345\256\236\347\216\260/index.html" "b/JavaScript-\345\270\270\350\247\201\345\207\275\346\225\260\346\226\271\346\263\225\346\250\241\346\213\237\345\256\236\347\216\260/index.html" new file mode 100644 index 0000000..e6d915f --- /dev/null +++ "b/JavaScript-\345\270\270\350\247\201\345\207\275\346\225\260\346\226\271\346\263\225\346\250\241\346\213\237\345\256\236\347\216\260/index.html" @@ -0,0 +1,330 @@ +JavaScript 常见函数方法模拟实现 | Cube Blog

Cube Blog

JavaScript 常见函数方法模拟实现

February 12, 2020 • ☕️ 6 min read

call 的模拟实现

call() 方法先指定了 this 和可选的参数值后，调用某个函数或方法，返回该函数执行的返回值。

将函数设置为对象的属性
执行该函数
在对象属性中删除该函数

Function.prototype.myCall = function (context, ...args) {
+  // 对 context 为 null 的情况做处理
+  context = context || window
+
+  // 获取调用 call 的函数，可以用 this 获取
+  context.fn = this
+
+  // 调用该函数
+  let temp = context.fn(...args)
+
+  // 在属性中删除该函数
+  delete context.fn
+
+  return temp
+}

如果不用 ES6 中的 ... 语法，可以对函数的 arguments 类数组进行参数处理

apply 的模拟实现

apply 方法与 call 方法的不同之处是，apply 接收数组形式的可选参数

  /**
+   * @param {function} context
+   * @param {array} arr
+   */
+  Function.prototype.myApply = function (context, arr) {
+    context = context || window
+    context.fn = this
+    let temp = context.fn(...arr)
+    delete context.fn
+    return temp
+  }

bind 的模拟实现

bind() 方法创建一个新的函数，在 bind() 被调用时，这个新函数的 this 被指定为 bind() 的第一个参数，而其余参数将作为新函数的参数，供调用时使用。

  Function.prototype.myBind = function (context, ...args) {
+    // 调用 bind 的不是函数，报错！
+    if (typeof this !== 'function') {
+      threw new Error('Function.prototype.myBind - what is trying to bind is not callable!')
+    }
+
+    context = context || window
+
+    // 获取调用 bind 的函数
+    const self = this
+
+    return function F(...bindArgs) {
+      const distArgs = args.concat(bindArgs)
+      // 如果返回的函数以new F()的方式调用，因为new不会被任何方式改变this指向，所以我们需要忽略传入的 this
+      if (this instanceof F) {
+        return new self(...distArgs)
+      }
+      return self.apply(context, distArgs)
+    }
+  }

bind() 方法创建的函数还可以作为构造函数来创建新对象

一个绑定函数也能使用new操作符创建对象：这种行为就像把原函数当成构造器。提供的 this 值被忽略，同时调用时的参数被提供给模拟函数。

new

new 运算符创建一个用户定义的对象类型的实例或具有构造函数的内置对象类型之一

/**
+ * 创建一个空的简单JavaScript对象（即{}）；
+ * 链接该对象（即设置该对象的构造函数）到另一个对象 ；
+ * 将步骤1新创建的对象作为this的上下文 ；
+ * 如果该函数没有返回对象，则返回this。
+ */
+
+const _new = (_Contructor, ...args) => {
+  // 1.创建一个空的简单JavaScript对象（即{}）；
+  const obj = {}
+  // 2.链接该对象（即设置该对象的构造函数）到另一个对象 ；
+  Object.setPrototypeOf(obj, _Contructor.prototype)
+  // 3.将步骤1新创建的对象作为this的上下文 ；
+  const ret = _Contructor.apply(obj, args)
+  //4.如果该函数没有返回对象，则返回this。
+  return ret instanceof Object ? ret : this
+}

节流 throttle

节流指的是，如果持续触发事件，每隔一段事件，执行一次事件

当触发事件时，取出当前的时间戳，减去之前的时间戳（初始为0）。如果大于之前设置的时间周期，则执行函数，并更新时间戳为当前时间戳；如果小于时间周期，就不执行函数。

  // 使用时间戳实现
+  function throttle(func, delay) {
+    let previous = 0
+    return function(...args) {
+      const now = +new Date()
+      const context = this
+      if (now - previous > delay) {
+        func.apply(context, args)
+        previous = now
+      }
+    }
+  }

特点：事件会立即执行，但是停止触发后不能再执行。

在触发事件时，设置一个定时器，再次触发事件时，如果定时器存在，就不执行；直到定时器执行，然后执行函数，清空定时器。

  // 使用定时器实现
+  function throttle(func, delay) {
+    let timeout
+    let previous = 0
+
+    return function(...args) {
+      const context = this
+
+      if (!timeout) {
+        timeout = setTimeout(function() {
+          timeout = null
+          func.apply(this, args)
+        }, delay)
+      }
+    }
+  }

特点：事件会在 n 秒后第一次执行，事件停止触发后依然会执行一次。

leading: false 表示禁用第一次执行

trailing: false 表示禁用停止触发的回调

  function throttle(func, delay, options) {
+    let timeout, context, args, result
+    let previous = 0
+
+    if (!options) {
+      options = {}
+    }
+
+    const later = function() {
+      previous = options.leading === false ? 0 : new Date().getTime()
+      timeout = null
+      func.apply(context, args)
+    }
+
+    const throttled = function() {
+      const now = new Date().getTime()
+      if (!previous && options.leading === false) {
+        previous = now
+      }
+
+      // 下次触发 func 剩余的时间
+      let remaining = delay - (now - previous)
+      context = this
+      args = arguments
+
+      if (remaining <=0 || remaining > delay) {
+        if (timeout) {
+          clearTimeout(timeout)
+          timeout = null
+        }
+
+        previous = now
+        func.apply(context, args)
+
+        if (!timeout) {
+          context = args = null
+        }
+      } else if (!timeout && options.trailing !== false) {
+        timeout = setTimeout(later, remaining)
+      }
+    }
+
+    throttled.cancel = function() {
+      clearTimeout(timeout)
+      previous = 0
+      timeout = null
+    }
+
+    return throttled
+  }

防抖 debounce

  function debounce(func, delay, immediate) {
+    let timeout
+    return function(...args) {
+      const context = this
+
+      if (timeout) {
+        clearTimeout(timeout)
+      }
+
+      if (immediate) {
+        // 如果已经执行了，就不再执行了
+        const callNow = !timeout
+        timeout = setTimeout(function() {
+          timeout = null
+        }, delay)
+
+        if (callNow) {
+          func.apply(context, args)
+        }
+      } else {
+        timeout = setTimeout(function() {
+          func.apply(context, args)
+        }, delay)
+      }
+    }
+  }

Promise

Promise 构造函数传入的参数是一个执行函数。

内部使用 status 记录内部状态（pending、resolved、rejected）
data 记录 resolve 之后得到的数据或是错误
resolve 之后需要执行的函数队列
reject 之后需要执行的函数队列
向要执行的函数 fn 传入 resolve 函数和 reject 函数，这两个函数都是异步执行的
resolve(data) 函数内部会将 status 置为 resolved，并储存 data，最后调用 resolve 队列中的函数。
reject(err) 函数将 status 置为 rejected，并存储 err，最后调用 reject 队列中的函数

  function Promise(fn) {
+    const promise = this
+    promise.status = 'PENDING'
+    promise.value = null
+    promise.reason = null
+    promise.resolves = []
+    promise.rejects = []
+
+    function resolve(value) {
+      setTimeout(function () {
+        promise.status = 'FULFILLED'
+        promise.resolves.forEach(function (cb) {
+          cb(value)
+        })
+      }, 0)
+    }
+
+    function reject(reason) {
+      setTimeout(function () {
+        promise.status = 'REJECTED'
+        promise.rejects.forEach(function (cb) {
+          cb(reason)
+        })
+      }, 0)
+    }
+
+    promise.then = function (onFulfilled, onRejected) {
+      return new Promise(function (resolve, reject) {
+        function handle(value) {
+          let result = typeof onFulfilled === 'function' && onFulfilled(value) || value
+
+          if (result instanceof Promise) {
+            result.then(function (value) {
+              resolve(value)
+            })
+          } else {
+            resolve(result)
+          }
+        }
+
+        function err(reason) {
+          let result = typeof onRejected === 'function' && onRejected(reason) || reason
+
+          reject(reason)
+        }
+
+        if (promise.status === 'PENDING') {
+          promise.resolves.push(handle)
+          promise.rejects.push(err)
+        } else if (promise.status === 'FULFILLED') {
+          handle(promise.value)
+        } else if (promise.status === 'REJECTED') {
+          err(promise.reason)
+        }
+      })
+    }
+
+    // 全部完成才完成，一个 reject 直接 reject
+    promise.all = function(promiseArr) {
+      return new Promise((resolve, reject) => {
+        // 结果数组
+        let res = []
+        let count = 0
+        function handleData(index, data) {
+          count++
+          res[index] = data
+          if (count === promiseArr.length) {
+            resolve(res)
+          }
+        }
+
+        for (let i = 0; i < promiseArr.length; i++) {
+          Promise.resolve(promiseArr[i]).then((data) => {
+            handleData(i, data)
+          }, reject)
+        }
+      })
+    }
+
+    fn(resolve, reject)
+    return this
+  }

浅拷贝

浅拷贝和赋值有什么区别呢？

对于引用数据类型（数组、对象、函数），赋值只改变了引用的指针，指向同一个对象，所以相互之间会有影响。

而浅拷贝会在堆中重新创建内存，拷贝前后对象的基本类型互不影响，但只会拷贝一层，不能对对象中的子对象进行拷贝。

// Object
+Object.assign({}, obj)
+{...obj}
+
+// Array
+Array.concat()
+Array.slice(0)
+Array.from(a1)
+[...a1]

深拷贝

  // 缺点是对 函数、null、undefined 无效，不能处理循环引用
+  JSON.parse(JSON.stringfy())
+
+  // 手写
+  function deepClone(target, map = new Map()) {
+    if (typeof target === 'object') {
+      let cloneTarget = Array.isArray(target) ? [] : {}
+
+      // 解决循环引用的问题
+      if (map.get(target)) {
+        return map.get(target)
+      }
+      map.set(target, cloneTarget)
+
+      for (const key in target) {
+        cloneTarget[key] = deepClone(target[key], map)
+      }
+      return cloneTarget
+    } else {
+      return target
+    }
+  }

参考

这个博客用于记录我个人所读所思所想，前端开发相关。

\ No newline at end of file diff --git a/LICENSE b/LICENSE deleted file mode 100644 index 1180a1c..0000000 --- a/LICENSE +++ /dev/null @@ -1,21 +0,0 @@ -The MIT License (MIT) - -Copyright (c) 2015 Gatsbyjs - -Permission is hereby granted, free of charge, to any person obtaining a copy -of this software and associated documentation files (the "Software"), to deal -in the Software without restriction, including without limitation the rights -to use, copy, modify, merge, publish, distribute, sublicense, and/or sell -copies of the Software, and to permit persons to whom the Software is -furnished to do so, subject to the following conditions: - -The above copyright notice and this permission notice shall be included in all -copies or substantial portions of the Software. - -THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR -IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, -FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE -AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER -LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, -OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE -SOFTWARE. diff --git a/README.md b/README.md deleted file mode 100644 index 3eb71bc..0000000 --- a/README.md +++ /dev/null @@ -1,97 +0,0 @@ - -

- - - -

- Gatsby's blog starter -

- -Kick off your project with this blog boilerplate. This starter ships with the main Gatsby configuration files you might need to get up and running blazing fast with the blazing fast app generator for React. - -_Have another more specific idea? You may want to check out our vibrant collection of [official and community-created starters](https://www.gatsbyjs.org/docs/gatsby-starters/)._ - -## 🚀 Quick start - -1. **Create a Gatsby site.** - - Use the Gatsby CLI to create a new site, specifying the blog starter. - - ```sh - # create a new Gatsby site using the blog starter - gatsby new my-blog-starter https://github.com/gatsbyjs/gatsby-starter-blog - ``` - -1. **Start developing.** - - Navigate into your new site’s directory and start it up. - - ```sh - cd my-blog-starter/ - gatsby develop - ``` - -1. **Open the source code and start editing!** - - Your site is now running at `http://localhost:8000`! - - _Note: You'll also see a second link: _`http://localhost:8000/___graphql`_. This is a tool you can use to experiment with querying your data. Learn more about using this tool in the [Gatsby tutorial](https://www.gatsbyjs.org/tutorial/part-five/#introducing-graphiql)._ - - Open the `my-blog-starter` directory in your code editor of choice and edit `src/pages/index.js`. Save your changes and the browser will update in real time! - -## 🧐 What's inside? - -A quick look at the top-level files and directories you'll see in a Gatsby project. - - . - ├── node_modules - ├── src - ├── .gitignore - ├── .prettierrc - ├── gatsby-browser.js - ├── gatsby-config.js - ├── gatsby-node.js - ├── gatsby-ssr.js - ├── LICENSE - ├── package-lock.json - ├── package.json - └── README.md - -1. **`/node_modules`**: This directory contains all of the modules of code that your project depends on (npm packages) are automatically installed. - -2. **`/src`**: This directory will contain all of the code related to what you will see on the front-end of your site (what you see in the browser) such as your site header or a page template. `src` is a convention for “source code”. - -3. **`.gitignore`**: This file tells git which files it should not track / not maintain a version history for. - -4. **`.prettierrc`**: This is a configuration file for [Prettier](https://prettier.io/). Prettier is a tool to help keep the formatting of your code consistent. - -5. **`gatsby-browser.js`**: This file is where Gatsby expects to find any usage of the [Gatsby browser APIs](https://www.gatsbyjs.org/docs/browser-apis/) (if any). These allow customization/extension of default Gatsby settings affecting the browser. - -6. **`gatsby-config.js`**: This is the main configuration file for a Gatsby site. This is where you can specify information about your site (metadata) like the site title and description, which Gatsby plugins you’d like to include, etc. (Check out the [config docs](https://www.gatsbyjs.org/docs/gatsby-config/) for more detail). - -7. **`gatsby-node.js`**: This file is where Gatsby expects to find any usage of the [Gatsby Node APIs](https://www.gatsbyjs.org/docs/node-apis/) (if any). These allow customization/extension of default Gatsby settings affecting pieces of the site build process. - -8. **`gatsby-ssr.js`**: This file is where Gatsby expects to find any usage of the [Gatsby server-side rendering APIs](https://www.gatsbyjs.org/docs/ssr-apis/) (if any). These allow customization of default Gatsby settings affecting server-side rendering. - -9. **`LICENSE`**: Gatsby is licensed under the MIT license. - -10. **`package-lock.json`** (See `package.json` below, first). This is an automatically generated file based on the exact versions of your npm dependencies that were installed for your project. **(You won’t change this file directly).** - -11. **`package.json`**: A manifest file for Node.js projects, which includes things like metadata (the project’s name, author, etc). This manifest is how npm knows which packages to install for your project. - -12. **`README.md`**: A text file containing useful reference information about your project. - -## 🎓 Learning Gatsby - -Looking for more guidance? Full documentation for Gatsby lives [on the website](https://www.gatsbyjs.org/). 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require(\"./parse-path\");\n\nexports.parsePath = _parsePath.parsePath;\n\nvar isAbsolutePath = function isAbsolutePath(path) {\n return path === null || path === void 0 ? void 0 : path.startsWith(\"/\");\n};\n\nfunction withPrefix(path, prefix) {\n var _ref, _prefix;\n\n if (prefix === void 0) {\n prefix = getGlobalBasePrefix();\n }\n\n if (!isLocalLink(path)) {\n return path;\n }\n\n if (path.startsWith(\"./\") || path.startsWith(\"../\")) {\n return path;\n }\n\n var base = (_ref = (_prefix = prefix) !== null && _prefix !== void 0 ? _prefix : getGlobalPathPrefix()) !== null && _ref !== void 0 ? _ref : \"/\";\n return \"\" + ((base === null || base === void 0 ? void 0 : base.endsWith(\"/\")) ? base.slice(0, -1) : base) + (path.startsWith(\"/\") ? path : \"/\" + path);\n} // These global values are wrapped in typeof clauses to ensure the values exist.\n// This is especially problematic in unit testing of this component.\n\n\nvar getGlobalPathPrefix = function getGlobalPathPrefix() {\n return process.env.NODE_ENV !== \"production\" ? typeof __PATH_PREFIX__ !== \"undefined\" ? __PATH_PREFIX__ : undefined : __PATH_PREFIX__;\n};\n\nvar getGlobalBasePrefix = function getGlobalBasePrefix() {\n return process.env.NODE_ENV !== \"production\" ? typeof __BASE_PATH__ !== \"undefined\" ? __BASE_PATH__ : undefined : __BASE_PATH__;\n};\n\nvar isLocalLink = function isLocalLink(path) {\n return path && !path.startsWith(\"http://\") && !path.startsWith(\"https://\") && !path.startsWith(\"//\");\n};\n\nfunction withAssetPrefix(path) {\n return withPrefix(path, getGlobalPathPrefix());\n}\n\nfunction absolutify(path, current) {\n // If it's already absolute, return as-is\n if (isAbsolutePath(path)) {\n return path;\n }\n\n return (0, _utils.resolve)(path, current);\n}\n\nvar rewriteLinkPath = function rewriteLinkPath(path, relativeTo) {\n if (typeof path === \"number\") {\n return path;\n }\n\n if (!isLocalLink(path)) {\n return path;\n }\n\n return isAbsolutePath(path) ? withPrefix(path) : absolutify(path, relativeTo);\n};\n\nvar NavLinkPropTypes = {\n activeClassName: _propTypes.default.string,\n activeStyle: _propTypes.default.object,\n partiallyActive: _propTypes.default.bool\n}; // Set up IntersectionObserver\n\nvar createIntersectionObserver = function createIntersectionObserver(el, cb) {\n var io = new window.IntersectionObserver(function (entries) {\n entries.forEach(function (entry) {\n if (el === entry.target) {\n // Check if element is within viewport, remove listener, destroy observer, and run link callback.\n // MSEdge doesn't currently support isIntersecting, so also test for an intersectionRatio > 0\n if (entry.isIntersecting || entry.intersectionRatio > 0) {\n io.unobserve(el);\n io.disconnect();\n cb();\n }\n }\n });\n }); // Add element to the observer\n\n io.observe(el);\n return {\n instance: io,\n el: el\n };\n};\n\nvar GatsbyLink = /*#__PURE__*/function (_React$Component) {\n (0, _inheritsLoose2.default)(GatsbyLink, _React$Component);\n\n function GatsbyLink(props) {\n var _this;\n\n _this = _React$Component.call(this, props) || this; // Default to no support for IntersectionObserver\n\n _this.defaultGetProps = function (_ref2) {\n var isPartiallyCurrent = _ref2.isPartiallyCurrent,\n isCurrent = _ref2.isCurrent;\n\n if (_this.props.partiallyActive ? isPartiallyCurrent : isCurrent) {\n return {\n className: [_this.props.className, _this.props.activeClassName].filter(Boolean).join(\" \"),\n style: (0, _extends2.default)({}, _this.props.style, _this.props.activeStyle)\n };\n }\n\n return null;\n };\n\n var IOSupported = false;\n\n if (typeof window !== \"undefined\" && window.IntersectionObserver) {\n IOSupported = true;\n }\n\n _this.state = {\n IOSupported: IOSupported\n };\n _this.handleRef = _this.handleRef.bind((0, _assertThisInitialized2.default)(_this));\n return _this;\n }\n\n var _proto = GatsbyLink.prototype;\n\n _proto.componentDidUpdate = function componentDidUpdate(prevProps, prevState) {\n // Preserve non IO functionality if no support\n if (this.props.to !== prevProps.to && !this.state.IOSupported) {\n ___loader.enqueue((0, _parsePath.parsePath)(rewriteLinkPath(this.props.to, window.location.pathname)).pathname);\n }\n };\n\n _proto.componentDidMount = function componentDidMount() {\n // Preserve non IO functionality if no support\n if (!this.state.IOSupported) {\n ___loader.enqueue((0, _parsePath.parsePath)(rewriteLinkPath(this.props.to, window.location.pathname)).pathname);\n }\n };\n\n _proto.componentWillUnmount = function componentWillUnmount() {\n if (!this.io) {\n return;\n }\n\n var _this$io = this.io,\n instance = _this$io.instance,\n el = _this$io.el;\n instance.unobserve(el);\n instance.disconnect();\n };\n\n _proto.handleRef = function handleRef(ref) {\n var _this2 = this;\n\n if (this.props.innerRef && this.props.innerRef.hasOwnProperty(\"current\")) {\n this.props.innerRef.current = ref;\n } else if (this.props.innerRef) {\n this.props.innerRef(ref);\n }\n\n if (this.state.IOSupported && ref) {\n // If IO supported and element reference found, setup Observer functionality\n this.io = createIntersectionObserver(ref, function () {\n ___loader.enqueue((0, _parsePath.parsePath)(rewriteLinkPath(_this2.props.to, window.location.pathname)).pathname);\n });\n }\n };\n\n _proto.render = function render() {\n var _this3 = this;\n\n var _this$props = this.props,\n to = _this$props.to,\n _this$props$getProps = _this$props.getProps,\n getProps = _this$props$getProps === void 0 ? this.defaultGetProps : _this$props$getProps,\n _onClick = _this$props.onClick,\n _onMouseEnter = _this$props.onMouseEnter,\n $activeClassName = _this$props.activeClassName,\n $activeStyle = _this$props.activeStyle,\n $innerRef = _this$props.innerRef,\n partiallyActive = _this$props.partiallyActive,\n state = _this$props.state,\n replace = _this$props.replace,\n rest = (0, _objectWithoutPropertiesLoose2.default)(_this$props, [\"to\", \"getProps\", \"onClick\", \"onMouseEnter\", \"activeClassName\", \"activeStyle\", \"innerRef\", \"partiallyActive\", \"state\", \"replace\"]);\n\n if (process.env.NODE_ENV !== \"production\" && !isLocalLink(to)) {\n console.warn(\"External link \" + to + \" was detected in a Link component. Use the Link component only for internal links. See: https://gatsby.dev/internal-links\");\n }\n\n return /*#__PURE__*/_react.default.createElement(_router.Location, null, function (_ref3) {\n var location = _ref3.location;\n var prefixedTo = rewriteLinkPath(to, location.pathname);\n return isLocalLink(prefixedTo) ? /*#__PURE__*/_react.default.createElement(_router.Link, (0, _extends2.default)({\n to: prefixedTo,\n state: state,\n getProps: getProps,\n innerRef: _this3.handleRef,\n onMouseEnter: function onMouseEnter(e) {\n if (_onMouseEnter) {\n _onMouseEnter(e);\n }\n\n ___loader.hovering((0, _parsePath.parsePath)(prefixedTo).pathname);\n },\n onClick: function onClick(e) {\n if (_onClick) {\n _onClick(e);\n }\n\n if (e.button === 0 && // ignore right clicks\n !_this3.props.target && // let browser handle \"target=_blank\"\n !e.defaultPrevented && // onClick prevented default\n !e.metaKey && // ignore clicks with modifier keys...\n !e.altKey && !e.ctrlKey && !e.shiftKey) {\n e.preventDefault();\n var shouldReplace = replace;\n var isCurrent = encodeURI(prefixedTo) === window.location.pathname;\n\n if (typeof replace !== \"boolean\" && isCurrent) {\n shouldReplace = true;\n } // Make sure the necessary scripts and data are\n // loaded before continuing.\n\n\n window.___navigate(prefixedTo, {\n state: state,\n replace: shouldReplace\n });\n }\n\n return true;\n }\n }, rest)) : /*#__PURE__*/_react.default.createElement(\"a\", (0, _extends2.default)({\n href: prefixedTo\n }, rest));\n });\n };\n\n return GatsbyLink;\n}(_react.default.Component);\n\nGatsbyLink.propTypes = (0, _extends2.default)({}, NavLinkPropTypes, {\n onClick: _propTypes.default.func,\n to: _propTypes.default.string.isRequired,\n replace: _propTypes.default.bool,\n state: _propTypes.default.object\n});\n\nvar showDeprecationWarning = function showDeprecationWarning(functionName, altFunctionName, version) {\n return console.warn(\"The \\\"\" + functionName + \"\\\" method is now deprecated and will be removed in Gatsby v\" + version + \". Please use \\\"\" + altFunctionName + \"\\\" instead.\");\n};\n\nvar _default = /*#__PURE__*/_react.default.forwardRef(function (props, ref) {\n return /*#__PURE__*/_react.default.createElement(GatsbyLink, (0, _extends2.default)({\n innerRef: ref\n }, props));\n});\n\nexports.default = _default;\n\nvar navigate = function navigate(to, options) {\n window.___navigate(rewriteLinkPath(to, window.location.pathname), options);\n};\n\nexports.navigate = navigate;\n\nvar push = function push(to) {\n showDeprecationWarning(\"push\", \"navigate\", 3);\n\n window.___push(rewriteLinkPath(to, window.location.pathname));\n};\n\nexports.push = push;\n\nvar replace = function replace(to) {\n showDeprecationWarning(\"replace\", \"navigate\", 3);\n\n window.___replace(rewriteLinkPath(to, window.location.pathname));\n}; // TODO: Remove navigateTo for Gatsby v3\n\n\nexports.replace = replace;\n\nvar navigateTo = function navigateTo(to) {\n showDeprecationWarning(\"navigateTo\", \"navigate\", 3);\n return push(to);\n};\n\nexports.navigateTo = navigateTo;","\"use strict\";\n\nexports.__esModule = true;\nexports.SessionStorage = void 0;\nvar STATE_KEY_PREFIX = \"@@scroll|\";\nvar GATSBY_ROUTER_SCROLL_STATE = \"___GATSBY_REACT_ROUTER_SCROLL\";\n\nvar SessionStorage = /*#__PURE__*/function () {\n function SessionStorage() {}\n\n var _proto = SessionStorage.prototype;\n\n _proto.read = function read(location, key) {\n var stateKey = this.getStateKey(location, key);\n\n try {\n var value = window.sessionStorage.getItem(stateKey);\n return value ? JSON.parse(value) : 0;\n } catch (e) {\n if (process.env.NODE_ENV !== \"production\") {\n console.warn(\"[gatsby-react-router-scroll] Unable to access sessionStorage; sessionStorage is not available.\");\n }\n\n if (window && window[GATSBY_ROUTER_SCROLL_STATE] && window[GATSBY_ROUTER_SCROLL_STATE][stateKey]) {\n return window[GATSBY_ROUTER_SCROLL_STATE][stateKey];\n }\n\n return 0;\n }\n };\n\n _proto.save = function save(location, key, value) {\n var stateKey = this.getStateKey(location, key);\n var storedValue = JSON.stringify(value);\n\n try {\n window.sessionStorage.setItem(stateKey, storedValue);\n } catch (e) {\n if (window && window[GATSBY_ROUTER_SCROLL_STATE]) {\n window[GATSBY_ROUTER_SCROLL_STATE][stateKey] = JSON.parse(storedValue);\n } else {\n window[GATSBY_ROUTER_SCROLL_STATE] = {};\n window[GATSBY_ROUTER_SCROLL_STATE][stateKey] = JSON.parse(storedValue);\n }\n\n if (process.env.NODE_ENV !== \"production\") {\n console.warn(\"[gatsby-react-router-scroll] Unable to save state in sessionStorage; sessionStorage is not available.\");\n }\n }\n };\n\n _proto.getStateKey = function getStateKey(location, key) {\n var stateKeyBase = \"\" + STATE_KEY_PREFIX + location.pathname;\n return key === null || typeof key === \"undefined\" ? stateKeyBase : stateKeyBase + \"|\" + key;\n };\n\n return SessionStorage;\n}();\n\nexports.SessionStorage = SessionStorage;","var _typeof = require(\"../helpers/typeof\");\n\nfunction _getRequireWildcardCache() {\n if (typeof WeakMap !== \"function\") return null;\n var cache = new WeakMap();\n\n _getRequireWildcardCache = function _getRequireWildcardCache() {\n return cache;\n };\n\n return cache;\n}\n\nfunction _interopRequireWildcard(obj) {\n if (obj && obj.__esModule) {\n return obj;\n }\n\n if (obj === null || _typeof(obj) !== \"object\" && typeof obj !== \"function\") {\n return {\n \"default\": obj\n };\n }\n\n var cache = _getRequireWildcardCache();\n\n if (cache && cache.has(obj)) {\n return cache.get(obj);\n }\n\n var newObj = {};\n var hasPropertyDescriptor = Object.defineProperty && Object.getOwnPropertyDescriptor;\n\n for (var key in obj) {\n if (Object.prototype.hasOwnProperty.call(obj, key)) {\n var desc = hasPropertyDescriptor ? Object.getOwnPropertyDescriptor(obj, key) : null;\n\n if (desc && (desc.get || desc.set)) {\n Object.defineProperty(newObj, key, desc);\n } else {\n newObj[key] = obj[key];\n }\n }\n }\n\n newObj[\"default\"] = obj;\n\n if (cache) {\n cache.set(obj, newObj);\n }\n\n return newObj;\n}\n\nmodule.exports = _interopRequireWildcard;","export default path => {\n if (path === undefined) {\n return path\n }\n if (path === `/`) {\n return `/`\n }\n if (path.charAt(path.length - 1) === `/`) {\n return path.slice(0, -1)\n }\n return path\n}\n","import { pick } from \"@reach/router/lib/utils\"\nimport stripPrefix from \"./strip-prefix\"\nimport normalizePagePath from \"./normalize-page-path\"\n\nconst pathCache = new Map()\nlet matchPaths = []\n\nconst trimPathname = rawPathname => {\n const pathname = decodeURIComponent(rawPathname)\n // Remove the pathPrefix from the pathname.\n const trimmedPathname = stripPrefix(pathname, __BASE_PATH__)\n // Remove any hashfragment\n .split(`#`)[0]\n // Remove search query\n .split(`?`)[0]\n\n return trimmedPathname\n}\n\nfunction absolutify(path) {\n // If it's already absolute, return as-is\n if (\n path.startsWith(`/`) ||\n path.startsWith(`https://`) ||\n path.startsWith(`http://`)\n ) {\n return path\n }\n // Calculate path relative to current location, adding a trailing slash to\n // match behavior of @reach/router\n return new URL(\n path,\n window.location.href + (window.location.href.endsWith(`/`) ? `` : `/`)\n ).pathname\n}\n\n/**\n * Set list of matchPaths\n *\n * @param {Array<{path: string, matchPath: string}>} value collection of matchPaths\n */\nexport const setMatchPaths = value => {\n matchPaths = value\n}\n\n/**\n * Return a matchpath url\n * if `match-paths.json` contains `{ \"/foo*\": \"/page1\", ...}`, then\n * `/foo?bar=far` => `/page1`\n *\n * @param {string} rawPathname A raw pathname\n * @return {string|null}\n */\nexport const findMatchPath = rawPathname => {\n const trimmedPathname = cleanPath(rawPathname)\n\n const pickPaths = matchPaths.map(({ path, matchPath }) => {\n return {\n path: matchPath,\n originalPath: path,\n }\n })\n\n const path = pick(pickPaths, trimmedPathname)\n\n if (path) {\n return normalizePagePath(path.route.originalPath)\n }\n\n return null\n}\n\n/**\n * Return a matchpath params from reach/router rules\n * if `match-paths.json` contains `{ \":bar/*foo\" }`, and the path is /baz/zaz/zoo\n * then it returns\n * { bar: baz, foo: zaz/zoo }\n *\n * @param {string} rawPathname A raw pathname\n * @return {object}\n */\nexport const grabMatchParams = rawPathname => {\n const trimmedPathname = cleanPath(rawPathname)\n\n const pickPaths = matchPaths.map(({ path, matchPath }) => {\n return {\n path: matchPath,\n originalPath: path,\n }\n })\n\n const path = pick(pickPaths, trimmedPathname)\n\n if (path) {\n return path.params\n }\n\n return {}\n}\n\n// Given a raw URL path, returns the cleaned version of it (trim off\n// `#` and query params), or if it matches an entry in\n// `match-paths.json`, its matched path is returned\n//\n// E.g. `/foo?bar=far` => `/foo`\n//\n// Or if `match-paths.json` contains `{ \"/foo*\": \"/page1\", ...}`, then\n// `/foo?bar=far` => `/page1`\nexport const findPath = rawPathname => {\n const trimmedPathname = trimPathname(absolutify(rawPathname))\n if (pathCache.has(trimmedPathname)) {\n return pathCache.get(trimmedPathname)\n }\n\n let foundPath = findMatchPath(trimmedPathname)\n\n if (!foundPath) {\n foundPath = cleanPath(rawPathname)\n }\n\n pathCache.set(trimmedPathname, foundPath)\n\n return foundPath\n}\n\n/**\n * Clean a url and converts /index.html => /\n * E.g. `/foo?bar=far` => `/foo`\n *\n * @param {string} rawPathname A raw pathname\n * @return {string}\n */\nexport const cleanPath = rawPathname => {\n const trimmedPathname = trimPathname(absolutify(rawPathname))\n\n let foundPath = trimmedPathname\n if (foundPath === `/index.html`) {\n foundPath = `/`\n }\n\n foundPath = normalizePagePath(foundPath)\n\n return foundPath\n}\n","\"use strict\";\n\nexports.__esModule = true;\nexports.useScrollRestoration = useScrollRestoration;\n\nvar _scrollHandler = require(\"./scroll-handler\");\n\nvar _react = require(\"react\");\n\nvar _router = require(\"@reach/router\");\n\nfunction useScrollRestoration(identifier) {\n var location = (0, _router.useLocation)();\n var state = (0, _react.useContext)(_scrollHandler.ScrollContext);\n var ref = (0, _react.useRef)();\n (0, _react.useLayoutEffect)(function () {\n if (ref.current) {\n var position = state.read(location, identifier);\n ref.current.scrollTo(0, position || 0);\n }\n }, []);\n return {\n ref: ref,\n onScroll: function onScroll() {\n if (ref.current) {\n state.save(location, identifier, ref.current.scrollTop);\n }\n }\n };\n}","// \n// An event handler can take an optional event argument\n// and should not return a value\n \n \n\n// An array of all currently registered event handlers for a type\n \n \n// A map of event types and their corresponding event handlers.\n \n \n \n \n\n/** Mitt: Tiny (~200b) functional event emitter / pubsub.\n * @name mitt\n * @returns {Mitt}\n */\nfunction mitt(all ) {\n\tall = all || Object.create(null);\n\n\treturn {\n\t\t/**\n\t\t * Register an event handler for the given type.\n\t\t *\n\t\t * @param {String} type\tType of event to listen for, or `\"*\"` for all events\n\t\t * @param {Function} handler Function to call in response to given event\n\t\t * @memberOf mitt\n\t\t */\n\t\ton: function on(type , handler ) {\n\t\t\t(all[type] || (all[type] = [])).push(handler);\n\t\t},\n\n\t\t/**\n\t\t * Remove an event handler for the given type.\n\t\t *\n\t\t * @param {String} type\tType of event to unregister `handler` from, or `\"*\"`\n\t\t * @param {Function} handler Handler function to remove\n\t\t * @memberOf mitt\n\t\t */\n\t\toff: function off(type , handler ) {\n\t\t\tif (all[type]) {\n\t\t\t\tall[type].splice(all[type].indexOf(handler) >>> 0, 1);\n\t\t\t}\n\t\t},\n\n\t\t/**\n\t\t * Invoke all handlers for the given type.\n\t\t * If present, `\"*\"` handlers are invoked after type-matched handlers.\n\t\t *\n\t\t * @param {String} type The event type to invoke\n\t\t * @param {Any} [evt] Any value (object is recommended and powerful), passed to each handler\n\t\t * @memberOf mitt\n\t\t */\n\t\temit: function emit(type , evt ) {\n\t\t\t(all[type] || []).slice().map(function (handler) { handler(evt); });\n\t\t\t(all['*'] || []).slice().map(function (handler) { handler(type, evt); });\n\t\t}\n\t};\n}\n\nexport default mitt;\n//# sourceMappingURL=mitt.es.js.map\n","import mitt from \"mitt\"\n\nconst emitter = mitt()\nexport default emitter\n","module.exports = Object.assign\n","\"use strict\";\n\nexports.__esModule = true;\nexports.useScrollRestoration = exports.ScrollContainer = exports.ScrollContext = void 0;\n\nvar _scrollHandler = require(\"./scroll-handler\");\n\nexports.ScrollContext = _scrollHandler.ScrollHandler;\n\nvar _scrollContainer = require(\"./scroll-container\");\n\nexports.ScrollContainer = _scrollContainer.ScrollContainer;\n\nvar _useScrollRestoration = require(\"./use-scroll-restoration\");\n\nexports.useScrollRestoration = _useScrollRestoration.useScrollRestoration;","function _objectWithoutPropertiesLoose(source, excluded) {\n if (source == null) return {};\n var target = {};\n var sourceKeys = Object.keys(source);\n var key, i;\n\n for (i = 0; i < sourceKeys.length; i++) {\n key = sourceKeys[i];\n if (excluded.indexOf(key) >= 0) continue;\n target[key] = source[key];\n }\n\n return target;\n}\n\nmodule.exports = _objectWithoutPropertiesLoose;","exports.polyfill = Component => Component\n","var _extends = Object.assign || function (target) { for (var i = 1; i < arguments.length; i++) { var source = arguments[i]; for (var key in source) { if (Object.prototype.hasOwnProperty.call(source, key)) { target[key] = source[key]; } } } return target; };\n\nvar getLocation = function getLocation(source) {\n var _source$location = source.location,\n search = _source$location.search,\n hash = _source$location.hash,\n href = _source$location.href,\n origin = _source$location.origin,\n protocol = _source$location.protocol,\n host = _source$location.host,\n hostname = _source$location.hostname,\n port = _source$location.port;\n var pathname = source.location.pathname;\n\n\n if (!pathname && href && canUseDOM) {\n var url = new URL(href);\n pathname = url.pathname;\n }\n\n return {\n pathname: encodeURI(decodeURI(pathname)),\n search: search,\n hash: hash,\n href: href,\n origin: origin,\n protocol: protocol,\n host: host,\n hostname: hostname,\n port: port,\n state: source.history.state,\n key: source.history.state && source.history.state.key || \"initial\"\n };\n};\n\nvar createHistory = function createHistory(source, options) {\n var listeners = [];\n var location = getLocation(source);\n var transitioning = false;\n var resolveTransition = function resolveTransition() {};\n\n return {\n get location() {\n return location;\n },\n\n get transitioning() {\n return transitioning;\n },\n\n _onTransitionComplete: function _onTransitionComplete() {\n transitioning = false;\n resolveTransition();\n },\n listen: function listen(listener) {\n listeners.push(listener);\n\n var popstateListener = function popstateListener() {\n location = getLocation(source);\n listener({ location: location, action: \"POP\" });\n };\n\n source.addEventListener(\"popstate\", popstateListener);\n\n return function () {\n source.removeEventListener(\"popstate\", popstateListener);\n listeners = listeners.filter(function (fn) {\n return fn !== listener;\n });\n };\n },\n navigate: function navigate(to) {\n var _ref = arguments.length > 1 && arguments[1] !== undefined ? arguments[1] : {},\n state = _ref.state,\n _ref$replace = _ref.replace,\n replace = _ref$replace === undefined ? false : _ref$replace;\n\n if (typeof to === \"number\") {\n source.history.go(to);\n } else {\n state = _extends({}, state, { key: Date.now() + \"\" });\n // try...catch iOS Safari limits to 100 pushState calls\n try {\n if (transitioning || replace) {\n source.history.replaceState(state, null, to);\n } else {\n source.history.pushState(state, null, to);\n }\n } catch (e) {\n source.location[replace ? \"replace\" : \"assign\"](to);\n }\n }\n\n location = getLocation(source);\n transitioning = true;\n var transition = new Promise(function (res) {\n return resolveTransition = res;\n });\n listeners.forEach(function (listener) {\n return listener({ location: location, action: \"PUSH\" });\n });\n return transition;\n }\n };\n};\n\n////////////////////////////////////////////////////////////////////////////////\n// Stores history entries in memory for testing or other platforms like Native\nvar createMemorySource = function createMemorySource() {\n var initialPath = arguments.length > 0 && arguments[0] !== undefined ? arguments[0] : \"/\";\n\n var searchIndex = initialPath.indexOf(\"?\");\n var initialLocation = {\n pathname: searchIndex > -1 ? initialPath.substr(0, searchIndex) : initialPath,\n search: searchIndex > -1 ? initialPath.substr(searchIndex) : \"\"\n };\n var index = 0;\n var stack = [initialLocation];\n var states = [null];\n\n return {\n get location() {\n return stack[index];\n },\n addEventListener: function addEventListener(name, fn) {},\n removeEventListener: function removeEventListener(name, fn) {},\n\n history: {\n get entries() {\n return stack;\n },\n get index() {\n return index;\n },\n get state() {\n return states[index];\n },\n pushState: function pushState(state, _, uri) {\n var _uri$split = uri.split(\"?\"),\n pathname = _uri$split[0],\n _uri$split$ = _uri$split[1],\n search = _uri$split$ === undefined ? \"\" : _uri$split$;\n\n index++;\n stack.push({ pathname: pathname, search: search.length ? \"?\" + search : search });\n states.push(state);\n },\n replaceState: function replaceState(state, _, uri) {\n var _uri$split2 = uri.split(\"?\"),\n pathname = _uri$split2[0],\n _uri$split2$ = _uri$split2[1],\n search = _uri$split2$ === undefined ? \"\" : _uri$split2$;\n\n stack[index] = { pathname: pathname, search: search };\n states[index] = state;\n },\n go: function go(to) {\n var newIndex = index + to;\n\n if (newIndex < 0 || newIndex > states.length - 1) {\n return;\n }\n\n index = newIndex;\n }\n }\n };\n};\n\n////////////////////////////////////////////////////////////////////////////////\n// global history - uses window.history as the source if available, otherwise a\n// memory history\nvar canUseDOM = !!(typeof window !== \"undefined\" && window.document && window.document.createElement);\nvar getSource = function getSource() {\n return canUseDOM ? window : createMemorySource();\n};\n\nvar globalHistory = createHistory(getSource());\nvar navigate = globalHistory.navigate;\n\n////////////////////////////////////////////////////////////////////////////////\n\nexport { globalHistory, navigate, createHistory, createMemorySource };","\"use strict\";\n\nexports.__esModule = true;\nexports.default = void 0;\n\n/**\n * Get a manifest filename depending on localized pathname\n *\n * @param {string} pathname\n * @param {Array<{start_url: string, lang: string}>} localizedManifests\n * @return string\n */\nvar _default = function _default(pathname, localizedManifests) {\n var defaultFilename = \"manifest.webmanifest\";\n\n if (!Array.isArray(localizedManifests)) {\n return defaultFilename;\n }\n\n var localizedManifest = localizedManifests.find(function (app) {\n return pathname.startsWith(app.start_url);\n });\n\n if (!localizedManifest) {\n return defaultFilename;\n }\n\n return \"manifest_\" + localizedManifest.lang + \".webmanifest\";\n};\n\nexports.default = _default;","\"use strict\";\n\nvar _interopRequireDefault = require(\"@babel/runtime/helpers/interopRequireDefault\");\n\nvar _gatsby = require(\"gatsby\");\n\nvar _catchLinks = _interopRequireDefault(require(\"./catch-links\"));\n\nexports.onClientEntry = function (_, pluginOptions) {\n if (pluginOptions === void 0) {\n pluginOptions = {};\n }\n\n (0, _catchLinks.default)(window, pluginOptions, function (href) {\n (0, _gatsby.navigate)(href);\n });\n};","\"use strict\";\n\nvar _interopRequireWildcard = require(\"@babel/runtime/helpers/interopRequireWildcard\");\n\nvar _interopRequireDefault = require(\"@babel/runtime/helpers/interopRequireDefault\");\n\nexports.__esModule = true;\nexports.ScrollHandler = exports.ScrollContext = void 0;\n\nvar _assertThisInitialized2 = _interopRequireDefault(require(\"@babel/runtime/helpers/assertThisInitialized\"));\n\nvar _inheritsLoose2 = _interopRequireDefault(require(\"@babel/runtime/helpers/inheritsLoose\"));\n\nvar React = _interopRequireWildcard(require(\"react\"));\n\nvar _propTypes = _interopRequireDefault(require(\"prop-types\"));\n\nvar _sessionStorage = require(\"./session-storage\");\n\nvar ScrollContext = React.createContext(new _sessionStorage.SessionStorage());\nexports.ScrollContext = ScrollContext;\nScrollContext.displayName = \"GatsbyScrollContext\";\n\nvar ScrollHandler = /*#__PURE__*/function (_React$Component) {\n (0, _inheritsLoose2.default)(ScrollHandler, _React$Component);\n\n function ScrollHandler() {\n var _this;\n\n for (var _len = arguments.length, args = new Array(_len), _key = 0; _key < _len; _key++) {\n args[_key] = arguments[_key];\n }\n\n _this = _React$Component.call.apply(_React$Component, [this].concat(args)) || this;\n _this._stateStorage = new _sessionStorage.SessionStorage();\n\n _this.scrollListener = function () {\n var key = _this.props.location.key;\n\n if (key) {\n _this._stateStorage.save(_this.props.location, key, window.scrollY);\n }\n };\n\n _this.windowScroll = function (position, prevProps) {\n if (_this.shouldUpdateScroll(prevProps, _this.props)) {\n window.scrollTo(0, position);\n }\n };\n\n _this.scrollToHash = function (hash, prevProps) {\n var node = document.getElementById(hash.substring(1));\n\n if (node && _this.shouldUpdateScroll(prevProps, _this.props)) {\n node.scrollIntoView();\n }\n };\n\n _this.shouldUpdateScroll = function (prevRouterProps, routerProps) {\n var shouldUpdateScroll = _this.props.shouldUpdateScroll;\n\n if (!shouldUpdateScroll) {\n return true;\n } // Hack to allow accessing this._stateStorage.\n\n\n return shouldUpdateScroll.call((0, _assertThisInitialized2.default)(_this), prevRouterProps, routerProps);\n };\n\n return _this;\n }\n\n var _proto = ScrollHandler.prototype;\n\n _proto.componentDidMount = function componentDidMount() {\n window.addEventListener(\"scroll\", this.scrollListener);\n var scrollPosition;\n var _this$props$location = this.props.location,\n key = _this$props$location.key,\n hash = _this$props$location.hash;\n\n if (key) {\n scrollPosition = this._stateStorage.read(this.props.location, key);\n }\n\n if (scrollPosition) {\n this.windowScroll(scrollPosition, undefined);\n } else if (hash) {\n this.scrollToHash(decodeURI(hash), undefined);\n }\n };\n\n _proto.componentWillUnmount = function componentWillUnmount() {\n window.removeEventListener(\"scroll\", this.scrollListener);\n };\n\n _proto.componentDidUpdate = function componentDidUpdate(prevProps) {\n var _this$props$location2 = this.props.location,\n hash = _this$props$location2.hash,\n key = _this$props$location2.key;\n var scrollPosition;\n\n if (key) {\n scrollPosition = this._stateStorage.read(this.props.location, key);\n }\n\n if (hash && scrollPosition === 0) {\n this.scrollToHash(decodeURI(hash), prevProps);\n } else {\n this.windowScroll(scrollPosition, prevProps);\n }\n };\n\n _proto.render = function render() {\n return /*#__PURE__*/React.createElement(ScrollContext.Provider, {\n value: this._stateStorage\n }, this.props.children);\n };\n\n return ScrollHandler;\n}(React.Component);\n\nexports.ScrollHandler = ScrollHandler;\nScrollHandler.propTypes = {\n shouldUpdateScroll: _propTypes.default.func,\n children: _propTypes.default.element.isRequired,\n location: _propTypes.default.object.isRequired\n};","// custom typefaces\nimport 'typeface-montserrat'\nimport 'typeface-merriweather'\n","import React, { createElement } from \"react\"\nimport PropTypes from \"prop-types\"\nimport { publicLoader } from \"./loader\"\nimport { apiRunner } from \"./api-runner-browser\"\nimport { grabMatchParams } from \"./find-path\"\n\n// Renders page\nclass PageRenderer extends React.Component {\n render() {\n const props = {\n ...this.props,\n params: {\n ...grabMatchParams(this.props.location.pathname),\n ...this.props.pageResources.json.pageContext.__params,\n },\n pathContext: this.props.pageContext,\n }\n\n const [replacementElement] = apiRunner(`replaceComponentRenderer`, {\n props: this.props,\n loader: publicLoader,\n })\n\n const pageElement =\n replacementElement ||\n createElement(this.props.pageResources.component, {\n ...props,\n key: this.props.path || this.props.pageResources.page.path,\n })\n\n const wrappedPage = apiRunner(\n `wrapPageElement`,\n { element: pageElement, props },\n pageElement,\n ({ result }) => {\n return { element: result, props }\n }\n ).pop()\n\n return wrappedPage\n }\n}\n\nPageRenderer.propTypes = {\n location: PropTypes.object.isRequired,\n pageResources: PropTypes.object.isRequired,\n data: PropTypes.object,\n pageContext: PropTypes.object.isRequired,\n}\n\nexport default PageRenderer\n","export default function _arrayLikeToArray(arr, len) {\n if (len == null || len > arr.length) len = arr.length;\n\n for (var i = 0, arr2 = new Array(len); i < len; i++) {\n arr2[i] = arr[i];\n }\n\n return arr2;\n}","import arrayWithoutHoles from \"./arrayWithoutHoles\";\nimport iterableToArray from \"./iterableToArray\";\nimport unsupportedIterableToArray from \"./unsupportedIterableToArray\";\nimport nonIterableSpread from \"./nonIterableSpread\";\nexport default function _toConsumableArray(arr) {\n return arrayWithoutHoles(arr) || iterableToArray(arr) || unsupportedIterableToArray(arr) || nonIterableSpread();\n}","import arrayLikeToArray from \"./arrayLikeToArray\";\nexport default function _arrayWithoutHoles(arr) {\n if (Array.isArray(arr)) return arrayLikeToArray(arr);\n}","export default function _iterableToArray(iter) {\n if (typeof Symbol !== \"undefined\" && Symbol.iterator in Object(iter)) return Array.from(iter);\n}","import arrayLikeToArray from \"./arrayLikeToArray\";\nexport default function _unsupportedIterableToArray(o, minLen) {\n if (!o) return;\n if (typeof o === \"string\") return arrayLikeToArray(o, minLen);\n var n = Object.prototype.toString.call(o).slice(8, -1);\n if (n === \"Object\" && o.constructor) n = o.constructor.name;\n if (n === \"Map\" || n === \"Set\") return Array.from(o);\n if (n === \"Arguments\" || /^(?:Ui|I)nt(?:8|16|32)(?:Clamped)?Array$/.test(n)) return arrayLikeToArray(o, minLen);\n}","export default function _nonIterableSpread() {\n throw new TypeError(\"Invalid attempt to spread non-iterable instance.\\nIn order to be iterable, non-array objects must have a [Symbol.iterator]() method.\");\n}","import invariant from \"invariant\";\n\n////////////////////////////////////////////////////////////////////////////////\n// startsWith(string, search) - Check if `string` starts with `search`\nvar startsWith = function startsWith(string, search) {\n return string.substr(0, search.length) === search;\n};\n\n////////////////////////////////////////////////////////////////////////////////\n// pick(routes, uri)\n//\n// Ranks and picks the best route to match. Each segment gets the highest\n// amount of points, then the type of segment gets an additional amount of\n// points where\n//\n// static > dynamic > splat > root\n//\n// This way we don't have to worry about the order of our routes, let the\n// computers do it.\n//\n// A route looks like this\n//\n// { path, default, value }\n//\n// And a returned match looks like:\n//\n// { route, params, uri }\n//\n// I know, I should use TypeScript not comments for these types.\nvar pick = function pick(routes, uri) {\n var match = void 0;\n var default_ = void 0;\n\n var _uri$split = uri.split(\"?\"),\n uriPathname = _uri$split[0];\n\n var uriSegments = segmentize(uriPathname);\n var isRootUri = uriSegments[0] === \"\";\n var ranked = rankRoutes(routes);\n\n for (var i = 0, l = ranked.length; i < l; i++) {\n var missed = false;\n var route = ranked[i].route;\n\n if (route.default) {\n default_ = {\n route: route,\n params: {},\n uri: uri\n };\n continue;\n }\n\n var routeSegments = segmentize(route.path);\n var params = {};\n var max = Math.max(uriSegments.length, routeSegments.length);\n var index = 0;\n\n for (; index < max; index++) {\n var routeSegment = routeSegments[index];\n var uriSegment = uriSegments[index];\n\n if (isSplat(routeSegment)) {\n // Hit a splat, just grab the rest, and return a match\n // uri: /files/documents/work\n // route: /files/*\n var param = routeSegment.slice(1) || \"*\";\n params[param] = uriSegments.slice(index).map(decodeURIComponent).join(\"/\");\n break;\n }\n\n if (uriSegment === undefined) {\n // URI is shorter than the route, no match\n // uri: /users\n // route: /users/:userId\n missed = true;\n break;\n }\n\n var dynamicMatch = paramRe.exec(routeSegment);\n\n if (dynamicMatch && !isRootUri) {\n var matchIsNotReserved = reservedNames.indexOf(dynamicMatch[1]) === -1;\n !matchIsNotReserved ? process.env.NODE_ENV !== \"production\" ? invariant(false, \" dynamic segment \\\"\" + dynamicMatch[1] + \"\\\" is a reserved name. Please use a different name in path \\\"\" + route.path + \"\\\".\") : invariant(false) : void 0;\n var value = decodeURIComponent(uriSegment);\n params[dynamicMatch[1]] = value;\n } else if (routeSegment !== uriSegment) {\n // Current segments don't match, not dynamic, not splat, so no match\n // uri: /users/123/settings\n // route: /users/:id/profile\n missed = true;\n break;\n }\n }\n\n if (!missed) {\n match = {\n route: route,\n params: params,\n uri: \"/\" + uriSegments.slice(0, index).join(\"/\")\n };\n break;\n }\n }\n\n return match || default_ || null;\n};\n\n////////////////////////////////////////////////////////////////////////////////\n// match(path, uri) - Matches just one path to a uri, also lol\nvar match = function match(path, uri) {\n return pick([{ path: path }], uri);\n};\n\n////////////////////////////////////////////////////////////////////////////////\n// resolve(to, basepath)\n//\n// Resolves URIs as though every path is a directory, no files. Relative URIs\n// in the browser can feel awkward because not only can you be \"in a directory\"\n// you can be \"at a file\", too. For example\n//\n// browserSpecResolve('foo', '/bar/') => /bar/foo\n// browserSpecResolve('foo', '/bar') => /foo\n//\n// But on the command line of a file system, it's not as complicated, you can't\n// `cd` from a file, only directories. This way, links have to know less about\n// their current path. To go deeper you can do this:\n//\n// \n// // instead of\n// \n//\n// Just like `cd`, if you want to go deeper from the command line, you do this:\n//\n// cd deeper\n// # not\n// cd $(pwd)/deeper\n//\n// By treating every path as a directory, linking to relative paths should\n// require less contextual information and (fingers crossed) be more intuitive.\nvar resolve = function resolve(to, base) {\n // /foo/bar, /baz/qux => /foo/bar\n if (startsWith(to, \"/\")) {\n return to;\n }\n\n var _to$split = to.split(\"?\"),\n toPathname = _to$split[0],\n toQuery = _to$split[1];\n\n var _base$split = base.split(\"?\"),\n basePathname = _base$split[0];\n\n var toSegments = segmentize(toPathname);\n var baseSegments = segmentize(basePathname);\n\n // ?a=b, /users?b=c => /users?a=b\n if (toSegments[0] === \"\") {\n return addQuery(basePathname, toQuery);\n }\n\n // profile, /users/789 => /users/789/profile\n if (!startsWith(toSegments[0], \".\")) {\n var pathname = baseSegments.concat(toSegments).join(\"/\");\n return addQuery((basePathname === \"/\" ? \"\" : \"/\") + pathname, toQuery);\n }\n\n // ./ /users/123 => /users/123\n // ../ /users/123 => /users\n // ../.. /users/123 => /\n // ../../one /a/b/c/d => /a/b/one\n // .././one /a/b/c/d => /a/b/c/one\n var allSegments = baseSegments.concat(toSegments);\n var segments = [];\n for (var i = 0, l = allSegments.length; i < l; i++) {\n var segment = allSegments[i];\n if (segment === \"..\") segments.pop();else if (segment !== \".\") segments.push(segment);\n }\n\n return addQuery(\"/\" + segments.join(\"/\"), toQuery);\n};\n\n////////////////////////////////////////////////////////////////////////////////\n// insertParams(path, params)\n\nvar insertParams = function insertParams(path, params) {\n var _path$split = path.split(\"?\"),\n pathBase = _path$split[0],\n _path$split$ = _path$split[1],\n query = _path$split$ === undefined ? \"\" : _path$split$;\n\n var segments = segmentize(pathBase);\n var constructedPath = \"/\" + segments.map(function (segment) {\n var match = paramRe.exec(segment);\n return match ? params[match[1]] : segment;\n }).join(\"/\");\n var _params$location = params.location;\n _params$location = _params$location === undefined ? {} : _params$location;\n var _params$location$sear = _params$location.search,\n search = _params$location$sear === undefined ? \"\" : _params$location$sear;\n\n var searchSplit = search.split(\"?\")[1] || \"\";\n constructedPath = addQuery(constructedPath, query, searchSplit);\n return constructedPath;\n};\n\nvar validateRedirect = function validateRedirect(from, to) {\n var filter = function filter(segment) {\n return isDynamic(segment);\n };\n var fromString = segmentize(from).filter(filter).sort().join(\"/\");\n var toString = segmentize(to).filter(filter).sort().join(\"/\");\n return fromString === toString;\n};\n\n////////////////////////////////////////////////////////////////////////////////\n// Junk\nvar paramRe = /^:(.+)/;\n\nvar SEGMENT_POINTS = 4;\nvar STATIC_POINTS = 3;\nvar DYNAMIC_POINTS = 2;\nvar SPLAT_PENALTY = 1;\nvar ROOT_POINTS = 1;\n\nvar isRootSegment = function isRootSegment(segment) {\n return segment === \"\";\n};\nvar isDynamic = function isDynamic(segment) {\n return paramRe.test(segment);\n};\nvar isSplat = function isSplat(segment) {\n return segment && segment[0] === \"*\";\n};\n\nvar rankRoute = function rankRoute(route, index) {\n var score = route.default ? 0 : segmentize(route.path).reduce(function (score, segment) {\n score += SEGMENT_POINTS;\n if (isRootSegment(segment)) score += ROOT_POINTS;else if (isDynamic(segment)) score += DYNAMIC_POINTS;else if (isSplat(segment)) score -= SEGMENT_POINTS + SPLAT_PENALTY;else score += STATIC_POINTS;\n return score;\n }, 0);\n return { route: route, score: score, index: index };\n};\n\nvar rankRoutes = function rankRoutes(routes) {\n return routes.map(rankRoute).sort(function (a, b) {\n return a.score < b.score ? 1 : a.score > b.score ? -1 : a.index - b.index;\n });\n};\n\nvar segmentize = function segmentize(uri) {\n return uri\n // strip starting/ending slashes\n .replace(/(^\\/+|\\/+$)/g, \"\").split(\"/\");\n};\n\nvar addQuery = function addQuery(pathname) {\n for (var _len = arguments.length, query = Array(_len > 1 ? _len - 1 : 0), _key = 1; _key < _len; _key++) {\n query[_key - 1] = arguments[_key];\n }\n\n query = query.filter(function (q) {\n return q && q.length > 0;\n });\n return pathname + (query && query.length > 0 ? \"?\" + query.join(\"&\") : \"\");\n};\n\nvar reservedNames = [\"uri\", \"path\"];\n\n/**\n * Shallow compares two objects.\n * @param {Object} obj1 The first object to compare.\n * @param {Object} obj2 The second object to compare.\n */\nvar shallowCompare = function shallowCompare(obj1, obj2) {\n var obj1Keys = Object.keys(obj1);\n return obj1Keys.length === Object.keys(obj2).length && obj1Keys.every(function (key) {\n return obj2.hasOwnProperty(key) && obj1[key] === obj2[key];\n });\n};\n\n////////////////////////////////////////////////////////////////////////////////\nexport { startsWith, pick, match, resolve, insertParams, validateRedirect, shallowCompare };","module.exports = [{\n plugin: require('../node_modules/gatsby-plugin-google-analytics/gatsby-browser.js'),\n options: {\"plugins\":[]},\n },{\n plugin: require('../node_modules/gatsby-plugin-manifest/gatsby-browser.js'),\n options: {\"plugins\":[],\"name\":\"Cube Blog\",\"short_name\":\"Cube\",\"start_url\":\"/\",\"background_color\":\"#ffffff\",\"theme_color\":\"#663399\",\"display\":\"minimal-ui\",\"icon\":\"content/assets/icon.png\",\"cache_busting_mode\":\"query\",\"include_favicon\":true,\"legacy\":true,\"theme_color_in_head\":true,\"cacheDigest\":\"8c19a894ebc3f54d282a8f2418cf5398\"},\n },{\n plugin: require('../node_modules/gatsby-plugin-offline/gatsby-browser.js'),\n options: {\"plugins\":[]},\n },{\n plugin: require('../node_modules/gatsby-plugin-typography/gatsby-browser.js'),\n options: {\"plugins\":[],\"pathToConfigModule\":\"src/utils/typography\"},\n },{\n plugin: require('../node_modules/gatsby-plugin-catch-links/gatsby-browser.js'),\n options: {\"plugins\":[]},\n },{\n plugin: require('../gatsby-browser.js'),\n options: {\"plugins\":[]},\n }]\n","/*!\n * domready (c) Dustin Diaz 2014 - License MIT\n * ie10 fix - Mikael Kristiansson 2019\n */\n!(function(name, definition) {\n if (typeof module != \"undefined\") module.exports = definition();\n else if (typeof define == \"function\" && typeof define.amd == \"object\")\n define(definition);\n else this[name] = definition();\n})(\"domready\", function() {\n var ie10 = false;\n if (navigator.appVersion.indexOf(\"MSIE 10\") !== -1) {\n ie10 = true;\n }\n\n var fns = [],\n listener,\n doc = typeof document === \"object\" && document,\n hack = ie10\n ? doc.documentElement.doScroll(\"left\")\n : doc.documentElement.doScroll,\n domContentLoaded = \"DOMContentLoaded\",\n loaded =\n doc && (hack ? /^loaded|^c/ : /^loaded|^i|^c/).test(doc.readyState);\n\n if (!loaded && doc)\n doc.addEventListener(\n domContentLoaded,\n (listener = function() {\n doc.removeEventListener(domContentLoaded, listener);\n loaded = 1;\n while ((listener = fns.shift())) listener();\n })\n );\n\n return function(fn) {\n loaded ? setTimeout(fn, 0) : fns.push(fn);\n };\n});\n","import { apiRunner } from \"./api-runner-browser\"\n\nif (\n window.location.protocol !== `https:` &&\n window.location.hostname !== `localhost`\n) {\n console.error(\n `Service workers can only be used over HTTPS, or on localhost for development`\n )\n} else if (`serviceWorker` in navigator) {\n navigator.serviceWorker\n .register(`${__BASE_PATH__}/sw.js`)\n .then(function (reg) {\n reg.addEventListener(`updatefound`, () => {\n apiRunner(`onServiceWorkerUpdateFound`, { serviceWorker: reg })\n // The updatefound event implies that reg.installing is set; see\n // https://w3c.github.io/ServiceWorker/#service-worker-registration-updatefound-event\n const installingWorker = reg.installing\n console.log(`installingWorker`, installingWorker)\n installingWorker.addEventListener(`statechange`, () => {\n switch (installingWorker.state) {\n case `installed`:\n if (navigator.serviceWorker.controller) {\n // At this point, the old content will have been purged and the fresh content will\n // have been added to the cache.\n\n // We set a flag so Gatsby Link knows to refresh the page on next navigation attempt\n window.___swUpdated = true\n // We call the onServiceWorkerUpdateReady API so users can show update prompts.\n apiRunner(`onServiceWorkerUpdateReady`, { serviceWorker: reg })\n\n // If resources failed for the current page, reload.\n if (window.___failedResources) {\n console.log(`resources failed, SW updated - reloading`)\n window.location.reload()\n }\n } else {\n // At this point, everything has been precached.\n // It's the perfect time to display a \"Content is cached for offline use.\" message.\n console.log(`Content is now available offline!`)\n\n // Post to service worker that install is complete.\n // Delay to allow time for the event listener to be added --\n // otherwise fetch is called too soon and resources aren't cached.\n apiRunner(`onServiceWorkerInstalled`, { serviceWorker: reg })\n }\n break\n\n case `redundant`:\n console.error(`The installing service worker became redundant.`)\n apiRunner(`onServiceWorkerRedundant`, { serviceWorker: reg })\n break\n\n case `activated`:\n apiRunner(`onServiceWorkerActive`, { serviceWorker: reg })\n break\n }\n })\n })\n })\n .catch(function (e) {\n console.error(`Error during service worker registration:`, e)\n })\n}\n","// prefer default export if available\nconst preferDefault = m => (m && m.default) || m\n\nexports.components = {\n \"component---node-modules-gatsby-plugin-offline-app-shell-js\": () => import(\"./../../../node_modules/gatsby-plugin-offline/app-shell.js\" /* webpackChunkName: \"component---node-modules-gatsby-plugin-offline-app-shell-js\" */),\n \"component---src-pages-404-js\": () => import(\"./../../../src/pages/404.js\" /* webpackChunkName: \"component---src-pages-404-js\" */),\n \"component---src-pages-index-js\": () => import(\"./../../../src/pages/index.js\" /* webpackChunkName: \"component---src-pages-index-js\" */),\n \"component---src-templates-blog-post-js\": () => import(\"./../../../src/templates/blog-post.js\" /* webpackChunkName: \"component---src-templates-blog-post-js\" */)\n}\n\n","function _assertThisInitialized(self) {\n if (self === void 0) {\n throw new ReferenceError(\"this hasn't been initialised - super() hasn't been called\");\n }\n\n return self;\n}\n\nmodule.exports = _assertThisInitialized;","/**\n * Copyright (c) 2013-present, Facebook, Inc.\n *\n * This source code is licensed under the MIT license found in the\n * LICENSE file in the root directory of this source tree.\n */\n\n'use strict';\n\n/**\n * Use invariant() to assert state which your program assumes to be true.\n *\n * Provide sprintf-style format (only %s is supported) and arguments\n * to provide information about what broke and what you were\n * expecting.\n *\n * The invariant message will be stripped in production, but the invariant\n * will remain to ensure logic does not differ in production.\n */\n\nvar invariant = function(condition, format, a, b, c, d, e, f) {\n if (process.env.NODE_ENV !== 'production') {\n if (format === undefined) {\n throw new Error('invariant requires an error message argument');\n }\n }\n\n if (!condition) {\n var error;\n if (format === undefined) {\n error = new Error(\n 'Minified exception occurred; use the non-minified dev environment ' +\n 'for the full error message and additional helpful warnings.'\n );\n } else {\n var args = [a, b, c, d, e, f];\n var argIndex = 0;\n error = new Error(\n format.replace(/%s/g, function() { return args[argIndex++]; })\n );\n error.name = 'Invariant Violation';\n }\n\n error.framesToPop = 1; // we don't care about invariant's own frame\n throw error;\n }\n};\n\nmodule.exports = invariant;\n","function _interopRequireDefault(obj) {\n return obj && obj.__esModule ? obj : {\n \"default\": obj\n };\n}\n\nmodule.exports = _interopRequireDefault;","// This is extracted to separate module because it's shared\n// between browser and SSR code\nexport const RouteAnnouncerProps = {\n id: `gatsby-announcer`,\n style: {\n position: `absolute`,\n top: 0,\n width: 1,\n height: 1,\n padding: 0,\n overflow: `hidden`,\n clip: `rect(0, 0, 0, 0)`,\n whiteSpace: `nowrap`,\n border: 0,\n },\n \"aria-live\": `assertive`,\n \"aria-atomic\": `true`,\n}\n","import React from \"react\"\nimport PropTypes from \"prop-types\"\nimport loader, { PageResourceStatus } from \"./loader\"\nimport redirects from \"./redirects.json\"\nimport { apiRunner } from \"./api-runner-browser\"\nimport emitter from \"./emitter\"\nimport { RouteAnnouncerProps } from \"./route-announcer-props\"\nimport { navigate as reachNavigate } from \"@reach/router\"\nimport { globalHistory } from \"@reach/router/lib/history\"\nimport { parsePath } from \"gatsby-link\"\n\n// Convert to a map for faster lookup in maybeRedirect()\nconst redirectMap = redirects.reduce((map, redirect) => {\n map[redirect.fromPath] = redirect\n return map\n}, {})\n\nfunction maybeRedirect(pathname) {\n const redirect = redirectMap[pathname]\n\n if (redirect != null) {\n if (process.env.NODE_ENV !== `production`) {\n if (!loader.isPageNotFound(pathname)) {\n console.error(\n `The route \"${pathname}\" matches both a page and a redirect; this is probably not intentional.`\n )\n }\n }\n\n window.___replace(redirect.toPath)\n return true\n } else {\n return false\n }\n}\n\nconst onPreRouteUpdate = (location, prevLocation) => {\n if (!maybeRedirect(location.pathname)) {\n apiRunner(`onPreRouteUpdate`, { location, prevLocation })\n }\n}\n\nconst onRouteUpdate = (location, prevLocation) => {\n if (!maybeRedirect(location.pathname)) {\n apiRunner(`onRouteUpdate`, { location, prevLocation })\n }\n}\n\nconst navigate = (to, options = {}) => {\n // Support forward/backward navigation with numbers\n // navigate(-2) (jumps back 2 history steps)\n // navigate(2) (jumps forward 2 history steps)\n if (typeof to === `number`) {\n globalHistory.navigate(to)\n return\n }\n\n let { pathname } = parsePath(to)\n const redirect = redirectMap[pathname]\n\n // If we're redirecting, just replace the passed in pathname\n // to the one we want to redirect to.\n if (redirect) {\n to = redirect.toPath\n pathname = parsePath(to).pathname\n }\n\n // If we had a service worker update, no matter the path, reload window and\n // reset the pathname whitelist\n if (window.___swUpdated) {\n window.location = pathname\n return\n }\n\n // Start a timer to wait for a second before transitioning and showing a\n // loader in case resources aren't around yet.\n const timeoutId = setTimeout(() => {\n emitter.emit(`onDelayedLoadPageResources`, { pathname })\n apiRunner(`onRouteUpdateDelayed`, {\n location: window.location,\n })\n }, 1000)\n\n loader.loadPage(pathname).then(pageResources => {\n // If no page resources, then refresh the page\n // Do this, rather than simply `window.location.reload()`, so that\n // pressing the back/forward buttons work - otherwise when pressing\n // back, the browser will just change the URL and expect JS to handle\n // the change, which won't always work since it might not be a Gatsby\n // page.\n if (!pageResources || pageResources.status === PageResourceStatus.Error) {\n window.history.replaceState({}, ``, location.href)\n window.location = pathname\n clearTimeout(timeoutId)\n return\n }\n\n // If the loaded page has a different compilation hash to the\n // window, then a rebuild has occurred on the server. Reload.\n if (process.env.NODE_ENV === `production` && pageResources) {\n if (\n pageResources.page.webpackCompilationHash !==\n window.___webpackCompilationHash\n ) {\n // Purge plugin-offline cache\n if (\n `serviceWorker` in navigator &&\n navigator.serviceWorker.controller !== null &&\n navigator.serviceWorker.controller.state === `activated`\n ) {\n navigator.serviceWorker.controller.postMessage({\n gatsbyApi: `clearPathResources`,\n })\n }\n\n console.log(`Site has changed on server. Reloading browser`)\n window.location = pathname\n }\n }\n reachNavigate(to, options)\n clearTimeout(timeoutId)\n })\n}\n\nfunction shouldUpdateScroll(prevRouterProps, { location }) {\n const { pathname, hash } = location\n const results = apiRunner(`shouldUpdateScroll`, {\n prevRouterProps,\n // `pathname` for backwards compatibility\n pathname,\n routerProps: { location },\n getSavedScrollPosition: args => this._stateStorage.read(args),\n })\n if (results.length > 0) {\n // Use the latest registered shouldUpdateScroll result, this allows users to override plugin's configuration\n // @see https://github.com/gatsbyjs/gatsby/issues/12038\n return results[results.length - 1]\n }\n\n if (prevRouterProps) {\n const {\n location: { pathname: oldPathname },\n } = prevRouterProps\n if (oldPathname === pathname) {\n // Scroll to element if it exists, if it doesn't, or no hash is provided,\n // scroll to top.\n return hash ? decodeURI(hash.slice(1)) : [0, 0]\n }\n }\n return true\n}\n\nfunction init() {\n // The \"scroll-behavior\" package expects the \"action\" to be on the location\n // object so let's copy it over.\n globalHistory.listen(args => {\n args.location.action = args.action\n })\n\n window.___push = to => navigate(to, { replace: false })\n window.___replace = to => navigate(to, { replace: true })\n window.___navigate = (to, options) => navigate(to, options)\n\n // Check for initial page-load redirect\n maybeRedirect(window.location.pathname)\n}\n\nclass RouteAnnouncer extends React.Component {\n constructor(props) {\n super(props)\n this.announcementRef = React.createRef()\n }\n\n componentDidUpdate(prevProps, nextProps) {\n requestAnimationFrame(() => {\n let pageName = `new page at ${this.props.location.pathname}`\n if (document.title) {\n pageName = document.title\n }\n const pageHeadings = document.querySelectorAll(`#gatsby-focus-wrapper h1`)\n if (pageHeadings && pageHeadings.length) {\n pageName = pageHeadings[0].textContent\n }\n const newAnnouncement = `Navigated to ${pageName}`\n if (this.announcementRef.current) {\n const oldAnnouncement = this.announcementRef.current.innerText\n if (oldAnnouncement !== newAnnouncement) {\n this.announcementRef.current.innerText = newAnnouncement\n }\n }\n })\n }\n\n render() {\n return

\n }\n}\n\n// Fire on(Pre)RouteUpdate APIs\nclass RouteUpdates extends React.Component {\n constructor(props) {\n super(props)\n onPreRouteUpdate(props.location, null)\n }\n\n componentDidMount() {\n onRouteUpdate(this.props.location, null)\n }\n\n componentDidUpdate(prevProps, prevState, shouldFireRouteUpdate) {\n if (shouldFireRouteUpdate) {\n onRouteUpdate(this.props.location, prevProps.location)\n }\n }\n\n getSnapshotBeforeUpdate(prevProps) {\n if (this.props.location.pathname !== prevProps.location.pathname) {\n onPreRouteUpdate(this.props.location, prevProps.location)\n return true\n }\n\n return false\n }\n\n render() {\n return (\n \n {this.props.children}\n \n \n )\n }\n}\n\nRouteUpdates.propTypes = {\n location: PropTypes.object.isRequired,\n}\n\nexport { init, shouldUpdateScroll, RouteUpdates }\n","// Pulled from react-compat\n// https://github.com/developit/preact-compat/blob/7c5de00e7c85e2ffd011bf3af02899b63f699d3a/src/index.js#L349\nfunction shallowDiffers(a, b) {\n for (var i in a) {\n if (!(i in b)) return true;\n }for (var _i in b) {\n if (a[_i] !== b[_i]) return true;\n }return false;\n}\n\nexport default (function (instance, nextProps, nextState) {\n return shallowDiffers(instance.props, nextProps) || shallowDiffers(instance.state, nextState);\n});","import React from \"react\"\nimport loader, { PageResourceStatus } from \"./loader\"\nimport shallowCompare from \"shallow-compare\"\n\nclass EnsureResources extends React.Component {\n constructor(props) {\n super()\n const { location, pageResources } = props\n this.state = {\n location: { ...location },\n pageResources: pageResources || loader.loadPageSync(location.pathname),\n }\n }\n\n static getDerivedStateFromProps({ location }, prevState) {\n if (prevState.location.href !== location.href) {\n const pageResources = loader.loadPageSync(location.pathname)\n return {\n pageResources,\n location: { ...location },\n }\n }\n\n return {\n location: { ...location },\n }\n }\n\n loadResources(rawPath) {\n loader.loadPage(rawPath).then(pageResources => {\n if (pageResources && pageResources.status !== PageResourceStatus.Error) {\n this.setState({\n location: { ...window.location },\n pageResources,\n })\n } else {\n window.history.replaceState({}, ``, location.href)\n window.location = rawPath\n }\n })\n }\n\n shouldComponentUpdate(nextProps, nextState) {\n // Always return false if we're missing resources.\n if (!nextState.pageResources) {\n this.loadResources(nextProps.location.pathname)\n return false\n }\n\n // Check if the component or json have changed.\n if (this.state.pageResources !== nextState.pageResources) {\n return true\n }\n if (\n this.state.pageResources.component !== nextState.pageResources.component\n ) {\n return true\n }\n\n if (this.state.pageResources.json !== nextState.pageResources.json) {\n return true\n }\n // Check if location has changed on a page using internal routing\n // via matchPath configuration.\n if (\n this.state.location.key !== nextState.location.key &&\n nextState.pageResources.page &&\n (nextState.pageResources.page.matchPath ||\n nextState.pageResources.page.path)\n ) {\n return true\n }\n return shallowCompare(this, nextProps, nextState)\n }\n\n render() {\n if (process.env.NODE_ENV !== `production` && !this.state.pageResources) {\n throw new Error(\n `EnsureResources was not able to find resources for path: \"${this.props.location.pathname}\"\nThis typically means that an issue occurred building components for that path.\nRun \\`gatsby clean\\` to remove any cached elements.`\n )\n }\n\n return this.props.children(this.state)\n }\n}\n\nexport default EnsureResources\n","import { apiRunner, apiRunnerAsync } from \"./api-runner-browser\"\nimport React from \"react\"\nimport ReactDOM from \"react-dom\"\nimport { Router, navigate, Location, BaseContext } from \"@reach/router\"\nimport { ScrollContext } from \"gatsby-react-router-scroll\"\nimport domReady from \"@mikaelkristiansson/domready\"\nimport { StaticQueryContext } from \"gatsby\"\nimport {\n shouldUpdateScroll,\n init as navigationInit,\n RouteUpdates,\n} from \"./navigation\"\nimport emitter from \"./emitter\"\nimport PageRenderer from \"./page-renderer\"\nimport asyncRequires from \"$virtual/async-requires\"\nimport {\n setLoader,\n ProdLoader,\n publicLoader,\n PageResourceStatus,\n getStaticQueryResults,\n} from \"./loader\"\nimport EnsureResources from \"./ensure-resources\"\nimport stripPrefix from \"./strip-prefix\"\n\n// Generated during bootstrap\nimport matchPaths from \"$virtual/match-paths.json\"\n\nconst loader = new ProdLoader(asyncRequires, matchPaths)\nsetLoader(loader)\nloader.setApiRunner(apiRunner)\n\nwindow.asyncRequires = asyncRequires\nwindow.___emitter = emitter\nwindow.___loader = publicLoader\n\nnavigationInit()\n\napiRunnerAsync(`onClientEntry`).then(() => {\n // Let plugins register a service worker. The plugin just needs\n // to return true.\n if (apiRunner(`registerServiceWorker`).length > 0) {\n require(`./register-service-worker`)\n }\n\n // In gatsby v2 if Router is used in page using matchPaths\n // paths need to contain full path.\n // For example:\n // - page have `/app/*` matchPath\n // - inside template user needs to use `/app/xyz` as path\n // Resetting `basepath`/`baseuri` keeps current behaviour\n // to not introduce breaking change.\n // Remove this in v3\n const RouteHandler = props => (\n \n \n \n )\n\n const DataContext = React.createContext({})\n\n class GatsbyRoot extends React.Component {\n render() {\n const { children } = this.props\n return (\n \n {({ location }) => (\n \n {({ pageResources, location }) => {\n const staticQueryResults = getStaticQueryResults()\n return (\n \n \n {children}\n \n \n )\n }}\n \n )}\n \n )\n }\n }\n\n class LocationHandler extends React.Component {\n render() {\n return (\n \n {({ pageResources, location }) => (\n \n \n \n \n \n \n \n )}\n \n )\n }\n }\n\n const { pagePath, location: browserLoc } = window\n\n // Explicitly call navigate if the canonical path (window.pagePath)\n // is different to the browser path (window.location.pathname). But\n // only if NONE of the following conditions hold:\n //\n // - The url matches a client side route (page.matchPath)\n // - it's a 404 page\n // - it's the offline plugin shell (/offline-plugin-app-shell-fallback/)\n if (\n pagePath &&\n __BASE_PATH__ + pagePath !== browserLoc.pathname &&\n !(\n loader.findMatchPath(stripPrefix(browserLoc.pathname, __BASE_PATH__)) ||\n pagePath === `/404.html` ||\n pagePath.match(/^\\/404\\/?$/) ||\n pagePath.match(/^\\/offline-plugin-app-shell-fallback\\/?$/)\n )\n ) {\n navigate(__BASE_PATH__ + pagePath + browserLoc.search + browserLoc.hash, {\n replace: true,\n })\n }\n\n publicLoader.loadPage(browserLoc.pathname).then(page => {\n if (!page || page.status === PageResourceStatus.Error) {\n throw new Error(\n `page resources for ${browserLoc.pathname} not found. Not rendering React`\n )\n }\n\n window.___webpackCompilationHash = page.page.webpackCompilationHash\n\n const SiteRoot = apiRunner(\n `wrapRootElement`,\n { element: },\n ,\n ({ result }) => {\n return { element: result }\n }\n ).pop()\n\n const App = () => {SiteRoot}\n\n const renderer = apiRunner(\n `replaceHydrateFunction`,\n undefined,\n ReactDOM.hydrate\n )[0]\n\n domReady(() => {\n renderer(\n ,\n typeof window !== `undefined`\n ? document.getElementById(`___gatsby`)\n : void 0,\n () => {\n apiRunner(`onInitialClientRender`)\n }\n )\n })\n })\n})\n","function _inheritsLoose(subClass, superClass) {\n subClass.prototype = Object.create(superClass.prototype);\n subClass.prototype.constructor = subClass;\n subClass.__proto__ = superClass;\n}\n\nmodule.exports = _inheritsLoose;","import React from \"react\"\nimport PropTypes from \"prop-types\"\nimport Link, {\n withPrefix,\n withAssetPrefix,\n navigate,\n push,\n replace,\n navigateTo,\n parsePath,\n} from \"gatsby-link\"\nimport { useScrollRestoration } from \"gatsby-react-router-scroll\"\nimport PageRenderer from \"./public-page-renderer\"\nimport loader from \"./loader\"\n\nconst prefetchPathname = loader.enqueue\n\nconst StaticQueryContext = React.createContext({})\n\nfunction StaticQueryDataRenderer({ staticQueryData, data, query, render }) {\n const finalData = data\n ? data.data\n : staticQueryData[query] && staticQueryData[query].data\n\n return (\n \n {finalData && render(finalData)}\n {!finalData &&

Loading (StaticQuery)

}\n \n )\n}\n\nconst StaticQuery = props => {\n const { data, query, render, children } = props\n\n return (\n \n {staticQueryData => (\n \n )}\n \n )\n}\n\nconst useStaticQuery = query => {\n if (\n typeof React.useContext !== `function` &&\n process.env.NODE_ENV === `development`\n ) {\n throw new Error(\n `You're likely using a version of React that doesn't support Hooks\\n` +\n `Please update React and ReactDOM to 16.8.0 or later to use the useStaticQuery hook.`\n )\n }\n const context = React.useContext(StaticQueryContext)\n\n // query is a stringified number like `3303882` when wrapped with graphql, If a user forgets\n // to wrap the query in a grqphql, then casting it to a Number results in `NaN` allowing us to\n // catch the misuse of the API and give proper direction\n if (isNaN(Number(query))) {\n throw new Error(`useStaticQuery was called with a string but expects to be called using \\`graphql\\`. Try this:\n\nimport { useStaticQuery, graphql } from 'gatsby';\n\nuseStaticQuery(graphql\\`${query}\\`);\n`)\n }\n\n if (context?.[query]?.data) {\n return context[query].data\n } else {\n throw new Error(\n `The result of this StaticQuery could not be fetched.\\n\\n` +\n `This is likely a bug in Gatsby and if refreshing the page does not fix it, ` +\n `please open an issue in https://github.com/gatsbyjs/gatsby/issues`\n )\n }\n}\n\nStaticQuery.propTypes = {\n data: PropTypes.object,\n query: PropTypes.string.isRequired,\n render: PropTypes.func,\n children: PropTypes.func,\n}\n\nfunction graphql() {\n throw new Error(\n `It appears like Gatsby is misconfigured. Gatsby related \\`graphql\\` calls ` +\n `are supposed to only be evaluated at compile time, and then compiled away. ` +\n `Unfortunately, something went wrong and the query was left in the compiled code.\\n\\n` +\n `Unless your site has a complex or custom babel/Gatsby configuration this is likely a bug in Gatsby.`\n )\n}\n\nfunction unstable_collectionGraphql() {\n // TODO: Strip this out of the component and throw error if it gets called\n return null\n}\n\nexport {\n Link,\n withAssetPrefix,\n withPrefix,\n graphql,\n parsePath,\n navigate,\n push, // TODO replace for v3\n replace, // TODO remove replace for v3\n navigateTo, // TODO: remove navigateTo for v3\n useScrollRestoration,\n StaticQueryContext,\n StaticQuery,\n PageRenderer,\n useStaticQuery,\n prefetchPathname,\n // Experimental API\n unstable_collectionGraphql,\n}\n","var _extends = Object.assign || function (target) { for (var i = 1; i < arguments.length; i++) { var source = arguments[i]; for (var key in source) { if (Object.prototype.hasOwnProperty.call(source, key)) { target[key] = source[key]; } } } return target; };\n\nfunction _objectWithoutProperties(obj, keys) { var target = {}; for (var i in obj) { if (keys.indexOf(i) >= 0) continue; if (!Object.prototype.hasOwnProperty.call(obj, i)) continue; target[i] = obj[i]; } return target; }\n\nfunction _classCallCheck(instance, Constructor) { if (!(instance instanceof Constructor)) { throw new TypeError(\"Cannot call a class as a function\"); } }\n\nfunction _possibleConstructorReturn(self, call) { if (!self) { throw new ReferenceError(\"this hasn't been initialised - super() hasn't been called\"); } return call && (typeof call === \"object\" || typeof call === \"function\") ? call : self; }\n\nfunction _inherits(subClass, superClass) { if (typeof superClass !== \"function\" && superClass !== null) { throw new TypeError(\"Super expression must either be null or a function, not \" + typeof superClass); } subClass.prototype = Object.create(superClass && superClass.prototype, { constructor: { value: subClass, enumerable: false, writable: true, configurable: true } }); if (superClass) Object.setPrototypeOf ? Object.setPrototypeOf(subClass, superClass) : subClass.__proto__ = superClass; }\n\n/* eslint-disable jsx-a11y/anchor-has-content */\nimport React, { useContext } from \"react\";\nimport PropTypes from \"prop-types\";\nimport invariant from \"invariant\";\nimport createContext from \"create-react-context\";\nimport { polyfill } from \"react-lifecycles-compat\";\nimport { startsWith, pick, resolve, match, insertParams, validateRedirect, shallowCompare } from \"./lib/utils\";\nimport { globalHistory, navigate, createHistory, createMemorySource } from \"./lib/history\";\n\n////////////////////////////////////////////////////////////////////////////////\n\nvar createNamedContext = function createNamedContext(name, defaultValue) {\n var Ctx = createContext(defaultValue);\n Ctx.displayName = name;\n return Ctx;\n};\n\n////////////////////////////////////////////////////////////////////////////////\n// Location Context/Provider\nvar LocationContext = createNamedContext(\"Location\");\n\n// sets up a listener if there isn't one already so apps don't need to be\n// wrapped in some top level provider\nvar Location = function Location(_ref) {\n var children = _ref.children;\n return React.createElement(\n LocationContext.Consumer,\n null,\n function (context) {\n return context ? children(context) : React.createElement(\n LocationProvider,\n null,\n children\n );\n }\n );\n};\n\nvar LocationProvider = function (_React$Component) {\n _inherits(LocationProvider, _React$Component);\n\n function LocationProvider() {\n var _temp, _this, _ret;\n\n _classCallCheck(this, LocationProvider);\n\n for (var _len = arguments.length, args = Array(_len), _key = 0; _key < _len; _key++) {\n args[_key] = arguments[_key];\n }\n\n return _ret = (_temp = (_this = _possibleConstructorReturn(this, _React$Component.call.apply(_React$Component, [this].concat(args))), _this), _this.state = {\n context: _this.getContext(),\n refs: { unlisten: null }\n }, _temp), _possibleConstructorReturn(_this, _ret);\n }\n\n LocationProvider.prototype.getContext = function getContext() {\n var _props$history = this.props.history,\n navigate = _props$history.navigate,\n location = _props$history.location;\n\n return { navigate: navigate, location: location };\n };\n\n LocationProvider.prototype.componentDidCatch = function componentDidCatch(error, info) {\n if (isRedirect(error)) {\n var _navigate = this.props.history.navigate;\n\n _navigate(error.uri, { replace: true });\n } else {\n throw error;\n }\n };\n\n LocationProvider.prototype.componentDidUpdate = function componentDidUpdate(prevProps, prevState) {\n if (prevState.context.location !== this.state.context.location) {\n this.props.history._onTransitionComplete();\n }\n };\n\n LocationProvider.prototype.componentDidMount = function componentDidMount() {\n var _this2 = this;\n\n var refs = this.state.refs,\n history = this.props.history;\n\n history._onTransitionComplete();\n refs.unlisten = history.listen(function () {\n Promise.resolve().then(function () {\n // TODO: replace rAF with react deferred update API when it's ready https://github.com/facebook/react/issues/13306\n requestAnimationFrame(function () {\n if (!_this2.unmounted) {\n _this2.setState(function () {\n return { context: _this2.getContext() };\n });\n }\n });\n });\n });\n };\n\n LocationProvider.prototype.componentWillUnmount = function componentWillUnmount() {\n var refs = this.state.refs;\n\n this.unmounted = true;\n refs.unlisten();\n };\n\n LocationProvider.prototype.render = function render() {\n var context = this.state.context,\n children = this.props.children;\n\n return React.createElement(\n LocationContext.Provider,\n { value: context },\n typeof children === \"function\" ? children(context) : children || null\n );\n };\n\n return LocationProvider;\n}(React.Component);\n\n////////////////////////////////////////////////////////////////////////////////\n\n\nLocationProvider.defaultProps = {\n history: globalHistory\n};\nprocess.env.NODE_ENV !== \"production\" ? LocationProvider.propTypes = {\n history: PropTypes.object.isRequired\n} : void 0;\nvar ServerLocation = function ServerLocation(_ref2) {\n var url = _ref2.url,\n children = _ref2.children;\n\n var searchIndex = url.indexOf(\"?\");\n var searchExists = searchIndex > -1;\n var pathname = void 0;\n var search = \"\";\n var hash = \"\";\n\n if (searchExists) {\n pathname = url.substring(0, searchIndex);\n search = url.substring(searchIndex);\n } else {\n pathname = url;\n }\n\n return React.createElement(\n LocationContext.Provider,\n {\n value: {\n location: {\n pathname: pathname,\n search: search,\n hash: hash\n },\n navigate: function navigate() {\n throw new Error(\"You can't call navigate on the server.\");\n }\n }\n },\n children\n );\n};\n////////////////////////////////////////////////////////////////////////////////\n// Sets baseuri and basepath for nested routers and links\nvar BaseContext = createNamedContext(\"Base\", { baseuri: \"/\", basepath: \"/\" });\n\n////////////////////////////////////////////////////////////////////////////////\n// The main event, welcome to the show everybody.\nvar Router = function Router(props) {\n return React.createElement(\n BaseContext.Consumer,\n null,\n function (baseContext) {\n return React.createElement(\n Location,\n null,\n function (locationContext) {\n return React.createElement(RouterImpl, _extends({}, baseContext, locationContext, props));\n }\n );\n }\n );\n};\n\nvar RouterImpl = function (_React$PureComponent) {\n _inherits(RouterImpl, _React$PureComponent);\n\n function RouterImpl() {\n _classCallCheck(this, RouterImpl);\n\n return _possibleConstructorReturn(this, _React$PureComponent.apply(this, arguments));\n }\n\n RouterImpl.prototype.render = function render() {\n var _props = this.props,\n location = _props.location,\n _navigate2 = _props.navigate,\n basepath = _props.basepath,\n primary = _props.primary,\n children = _props.children,\n baseuri = _props.baseuri,\n _props$component = _props.component,\n component = _props$component === undefined ? \"div\" : _props$component,\n domProps = _objectWithoutProperties(_props, [\"location\", \"navigate\", \"basepath\", \"primary\", \"children\", \"baseuri\", \"component\"]);\n\n var routes = React.Children.toArray(children).reduce(function (array, child) {\n var routes = createRoute(basepath)(child);\n return array.concat(routes);\n }, []);\n var pathname = location.pathname;\n\n\n var match = pick(routes, pathname);\n\n if (match) {\n var params = match.params,\n uri = match.uri,\n route = match.route,\n element = match.route.value;\n\n // remove the /* from the end for child routes relative paths\n\n basepath = route.default ? basepath : route.path.replace(/\\*$/, \"\");\n\n var props = _extends({}, params, {\n uri: uri,\n location: location,\n navigate: function navigate(to, options) {\n return _navigate2(resolve(to, uri), options);\n }\n });\n\n var clone = React.cloneElement(element, props, element.props.children ? React.createElement(\n Router,\n { location: location, primary: primary },\n element.props.children\n ) : undefined);\n\n // using 'div' for < 16.3 support\n var FocusWrapper = primary ? FocusHandler : component;\n // don't pass any props to 'div'\n var wrapperProps = primary ? _extends({ uri: uri, location: location, component: component }, domProps) : domProps;\n\n return React.createElement(\n BaseContext.Provider,\n { value: { baseuri: uri, basepath: basepath } },\n React.createElement(\n FocusWrapper,\n wrapperProps,\n clone\n )\n );\n } else {\n // Not sure if we want this, would require index routes at every level\n // warning(\n // false,\n // `\\n\\nNothing matched:\\n\\t${\n // location.pathname\n // }\\n\\nPaths checked: \\n\\t${routes\n // .map(route => route.path)\n // .join(\n // \"\\n\\t\"\n // )}\\n\\nTo get rid of this warning, add a default NotFound component as child of Router:\n // \\n\\tlet NotFound = () =>

Not Found!

\n // \\n\\t\\n\\t \\n\\t {/* ... */}\\n\\t`\n // );\n return null;\n }\n };\n\n return RouterImpl;\n}(React.PureComponent);\n\nRouterImpl.defaultProps = {\n primary: true\n};\n\n\nvar FocusContext = createNamedContext(\"Focus\");\n\nvar FocusHandler = function FocusHandler(_ref3) {\n var uri = _ref3.uri,\n location = _ref3.location,\n component = _ref3.component,\n domProps = _objectWithoutProperties(_ref3, [\"uri\", \"location\", \"component\"]);\n\n return React.createElement(\n FocusContext.Consumer,\n null,\n function (requestFocus) {\n return React.createElement(FocusHandlerImpl, _extends({}, domProps, {\n component: component,\n requestFocus: requestFocus,\n uri: uri,\n location: location\n }));\n }\n );\n};\n\n// don't focus on initial render\nvar initialRender = true;\nvar focusHandlerCount = 0;\n\nvar FocusHandlerImpl = function (_React$Component2) {\n _inherits(FocusHandlerImpl, _React$Component2);\n\n function FocusHandlerImpl() {\n var _temp2, _this4, _ret2;\n\n _classCallCheck(this, FocusHandlerImpl);\n\n for (var _len2 = arguments.length, args = Array(_len2), _key2 = 0; _key2 < _len2; _key2++) {\n args[_key2] = arguments[_key2];\n }\n\n return _ret2 = (_temp2 = (_this4 = _possibleConstructorReturn(this, _React$Component2.call.apply(_React$Component2, [this].concat(args))), _this4), _this4.state = {}, _this4.requestFocus = function (node) {\n if (!_this4.state.shouldFocus && node) {\n node.focus();\n }\n }, _temp2), _possibleConstructorReturn(_this4, _ret2);\n }\n\n FocusHandlerImpl.getDerivedStateFromProps = function getDerivedStateFromProps(nextProps, prevState) {\n var initial = prevState.uri == null;\n if (initial) {\n return _extends({\n shouldFocus: true\n }, nextProps);\n } else {\n var myURIChanged = nextProps.uri !== prevState.uri;\n var navigatedUpToMe = prevState.location.pathname !== nextProps.location.pathname && nextProps.location.pathname === nextProps.uri;\n return _extends({\n shouldFocus: myURIChanged || navigatedUpToMe\n }, nextProps);\n }\n };\n\n FocusHandlerImpl.prototype.componentDidMount = function componentDidMount() {\n focusHandlerCount++;\n this.focus();\n };\n\n FocusHandlerImpl.prototype.componentWillUnmount = function componentWillUnmount() {\n focusHandlerCount--;\n if (focusHandlerCount === 0) {\n initialRender = true;\n }\n };\n\n FocusHandlerImpl.prototype.componentDidUpdate = function componentDidUpdate(prevProps, prevState) {\n if (prevProps.location !== this.props.location && this.state.shouldFocus) {\n this.focus();\n }\n };\n\n FocusHandlerImpl.prototype.focus = function focus() {\n if (process.env.NODE_ENV === \"test\") {\n // getting cannot read property focus of null in the tests\n // and that bit of global `initialRender` state causes problems\n // should probably figure it out!\n return;\n }\n\n var requestFocus = this.props.requestFocus;\n\n\n if (requestFocus) {\n requestFocus(this.node);\n } else {\n if (initialRender) {\n initialRender = false;\n } else if (this.node) {\n // React polyfills [autofocus] and it fires earlier than cDM,\n // so we were stealing focus away, this line prevents that.\n if (!this.node.contains(document.activeElement)) {\n this.node.focus();\n }\n }\n }\n };\n\n FocusHandlerImpl.prototype.render = function render() {\n var _this5 = this;\n\n var _props2 = this.props,\n children = _props2.children,\n style = _props2.style,\n requestFocus = _props2.requestFocus,\n _props2$component = _props2.component,\n Comp = _props2$component === undefined ? \"div\" : _props2$component,\n uri = _props2.uri,\n location = _props2.location,\n domProps = _objectWithoutProperties(_props2, [\"children\", \"style\", \"requestFocus\", \"component\", \"uri\", \"location\"]);\n\n return React.createElement(\n Comp,\n _extends({\n style: _extends({ outline: \"none\" }, style),\n tabIndex: \"-1\",\n ref: function ref(n) {\n return _this5.node = n;\n }\n }, domProps),\n React.createElement(\n FocusContext.Provider,\n { value: this.requestFocus },\n this.props.children\n )\n );\n };\n\n return FocusHandlerImpl;\n}(React.Component);\n\npolyfill(FocusHandlerImpl);\n\nvar k = function k() {};\n\n////////////////////////////////////////////////////////////////////////////////\nvar forwardRef = React.forwardRef;\n\nif (typeof forwardRef === \"undefined\") {\n forwardRef = function forwardRef(C) {\n return C;\n };\n}\n\nvar Link = forwardRef(function (_ref4, ref) {\n var innerRef = _ref4.innerRef,\n props = _objectWithoutProperties(_ref4, [\"innerRef\"]);\n\n return React.createElement(\n BaseContext.Consumer,\n null,\n function (_ref5) {\n var basepath = _ref5.basepath,\n baseuri = _ref5.baseuri;\n return React.createElement(\n Location,\n null,\n function (_ref6) {\n var location = _ref6.location,\n navigate = _ref6.navigate;\n\n var to = props.to,\n state = props.state,\n replace = props.replace,\n _props$getProps = props.getProps,\n getProps = _props$getProps === undefined ? k : _props$getProps,\n anchorProps = _objectWithoutProperties(props, [\"to\", \"state\", \"replace\", \"getProps\"]);\n\n var href = resolve(to, baseuri);\n var encodedHref = encodeURI(href);\n var isCurrent = location.pathname === encodedHref;\n var isPartiallyCurrent = startsWith(location.pathname, encodedHref);\n\n return React.createElement(\"a\", _extends({\n ref: ref || innerRef,\n \"aria-current\": isCurrent ? \"page\" : undefined\n }, anchorProps, getProps({ isCurrent: isCurrent, isPartiallyCurrent: isPartiallyCurrent, href: href, location: location }), {\n href: href,\n onClick: function onClick(event) {\n if (anchorProps.onClick) anchorProps.onClick(event);\n if (shouldNavigate(event)) {\n event.preventDefault();\n var shouldReplace = replace;\n if (typeof replace !== \"boolean\" && isCurrent) {\n var _location$state = _extends({}, location.state),\n key = _location$state.key,\n restState = _objectWithoutProperties(_location$state, [\"key\"]);\n\n shouldReplace = shallowCompare(_extends({}, state), restState);\n }\n navigate(href, {\n state: state,\n replace: shouldReplace\n });\n }\n }\n }));\n }\n );\n }\n );\n});\n\nLink.displayName = \"Link\";\n\nprocess.env.NODE_ENV !== \"production\" ? Link.propTypes = {\n to: PropTypes.string.isRequired\n} : void 0;\n\n////////////////////////////////////////////////////////////////////////////////\nfunction RedirectRequest(uri) {\n this.uri = uri;\n}\n\nvar isRedirect = function isRedirect(o) {\n return o instanceof RedirectRequest;\n};\n\nvar redirectTo = function redirectTo(to) {\n throw new RedirectRequest(to);\n};\n\nvar RedirectImpl = function (_React$Component3) {\n _inherits(RedirectImpl, _React$Component3);\n\n function RedirectImpl() {\n _classCallCheck(this, RedirectImpl);\n\n return _possibleConstructorReturn(this, _React$Component3.apply(this, arguments));\n }\n\n // Support React < 16 with this hook\n RedirectImpl.prototype.componentDidMount = function componentDidMount() {\n var _props3 = this.props,\n navigate = _props3.navigate,\n to = _props3.to,\n from = _props3.from,\n _props3$replace = _props3.replace,\n replace = _props3$replace === undefined ? true : _props3$replace,\n state = _props3.state,\n noThrow = _props3.noThrow,\n baseuri = _props3.baseuri,\n props = _objectWithoutProperties(_props3, [\"navigate\", \"to\", \"from\", \"replace\", \"state\", \"noThrow\", \"baseuri\"]);\n\n Promise.resolve().then(function () {\n var resolvedTo = resolve(to, baseuri);\n navigate(insertParams(resolvedTo, props), { replace: replace, state: state });\n });\n };\n\n RedirectImpl.prototype.render = function render() {\n var _props4 = this.props,\n navigate = _props4.navigate,\n to = _props4.to,\n from = _props4.from,\n replace = _props4.replace,\n state = _props4.state,\n noThrow = _props4.noThrow,\n baseuri = _props4.baseuri,\n props = _objectWithoutProperties(_props4, [\"navigate\", \"to\", \"from\", \"replace\", \"state\", \"noThrow\", \"baseuri\"]);\n\n var resolvedTo = resolve(to, baseuri);\n if (!noThrow) redirectTo(insertParams(resolvedTo, props));\n return null;\n };\n\n return RedirectImpl;\n}(React.Component);\n\nvar Redirect = function Redirect(props) {\n return React.createElement(\n BaseContext.Consumer,\n null,\n function (_ref7) {\n var baseuri = _ref7.baseuri;\n return React.createElement(\n Location,\n null,\n function (locationContext) {\n return React.createElement(RedirectImpl, _extends({}, locationContext, { baseuri: baseuri }, props));\n }\n );\n }\n );\n};\n\nprocess.env.NODE_ENV !== \"production\" ? Redirect.propTypes = {\n from: PropTypes.string,\n to: PropTypes.string.isRequired\n} : void 0;\n\n////////////////////////////////////////////////////////////////////////////////\nvar Match = function Match(_ref8) {\n var path = _ref8.path,\n children = _ref8.children;\n return React.createElement(\n BaseContext.Consumer,\n null,\n function (_ref9) {\n var baseuri = _ref9.baseuri;\n return React.createElement(\n Location,\n null,\n function (_ref10) {\n var navigate = _ref10.navigate,\n location = _ref10.location;\n\n var resolvedPath = resolve(path, baseuri);\n var result = match(resolvedPath, location.pathname);\n return children({\n navigate: navigate,\n location: location,\n match: result ? _extends({}, result.params, {\n uri: result.uri,\n path: path\n }) : null\n });\n }\n );\n }\n );\n};\n\n////////////////////////////////////////////////////////////////////////////////\n// Hooks\n\nvar useLocation = function useLocation() {\n var context = useContext(LocationContext);\n\n if (!context) {\n throw new Error(\"useLocation hook was used but a LocationContext.Provider was not found in the parent tree. Make sure this is used in a component that is a child of Router\");\n }\n\n return context.location;\n};\n\nvar useNavigate = function useNavigate() {\n var context = useContext(LocationContext);\n\n if (!context) {\n throw new Error(\"useNavigate hook was used but a LocationContext.Provider was not found in the parent tree. Make sure this is used in a component that is a child of Router\");\n }\n\n return context.navigate;\n};\n\nvar useParams = function useParams() {\n var context = useContext(BaseContext);\n\n if (!context) {\n throw new Error(\"useParams hook was used but a LocationContext.Provider was not found in the parent tree. Make sure this is used in a component that is a child of Router\");\n }\n\n var location = useLocation();\n\n var results = match(context.basepath, location.pathname);\n\n return results ? results.params : null;\n};\n\nvar useMatch = function useMatch(path) {\n if (!path) {\n throw new Error(\"useMatch(path: string) requires an argument of a string to match against\");\n }\n var context = useContext(BaseContext);\n\n if (!context) {\n throw new Error(\"useMatch hook was used but a LocationContext.Provider was not found in the parent tree. Make sure this is used in a component that is a child of Router\");\n }\n\n var location = useLocation();\n\n var resolvedPath = resolve(path, context.baseuri);\n var result = match(resolvedPath, location.pathname);\n return result ? _extends({}, result.params, {\n uri: result.uri,\n path: path\n }) : null;\n};\n\n////////////////////////////////////////////////////////////////////////////////\n// Junk\nvar stripSlashes = function stripSlashes(str) {\n return str.replace(/(^\\/+|\\/+$)/g, \"\");\n};\n\nvar createRoute = function createRoute(basepath) {\n return function (element) {\n if (!element) {\n return null;\n }\n\n if (element.type === React.Fragment && element.props.children) {\n return React.Children.map(element.props.children, createRoute(basepath));\n }\n !(element.props.path || element.props.default || element.type === Redirect) ? process.env.NODE_ENV !== \"production\" ? invariant(false, \": Children of must have a `path` or `default` prop, or be a ``. None found on element type `\" + element.type + \"`\") : invariant(false) : void 0;\n\n !!(element.type === Redirect && (!element.props.from || !element.props.to)) ? process.env.NODE_ENV !== \"production\" ? invariant(false, \" requires both \\\"from\\\" and \\\"to\\\" props when inside a .\") : invariant(false) : void 0;\n\n !!(element.type === Redirect && !validateRedirect(element.props.from, element.props.to)) ? process.env.NODE_ENV !== \"production\" ? invariant(false, \" has mismatched dynamic segments, ensure both paths have the exact same dynamic segments.\") : invariant(false) : void 0;\n\n if (element.props.default) {\n return { value: element, default: true };\n }\n\n var elementPath = element.type === Redirect ? element.props.from : element.props.path;\n\n var path = elementPath === \"/\" ? basepath : stripSlashes(basepath) + \"/\" + stripSlashes(elementPath);\n\n return {\n value: element,\n default: element.props.default,\n path: element.props.children ? stripSlashes(path) + \"/*\" : path\n };\n };\n};\n\nvar shouldNavigate = function shouldNavigate(event) {\n return !event.defaultPrevented && event.button === 0 && !(event.metaKey || event.altKey || event.ctrlKey || event.shiftKey);\n};\n\n////////////////////////////////////////////////////////////////////////\nexport { Link, Location, LocationProvider, Match, Redirect, Router, ServerLocation, createHistory, createMemorySource, isRedirect, navigate, redirectTo, globalHistory, match as matchPath, useLocation, useNavigate, useParams, useMatch , BaseContext };","function _typeof(obj) {\n \"@babel/helpers - typeof\";\n\n if (typeof Symbol === \"function\" && typeof Symbol.iterator === \"symbol\") {\n module.exports = _typeof = function _typeof(obj) {\n return typeof obj;\n };\n } else {\n module.exports = _typeof = function _typeof(obj) {\n return obj && typeof Symbol === \"function\" && obj.constructor === Symbol && obj !== Symbol.prototype ? \"symbol\" : typeof obj;\n };\n }\n\n return _typeof(obj);\n}\n\nmodule.exports = _typeof;","/**\n * Remove a prefix from a string. Return the input string if the given prefix\n * isn't found.\n */\n\nexport default function stripPrefix(str, prefix = ``) {\n if (!prefix) {\n return str\n }\n\n if (str === prefix) {\n return `/`\n }\n\n if (str.startsWith(`${prefix}/`)) {\n return str.slice(prefix.length)\n }\n\n return str\n}\n","\"use strict\";\n\nexports.__esModule = true;\nexports.parsePath = parsePath;\n\nfunction parsePath(path) {\n var pathname = path || \"/\";\n var search = \"\";\n var hash = \"\";\n var hashIndex = pathname.indexOf(\"#\");\n\n if (hashIndex !== -1) {\n hash = pathname.substr(hashIndex);\n pathname = pathname.substr(0, hashIndex);\n }\n\n var searchIndex = pathname.indexOf(\"?\");\n\n if (searchIndex !== -1) {\n search = pathname.substr(searchIndex);\n pathname = pathname.substr(0, searchIndex);\n }\n\n return {\n pathname: pathname,\n search: search === \"?\" ? \"\" : search,\n hash: hash === \"#\" ? \"\" : hash\n };\n}","export default function _inheritsLoose(subClass, superClass) {\n subClass.prototype = Object.create(superClass.prototype);\n subClass.prototype.constructor = subClass;\n subClass.__proto__ = superClass;\n}","\"use strict\";\n\nexports.registerServiceWorker = function () {\n return true;\n};\n\nvar prefetchedPathnames = [];\n\nexports.onServiceWorkerActive = function (_ref) {\n var getResourceURLsForPathname = _ref.getResourceURLsForPathname,\n serviceWorker = _ref.serviceWorker;\n\n // if the SW has just updated then clear the path dependencies and don't cache\n // stuff, since we're on the old revision until we navigate to another page\n if (window.___swUpdated) {\n serviceWorker.active.postMessage({\n gatsbyApi: \"clearPathResources\"\n });\n return;\n } // grab nodes from head of document\n\n\n var nodes = document.querySelectorAll(\"\\n head > script[src],\\n head > link[href],\\n head > style[data-href]\\n \"); // get all resource URLs\n\n var headerResources = [].slice.call(nodes).map(function (node) {\n return node.src || node.href || node.getAttribute(\"data-href\");\n }); // Loop over prefetched pages and add their resources to an array,\n // plus specify which resources are required for those paths.\n\n var prefetchedResources = [];\n prefetchedPathnames.forEach(function (path) {\n var resources = getResourceURLsForPathname(path);\n prefetchedResources.push.apply(prefetchedResources, resources);\n serviceWorker.active.postMessage({\n gatsbyApi: \"setPathResources\",\n path: path,\n resources: resources\n });\n }); // Loop over all resources and fetch the page component + JSON data\n // to add it to the SW cache.\n\n var resources = [].concat(headerResources, prefetchedResources);\n resources.forEach(function (resource) {\n // Create a prefetch link for each resource, so Workbox runtime-caches them\n var link = document.createElement(\"link\");\n link.rel = \"prefetch\";\n link.href = resource;\n link.onload = link.remove;\n link.onerror = link.remove;\n document.head.appendChild(link);\n });\n};\n\nexports.onPostPrefetchPathname = function (_ref2) {\n var pathname = _ref2.pathname,\n getResourceURLsForPathname = _ref2.getResourceURLsForPathname;\n // do nothing if the SW has just updated, since we still have old pages in\n // memory which we don't want to be whitelisted\n if (window.___swUpdated) return;\n\n if (\"serviceWorker\" in navigator) {\n var _navigator = navigator,\n serviceWorker = _navigator.serviceWorker;\n\n if (serviceWorker.controller === null) {\n // if SW is not installed, we need to record any prefetches\n // that happen so we can then add them to SW cache once installed\n prefetchedPathnames.push(pathname);\n } else {\n serviceWorker.controller.postMessage({\n gatsbyApi: \"setPathResources\",\n path: pathname,\n resources: getResourceURLsForPathname(pathname)\n });\n }\n }\n};","const support = function (feature) {\n if (typeof document === `undefined`) {\n return false\n }\n const fakeLink = document.createElement(`link`)\n try {\n if (fakeLink.relList && typeof fakeLink.relList.supports === `function`) {\n return fakeLink.relList.supports(feature)\n }\n } catch (err) {\n return false\n }\n return false\n}\n\nconst linkPrefetchStrategy = function (url, options) {\n return new Promise((resolve, reject) => {\n if (typeof document === `undefined`) {\n reject()\n return\n }\n\n const link = document.createElement(`link`)\n link.setAttribute(`rel`, `prefetch`)\n link.setAttribute(`href`, url)\n\n Object.keys(options).forEach(key => {\n link.setAttribute(key, options[key])\n })\n\n link.onload = resolve\n link.onerror = reject\n\n const parentElement =\n document.getElementsByTagName(`head`)[0] ||\n document.getElementsByName(`script`)[0].parentNode\n parentElement.appendChild(link)\n })\n}\n\nconst xhrPrefetchStrategy = function (url) {\n return new Promise((resolve, reject) => {\n const req = new XMLHttpRequest()\n req.open(`GET`, url, true)\n\n req.onload = () => {\n if (req.status === 200) {\n resolve()\n } else {\n reject()\n }\n }\n\n req.send(null)\n })\n}\n\nconst supportedPrefetchStrategy = support(`prefetch`)\n ? linkPrefetchStrategy\n : xhrPrefetchStrategy\n\nconst preFetched = {}\n\nconst prefetch = function (url, options) {\n return new Promise(resolve => {\n if (preFetched[url]) {\n resolve()\n return\n }\n\n supportedPrefetchStrategy(url, options)\n .then(() => {\n resolve()\n preFetched[url] = true\n })\n .catch(() => {}) // 404s are logged to the console anyway\n })\n}\n\nexport default prefetch\n","import prefetchHelper from \"./prefetch\"\nimport emitter from \"./emitter\"\nimport { setMatchPaths, findPath, findMatchPath } from \"./find-path\"\n\n/**\n * Available resource loading statuses\n */\nexport const PageResourceStatus = {\n /**\n * At least one of critical resources failed to load\n */\n Error: `error`,\n /**\n * Resources loaded successfully\n */\n Success: `success`,\n}\n\nconst preferDefault = m => (m && m.default) || m\n\nconst stripSurroundingSlashes = s => {\n s = s[0] === `/` ? s.slice(1) : s\n s = s.endsWith(`/`) ? s.slice(0, -1) : s\n return s\n}\n\nconst createPageDataUrl = path => {\n const fixedPath = path === `/` ? `index` : stripSurroundingSlashes(path)\n return `${__PATH_PREFIX__}/page-data/${fixedPath}/page-data.json`\n}\n\nfunction doFetch(url, method = `GET`) {\n return new Promise((resolve, reject) => {\n const req = new XMLHttpRequest()\n req.open(method, url, true)\n req.onreadystatechange = () => {\n if (req.readyState == 4) {\n resolve(req)\n }\n }\n req.send(null)\n })\n}\n\nconst doesConnectionSupportPrefetch = () => {\n if (\n `connection` in navigator &&\n typeof navigator.connection !== `undefined`\n ) {\n if ((navigator.connection.effectiveType || ``).includes(`2g`)) {\n return false\n }\n if (navigator.connection.saveData) {\n return false\n }\n }\n return true\n}\n\nconst toPageResources = (pageData, component = null) => {\n const page = {\n componentChunkName: pageData.componentChunkName,\n path: pageData.path,\n webpackCompilationHash: pageData.webpackCompilationHash,\n matchPath: pageData.matchPath,\n staticQueryHashes: pageData.staticQueryHashes,\n }\n\n return {\n component,\n json: pageData.result,\n page,\n }\n}\n\nexport class BaseLoader {\n constructor(loadComponent, matchPaths) {\n // Map of pagePath -> Page. Where Page is an object with: {\n // status: PageResourceStatus.Success || PageResourceStatus.Error,\n // payload: PageResources, // undefined if PageResourceStatus.Error\n // }\n // PageResources is {\n // component,\n // json: pageData.result,\n // page: {\n // componentChunkName,\n // path,\n // webpackCompilationHash,\n // staticQueryHashes\n // },\n // staticQueryResults\n // }\n this.pageDb = new Map()\n this.inFlightDb = new Map()\n this.staticQueryDb = {}\n this.pageDataDb = new Map()\n this.prefetchTriggered = new Set()\n this.prefetchCompleted = new Set()\n this.loadComponent = loadComponent\n setMatchPaths(matchPaths)\n }\n\n inFlightNetworkRequests = new Map()\n\n memoizedGet(url) {\n let inFlightPromise = this.inFlightNetworkRequests.get(url)\n\n if (!inFlightPromise) {\n inFlightPromise = doFetch(url, `GET`)\n this.inFlightNetworkRequests.set(url, inFlightPromise)\n }\n\n // Prefer duplication with then + catch over .finally to prevent problems in ie11 + firefox\n return inFlightPromise\n .then(response => {\n this.inFlightNetworkRequests.delete(url)\n return response\n })\n .catch(err => {\n this.inFlightNetworkRequests.delete(url)\n throw err\n })\n }\n\n setApiRunner(apiRunner) {\n this.apiRunner = apiRunner\n this.prefetchDisabled = apiRunner(`disableCorePrefetching`).some(a => a)\n }\n\n fetchPageDataJson(loadObj) {\n const { pagePath, retries = 0 } = loadObj\n const url = createPageDataUrl(pagePath)\n return this.memoizedGet(url).then(req => {\n const { status, responseText } = req\n\n // Handle 200\n if (status === 200) {\n try {\n const jsonPayload = JSON.parse(responseText)\n if (jsonPayload.path === undefined) {\n throw new Error(`not a valid pageData response`)\n }\n\n return Object.assign(loadObj, {\n status: PageResourceStatus.Success,\n payload: jsonPayload,\n })\n } catch (err) {\n // continue regardless of error\n }\n }\n\n // Handle 404\n if (status === 404 || status === 200) {\n // If the request was for a 404 page and it doesn't exist, we're done\n if (pagePath === `/404.html`) {\n return Object.assign(loadObj, {\n status: PageResourceStatus.Error,\n })\n }\n\n // Need some code here to cache the 404 request. In case\n // multiple loadPageDataJsons result in 404s\n return this.fetchPageDataJson(\n Object.assign(loadObj, { pagePath: `/404.html`, notFound: true })\n )\n }\n\n // handle 500 response (Unrecoverable)\n if (status === 500) {\n return Object.assign(loadObj, {\n status: PageResourceStatus.Error,\n })\n }\n\n // Handle everything else, including status === 0, and 503s. Should retry\n if (retries < 3) {\n return this.fetchPageDataJson(\n Object.assign(loadObj, { retries: retries + 1 })\n )\n }\n\n // Retried 3 times already, result is an error.\n return Object.assign(loadObj, {\n status: PageResourceStatus.Error,\n })\n })\n }\n\n loadPageDataJson(rawPath) {\n const pagePath = findPath(rawPath)\n if (this.pageDataDb.has(pagePath)) {\n return Promise.resolve(this.pageDataDb.get(pagePath))\n }\n\n return this.fetchPageDataJson({ pagePath }).then(pageData => {\n this.pageDataDb.set(pagePath, pageData)\n\n return pageData\n })\n }\n\n findMatchPath(rawPath) {\n return findMatchPath(rawPath)\n }\n\n // TODO check all uses of this and whether they use undefined for page resources not exist\n loadPage(rawPath) {\n const pagePath = findPath(rawPath)\n if (this.pageDb.has(pagePath)) {\n const page = this.pageDb.get(pagePath)\n return Promise.resolve(page.payload)\n }\n\n if (this.inFlightDb.has(pagePath)) {\n return this.inFlightDb.get(pagePath)\n }\n\n const inFlightPromise = Promise.all([\n this.loadAppData(),\n this.loadPageDataJson(pagePath),\n ]).then(allData => {\n const result = allData[1]\n if (result.status === PageResourceStatus.Error) {\n return {\n status: PageResourceStatus.Error,\n }\n }\n\n let pageData = result.payload\n const { componentChunkName, staticQueryHashes = [] } = pageData\n\n const finalResult = {}\n\n const componentChunkPromise = this.loadComponent(componentChunkName).then(\n component => {\n finalResult.createdAt = new Date()\n let pageResources\n if (!component) {\n finalResult.status = PageResourceStatus.Error\n } else {\n finalResult.status = PageResourceStatus.Success\n if (result.notFound === true) {\n finalResult.notFound = true\n }\n pageData = Object.assign(pageData, {\n webpackCompilationHash: allData[0]\n ? allData[0].webpackCompilationHash\n : ``,\n })\n pageResources = toPageResources(pageData, component)\n }\n // undefined if final result is an error\n return pageResources\n }\n )\n\n const staticQueryBatchPromise = Promise.all(\n staticQueryHashes.map(staticQueryHash => {\n // Check for cache in case this static query result has already been loaded\n if (this.staticQueryDb[staticQueryHash]) {\n const jsonPayload = this.staticQueryDb[staticQueryHash]\n return { staticQueryHash, jsonPayload }\n }\n\n return this.memoizedGet(\n `${__PATH_PREFIX__}/page-data/sq/d/${staticQueryHash}.json`\n ).then(req => {\n const jsonPayload = JSON.parse(req.responseText)\n return { staticQueryHash, jsonPayload }\n })\n })\n ).then(staticQueryResults => {\n const staticQueryResultsMap = {}\n\n staticQueryResults.forEach(({ staticQueryHash, jsonPayload }) => {\n staticQueryResultsMap[staticQueryHash] = jsonPayload\n this.staticQueryDb[staticQueryHash] = jsonPayload\n })\n\n return staticQueryResultsMap\n })\n\n return Promise.all([componentChunkPromise, staticQueryBatchPromise]).then(\n ([pageResources, staticQueryResults]) => {\n let payload\n if (pageResources) {\n payload = { ...pageResources, staticQueryResults }\n finalResult.payload = payload\n emitter.emit(`onPostLoadPageResources`, {\n page: payload,\n pageResources: payload,\n })\n }\n\n this.pageDb.set(pagePath, finalResult)\n\n return payload\n }\n )\n })\n\n inFlightPromise\n .then(response => {\n this.inFlightDb.delete(pagePath)\n })\n .catch(error => {\n this.inFlightDb.delete(pagePath)\n throw error\n })\n\n this.inFlightDb.set(pagePath, inFlightPromise)\n\n return inFlightPromise\n }\n\n // returns undefined if loading page ran into errors\n loadPageSync(rawPath) {\n const pagePath = findPath(rawPath)\n if (this.pageDb.has(pagePath)) {\n const pageData = this.pageDb.get(pagePath).payload\n return pageData\n }\n return undefined\n }\n\n shouldPrefetch(pagePath) {\n // Skip prefetching if we know user is on slow or constrained connection\n if (!doesConnectionSupportPrefetch()) {\n return false\n }\n\n // Check if the page exists.\n if (this.pageDb.has(pagePath)) {\n return false\n }\n\n return true\n }\n\n prefetch(pagePath) {\n if (!this.shouldPrefetch(pagePath)) {\n return false\n }\n\n // Tell plugins with custom prefetching logic that they should start\n // prefetching this path.\n if (!this.prefetchTriggered.has(pagePath)) {\n this.apiRunner(`onPrefetchPathname`, { pathname: pagePath })\n this.prefetchTriggered.add(pagePath)\n }\n\n // If a plugin has disabled core prefetching, stop now.\n if (this.prefetchDisabled) {\n return false\n }\n\n const realPath = findPath(pagePath)\n // Todo make doPrefetch logic cacheable\n // eslint-disable-next-line consistent-return\n this.doPrefetch(realPath).then(() => {\n if (!this.prefetchCompleted.has(pagePath)) {\n this.apiRunner(`onPostPrefetchPathname`, { pathname: pagePath })\n this.prefetchCompleted.add(pagePath)\n }\n })\n\n return true\n }\n\n doPrefetch(pagePath) {\n throw new Error(`doPrefetch not implemented`)\n }\n\n hovering(rawPath) {\n this.loadPage(rawPath)\n }\n\n getResourceURLsForPathname(rawPath) {\n const pagePath = findPath(rawPath)\n const page = this.pageDataDb.get(pagePath)\n if (page) {\n const pageResources = toPageResources(page.payload)\n\n return [\n ...createComponentUrls(pageResources.page.componentChunkName),\n createPageDataUrl(pagePath),\n ]\n } else {\n return null\n }\n }\n\n isPageNotFound(rawPath) {\n const pagePath = findPath(rawPath)\n const page = this.pageDb.get(pagePath)\n return page && page.notFound === true\n }\n\n loadAppData(retries = 0) {\n return this.memoizedGet(`${__PATH_PREFIX__}/page-data/app-data.json`).then(\n req => {\n const { status, responseText } = req\n\n let appData\n\n if (status !== 200 && retries < 3) {\n // Retry 3 times incase of non-200 responses\n return this.loadAppData(retries + 1)\n }\n\n // Handle 200\n if (status === 200) {\n try {\n const jsonPayload = JSON.parse(responseText)\n if (jsonPayload.webpackCompilationHash === undefined) {\n throw new Error(`not a valid app-data response`)\n }\n\n appData = jsonPayload\n } catch (err) {\n // continue regardless of error\n }\n }\n\n return appData\n }\n )\n }\n}\n\nconst createComponentUrls = componentChunkName =>\n (window.___chunkMapping[componentChunkName] || []).map(\n chunk => __PATH_PREFIX__ + chunk\n )\n\nexport class ProdLoader extends BaseLoader {\n constructor(asyncRequires, matchPaths) {\n const loadComponent = chunkName =>\n asyncRequires.components[chunkName]\n ? asyncRequires.components[chunkName]()\n .then(preferDefault)\n // loader will handle the case when component is null\n .catch(() => null)\n : Promise.resolve()\n\n super(loadComponent, matchPaths)\n }\n\n doPrefetch(pagePath) {\n const pageDataUrl = createPageDataUrl(pagePath)\n return prefetchHelper(pageDataUrl, {\n crossOrigin: `anonymous`,\n as: `fetch`,\n })\n .then(() =>\n // This was just prefetched, so will return a response from\n // the cache instead of making another request to the server\n this.loadPageDataJson(pagePath)\n )\n .then(result => {\n if (result.status !== PageResourceStatus.Success) {\n return Promise.resolve()\n }\n const pageData = result.payload\n const chunkName = pageData.componentChunkName\n const componentUrls = createComponentUrls(chunkName)\n return Promise.all(componentUrls.map(prefetchHelper)).then(\n () => pageData\n )\n })\n }\n\n loadPageDataJson(rawPath) {\n return super.loadPageDataJson(rawPath).then(data => {\n if (data.notFound) {\n // check if html file exist using HEAD request:\n // if it does we should navigate to it instead of showing 404\n return doFetch(rawPath, `HEAD`).then(req => {\n if (req.status === 200) {\n // page (.html file) actually exist (or we asked for 404 )\n // returning page resources status as errored to trigger\n // regular browser navigation to given page\n return {\n status: PageResourceStatus.Error,\n }\n }\n\n // if HEAD request wasn't 200, return notFound result\n // and show 404 page\n return data\n })\n }\n return data\n })\n }\n}\n\nlet instance\n\nexport const setLoader = _loader => {\n instance = _loader\n}\n\nexport const publicLoader = {\n // Deprecated methods. As far as we're aware, these are only used by\n // core gatsby and the offline plugin, however there's a very small\n // chance they're called by others.\n getResourcesForPathname: rawPath => {\n console.warn(\n `Warning: getResourcesForPathname is deprecated. Use loadPage instead`\n )\n return instance.i.loadPage(rawPath)\n },\n getResourcesForPathnameSync: rawPath => {\n console.warn(\n `Warning: getResourcesForPathnameSync is deprecated. Use loadPageSync instead`\n )\n return instance.i.loadPageSync(rawPath)\n },\n enqueue: rawPath => instance.prefetch(rawPath),\n\n // Real methods\n getResourceURLsForPathname: rawPath =>\n instance.getResourceURLsForPathname(rawPath),\n loadPage: rawPath => instance.loadPage(rawPath),\n loadPageSync: rawPath => instance.loadPageSync(rawPath),\n prefetch: rawPath => instance.prefetch(rawPath),\n isPageNotFound: rawPath => instance.isPageNotFound(rawPath),\n hovering: rawPath => instance.hovering(rawPath),\n loadAppData: () => instance.loadAppData(),\n}\n\nexport default publicLoader\n\nexport function getStaticQueryResults() {\n return instance.staticQueryDb\n}\n","\"use strict\";\n\nvar _interopRequireWildcard = require(\"@babel/runtime/helpers/interopRequireWildcard\");\n\nvar _interopRequireDefault = require(\"@babel/runtime/helpers/interopRequireDefault\");\n\nexports.__esModule = true;\nexports.ScrollContainer = void 0;\n\nvar _extends2 = _interopRequireDefault(require(\"@babel/runtime/helpers/extends\"));\n\nvar _inheritsLoose2 = _interopRequireDefault(require(\"@babel/runtime/helpers/inheritsLoose\"));\n\nvar React = _interopRequireWildcard(require(\"react\"));\n\nvar _reactDom = _interopRequireDefault(require(\"react-dom\"));\n\nvar _propTypes = _interopRequireDefault(require(\"prop-types\"));\n\nvar _scrollHandler = require(\"./scroll-handler\");\n\nvar _router = require(\"@reach/router\");\n\n// TODO: In Gatsby v3, this file should be removed.\n// We are deprecating this in V2 in favor of useScrollRestoration\nvar propTypes = {\n scrollKey: _propTypes.default.string.isRequired,\n shouldUpdateScroll: _propTypes.default.func,\n children: _propTypes.default.element.isRequired\n};\nvar hasNotWarnedDeprecation = true;\n\nvar ScrollContainerImplementation = /*#__PURE__*/function (_React$Component) {\n (0, _inheritsLoose2.default)(ScrollContainerImplementation, _React$Component);\n\n function ScrollContainerImplementation(props) {\n var _this;\n\n _this = _React$Component.call(this, props) || this;\n\n if (process.env.NODE_ENV !== \"production\" && hasNotWarnedDeprecation) {\n hasNotWarnedDeprecation = false;\n console.log(\"Deprecation Warning:\\n\\n Gatsby is deprecated in Gatsby v2 and will be removed in Gatsby v3.\\n Update to the React hook alternative useScrollRestoration, like this:.\\n \\n ```\\n import React from 'react';\\n import { useScrollRestoration } from 'gatsby-react-router-scroll';\\n\\n function Component() {\\n const scrollRestoration = useScrollRestoration('\" + _this.props.scrollKey + \"');\\n\\n return

` the plugin won't catch it and\n * will navigate to an external link instead of doing a pushState resulting\n * in `https://example.com/myapp/https://example.com/not-my-app`\n */\n pathStartRegEx.test(slashedPathname(destination.pathname)) === false ||\n /**\n * Don't catch links pointed at what look like file extensions (other than\n * .htm/html extensions).\n */\n destination.pathname.search(pathFileExtensionRegEx) !== -1\n );\n};\n\nexports.pathIsNotHandledByApp = pathIsNotHandledByApp;\n\nvar hashShouldBeFollowed = function hashShouldBeFollowed(origin, destination) {\n return destination.hash !== \"\" && (\n /**\n * Dynamically created anchor links (href=\"#my-anchor\") do not always\n * have pathname on IE\n */\n destination.pathname === \"\" ||\n /* Don't catch links pointed to the same page but with a hash. */\n destination.pathname === origin.pathname);\n};\n\nexports.hashShouldBeFollowed = hashShouldBeFollowed;\n\nvar routeThroughBrowserOrApp = function routeThroughBrowserOrApp(hrefHandler, pluginOptions) {\n return function (event) {\n if (window.___failedResources) return true;\n if (userIsForcingNavigation(event)) return true;\n if (navigationWasHandledElsewhere(event)) return true;\n var clickedAnchor = findClosestAnchor(event.target);\n if (clickedAnchor == null) return true;\n if (authorIsForcingNavigation(clickedAnchor)) return true; // IE clears the host value if the anchor href changed after creation, e.g.\n // in React. Creating a new anchor element to ensure host value is present\n\n var destination = document.createElement(\"a\"); // https://html.spec.whatwg.org/multipage/links.html#concept-hyperlink-url-set\n // If clickedAnchor has no href attribute like `example`, the href getter returns empty string.\n\n if (clickedAnchor.href !== \"\") {\n destination.href = clickedAnchor.href;\n }\n\n if (clickedAnchor.href instanceof SVGAnimatedString) {\n destination.href = clickedAnchor.href.animVal;\n } // In IE, the default port is included in the anchor host but excluded from\n // the location host. This affects the ability to directly compare\n // location host to anchor host. For example: http://example.com would\n // have a location.host of 'example.com' and an destination.host of\n // 'example.com:80' Creating anchor from the location.href to normalize the\n // host value.\n\n\n var origin = document.createElement(\"a\");\n origin.href = window.location.href;\n if (urlsAreOnSameOrigin(origin, destination) === false) return true; // Regex to test pathname against pathPrefix\n\n var pathStartRegEx = new RegExp(\"^\" + (0, _escapeStringRegexp.default)((0, _gatsby.withPrefix)(\"/\")));\n if (pathIsNotHandledByApp(destination, pathStartRegEx)) return true;\n if (hashShouldBeFollowed(origin, destination)) return true;\n\n if (pluginOptions.excludePattern) {\n var excludeRegex = new RegExp(pluginOptions.excludePattern);\n\n if (excludeRegex.test(destination.pathname)) {\n return true;\n }\n }\n\n event.preventDefault(); // See issue #8907: destination.pathname already includes pathPrefix added\n // by gatsby-transformer-remark but gatsby-link.navigate needs href without\n\n var destinationPathname = slashedPathname(destination.pathname).replace(pathStartRegEx, \"/\");\n hrefHandler(\"\" + destinationPathname + destination.search + destination.hash);\n return false;\n };\n};\n\nexports.routeThroughBrowserOrApp = routeThroughBrowserOrApp;\n\nfunction _default(root, pluginOptions, cb) {\n var clickHandler = routeThroughBrowserOrApp(cb, pluginOptions);\n root.addEventListener(\"click\", clickHandler);\n return function () {\n return root.removeEventListener(\"click\", clickHandler);\n };\n}","const preferDefault = m => (m && m.default) || m\n\nif (process.env.BUILD_STAGE === `develop`) {\n module.exports = preferDefault(require(`./public-page-renderer-dev`))\n} else if (process.env.BUILD_STAGE === `build-javascript`) {\n module.exports = preferDefault(require(`./public-page-renderer-prod`))\n} else {\n module.exports = () => null\n}\n","\"use strict\";\n\nvar _interopRequireDefault = require(\"@babel/runtime/helpers/interopRequireDefault\");\n\nvar _gatsby = require(\"gatsby\");\n\nvar _getManifestPathname = _interopRequireDefault(require(\"./get-manifest-pathname\"));\n\n/* global __MANIFEST_PLUGIN_HAS_LOCALISATION__ */\n// when we don't have localisation in our manifest, we tree shake everything away\nif (__MANIFEST_PLUGIN_HAS_LOCALISATION__) {\n var withPrefix = _gatsby.withAssetPrefix || _gatsby.withPrefix;\n\n exports.onRouteUpdate = function (_ref, pluginOptions) {\n var location = _ref.location;\n var localize = pluginOptions.localize;\n var manifestFilename = (0, _getManifestPathname.default)(location.pathname, localize);\n var manifestEl = document.head.querySelector(\"link[rel=\\\"manifest\\\"]\");\n\n if (manifestEl) {\n manifestEl.setAttribute(\"href\", withPrefix(manifestFilename));\n }\n };\n}","/*\n Why commonjs and not ES imports/exports?\n\n This module is used to alias `create-react-context` package, but drop the the actual implementation part\n because Gatsby requires version of react that has implementatoin baked in.\n \n Package source is using ES modules:\n - https://github.com/jamiebuilds/create-react-context/blob/v0.3.0/src/index.js\n \n But to build this package `babel-plugin-add-module-exports` is used ( https://www.npmjs.com/package/babel-plugin-add-module-exports).\n Which result in both `module.exports` and `exports.default` being set to same thing.\n\n We don't use that babel plugin so we only have `exports.default`.\n\n This cause problems in various 3rd party react components that rely on `module.exports` being set.\n See https://github.com/gatsbyjs/gatsby/issues/23645 for example of it.\n \n Instead of adding same babel plugin we mimic output here. Adding babel plugin just for this would:\n a) unnecesairly slow down compilation for all other files (if we just apply it everywhere)\n b) or complicate babel-loader configuration with overwrite specifically for this file\n*/\n\nconst { createContext } = require(`react`)\n\nmodule.exports = createContext\nmodule.exports.default = createContext\n","'use strict';\n\nvar matchOperatorsRe = /[|\\\\{}()[\\]^$+*?.]/g;\n\nmodule.exports = function (str) {\n if (typeof str !== 'string') {\n throw new TypeError('Expected a string');\n }\n\n return str.replace(matchOperatorsRe, '\\\\$&');\n};","function _extends() {\n module.exports = _extends = Object.assign || function (target) {\n for (var i = 1; i < arguments.length; i++) {\n var source = arguments[i];\n\n for (var key in source) {\n if (Object.prototype.hasOwnProperty.call(source, key)) {\n target[key] = source[key];\n }\n }\n }\n\n return target;\n };\n\n return _extends.apply(this, arguments);\n}\n\nmodule.exports = _extends;","\"use strict\";\n\nexports.__esModule = true;\nexports.onRouteUpdate = void 0;\n\nvar onRouteUpdate = function onRouteUpdate(_ref, pluginOptions) {\n var location = _ref.location;\n\n if (pluginOptions === void 0) {\n pluginOptions = {};\n }\n\n if (process.env.NODE_ENV !== \"production\" || typeof ga !== \"function\") {\n return null;\n }\n\n var pathIsExcluded = location && typeof window.excludeGAPaths !== \"undefined\" && window.excludeGAPaths.some(function (rx) {\n return rx.test(location.pathname);\n });\n if (pathIsExcluded) return null; // wrap inside a timeout to make sure react-helmet is done with it's changes (https://github.com/gatsbyjs/gatsby/issues/9139)\n // reactHelmet is using requestAnimationFrame: https://github.com/nfl/react-helmet/blob/5.2.0/src/HelmetUtils.js#L296-L299\n\n var sendPageView = function sendPageView() {\n var pagePath = location ? location.pathname + location.search + location.hash : undefined;\n window.ga(\"set\", \"page\", pagePath);\n window.ga(\"send\", \"pageview\");\n }; // Minimum delay for reactHelmet's requestAnimationFrame\n\n\n var delay = Math.max(32, pluginOptions.pageTransitionDelay || 0);\n setTimeout(sendPageView, delay);\n return null;\n};\n\nexports.onRouteUpdate = onRouteUpdate;","import React from \"react\"\nimport PropTypes from \"prop-types\"\n\nimport loader from \"./loader\"\nimport InternalPageRenderer from \"./page-renderer\"\n\nconst ProdPageRenderer = ({ location }) => {\n const pageResources = loader.loadPageSync(location.pathname)\n if (!pageResources) {\n return null\n }\n return React.createElement(InternalPageRenderer, {\n location,\n pageResources,\n ...pageResources.json,\n })\n}\n\nProdPageRenderer.propTypes = {\n location: PropTypes.shape({\n pathname: PropTypes.string.isRequired,\n }).isRequired,\n}\n\nexport default ProdPageRenderer\n","const plugins = require(`./api-runner-browser-plugins`)\nconst {\n getResourcesForPathname,\n getResourcesForPathnameSync,\n getResourceURLsForPathname,\n loadPage,\n loadPageSync,\n} = require(`./loader`).publicLoader\n\nexports.apiRunner = (api, args = {}, defaultReturn, argTransform) => {\n // Hooks for gatsby-cypress's API handler\n if (process.env.CYPRESS_SUPPORT) {\n if (window.___apiHandler) {\n window.___apiHandler(api)\n } else if (window.___resolvedAPIs) {\n window.___resolvedAPIs.push(api)\n } else {\n window.___resolvedAPIs = [api]\n }\n }\n\n let results = plugins.map(plugin => {\n if (!plugin.plugin[api]) {\n return undefined\n }\n\n // Deprecated April 2019. Use `loadPageSync` instead\n args.getResourcesForPathnameSync = getResourcesForPathnameSync\n // Deprecated April 2019. Use `loadPage` instead\n args.getResourcesForPathname = getResourcesForPathname\n args.getResourceURLsForPathname = getResourceURLsForPathname\n args.loadPage = loadPage\n args.loadPageSync = loadPageSync\n\n const result = plugin.plugin[api](args, plugin.options)\n if (result && argTransform) {\n args = argTransform({ args, result, plugin })\n }\n return result\n })\n\n // Filter out undefined results.\n results = results.filter(result => typeof result !== `undefined`)\n\n if (results.length > 0) {\n return results\n } else if (defaultReturn) {\n return [defaultReturn]\n } else {\n return []\n }\n}\n\nexports.apiRunnerAsync = (api, args, defaultReturn) =>\n plugins.reduce(\n (previous, next) =>\n next.plugin[api]\n ? previous.then(() => next.plugin[api](args, next.options))\n : previous,\n Promise.resolve()\n )\n"],"sourceRoot":""} \ No newline at end of file diff --git a/cd7d5f864fc9e15ed8adef086269b0aeff617554-d4a2ee6ab7a1817af84e.js 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* Bio component that queries for data\n * with Gatsby's StaticQuery component\n *\n * See: https://www.gatsbyjs.org/docs/static-query/\n */\n\nimport React from 'react'\nimport { StaticQuery, graphql } from 'gatsby'\nimport Image from 'gatsby-image'\n\nimport { rhythm } from '../utils/typography'\n\nfunction Bio() {\n return (\n {\n const { author } = data.site.siteMetadata\n return (\n \n \n

这个博客用于记录我个人所读所思所想，前端开发相关。

\n \n )\n }}\n />\n )\n}\n\nconst bioQuery = graphql`\n query BioQuery {\n avatar: file(absolutePath: { regex: \"/profile-pic.jpg/\" }) {\n childImageSharp {\n fixed(width: 50, height: 50) {\n ...GatsbyImageSharpFixed\n }\n }\n }\n site {\n siteMetadata {\n author\n }\n }\n }\n`\n\nexport default Bio\n","\"use strict\";\n\nvar _interopRequireDefault = require(\"@babel/runtime/helpers/interopRequireDefault\");\n\nexports.__esModule = true;\nexports.default = void 0;\n\nvar _assertThisInitialized2 = _interopRequireDefault(require(\"@babel/runtime/helpers/assertThisInitialized\"));\n\nvar _inheritsLoose2 = _interopRequireDefault(require(\"@babel/runtime/helpers/inheritsLoose\"));\n\nvar _objectWithoutPropertiesLoose2 = _interopRequireDefault(require(\"@babel/runtime/helpers/objectWithoutPropertiesLoose\"));\n\nvar _extends2 = _interopRequireDefault(require(\"@babel/runtime/helpers/extends\"));\n\nvar _react = _interopRequireDefault(require(\"react\"));\n\nvar _propTypes = _interopRequireDefault(require(\"prop-types\"));\n\nvar logDeprecationNotice = function logDeprecationNotice(prop, replacement) {\n if (process.env.NODE_ENV === \"production\") {\n return;\n }\n\n console.log(\"\\n The \\\"\" + prop + \"\\\" prop is now deprecated and will be removed in the next major version\\n of \\\"gatsby-image\\\".\\n \");\n\n if (replacement) {\n console.log(\"Please use \" + replacement + \" instead of \\\"\" + prop + \"\\\".\");\n }\n}; // Handle legacy props during their deprecation phase\n\n\nvar convertProps = function convertProps(props) {\n var convertedProps = (0, _extends2.default)({}, props);\n var resolutions = convertedProps.resolutions,\n sizes = convertedProps.sizes,\n critical = convertedProps.critical;\n\n if (resolutions) {\n convertedProps.fixed = resolutions;\n logDeprecationNotice(\"resolutions\", \"the gatsby-image v2 prop \\\"fixed\\\"\");\n delete convertedProps.resolutions;\n }\n\n if (sizes) {\n convertedProps.fluid = sizes;\n logDeprecationNotice(\"sizes\", \"the gatsby-image v2 prop \\\"fluid\\\"\");\n delete convertedProps.sizes;\n }\n\n if (critical) {\n logDeprecationNotice(\"critical\", \"the native \\\"loading\\\" attribute\");\n convertedProps.loading = \"eager\";\n } // convert fluid & fixed to arrays so we only have to work with arrays\n\n\n if (convertedProps.fluid) {\n convertedProps.fluid = groupByMedia([].concat(convertedProps.fluid));\n }\n\n if (convertedProps.fixed) {\n convertedProps.fixed = groupByMedia([].concat(convertedProps.fixed));\n }\n\n return convertedProps;\n};\n/**\n * Checks if fluid or fixed are art-direction arrays.\n *\n * @param currentData {{media?: string}[]} The props to check for images.\n * @return {boolean}\n */\n\n\nvar hasArtDirectionSupport = function hasArtDirectionSupport(currentData) {\n return !!currentData && Array.isArray(currentData) && currentData.some(function (image) {\n return typeof image.media !== \"undefined\";\n });\n};\n/**\n * Tries to detect if a media query matches the current viewport.\n * @property media {{media?: string}} A media query string.\n * @return {boolean}\n */\n\n\nvar matchesMedia = function matchesMedia(_ref) {\n var media = _ref.media;\n return media ? isBrowser && !!window.matchMedia(media).matches : false;\n};\n/**\n * Find the source of an image to use as a key in the image cache.\n * Use `the first image in either `fixed` or `fluid`\n * @param {{fluid: {src: string, media?: string}[], fixed: {src: string, media?: string}[]}} args\n * @return {string?} Returns image src or undefined it not given.\n */\n\n\nvar getImageCacheKey = function getImageCacheKey(_ref2) {\n var fluid = _ref2.fluid,\n fixed = _ref2.fixed;\n var srcData = getCurrentSrcData(fluid || fixed || []);\n return srcData && srcData.src;\n};\n/**\n * Returns the current src - Preferably with art-direction support.\n * @param currentData {{media?: string}[], maxWidth?: Number, maxHeight?: Number} The fluid or fixed image array.\n * @return {{src: string, media?: string, maxWidth?: Number, maxHeight?: Number}}\n */\n\n\nvar getCurrentSrcData = function getCurrentSrcData(currentData) {\n if (isBrowser && hasArtDirectionSupport(currentData)) {\n // Do we have an image for the current Viewport?\n var foundMedia = currentData.findIndex(matchesMedia);\n\n if (foundMedia !== -1) {\n return currentData[foundMedia];\n } // No media matches, select first element without a media condition\n\n\n var noMedia = currentData.findIndex(function (image) {\n return typeof image.media === \"undefined\";\n });\n\n if (noMedia !== -1) {\n return currentData[noMedia];\n }\n } // Else return the first image.\n\n\n return currentData[0];\n}; // Cache if we've seen an image before so we don't bother with\n// lazy-loading & fading in on subsequent mounts.\n\n\nvar imageCache = Object.create({});\n\nvar inImageCache = function inImageCache(props) {\n var convertedProps = convertProps(props);\n var cacheKey = getImageCacheKey(convertedProps);\n return imageCache[cacheKey] || false;\n};\n\nvar activateCacheForImage = function activateCacheForImage(props) {\n var convertedProps = convertProps(props);\n var cacheKey = getImageCacheKey(convertedProps);\n\n if (cacheKey) {\n imageCache[cacheKey] = true;\n }\n}; // Native lazy-loading support: https://addyosmani.com/blog/lazy-loading/\n\n\nvar hasNativeLazyLoadSupport = typeof HTMLImageElement !== \"undefined\" && \"loading\" in HTMLImageElement.prototype;\nvar isBrowser = typeof window !== \"undefined\";\nvar hasIOSupport = isBrowser && window.IntersectionObserver;\nvar io;\nvar listeners = new WeakMap();\n\nfunction getIO() {\n if (typeof io === \"undefined\" && typeof window !== \"undefined\" && window.IntersectionObserver) {\n io = new window.IntersectionObserver(function (entries) {\n entries.forEach(function (entry) {\n if (listeners.has(entry.target)) {\n var cb = listeners.get(entry.target); // Edge doesn't currently support isIntersecting, so also test for an intersectionRatio > 0\n\n if (entry.isIntersecting || entry.intersectionRatio > 0) {\n io.unobserve(entry.target);\n listeners.delete(entry.target);\n cb();\n }\n }\n });\n }, {\n rootMargin: \"200px\"\n });\n }\n\n return io;\n}\n\nfunction generateImageSources(imageVariants) {\n return imageVariants.map(function (_ref3) {\n var src = _ref3.src,\n srcSet = _ref3.srcSet,\n srcSetWebp = _ref3.srcSetWebp,\n media = _ref3.media,\n sizes = _ref3.sizes;\n return /*#__PURE__*/_react.default.createElement(_react.default.Fragment, {\n key: src\n }, srcSetWebp && /*#__PURE__*/_react.default.createElement(\"source\", {\n type: \"image/webp\",\n media: media,\n srcSet: srcSetWebp,\n sizes: sizes\n }), srcSet && /*#__PURE__*/_react.default.createElement(\"source\", {\n media: media,\n srcSet: srcSet,\n sizes: sizes\n }));\n });\n} // Return an array ordered by elements having a media prop, does not use\n// native sort, as a stable sort is not guaranteed by all browsers/versions\n\n\nfunction groupByMedia(imageVariants) {\n var withMedia = [];\n var without = [];\n imageVariants.forEach(function (variant) {\n return (variant.media ? withMedia : without).push(variant);\n });\n\n if (without.length > 1 && process.env.NODE_ENV !== \"production\") {\n console.warn(\"We've found \" + without.length + \" sources without a media property. They might be ignored by the browser, see: https://www.gatsbyjs.org/packages/gatsby-image/#art-directing-multiple-images\");\n }\n\n return [].concat(withMedia, without);\n}\n\nfunction generateTracedSVGSources(imageVariants) {\n return imageVariants.map(function (_ref4) {\n var src = _ref4.src,\n media = _ref4.media,\n tracedSVG = _ref4.tracedSVG;\n return /*#__PURE__*/_react.default.createElement(\"source\", {\n key: src,\n media: media,\n srcSet: tracedSVG\n });\n });\n}\n\nfunction generateBase64Sources(imageVariants) {\n return imageVariants.map(function (_ref5) {\n var src = _ref5.src,\n media = _ref5.media,\n base64 = _ref5.base64;\n return /*#__PURE__*/_react.default.createElement(\"source\", {\n key: src,\n media: media,\n srcSet: base64\n });\n });\n}\n\nfunction generateNoscriptSource(_ref6, isWebp) {\n var srcSet = _ref6.srcSet,\n srcSetWebp = _ref6.srcSetWebp,\n media = _ref6.media,\n sizes = _ref6.sizes;\n var src = isWebp ? srcSetWebp : srcSet;\n var mediaAttr = media ? \"media=\\\"\" + media + \"\\\" \" : \"\";\n var typeAttr = isWebp ? \"type='image/webp' \" : \"\";\n var sizesAttr = sizes ? \"sizes=\\\"\" + sizes + \"\\\" \" : \"\";\n return \"\";\n}\n\nfunction generateNoscriptSources(imageVariants) {\n return imageVariants.map(function (variant) {\n return (variant.srcSetWebp ? generateNoscriptSource(variant, true) : \"\") + generateNoscriptSource(variant);\n }).join(\"\");\n}\n\nvar listenToIntersections = function listenToIntersections(el, cb) {\n var observer = getIO();\n\n if (observer) {\n observer.observe(el);\n listeners.set(el, cb);\n }\n\n return function () {\n observer.unobserve(el);\n listeners.delete(el);\n };\n};\n\nvar noscriptImg = function noscriptImg(props) {\n // Check if prop exists before adding each attribute to the string output below to prevent\n // HTML validation issues caused by empty values like width=\"\" and height=\"\"\n var src = props.src ? \"src=\\\"\" + props.src + \"\\\" \" : \"src=\\\"\\\" \"; // required attribute\n\n var sizes = props.sizes ? \"sizes=\\\"\" + props.sizes + \"\\\" \" : \"\";\n var srcSet = props.srcSet ? \"srcset=\\\"\" + props.srcSet + \"\\\" \" : \"\";\n var title = props.title ? \"title=\\\"\" + props.title + \"\\\" \" : \"\";\n var alt = props.alt ? \"alt=\\\"\" + props.alt + \"\\\" \" : \"alt=\\\"\\\" \"; // required attribute\n\n var width = props.width ? \"width=\\\"\" + props.width + \"\\\" \" : \"\";\n var height = props.height ? \"height=\\\"\" + props.height + \"\\\" \" : \"\";\n var crossOrigin = props.crossOrigin ? \"crossorigin=\\\"\" + props.crossOrigin + \"\\\" \" : \"\";\n var loading = props.loading ? \"loading=\\\"\" + props.loading + \"\\\" \" : \"\";\n var draggable = props.draggable ? \"draggable=\\\"\" + props.draggable + \"\\\" \" : \"\";\n var sources = generateNoscriptSources(props.imageVariants);\n return \"\";\n}; // Earlier versions of gatsby-image during the 2.x cycle did not wrap\n// the `Img` component in a `picture` element. This maintains compatibility\n// until a breaking change can be introduced in the next major release\n\n\nvar Placeholder = /*#__PURE__*/_react.default.forwardRef(function (props, ref) {\n var src = props.src,\n imageVariants = props.imageVariants,\n generateSources = props.generateSources,\n spreadProps = props.spreadProps,\n ariaHidden = props.ariaHidden;\n\n var baseImage = /*#__PURE__*/_react.default.createElement(Img, (0, _extends2.default)({\n ref: ref,\n src: src\n }, spreadProps, {\n ariaHidden: ariaHidden\n }));\n\n return imageVariants.length > 1 ? /*#__PURE__*/_react.default.createElement(\"picture\", null, generateSources(imageVariants), baseImage) : baseImage;\n});\n\nvar Img = /*#__PURE__*/_react.default.forwardRef(function (props, ref) {\n var sizes = props.sizes,\n srcSet = props.srcSet,\n src = props.src,\n style = props.style,\n onLoad = props.onLoad,\n onError = props.onError,\n loading = props.loading,\n draggable = props.draggable,\n ariaHidden = props.ariaHidden,\n otherProps = (0, _objectWithoutPropertiesLoose2.default)(props, [\"sizes\", \"srcSet\", \"src\", \"style\", \"onLoad\", \"onError\", \"loading\", \"draggable\", \"ariaHidden\"]);\n return /*#__PURE__*/_react.default.createElement(\"img\", (0, _extends2.default)({\n \"aria-hidden\": ariaHidden,\n sizes: sizes,\n srcSet: srcSet,\n src: src\n }, otherProps, {\n onLoad: onLoad,\n onError: onError,\n ref: ref,\n loading: loading,\n draggable: draggable,\n style: (0, _extends2.default)({\n position: \"absolute\",\n top: 0,\n left: 0,\n width: \"100%\",\n height: \"100%\",\n objectFit: \"cover\",\n objectPosition: \"center\"\n }, style)\n }));\n});\n\nImg.propTypes = {\n style: _propTypes.default.object,\n onError: _propTypes.default.func,\n onLoad: _propTypes.default.func\n};\n\nvar Image = /*#__PURE__*/function (_React$Component) {\n (0, _inheritsLoose2.default)(Image, _React$Component);\n\n function Image(props) {\n var _this;\n\n _this = _React$Component.call(this, props) || this; // If this image has already been loaded before then we can assume it's\n // already in the browser cache so it's cheap to just show directly.\n\n _this.seenBefore = isBrowser && inImageCache(props);\n _this.isCritical = props.loading === \"eager\" || props.critical;\n _this.addNoScript = !(_this.isCritical && !props.fadeIn);\n _this.useIOSupport = !hasNativeLazyLoadSupport && hasIOSupport && !_this.isCritical && !_this.seenBefore;\n var isVisible = _this.isCritical || isBrowser && (hasNativeLazyLoadSupport || !_this.useIOSupport);\n _this.state = {\n isVisible: isVisible,\n imgLoaded: false,\n imgCached: false,\n fadeIn: !_this.seenBefore && props.fadeIn\n };\n _this.imageRef = /*#__PURE__*/_react.default.createRef();\n _this.placeholderRef = props.placeholderRef || /*#__PURE__*/_react.default.createRef();\n _this.handleImageLoaded = _this.handleImageLoaded.bind((0, _assertThisInitialized2.default)(_this));\n _this.handleRef = _this.handleRef.bind((0, _assertThisInitialized2.default)(_this));\n return _this;\n }\n\n var _proto = Image.prototype;\n\n _proto.componentDidMount = function componentDidMount() {\n if (this.state.isVisible && typeof this.props.onStartLoad === \"function\") {\n this.props.onStartLoad({\n wasCached: inImageCache(this.props)\n });\n }\n\n if (this.isCritical) {\n var img = this.imageRef.current;\n\n if (img && img.complete) {\n this.handleImageLoaded();\n }\n }\n };\n\n _proto.componentWillUnmount = function componentWillUnmount() {\n if (this.cleanUpListeners) {\n this.cleanUpListeners();\n }\n } // Specific to IntersectionObserver based lazy-load support\n ;\n\n _proto.handleRef = function handleRef(ref) {\n var _this2 = this;\n\n if (this.useIOSupport && ref) {\n this.cleanUpListeners = listenToIntersections(ref, function () {\n var imageInCache = inImageCache(_this2.props);\n\n if (!_this2.state.isVisible && typeof _this2.props.onStartLoad === \"function\") {\n _this2.props.onStartLoad({\n wasCached: imageInCache\n });\n } // imgCached and imgLoaded must update after isVisible,\n // Once isVisible is true, imageRef becomes accessible, which imgCached needs access to.\n // imgLoaded and imgCached are in a 2nd setState call to be changed together,\n // avoiding initiating unnecessary animation frames from style changes.\n\n\n _this2.setState({\n isVisible: true\n }, function () {\n _this2.setState({\n imgLoaded: imageInCache,\n // `currentSrc` should be a string, but can be `undefined` in IE,\n // !! operator validates the value is not undefined/null/\"\"\n // for lazyloaded components this might be null\n // TODO fix imgCached behaviour as it's now false when it's lazyloaded\n imgCached: !!(_this2.imageRef.current && _this2.imageRef.current.currentSrc)\n });\n });\n });\n }\n };\n\n _proto.handleImageLoaded = function handleImageLoaded() {\n activateCacheForImage(this.props);\n this.setState({\n imgLoaded: true\n });\n\n if (this.props.onLoad) {\n this.props.onLoad();\n }\n };\n\n _proto.render = function render() {\n var _convertProps = convertProps(this.props),\n title = _convertProps.title,\n alt = _convertProps.alt,\n className = _convertProps.className,\n _convertProps$style = _convertProps.style,\n style = _convertProps$style === void 0 ? {} : _convertProps$style,\n _convertProps$imgStyl = _convertProps.imgStyle,\n imgStyle = _convertProps$imgStyl === void 0 ? {} : _convertProps$imgStyl,\n _convertProps$placeho = _convertProps.placeholderStyle,\n placeholderStyle = _convertProps$placeho === void 0 ? {} : _convertProps$placeho,\n placeholderClassName = _convertProps.placeholderClassName,\n fluid = _convertProps.fluid,\n fixed = _convertProps.fixed,\n backgroundColor = _convertProps.backgroundColor,\n durationFadeIn = _convertProps.durationFadeIn,\n Tag = _convertProps.Tag,\n itemProp = _convertProps.itemProp,\n loading = _convertProps.loading,\n draggable = _convertProps.draggable;\n\n var shouldReveal = this.state.fadeIn === false || this.state.imgLoaded;\n var shouldFadeIn = this.state.fadeIn === true && !this.state.imgCached;\n var imageStyle = (0, _extends2.default)({\n opacity: shouldReveal ? 1 : 0,\n transition: shouldFadeIn ? \"opacity \" + durationFadeIn + \"ms\" : \"none\"\n }, imgStyle);\n var bgColor = typeof backgroundColor === \"boolean\" ? \"lightgray\" : backgroundColor;\n var delayHideStyle = {\n transitionDelay: durationFadeIn + \"ms\"\n };\n var imagePlaceholderStyle = (0, _extends2.default)({\n opacity: this.state.imgLoaded ? 0 : 1\n }, shouldFadeIn && delayHideStyle, imgStyle, placeholderStyle);\n var placeholderImageProps = {\n title: title,\n alt: !this.state.isVisible ? alt : \"\",\n style: imagePlaceholderStyle,\n className: placeholderClassName,\n itemProp: itemProp\n };\n\n if (fluid) {\n var imageVariants = fluid;\n var image = getCurrentSrcData(fluid);\n return /*#__PURE__*/_react.default.createElement(Tag, {\n className: (className ? className : \"\") + \" gatsby-image-wrapper\",\n style: (0, _extends2.default)({\n position: \"relative\",\n overflow: \"hidden\",\n maxWidth: image.maxWidth ? image.maxWidth + \"px\" : null,\n maxHeight: image.maxHeight ? image.maxHeight + \"px\" : null\n }, style),\n ref: this.handleRef,\n key: \"fluid-\" + JSON.stringify(image.srcSet)\n }, /*#__PURE__*/_react.default.createElement(Tag, {\n \"aria-hidden\": true,\n style: {\n width: \"100%\",\n paddingBottom: 100 / image.aspectRatio + \"%\"\n }\n }), bgColor && /*#__PURE__*/_react.default.createElement(Tag, {\n \"aria-hidden\": true,\n title: title,\n style: (0, _extends2.default)({\n backgroundColor: bgColor,\n position: \"absolute\",\n top: 0,\n bottom: 0,\n opacity: !this.state.imgLoaded ? 1 : 0,\n right: 0,\n left: 0\n }, shouldFadeIn && delayHideStyle)\n }), image.base64 && /*#__PURE__*/_react.default.createElement(Placeholder, {\n ariaHidden: true,\n ref: this.placeholderRef,\n src: image.base64,\n spreadProps: placeholderImageProps,\n imageVariants: imageVariants,\n generateSources: generateBase64Sources\n }), image.tracedSVG && /*#__PURE__*/_react.default.createElement(Placeholder, {\n ariaHidden: true,\n ref: this.placeholderRef,\n src: image.tracedSVG,\n spreadProps: placeholderImageProps,\n imageVariants: imageVariants,\n generateSources: generateTracedSVGSources\n }), this.state.isVisible && /*#__PURE__*/_react.default.createElement(\"picture\", null, generateImageSources(imageVariants), /*#__PURE__*/_react.default.createElement(Img, {\n alt: alt,\n title: title,\n sizes: image.sizes,\n src: image.src,\n crossOrigin: this.props.crossOrigin,\n srcSet: image.srcSet,\n style: imageStyle,\n ref: this.imageRef,\n onLoad: this.handleImageLoaded,\n onError: this.props.onError,\n itemProp: itemProp,\n loading: loading,\n draggable: draggable\n })), this.addNoScript && /*#__PURE__*/_react.default.createElement(\"noscript\", {\n dangerouslySetInnerHTML: {\n __html: noscriptImg((0, _extends2.default)({\n alt: alt,\n title: title,\n loading: loading\n }, image, {\n imageVariants: imageVariants\n }))\n }\n }));\n }\n\n if (fixed) {\n var _imageVariants = fixed;\n\n var _image = getCurrentSrcData(fixed);\n\n var divStyle = (0, _extends2.default)({\n position: \"relative\",\n overflow: \"hidden\",\n display: \"inline-block\",\n width: _image.width,\n height: _image.height\n }, style);\n\n if (style.display === \"inherit\") {\n delete divStyle.display;\n }\n\n return /*#__PURE__*/_react.default.createElement(Tag, {\n className: (className ? className : \"\") + \" gatsby-image-wrapper\",\n style: divStyle,\n ref: this.handleRef,\n key: \"fixed-\" + JSON.stringify(_image.srcSet)\n }, bgColor && /*#__PURE__*/_react.default.createElement(Tag, {\n \"aria-hidden\": true,\n title: title,\n style: (0, _extends2.default)({\n backgroundColor: bgColor,\n width: _image.width,\n opacity: !this.state.imgLoaded ? 1 : 0,\n height: _image.height\n }, shouldFadeIn && delayHideStyle)\n }), _image.base64 && /*#__PURE__*/_react.default.createElement(Placeholder, {\n ariaHidden: true,\n ref: this.placeholderRef,\n src: _image.base64,\n spreadProps: placeholderImageProps,\n imageVariants: _imageVariants,\n generateSources: generateBase64Sources\n }), _image.tracedSVG && /*#__PURE__*/_react.default.createElement(Placeholder, {\n ariaHidden: true,\n ref: this.placeholderRef,\n src: _image.tracedSVG,\n spreadProps: placeholderImageProps,\n imageVariants: _imageVariants,\n generateSources: generateTracedSVGSources\n }), this.state.isVisible && /*#__PURE__*/_react.default.createElement(\"picture\", null, generateImageSources(_imageVariants), /*#__PURE__*/_react.default.createElement(Img, {\n alt: alt,\n title: title,\n width: _image.width,\n height: _image.height,\n sizes: _image.sizes,\n src: _image.src,\n crossOrigin: this.props.crossOrigin,\n srcSet: _image.srcSet,\n style: imageStyle,\n ref: this.imageRef,\n onLoad: this.handleImageLoaded,\n onError: this.props.onError,\n itemProp: itemProp,\n loading: loading,\n draggable: draggable\n })), this.addNoScript && /*#__PURE__*/_react.default.createElement(\"noscript\", {\n dangerouslySetInnerHTML: {\n __html: noscriptImg((0, _extends2.default)({\n alt: alt,\n title: title,\n loading: loading\n }, _image, {\n imageVariants: _imageVariants\n }))\n }\n }));\n }\n\n return null;\n };\n\n return Image;\n}(_react.default.Component);\n\nImage.defaultProps = {\n fadeIn: true,\n durationFadeIn: 500,\n alt: \"\",\n Tag: \"div\",\n // We set it to `lazy` by default because it's best to default to a performant\n // setting and let the user \"opt out\" to `eager`\n loading: \"lazy\"\n};\n\nvar fixedObject = _propTypes.default.shape({\n width: _propTypes.default.number.isRequired,\n height: _propTypes.default.number.isRequired,\n src: _propTypes.default.string.isRequired,\n srcSet: _propTypes.default.string.isRequired,\n base64: _propTypes.default.string,\n tracedSVG: _propTypes.default.string,\n srcWebp: _propTypes.default.string,\n srcSetWebp: _propTypes.default.string,\n media: _propTypes.default.string\n});\n\nvar fluidObject = _propTypes.default.shape({\n aspectRatio: _propTypes.default.number.isRequired,\n src: _propTypes.default.string.isRequired,\n srcSet: _propTypes.default.string.isRequired,\n sizes: _propTypes.default.string.isRequired,\n base64: _propTypes.default.string,\n tracedSVG: _propTypes.default.string,\n srcWebp: _propTypes.default.string,\n srcSetWebp: _propTypes.default.string,\n media: _propTypes.default.string,\n maxWidth: _propTypes.default.number,\n maxHeight: _propTypes.default.number\n});\n\nfunction requireFixedOrFluid(originalPropTypes) {\n return function (props, propName, componentName) {\n var _PropTypes$checkPropT;\n\n if (!props.fixed && !props.fluid) {\n throw new Error(\"The prop `fluid` or `fixed` is marked as required in `\" + componentName + \"`, but their values are both `undefined`.\");\n }\n\n _propTypes.default.checkPropTypes((_PropTypes$checkPropT = {}, _PropTypes$checkPropT[propName] = originalPropTypes, _PropTypes$checkPropT), props, \"prop\", componentName);\n };\n} // If you modify these propTypes, please don't forget to update following files as well:\n// https://github.com/gatsbyjs/gatsby/blob/master/packages/gatsby-image/index.d.ts\n// https://github.com/gatsbyjs/gatsby/blob/master/packages/gatsby-image/README.md#gatsby-image-props\n// https://github.com/gatsbyjs/gatsby/blob/master/docs/docs/gatsby-image.md#gatsby-image-props\n\n\nImage.propTypes = {\n resolutions: fixedObject,\n sizes: fluidObject,\n fixed: requireFixedOrFluid(_propTypes.default.oneOfType([fixedObject, _propTypes.default.arrayOf(fixedObject)])),\n fluid: requireFixedOrFluid(_propTypes.default.oneOfType([fluidObject, _propTypes.default.arrayOf(fluidObject)])),\n fadeIn: _propTypes.default.bool,\n durationFadeIn: _propTypes.default.number,\n title: _propTypes.default.string,\n alt: _propTypes.default.string,\n className: _propTypes.default.oneOfType([_propTypes.default.string, _propTypes.default.object]),\n // Support Glamor's css prop.\n critical: _propTypes.default.bool,\n crossOrigin: _propTypes.default.oneOfType([_propTypes.default.string, _propTypes.default.bool]),\n style: _propTypes.default.object,\n imgStyle: _propTypes.default.object,\n placeholderStyle: _propTypes.default.object,\n placeholderClassName: _propTypes.default.string,\n backgroundColor: _propTypes.default.oneOfType([_propTypes.default.string, _propTypes.default.bool]),\n onLoad: _propTypes.default.func,\n onError: _propTypes.default.func,\n onStartLoad: _propTypes.default.func,\n Tag: _propTypes.default.string,\n itemProp: _propTypes.default.string,\n loading: _propTypes.default.oneOf([\"auto\", \"lazy\", \"eager\"]),\n draggable: _propTypes.default.bool\n};\nvar _default = Image;\nexports.default = _default;","export function formatReadingTime(minutes) {\n let cups = Math.round(minutes / 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You just hit a route that doesn't exist... the sadness.

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\n {posts.map(({ node }) => {\n const title = node.frontmatter.title || node.fields.slug\n return (\n

\n \n \n {title}\n \n \n \n {node.frontmatter.date}\n {` • ${formatReadingTime(node.timeToRead)}`}\n \n

\n \n

\n )\n })}\n

\n \n \n )\n }\n}\n\nexport default BlogPostTemplate\n\nexport const pageQuery = graphql`\n query BlogPostBySlug($slug: String!) {\n site {\n siteMetadata {\n title\n author\n }\n }\n markdownRemark(fields: { slug: { eq: $slug } }) {\n id\n html\n timeToRead\n excerpt(pruneLength: 160)\n frontmatter {\n title\n date(formatString: \"MMMM DD, YYYY\")\n description\n }\n fields {\n slug\n }\n }\n }\n`\n"],"sourceRoot":""} \ No newline at end of file diff --git a/conditional-rendering-in-react/index.html b/conditional-rendering-in-react/index.html new file mode 100644 index 0000000..b778fd6 --- /dev/null +++ b/conditional-rendering-in-react/index.html @@ -0,0 +1,115 @@ +React 中的条件渲染 | Cube Blog

Cube Blog

React 中的条件渲染

November 06, 2019 • ☕️ 2 min read

什么是 React 中的条件渲染？

一个组件根据一个或多个条件决定其要返回（渲染）的元素。

if Else

function List({ list }) {
+  if (!list) {
+    return null
+  }
+
+  if (!list.length) {
+    return <p>Sorry, the list is empty.</p>
+  } else {
+    return (
+      <div>
+        {list.map(item => <ListItem item={item} />)}
+      </div>
+    )
+  }
+}

可以使用 if 表达式在渲染中提前 return。

三目运算符（Ternary Operation）

condition ? expr1 : expr2

function Item({ item, mode }) {
+  const isEditable = mode === 'EDIT'
+
+  return (
+    <div>
+      {isEditable ? (
+        <ItemEdit item={item} />
+      ) : (
+        <ItemView item={item} />
+      )}
+    </div>
+  )
+}

使用三目运算符比 if-else 表达式更加简洁明了。

逻辑与（&&）运算符

当我们想要根据条件决定是否渲染一个元素时，逻辑与运算符使得那些返回 null 的逻辑书写更加简洁。

在 JavaScript 中，true && 'Hello World' 相当于 'Hello World'；false && 'Hello World' 相当于 false。也即，当条件表达式为真，逻辑与&& 后面的操作符会成为输出；当条件表达式为假，React 则会忽略并跳过该表达式。

function LoadingIndicator({ isLoading }) {
+  return (
+    <div>
+      { isLoading && <p>Loading...</p> }
+    </div>
+  )
+}

Switch Case 操作符

适用于有多个条件渲染时。

function Notification({ text, state }) {
+  switch(state) {
+    case 'info':
+      return <Info text={text} />
+    case 'warning':
+      return ...
+    case 'error':
+      return ...
+    default:
+      return null

不推荐这种方式，用下面的枚举的方式替代。

枚举（enums）

const getSpecificNotification = (text) => ({
+  info: <Info text={text} />,
+  warning: <Warning text={text} />,
+  error: <Error text={text} />,
+});
+function Notification({ state, text }) {
+  return (
+    <div>
+      {getSpecificNotification(text)[state]}
+    </div>
+  );
+}
+
+function FooBarOrFooOrBar({ isFoo, isBar }) {
+  const key = `${isFoo}-${isBar}`;
+  return (
+    <div>
+      {{
+        ['true-true']: <FooBar />,
+        ['true-false']: <Foo />,
+        ['false-true']: <Bar />,
+        ['false-false']: null,
+      }[key]}
+    </div>
+  );
+}
+
+FooBarOrFooOrBar.propTypes = {
+  isFoo: React.PropTypes.boolean.isRequired,
+  isBar: React.PropTypes.boolean.isRequired,
+}

嵌套条件渲染

尽量避免

可以使用之前的几种方式，但最好是将其拆分成几个更小的自己根据条件渲染的组件。

高阶组件（HOC）

// HOC declaration
+function withLoadingIndicator(Component) {
+  return function EnhancedComponent({ isLoading, ...props }) {
+    if (!isLoading) {
+      return <Component { ...props } />;
+    }
+    return <div><p>Loading...</p></div>;
+  };
+}
+// Usage
+const ListWithLoadingIndicator = withLoadingIndicator(List);
+<ListWithLoadingIndicator
+  isLoading={props.isLoading}
+  list={props.list}
+/>

参考

All React Conditional Rendering Techniques - RWieruch

这个博客用于记录我个人所读所思所想，前端开发相关。

\ No newline at end of file diff --git a/content/assets/gatsby-icon.png b/content/assets/gatsby-icon.png deleted file mode 100644 index 908bc78..0000000 Binary files a/content/assets/gatsby-icon.png and /dev/null differ diff --git a/content/assets/profile-pic.jpg b/content/assets/profile-pic.jpg deleted file mode 100644 index ac18e71..0000000 Binary files a/content/assets/profile-pic.jpg and /dev/null differ diff --git a/content/blog/hello-world/index.md b/content/blog/hello-world/index.md deleted file mode 100644 index 2d488dd..0000000 --- a/content/blog/hello-world/index.md +++ /dev/null @@ -1,21 +0,0 @@ ---- -title: Hello World -date: "2015-05-01T22:12:03.284Z" ---- - -This is my first post on my new fake blog! How exciting! - -I'm sure I'll write a lot more interesting things in the future. - -Oh, and here's a great quote from this Wikipedia on -[salted duck eggs](http://en.wikipedia.org/wiki/Salted_duck_egg). - -> A salted duck egg is a Chinese preserved food product made by soaking duck -> eggs in brine, or packing each egg in damp, salted charcoal. In Asian -> supermarkets, these eggs are sometimes sold covered in a thick layer of salted -> charcoal paste. The eggs may also be sold with the salted paste removed, -> wrapped in plastic, and vacuum packed. From the salt curing process, the -> salted duck eggs have a briny aroma, a gelatin-like egg white and a -> firm-textured, round yolk that is bright orange-red in color. - -![Chinese Salty Egg](./salty_egg.jpg) diff --git a/content/blog/hello-world/salty_egg.jpg b/content/blog/hello-world/salty_egg.jpg deleted file mode 100644 index 653fe7e..0000000 Binary files a/content/blog/hello-world/salty_egg.jpg and /dev/null differ diff --git a/content/blog/hi-folks/index.md b/content/blog/hi-folks/index.md deleted file mode 100644 index 39125ab..0000000 --- a/content/blog/hi-folks/index.md +++ /dev/null @@ -1,108 +0,0 @@ ---- -title: New Beginnings -date: "2015-05-28T22:40:32.169Z" -description: This is a custom description for SEO and Open Graph purposes, rather than the default generated excerpt. Simply add a description field to the frontmatter. ---- - -Far far away, behind the word mountains, far from the countries Vokalia and -Consonantia, there live the blind texts. Separated they live in Bookmarksgrove -right at the coast of the Semantics, a large language ocean. A small river named -Duden flows by their place and supplies it with the necessary regelialia. - -## On deer horse aboard tritely yikes and much - -The Big Oxmox advised her not to do so, because there were thousands of bad -Commas, wild Question Marks and devious Semikoli, but the Little Blind Text -didn’t listen. She packed her seven versalia, put her initial into the belt and -made herself on the way. - -- This however showed weasel -- Well uncritical so misled - - this is very interesting -- Goodness much until that fluid owl - -When she reached the first hills of the **Italic Mountains**, she had a last -view back on the skyline of her hometown _Bookmarksgrove_, the headline of -[Alphabet Village](http://google.com) and the subline of her own road, the Line -Lane. Pityful a rethoric question ran over her cheek, then she continued her -way. On her way she met a copy. - -### Overlaid the jeepers uselessly much excluding - -But nothing the copy said could convince her and so it didn’t take long until a -few insidious Copy Writers ambushed her, made her drunk with -[Longe and Parole](http://google.com) and dragged her into their agency, where -they abused her for their projects again and again. And if she hasn’t been -rewritten, then they are still using her. - -> Far far away, behind the word mountains, far from the countries Vokalia and -> Consonantia, there live the blind texts. Separated they live in Bookmarksgrove -> right at the coast of the Semantics, a large language ocean. - -It is a paradisematic country, in which roasted parts of sentences fly into your -mouth. Even the all-powerful Pointing has no control about the blind texts it is -an almost unorthographic life One day however a small line of blind text by the -name of Lorem Ipsum decided to leave for the far World of Grammar. - -### According a funnily until pre-set or arrogant well cheerful - -The Big Oxmox advised her not to do so, because there were thousands of bad -Commas, wild Question Marks and devious Semikoli, but the Little Blind Text -didn’t listen. She packed her seven versalia, put her initial into the belt and -made herself on the way. - -1. So baboon this -2. Mounted militant weasel gregariously admonishingly straightly hey -3. Dear foresaw hungry and much some overhung -4. Rash opossum less because less some amid besides yikes jeepers frenetic - impassive fruitlessly shut - -When she reached the first hills of the Italic Mountains, she had a last view -back on the skyline of her hometown Bookmarksgrove, the headline of Alphabet -Village and the subline of her own road, the Line Lane. Pityful a rethoric -question ran over her cheek, then she continued her way. On her way she met a -copy. - -> The copy warned the Little Blind Text, that where it came from it would have -> been rewritten a thousand times and everything that was left from its origin -> would be the word "and" and the Little Blind Text should turn around and -> return to its own, safe country. - -But nothing the copy said could convince her and so it didn’t take long until a -few insidious Copy Writers ambushed her, made her drunk with Longe and Parole -and dragged her into their agency, where they abused her for their projects -again and again. And if she hasn’t been rewritten, then they are still using -her. Far far away, behind the word mountains, far from the countries Vokalia and -Consonantia, there live the blind texts. - -#### Silent delightfully including because before one up barring chameleon - -Separated they live in Bookmarksgrove right at the coast of the Semantics, a -large language ocean. A small river named Duden flows by their place and -supplies it with the necessary regelialia. It is a paradisematic country, in -which roasted parts of sentences fly into your mouth. - -Even the all-powerful Pointing has no control about the blind texts it is an -almost unorthographic life One day however a small line of blind text by the -name of Lorem Ipsum decided to leave for the far World of Grammar. The Big Oxmox -advised her not to do so, because there were thousands of bad Commas, wild -Question Marks and devious Semikoli, but the Little Blind Text didn’t listen. - -##### Wherever far wow thus a squirrel raccoon jeez jaguar this from along - -She packed her seven versalia, put her initial into the belt and made herself on -the way. When she reached the first hills of the Italic Mountains, she had a -last view back on the skyline of her hometown Bookmarksgrove, the headline of -Alphabet Village and the subline of her own road, the Line Lane. Pityful a -rethoric question ran over her cheek, then she continued her way. On her way she -met a copy. - -###### Slapped cozy a that lightheartedly and far - -The copy warned the Little Blind Text, that where it came from it would have -been rewritten a thousand times and everything that was left from its origin -would be the word "and" and the Little Blind Text should turn around and return -to its own, safe country. But nothing the copy said could convince her and so it -didn’t take long until a few insidious Copy Writers ambushed her, made her drunk -with Longe and Parole and dragged her into their agency, where they abused her -for their projects again and again. diff --git a/content/blog/my-second-post/index.md b/content/blog/my-second-post/index.md deleted file mode 100644 index d19e92d..0000000 --- a/content/blog/my-second-post/index.md +++ /dev/null @@ -1,13 +0,0 @@ ---- -title: My Second Post! -date: "2015-05-06T23:46:37.121Z" ---- - -Wow! I love blogging so much already. - -Did you know that "despite its name, salted duck eggs can also be made from -chicken eggs, though the taste and texture will be somewhat different, and the -egg yolk will be less rich."? -([Wikipedia Link](http://en.wikipedia.org/wiki/Salted_duck_egg)) - -Yeah, I didn't either. diff --git a/d5d7a013bc6c1e2b6d7db819052c16d7efea5559-9770fc2d1999a3bce1e3.js b/d5d7a013bc6c1e2b6d7db819052c16d7efea5559-9770fc2d1999a3bce1e3.js new file mode 100644 index 0000000..fef2d5d --- /dev/null +++ b/d5d7a013bc6c1e2b6d7db819052c16d7efea5559-9770fc2d1999a3bce1e3.js @@ -0,0 +1,2 @@ +(window.webpackJsonp=window.webpackJsonp||[]).push([[1],{"8+s/":function(t,e,n){"use strict";function r(t){return t&&"object"==typeof t&&"default"in t?t.default:t}var o=n("q1tI"),i=r(o),a=r(n("Gytx"));function u(t,e,n){return e in t?Object.defineProperty(t,e,{value:n,enumerable:!0,configurable:!0,writable:!0}):t[e]=n,t}var c=!("undefined"==typeof window||!window.document||!window.document.createElement);t.exports=function(t,e,n){if("function"!=typeof t)throw new Error("Expected reducePropsToState to be a function.");if("function"!=typeof e)throw new Error("Expected handleStateChangeOnClient to be a function.");if(void 0!==n&&"function"!=typeof n)throw new Error("Expected mapStateOnServer to either be undefined or a function.");return function(r){if("function"!=typeof r)throw new Error("Expected WrappedComponent to be a React component.");var l,s=[];function f(){l=t(s.map((function(t){return t.props}))),p.canUseDOM?e(l):n&&(l=n(l))}var p=function(t){var e,n;function o(){return t.apply(this,arguments)||this}n=t,(e=o).prototype=Object.create(n.prototype),e.prototype.constructor=e,e.__proto__=n,o.peek=function(){return l},o.rewind=function(){if(o.canUseDOM)throw new Error("You may only call rewind() on the server. 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strict';\n\nfunction _interopDefault(ex) {\n return ex && typeof ex === 'object' && 'default' in ex ? ex['default'] : ex;\n}\n\nvar React = require('react');\n\nvar React__default = _interopDefault(React);\n\nvar shallowEqual = _interopDefault(require('shallowequal'));\n\nfunction _defineProperty(obj, key, value) {\n if (key in obj) {\n Object.defineProperty(obj, key, {\n value: value,\n enumerable: true,\n configurable: true,\n writable: true\n });\n } else {\n obj[key] = value;\n }\n\n return obj;\n}\n\nfunction _inheritsLoose(subClass, superClass) {\n subClass.prototype = Object.create(superClass.prototype);\n subClass.prototype.constructor = subClass;\n subClass.__proto__ = superClass;\n}\n\nvar canUseDOM = !!(typeof window !== 'undefined' && window.document && window.document.createElement);\n\nfunction withSideEffect(reducePropsToState, handleStateChangeOnClient, mapStateOnServer) {\n if (typeof reducePropsToState !== 'function') {\n throw new Error('Expected reducePropsToState to be a function.');\n }\n\n if (typeof handleStateChangeOnClient !== 'function') {\n throw new Error('Expected handleStateChangeOnClient to be a function.');\n }\n\n if (typeof mapStateOnServer !== 'undefined' && typeof mapStateOnServer !== 'function') {\n throw new Error('Expected mapStateOnServer to either be undefined or a function.');\n }\n\n function getDisplayName(WrappedComponent) {\n return WrappedComponent.displayName || WrappedComponent.name || 'Component';\n }\n\n return function wrap(WrappedComponent) {\n if (typeof WrappedComponent !== 'function') {\n throw new Error('Expected WrappedComponent to be a React component.');\n }\n\n var mountedInstances = [];\n var state;\n\n function emitChange() {\n state = reducePropsToState(mountedInstances.map(function (instance) {\n return instance.props;\n }));\n\n if (SideEffect.canUseDOM) {\n handleStateChangeOnClient(state);\n } else if (mapStateOnServer) {\n state = mapStateOnServer(state);\n }\n }\n\n var SideEffect = /*#__PURE__*/function (_Component) {\n _inheritsLoose(SideEffect, _Component);\n\n function SideEffect() {\n return _Component.apply(this, arguments) || this;\n } // Try to use displayName of wrapped component\n // Expose canUseDOM so tests can monkeypatch it\n\n\n SideEffect.peek = function peek() {\n return state;\n };\n\n SideEffect.rewind = function rewind() {\n if (SideEffect.canUseDOM) {\n throw new Error('You may only call rewind() on the server. Call peek() to read the current state.');\n }\n\n var recordedState = state;\n state = undefined;\n mountedInstances = [];\n return recordedState;\n };\n\n var _proto = SideEffect.prototype;\n\n _proto.shouldComponentUpdate = function shouldComponentUpdate(nextProps) {\n return !shallowEqual(nextProps, this.props);\n };\n\n _proto.componentWillMount = function componentWillMount() {\n mountedInstances.push(this);\n emitChange();\n };\n\n _proto.componentDidUpdate = function componentDidUpdate() {\n emitChange();\n };\n\n _proto.componentWillUnmount = function componentWillUnmount() {\n var index = mountedInstances.indexOf(this);\n mountedInstances.splice(index, 1);\n emitChange();\n };\n\n _proto.render = function render() {\n return React__default.createElement(WrappedComponent, this.props);\n };\n\n return SideEffect;\n }(React.Component);\n\n _defineProperty(SideEffect, \"displayName\", \"SideEffect(\" + getDisplayName(WrappedComponent) + \")\");\n\n _defineProperty(SideEffect, \"canUseDOM\", canUseDOM);\n\n return SideEffect;\n };\n}\n\nmodule.exports = withSideEffect;","\"use strict\";\n\nObject.defineProperty(exports, \"__esModule\", {\n value: true\n});\n\nvar _extends = Object.assign || function (target) {\n for (var i = 1; i < arguments.length; i++) {\n var source = arguments[i];\n\n for (var key in source) {\n if (Object.prototype.hasOwnProperty.call(source, key)) {\n target[key] = source[key];\n }\n }\n }\n\n return target;\n};\n\nvar _grayPercentage = require(\"gray-percentage\");\n\nvar _grayPercentage2 = _interopRequireDefault(_grayPercentage);\n\nvar _typographyBreakpointConstants = require(\"typography-breakpoint-constants\");\n\nfunction _interopRequireDefault(obj) {\n return obj && obj.__esModule ? obj : {\n default: obj\n };\n}\n\nfunction _defineProperty(obj, key, value) {\n if (key in obj) {\n Object.defineProperty(obj, key, {\n value: value,\n enumerable: true,\n configurable: true,\n writable: true\n });\n } else {\n obj[key] = value;\n }\n\n return obj;\n}\n\nvar theme = {\n title: \"Wordpress Theme 2016\",\n baseFontSize: \"16px\",\n baseLineHeight: 1.75,\n scaleRatio: 5 / 2,\n googleFonts: [{\n name: \"Montserrat\",\n styles: [\"700\"]\n }, {\n name: \"Merriweather\",\n styles: [\"400\", \"400i\", \"700\", \"700i\", \"900\", \"900i\"]\n }],\n headerFontFamily: [\"Merriweather\", \"Georgia\", \"serif\"],\n bodyFontFamily: [\"Merriweather\", \"Georgia\", \"serif\"],\n bodyColor: \"hsla(0,0%,0%,0.9)\",\n headerWeight: 900,\n bodyWeight: 400,\n boldWeight: 700,\n overrideStyles: function overrideStyles(_ref, options) {\n var _ref2;\n\n var adjustFontSizeTo = _ref.adjustFontSizeTo,\n scale = _ref.scale,\n rhythm = _ref.rhythm;\n return _ref2 = {\n h1: {\n fontFamily: [\"Montserrat\", \"sans-serif\"].join(\",\")\n },\n blockquote: _extends({}, scale(1 / 5), {\n color: (0, _grayPercentage2.default)(41),\n fontStyle: \"italic\",\n paddingLeft: rhythm(13 / 16),\n marginLeft: rhythm(-1),\n borderLeft: rhythm(3 / 16) + \" solid \" + (0, _grayPercentage2.default)(10)\n }),\n \"blockquote > :last-child\": {\n marginBottom: 0\n },\n \"blockquote cite\": _extends({}, adjustFontSizeTo(options.baseFontSize), {\n color: options.bodyColor,\n fontWeight: options.bodyWeight\n }),\n \"blockquote cite:before\": {\n content: '\"— \"'\n },\n ul: {\n listStyle: \"disc\"\n },\n \"ul,ol\": {\n marginLeft: 0\n }\n }, _defineProperty(_ref2, _typographyBreakpointConstants.MOBILE_MEDIA_QUERY, {\n \"ul,ol\": {\n marginLeft: rhythm(1)\n },\n blockquote: {\n marginLeft: rhythm(-3 / 4),\n marginRight: 0,\n paddingLeft: rhythm(9 / 16)\n }\n }), _defineProperty(_ref2, \"h1,h2,h3,h4,h5,h6\", {\n marginTop: rhythm(2)\n }), _defineProperty(_ref2, \"h4\", {\n letterSpacing: \"0.140625em\",\n textTransform: \"uppercase\"\n }), _defineProperty(_ref2, \"h6\", {\n fontStyle: \"italic\"\n }), _defineProperty(_ref2, \"a\", {\n boxShadow: \"0 1px 0 0 currentColor\",\n color: \"#007acc\",\n textDecoration: \"none\"\n }), _defineProperty(_ref2, \"a:hover,a:active\", {\n boxShadow: \"none\"\n }), _defineProperty(_ref2, \"mark,ins\", {\n background: \"#007acc\",\n color: \"white\",\n padding: rhythm(1 / 16) + \" \" + rhythm(1 / 8),\n textDecoration: \"none\"\n }), _ref2;\n }\n};\nexports.default = theme;","import React from 'react'\nimport { Link } from 'gatsby'\nimport { rhythm, scale } from '../utils/typography'\n\nclass Layout extends React.Component {\n render() {\n const { location, title, children } = this.props\n const rootPath = `${__PATH_PREFIX__}/`\n let header\n\n if (location.pathname === rootPath) {\n header = (\n \n \n {title}\n \n \n )\n } else {\n header = (\n \n \n {title}\n \n \n )\n }\n return (\n \n \n {header}\n \n

{children}

\n \n )\n }\n}\n\nexport default Layout\n","\"use strict\";\n\nObject.defineProperty(exports, \"__esModule\", {\n value: true\n});\nvar LARGER_DISPLAY_WIDTH = exports.LARGER_DISPLAY_WIDTH = \"1600px\";\nvar LARGE_DISPLAY_WIDTH = exports.LARGE_DISPLAY_WIDTH = \"1280px\";\nvar DEFAULT_WIDTH = exports.DEFAULT_WIDTH = \"980px\";\nvar TABLET_WIDTH = exports.TABLET_WIDTH = \"768px\";\nvar MOBILE_WIDTH = exports.MOBILE_WIDTH = \"480px\";\nvar LARGER_DISPLAY_MEDIA_QUERY = exports.LARGER_DISPLAY_MEDIA_QUERY = \"@media only screen and (max-width:1600px)\";\nvar LARGE_DISPLAY_MEDIA_QUERY = exports.LARGE_DISPLAY_MEDIA_QUERY = \"@media only screen and (max-width:1280px)\";\nvar DEFAULT_MEDIA_QUERY = exports.DEFAULT_MEDIA_QUERY = \"@media only screen and (max-width:980px)\";\nvar TABLET_MEDIA_QUERY = exports.TABLET_MEDIA_QUERY = \"@media only screen and (max-width:768px)\";\nvar MOBILE_MEDIA_QUERY = exports.MOBILE_MEDIA_QUERY = \"@media only screen and (max-width:480px)\";\nvar MIN_LARGER_DISPLAY_MEDIA_QUERY = exports.MIN_LARGER_DISPLAY_MEDIA_QUERY = \"@media (min-width:1600px)\";\nvar MIN_LARGE_DISPLAY_MEDIA_QUERY = exports.MIN_LARGE_DISPLAY_MEDIA_QUERY = \"@media (min-width:1280px)\";\nvar MIN_DEFAULT_MEDIA_QUERY = exports.MIN_DEFAULT_MEDIA_QUERY = \"@media (min-width:980px)\";\nvar MIN_TABLET_MEDIA_QUERY = exports.MIN_TABLET_MEDIA_QUERY = \"@media (min-width:768px)\";\nvar MIN_MOBILE_MEDIA_QUERY = exports.MIN_MOBILE_MEDIA_QUERY = \"@media (min-width:480px)\";","//\nmodule.exports = function shallowEqual(objA, objB, compare, compareContext) {\n var ret = compare ? compare.call(compareContext, objA, objB) : void 0;\n\n if (ret !== void 0) {\n return !!ret;\n }\n\n if (objA === objB) {\n return true;\n }\n\n if (typeof objA !== \"object\" || !objA || typeof objB !== \"object\" || !objB) {\n return false;\n }\n\n var keysA = Object.keys(objA);\n var keysB = Object.keys(objB);\n\n if (keysA.length !== keysB.length) {\n return false;\n }\n\n var bHasOwnProperty = Object.prototype.hasOwnProperty.bind(objB); // Test for A's keys different from B.\n\n for (var idx = 0; idx < keysA.length; idx++) {\n var key = keysA[idx];\n\n if (!bHasOwnProperty(key)) {\n return false;\n }\n\n var valueA = objA[key];\n var valueB = objB[key];\n ret = compare ? compare.call(compareContext, valueA, valueB, key) : void 0;\n\n if (ret === false || ret === void 0 && valueA !== valueB) {\n return false;\n }\n }\n\n return true;\n};","exports.__esModule = true;\nexports.Helmet = undefined;\n\nvar _extends = Object.assign || function (target) {\n for (var i = 1; i < arguments.length; i++) {\n var source = arguments[i];\n\n for (var key in source) {\n if (Object.prototype.hasOwnProperty.call(source, key)) {\n target[key] = source[key];\n }\n }\n }\n\n return target;\n};\n\nvar _createClass = function () {\n function defineProperties(target, props) {\n for (var i = 0; i < props.length; i++) {\n var descriptor = props[i];\n descriptor.enumerable = descriptor.enumerable || false;\n descriptor.configurable = true;\n if (\"value\" in descriptor) descriptor.writable = true;\n Object.defineProperty(target, descriptor.key, descriptor);\n }\n }\n\n return function (Constructor, protoProps, staticProps) {\n if (protoProps) defineProperties(Constructor.prototype, protoProps);\n if (staticProps) defineProperties(Constructor, staticProps);\n return Constructor;\n };\n}();\n\nvar _react = require(\"react\");\n\nvar _react2 = _interopRequireDefault(_react);\n\nvar _propTypes = require(\"prop-types\");\n\nvar _propTypes2 = _interopRequireDefault(_propTypes);\n\nvar _reactSideEffect = require(\"react-side-effect\");\n\nvar _reactSideEffect2 = _interopRequireDefault(_reactSideEffect);\n\nvar _reactFastCompare = require(\"react-fast-compare\");\n\nvar _reactFastCompare2 = _interopRequireDefault(_reactFastCompare);\n\nvar _HelmetUtils = require(\"./HelmetUtils.js\");\n\nvar _HelmetConstants = require(\"./HelmetConstants.js\");\n\nfunction _interopRequireDefault(obj) {\n return obj && obj.__esModule ? obj : {\n default: obj\n };\n}\n\nfunction _objectWithoutProperties(obj, keys) {\n var target = {};\n\n for (var i in obj) {\n if (keys.indexOf(i) >= 0) continue;\n if (!Object.prototype.hasOwnProperty.call(obj, i)) continue;\n target[i] = obj[i];\n }\n\n return target;\n}\n\nfunction _classCallCheck(instance, Constructor) {\n if (!(instance instanceof Constructor)) {\n throw new TypeError(\"Cannot call a class as a function\");\n }\n}\n\nfunction _possibleConstructorReturn(self, call) {\n if (!self) {\n throw new ReferenceError(\"this hasn't been initialised - super() hasn't been called\");\n }\n\n return call && (typeof call === \"object\" || typeof call === \"function\") ? call : self;\n}\n\nfunction _inherits(subClass, superClass) {\n if (typeof superClass !== \"function\" && superClass !== null) {\n throw new TypeError(\"Super expression must either be null or a function, not \" + typeof superClass);\n }\n\n subClass.prototype = Object.create(superClass && superClass.prototype, {\n constructor: {\n value: subClass,\n enumerable: false,\n writable: true,\n configurable: true\n }\n });\n if (superClass) Object.setPrototypeOf ? Object.setPrototypeOf(subClass, superClass) : subClass.__proto__ = superClass;\n}\n\nvar Helmet = function Helmet(Component) {\n var _class, _temp;\n\n return _temp = _class = function (_React$Component) {\n _inherits(HelmetWrapper, _React$Component);\n\n function HelmetWrapper() {\n _classCallCheck(this, HelmetWrapper);\n\n return _possibleConstructorReturn(this, _React$Component.apply(this, arguments));\n }\n\n HelmetWrapper.prototype.shouldComponentUpdate = function shouldComponentUpdate(nextProps) {\n return !(0, _reactFastCompare2.default)(this.props, nextProps);\n };\n\n HelmetWrapper.prototype.mapNestedChildrenToProps = function mapNestedChildrenToProps(child, nestedChildren) {\n if (!nestedChildren) {\n return null;\n }\n\n switch (child.type) {\n case _HelmetConstants.TAG_NAMES.SCRIPT:\n case _HelmetConstants.TAG_NAMES.NOSCRIPT:\n return {\n innerHTML: nestedChildren\n };\n\n case _HelmetConstants.TAG_NAMES.STYLE:\n return {\n cssText: nestedChildren\n };\n }\n\n throw new Error(\"<\" + child.type + \" /> elements are self-closing and can not contain children. Refer to our API for more information.\");\n };\n\n HelmetWrapper.prototype.flattenArrayTypeChildren = function flattenArrayTypeChildren(_ref) {\n var _extends2;\n\n var child = _ref.child,\n arrayTypeChildren = _ref.arrayTypeChildren,\n newChildProps = _ref.newChildProps,\n nestedChildren = _ref.nestedChildren;\n return _extends({}, arrayTypeChildren, (_extends2 = {}, _extends2[child.type] = [].concat(arrayTypeChildren[child.type] || [], [_extends({}, newChildProps, this.mapNestedChildrenToProps(child, nestedChildren))]), _extends2));\n };\n\n HelmetWrapper.prototype.mapObjectTypeChildren = function mapObjectTypeChildren(_ref2) {\n var _extends3, _extends4;\n\n var child = _ref2.child,\n newProps = _ref2.newProps,\n newChildProps = _ref2.newChildProps,\n nestedChildren = _ref2.nestedChildren;\n\n switch (child.type) {\n case _HelmetConstants.TAG_NAMES.TITLE:\n return _extends({}, newProps, (_extends3 = {}, _extends3[child.type] = nestedChildren, _extends3.titleAttributes = _extends({}, newChildProps), _extends3));\n\n case _HelmetConstants.TAG_NAMES.BODY:\n return _extends({}, newProps, {\n bodyAttributes: _extends({}, newChildProps)\n });\n\n case _HelmetConstants.TAG_NAMES.HTML:\n return _extends({}, newProps, {\n htmlAttributes: _extends({}, newChildProps)\n });\n }\n\n return _extends({}, newProps, (_extends4 = {}, _extends4[child.type] = _extends({}, newChildProps), _extends4));\n };\n\n HelmetWrapper.prototype.mapArrayTypeChildrenToProps = function mapArrayTypeChildrenToProps(arrayTypeChildren, newProps) {\n var newFlattenedProps = _extends({}, newProps);\n\n Object.keys(arrayTypeChildren).forEach(function (arrayChildName) {\n var _extends5;\n\n newFlattenedProps = _extends({}, newFlattenedProps, (_extends5 = {}, _extends5[arrayChildName] = arrayTypeChildren[arrayChildName], _extends5));\n });\n return newFlattenedProps;\n };\n\n HelmetWrapper.prototype.warnOnInvalidChildren = function warnOnInvalidChildren(child, nestedChildren) {\n if (process.env.NODE_ENV !== \"production\") {\n if (!_HelmetConstants.VALID_TAG_NAMES.some(function (name) {\n return child.type === name;\n })) {\n if (typeof child.type === \"function\") {\n return (0, _HelmetUtils.warn)(\"You may be attempting to nest components within each other, which is not allowed. Refer to our API for more information.\");\n }\n\n return (0, _HelmetUtils.warn)(\"Only elements types \" + _HelmetConstants.VALID_TAG_NAMES.join(\", \") + \" are allowed. Helmet does not support rendering <\" + child.type + \"> elements. Refer to our API for more information.\");\n }\n\n if (nestedChildren && typeof nestedChildren !== \"string\" && (!Array.isArray(nestedChildren) || nestedChildren.some(function (nestedChild) {\n return typeof nestedChild !== \"string\";\n }))) {\n throw new Error(\"Helmet expects a string as a child of <\" + child.type + \">. Did you forget to wrap your children in braces? ( <\" + child.type + \">{``} ) Refer to our API for more information.\");\n }\n }\n\n return true;\n };\n\n HelmetWrapper.prototype.mapChildrenToProps = function mapChildrenToProps(children, newProps) {\n var _this2 = this;\n\n var arrayTypeChildren = {};\n\n _react2.default.Children.forEach(children, function (child) {\n if (!child || !child.props) {\n return;\n }\n\n var _child$props = child.props,\n nestedChildren = _child$props.children,\n childProps = _objectWithoutProperties(_child$props, [\"children\"]);\n\n var newChildProps = (0, _HelmetUtils.convertReactPropstoHtmlAttributes)(childProps);\n\n _this2.warnOnInvalidChildren(child, nestedChildren);\n\n switch (child.type) {\n case _HelmetConstants.TAG_NAMES.LINK:\n case _HelmetConstants.TAG_NAMES.META:\n case _HelmetConstants.TAG_NAMES.NOSCRIPT:\n case _HelmetConstants.TAG_NAMES.SCRIPT:\n case _HelmetConstants.TAG_NAMES.STYLE:\n arrayTypeChildren = _this2.flattenArrayTypeChildren({\n child: child,\n arrayTypeChildren: arrayTypeChildren,\n newChildProps: newChildProps,\n nestedChildren: nestedChildren\n });\n break;\n\n default:\n newProps = _this2.mapObjectTypeChildren({\n child: child,\n newProps: newProps,\n newChildProps: newChildProps,\n nestedChildren: nestedChildren\n });\n break;\n }\n });\n\n newProps = this.mapArrayTypeChildrenToProps(arrayTypeChildren, newProps);\n return newProps;\n };\n\n HelmetWrapper.prototype.render = function render() {\n var _props = this.props,\n children = _props.children,\n props = _objectWithoutProperties(_props, [\"children\"]);\n\n var newProps = _extends({}, props);\n\n if (children) {\n newProps = this.mapChildrenToProps(children, newProps);\n }\n\n return _react2.default.createElement(Component, newProps);\n };\n\n _createClass(HelmetWrapper, null, [{\n key: \"canUseDOM\",\n // Component.peek comes from react-side-effect:\n // For testing, you may use a static peek() method available on the returned component.\n // It lets you get the current state without resetting the mounted instance stack.\n // Don’t use it for anything other than testing.\n\n /**\n * @param {Object} base: {\"target\": \"_blank\", \"href\": \"http://mysite.com/\"}\n * @param {Object} bodyAttributes: {\"className\": \"root\"}\n * @param {String} defaultTitle: \"Default Title\"\n * @param {Boolean} defer: true\n * @param {Boolean} encodeSpecialCharacters: true\n * @param {Object} htmlAttributes: {\"lang\": \"en\", \"amp\": undefined}\n * @param {Array} link: [{\"rel\": \"canonical\", \"href\": \"http://mysite.com/example\"}]\n * @param {Array} meta: [{\"name\": \"description\", \"content\": \"Test description\"}]\n * @param {Array} noscript: [{\"innerHTML\": \"

console.log(newState)\"\n * @param {Array} script: [{\"type\": \"text/javascript\", \"src\": \"http://mysite.com/js/test.js\"}]\n * @param {Array} style: [{\"type\": \"text/css\", \"cssText\": \"div { display: block; color: blue; }\"}]\n * @param {String} title: \"Title\"\n * @param {Object} titleAttributes: {\"itemprop\": \"name\"}\n * @param {String} titleTemplate: \"MySite.com - %s\"\n */\n set: function set(canUseDOM) {\n Component.canUseDOM = canUseDOM;\n }\n }]);\n\n return HelmetWrapper;\n }(_react2.default.Component), _class.propTypes = {\n base: _propTypes2.default.object,\n bodyAttributes: _propTypes2.default.object,\n children: _propTypes2.default.oneOfType([_propTypes2.default.arrayOf(_propTypes2.default.node), _propTypes2.default.node]),\n defaultTitle: _propTypes2.default.string,\n defer: _propTypes2.default.bool,\n encodeSpecialCharacters: _propTypes2.default.bool,\n htmlAttributes: _propTypes2.default.object,\n link: _propTypes2.default.arrayOf(_propTypes2.default.object),\n meta: _propTypes2.default.arrayOf(_propTypes2.default.object),\n noscript: _propTypes2.default.arrayOf(_propTypes2.default.object),\n onChangeClientState: _propTypes2.default.func,\n script: _propTypes2.default.arrayOf(_propTypes2.default.object),\n style: _propTypes2.default.arrayOf(_propTypes2.default.object),\n title: _propTypes2.default.string,\n titleAttributes: _propTypes2.default.object,\n titleTemplate: _propTypes2.default.string\n }, _class.defaultProps = {\n defer: true,\n encodeSpecialCharacters: true\n }, _class.peek = Component.peek, _class.rewind = function () {\n var mappedState = Component.rewind();\n\n if (!mappedState) {\n // provide fallback if mappedState is undefined\n mappedState = (0, _HelmetUtils.mapStateOnServer)({\n baseTag: [],\n bodyAttributes: {},\n encodeSpecialCharacters: true,\n htmlAttributes: {},\n linkTags: [],\n metaTags: [],\n noscriptTags: [],\n scriptTags: [],\n styleTags: [],\n title: \"\",\n titleAttributes: {}\n });\n }\n\n return mappedState;\n }, _temp;\n};\n\nvar NullComponent = function NullComponent() {\n return null;\n};\n\nvar HelmetSideEffects = (0, _reactSideEffect2.default)(_HelmetUtils.reducePropsToState, _HelmetUtils.handleClientStateChange, _HelmetUtils.mapStateOnServer)(NullComponent);\nvar HelmetExport = Helmet(HelmetSideEffects);\nHelmetExport.renderStatic = HelmetExport.rewind;\nexports.Helmet = HelmetExport;\nexports.default = HelmetExport;","function isNumeric(n) {\n return !isNaN(parseFloat(n)) && isFinite(n);\n}\n\nmodule.exports = function (lightness, hue, darkBackground) {\n if (typeof hue === \"undefined\") {\n hue = 0;\n }\n\n if (typeof darkBackground === \"undefined\") {\n darkBackground = false;\n } // Convert named hues into numeric lightness value.\n\n\n if (hue === \"cool\") {\n hue = 237;\n } else if (hue === \"slate\") {\n hue = 122;\n } else if (hue === \"warm\") {\n hue = 69;\n }\n\n if (!isNumeric(hue)) {\n throw new Error(\"Hue is not a number\");\n }\n\n if (!isNumeric(lightness)) {\n throw new Error(\"Lightness is not a number\");\n }\n\n if (lightness > 100) {\n lightness = 100;\n }\n\n if (lightness < 0) {\n lightness = 0;\n }\n\n var saturation = 0;\n\n if (hue !== 0) {\n var a = 19.92978;\n var b = -0.3651759;\n var c = 0.001737214;\n saturation = a + b * lightness + c * Math.pow(lightness, 2);\n }\n\n var opacity = 0;\n\n if (darkBackground) {\n opacity = lightness / 100;\n lightness = '100%,';\n } else {\n opacity = (100 - lightness) / 100;\n lightness = '0%,';\n }\n\n return \"hsla(\" + hue + \",\" + saturation + \"%,\" + lightness + opacity + \")\";\n};","'use strict';\n\nvar isArray = Array.isArray;\nvar keyList = Object.keys;\nvar hasProp = Object.prototype.hasOwnProperty;\nvar hasElementType = typeof Element !== 'undefined';\n\nfunction equal(a, b) {\n // fast-deep-equal index.js 2.0.1\n if (a === b) return true;\n\n if (a && b && typeof a == 'object' && typeof b == 'object') {\n var arrA = isArray(a),\n arrB = isArray(b),\n i,\n length,\n key;\n\n if (arrA && arrB) {\n length = a.length;\n if (length != b.length) return false;\n\n for (i = length; i-- !== 0;) {\n if (!equal(a[i], b[i])) return false;\n }\n\n return true;\n }\n\n if (arrA != arrB) return false;\n var dateA = a instanceof Date,\n dateB = b instanceof Date;\n if (dateA != dateB) return false;\n if (dateA && dateB) return a.getTime() == b.getTime();\n var regexpA = a instanceof RegExp,\n regexpB = b instanceof RegExp;\n if (regexpA != regexpB) return false;\n if (regexpA && regexpB) return a.toString() == b.toString();\n var keys = keyList(a);\n length = keys.length;\n if (length !== keyList(b).length) return false;\n\n for (i = length; i-- !== 0;) {\n if (!hasProp.call(b, keys[i])) return false;\n } // end fast-deep-equal\n // start react-fast-compare\n // custom handling for DOM elements\n\n\n if (hasElementType && a instanceof Element && b instanceof Element) return a === b; // custom handling for React\n\n for (i = length; i-- !== 0;) {\n key = keys[i];\n\n if (key === '_owner' && a.$$typeof) {\n // React-specific: avoid traversing React elements' _owner.\n // _owner contains circular references\n // and is not needed when comparing the actual elements (and not their owners)\n // .$$typeof and ._store on just reasonable markers of a react element\n continue;\n } else {\n // all other properties should be traversed as usual\n if (!equal(a[key], b[key])) return false;\n }\n } // end react-fast-compare\n // fast-deep-equal index.js 2.0.1\n\n\n return true;\n }\n\n return a !== a && b !== b;\n} // end fast-deep-equal\n\n\nmodule.exports = function exportedEqual(a, b) {\n try {\n return equal(a, b);\n } catch (error) {\n if (error.message && error.message.match(/stack|recursion/i) || error.number === -2146828260) {\n // warn on circular references, don't crash\n // browsers give this different errors name and messages:\n // chrome/safari: \"RangeError\", \"Maximum call stack size exceeded\"\n // firefox: \"InternalError\", too much recursion\"\n // edge: \"Error\", \"Out of stack space\"\n console.warn('Warning: react-fast-compare does not handle circular references.', error.name, error.message);\n return false;\n } // some other error. we should definitely know about these\n\n\n throw error;\n }\n};","exports.__esModule = true;\nvar ATTRIBUTE_NAMES = exports.ATTRIBUTE_NAMES = {\n BODY: \"bodyAttributes\",\n HTML: \"htmlAttributes\",\n TITLE: \"titleAttributes\"\n};\nvar TAG_NAMES = exports.TAG_NAMES = {\n BASE: \"base\",\n BODY: \"body\",\n HEAD: \"head\",\n HTML: \"html\",\n LINK: \"link\",\n META: \"meta\",\n NOSCRIPT: \"noscript\",\n SCRIPT: \"script\",\n STYLE: \"style\",\n TITLE: \"title\"\n};\nvar VALID_TAG_NAMES = exports.VALID_TAG_NAMES = Object.keys(TAG_NAMES).map(function (name) {\n return TAG_NAMES[name];\n});\nvar TAG_PROPERTIES = exports.TAG_PROPERTIES = {\n CHARSET: \"charset\",\n CSS_TEXT: \"cssText\",\n HREF: \"href\",\n HTTPEQUIV: \"http-equiv\",\n INNER_HTML: \"innerHTML\",\n ITEM_PROP: \"itemprop\",\n NAME: \"name\",\n PROPERTY: \"property\",\n REL: \"rel\",\n SRC: \"src\"\n};\nvar REACT_TAG_MAP = exports.REACT_TAG_MAP = {\n accesskey: \"accessKey\",\n charset: \"charSet\",\n class: \"className\",\n contenteditable: \"contentEditable\",\n contextmenu: \"contextMenu\",\n \"http-equiv\": \"httpEquiv\",\n itemprop: \"itemProp\",\n tabindex: \"tabIndex\"\n};\nvar HELMET_PROPS = exports.HELMET_PROPS = {\n DEFAULT_TITLE: \"defaultTitle\",\n DEFER: \"defer\",\n ENCODE_SPECIAL_CHARACTERS: \"encodeSpecialCharacters\",\n ON_CHANGE_CLIENT_STATE: \"onChangeClientState\",\n TITLE_TEMPLATE: \"titleTemplate\"\n};\nvar HTML_TAG_MAP = exports.HTML_TAG_MAP = Object.keys(REACT_TAG_MAP).reduce(function (obj, key) {\n obj[REACT_TAG_MAP[key]] = key;\n return obj;\n}, {});\nvar SELF_CLOSING_TAGS = exports.SELF_CLOSING_TAGS = [TAG_NAMES.NOSCRIPT, TAG_NAMES.SCRIPT, TAG_NAMES.STYLE];\nvar HELMET_ATTRIBUTE = exports.HELMET_ATTRIBUTE = \"data-react-helmet\";","var t = Object.getOwnPropertySymbols,\n e = Object.prototype.hasOwnProperty,\n r = Object.prototype.propertyIsEnumerable;\n\nvar n,\n o,\n i = function () {\n try {\n if (!Object.assign) return !1;\n var t = new String(\"abc\");\n if (t[5] = \"de\", \"5\" === Object.getOwnPropertyNames(t)[0]) return !1;\n\n for (var e = {}, r = 0; r < 10; r++) {\n e[\"_\" + String.fromCharCode(r)] = r;\n }\n\n if (\"0123456789\" !== Object.getOwnPropertyNames(e).map(function (t) {\n return e[t];\n }).join(\"\")) return !1;\n var n = {};\n return \"abcdefghijklmnopqrst\".split(\"\").forEach(function (t) {\n n[t] = t;\n }), \"abcdefghijklmnopqrst\" === Object.keys(Object.assign({}, n)).join(\"\");\n } catch (t) {\n return !1;\n }\n}() ? Object.assign : function (n, o) {\n for (var i, a, u = function (t) {\n if (null === t || void 0 === t) throw new TypeError(\"Object.assign cannot be called with null or undefined\");\n return Object(t);\n }(n), c = 1; c < arguments.length; c++) {\n for (var l in i = Object(arguments[c])) {\n e.call(i, l) && (u[l] = i[l]);\n }\n\n if (t) {\n a = t(i);\n\n for (var f = 0; f < a.length; f++) {\n r.call(i, a[f]) && (u[a[f]] = i[a[f]]);\n }\n }\n }\n\n return u;\n},\n a = function a(t, e) {\n e || (e = [0, \"\"]), t = String(t);\n var r = parseFloat(t, 10);\n return e[0] = r, e[1] = t.match(/[\\d.\\-\\+]*\\s*(.*)/)[1] || \"\", e;\n},\n u = function u(t) {\n return a(t)[0];\n},\n c = function c(t) {\n return null == t && (t = t), function (e, r, n, o) {\n null == n && (n = t), null == o && (o = n);\n var i = a(e)[1];\n if (i === r) return e;\n var c = u(e);\n if (\"px\" !== i) if (\"em\" === i) c = u(e) * u(n);else if (\"rem\" === i) c = u(e) * u(t);else {\n if (\"ex\" !== i) return e;\n c = u(e) * u(n) * 2;\n }\n var l = c;\n if (\"px\" !== r) if (\"em\" === r) l = c / u(o);else if (\"rem\" === r) l = c / u(t);else {\n if (\"ex\" !== r) return e;\n l = c / u(o) / 2;\n }\n return parseFloat(l.toFixed(5)) + r;\n };\n},\n l = a,\n f = function f(t) {\n return l(t)[1];\n},\n s = function s(t) {\n return l(t)[0];\n},\n p = {\n baseFontSize: \"16px\",\n baseLineHeight: 1.5,\n rhythmUnit: \"rem\",\n defaultRhythmBorderWidth: \"1px\",\n defaultRhythmBorderStyle: \"solid\",\n roundToNearestHalfLine: !0,\n minLinePadding: \"2px\"\n},\n v = function v(t, e) {\n var r,\n n = c(e.baseFontSize),\n o = s(n(t, \"px\")),\n i = s(e.baseLineHeightInPx),\n a = s(n(e.minLinePadding, \"px\"));\n return (r = e.roundToNearestHalfLine ? 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Hr : oo,\n o = arguments.length < 3;\n return n(t, no(e, 4), r, o, Ne);\n},\n ao = function ao(t, e, r) {\n var n;\n return void 0 === t && (t = {}), n = at(e) ? e : [e], Ie(n, function (e) {\n Ie(r, function (r, n) {\n ue(t, e + \".\" + n, r);\n });\n }), t;\n},\n uo = [\"inherit\", \"default\", \"serif\", \"sans-serif\", \"monospace\", \"fantasy\", \"cursive\", \"-apple-system\"],\n co = function co(t) {\n return -1 !== uo.indexOf(t) ? t : \"'\" + t + \"'\";\n};\n\nvar lo,\n fo = j(function (t, e) {\n Object.defineProperty(e, \"__esModule\", {\n value: !0\n }), e.default = \"html{font-family:sans-serif;-ms-text-size-adjust:100%;-webkit-text-size-adjust:100%}body{margin:0}article,aside,details,figcaption,figure,footer,header,main,menu,nav,section,summary{display:block}audio,canvas,progress,video{display:inline-block}audio:not([controls]){display:none;height:0}progress{vertical-align:baseline}[hidden],template{display:none}a{background-color:transparent;-webkit-text-decoration-skip:objects}a:active,a:hover{outline-width:0}abbr[title]{border-bottom:none;text-decoration:underline;text-decoration:underline dotted}b,strong{font-weight:inherit;font-weight:bolder}dfn{font-style:italic}h1{font-size:2em;margin:.67em 0}mark{background-color:#ff0;color:#000}small{font-size:80%}sub,sup{font-size:75%;line-height:0;position:relative;vertical-align:baseline}sub{bottom:-.25em}sup{top:-.5em}img{border-style:none}svg:not(:root){overflow:hidden}code,kbd,pre,samp{font-family:monospace,monospace;font-size:1em}figure{margin:1em 40px}hr{box-sizing:content-box;height:0;overflow:visible}button,input,optgroup,select,textarea{font:inherit;margin:0}optgroup{font-weight:700}button,input{overflow:visible}button,select{text-transform:none}[type=reset],[type=submit],button,html [type=button]{-webkit-appearance:button}[type=button]::-moz-focus-inner,[type=reset]::-moz-focus-inner,[type=submit]::-moz-focus-inner,button::-moz-focus-inner{border-style:none;padding:0}[type=button]:-moz-focusring,[type=reset]:-moz-focusring,[type=submit]:-moz-focusring,button:-moz-focusring{outline:1px dotted ButtonText}fieldset{border:1px solid silver;margin:0 2px;padding:.35em .625em .75em}legend{box-sizing:border-box;color:inherit;display:table;max-width:100%;padding:0;white-space:normal}textarea{overflow:auto}[type=checkbox],[type=radio]{box-sizing:border-box;padding:0}[type=number]::-webkit-inner-spin-button,[type=number]::-webkit-outer-spin-button{height:auto}[type=search]{-webkit-appearance:textfield;outline-offset:-2px}[type=search]::-webkit-search-cancel-button,[type=search]::-webkit-search-decoration{-webkit-appearance:none}::-webkit-input-placeholder{color:inherit;opacity:.54}::-webkit-file-upload-button{-webkit-appearance:button;font:inherit}\";\n}),\n so = (lo = fo) && lo.__esModule && Object.prototype.hasOwnProperty.call(lo, \"default\") ? lo.default : lo,\n po = function po(t) {\n return io(t, function (t, e, r) {\n return t += r + \"{\", Ie(e, function (e, r) {\n if (H(e)) {\n var n = {};\n n[r] = e, t += po(n);\n } else {\n var o = function (t, e) {\n if (\"string\" != typeof t) throw new TypeError(\"Expected a string\");\n return t.replace(/([a-z\\d])([A-Z])/g, \"$1\" + (e = void 0 === e ? \"_\" : e) + \"$2\").replace(/([A-Z]+)([A-Z][a-z\\d]+)/g, \"$1\" + e + \"$2\").toLowerCase();\n }(r, \"-\") + \":\" + e + \";\";\n\n [\"Webkit\", \"ms\", \"Moz\", \"O\"].forEach(function (t) {\n r.slice(0, t.length) === t && (o = \"-\" + o);\n }), t += o;\n }\n }), t += \"}\";\n }, \"\");\n};\n\nmodule.exports = function (t) {\n var e,\n r,\n a,\n u,\n l = i({}, {\n baseFontSize: \"16px\",\n baseLineHeight: 1.45,\n headerLineHeight: 1.1,\n scaleRatio: 2,\n googleFonts: [],\n headerFontFamily: [\"-apple-system\", \"BlinkMacSystemFont\", \"Segoe UI\", \"Roboto\", \"Oxygen\", \"Ubuntu\", \"Cantarell\", \"Fira Sans\", \"Droid Sans\", \"Helvetica Neue\", \"sans-serif\"],\n bodyFontFamily: [\"georgia\", \"serif\"],\n headerColor: \"inherit\",\n bodyColor: \"hsla(0,0%,0%,0.8)\",\n headerWeight: \"bold\",\n bodyWeight: \"normal\",\n boldWeight: \"bold\",\n includeNormalize: !0,\n blockMarginBottom: 1\n }, t),\n d = (e = l, r = JSON.parse(JSON.stringify(p)), a = Object.assign({}, r, e), u = c(a.baseFontSize), f(a.baseLineHeight) ? (s(u(a.baseFontSize, \"px\")), a.baseLineHeightInPx = u(a.baseLineHeight, \"px\")) : a.baseLineHeightInPx = s(a.baseFontSize) * a.baseLineHeight + \"px\", {\n rhythm: h(a),\n establishBaseline: function establishBaseline() {\n return c((t = a).baseFontSize), {\n fontSize: s(t.baseFontSize) / 16 * 100 + \"%\",\n lineHeight: t.baseLineHeight.toString()\n };\n var t;\n },\n linesForFontSize: function linesForFontSize(t) {\n return v(t, a);\n },\n adjustFontSizeTo: function adjustFontSizeTo(t, e, r) {\n return null == e && (e = \"auto\"), function (t, e, r, n) {\n null == r && (r = n.baseFontSize), \"%\" === f(t) && (t = s(n.baseFontSize) * (s(t) / 100) + \"px\");\n var o = c(n.baseFontSize);\n t = o(t, \"px\", r = o(r, \"px\"));\n var i = h(n);\n return \"auto\" === e && (e = v(t, n)), {\n fontSize: o(t, n.rhythmUnit, r),\n lineHeight: i(e, r)\n };\n }(t, e, r, a);\n }\n });\n return d.scale = function (t) {\n var e = parseInt(l.baseFontSize, 10),\n r = function (t, e) {\n var r;\n return null == t && (t = 0), null == e && (e = \"golden\"), r = n(e) ? e : null != o[e] ? o[e] : o.golden, Math.pow(r, t);\n }(t, l.scaleRatio) * e + \"px\";\n\n return d.adjustFontSizeTo(r);\n }, Object.assign({}, {\n options: l\n }, d, {\n createStyles: function createStyles() {\n return this.toString();\n },\n toJSON: function toJSON() {\n return function (t, e) {\n var r = {},\n n = t.establishBaseline();\n r = ao(r, \"html\", {\n font: n.fontSize + \"/\" + n.lineHeight + \" \" + e.bodyFontFamily.map(co).join(\",\"),\n boxSizing: \"border-box\",\n overflowY: \"scroll\"\n }), r = ao(r, [\"*\", \"*:before\", \"*:after\"], {\n boxSizing: \"inherit\"\n }), r = ao(r, \"body\", {\n color: e.bodyColor,\n fontFamily: e.bodyFontFamily.map(co).join(\",\"),\n fontWeight: e.bodyWeight,\n wordWrap: \"break-word\",\n fontKerning: \"normal\",\n MozFontFeatureSettings: '\"kern\", \"liga\", \"clig\", \"calt\"',\n msFontFeatureSettings: '\"kern\", \"liga\", \"clig\", \"calt\"',\n WebkitFontFeatureSettings: '\"kern\", \"liga\", \"clig\", \"calt\"',\n fontFeatureSettings: '\"kern\", \"liga\", \"clig\", \"calt\"'\n }), r = ao(r, \"img\", {\n maxWidth: \"100%\"\n });\n var o = \"\";\n o = $e(e.blockMarginBottom) ? t.rhythm(e.blockMarginBottom) : De(e.blockMarginBottom) ? e.blockMarginBottom : t.rhythm(1), r = ao(r, [\"h1\", \"h2\", \"h3\", \"h4\", \"h5\", \"h6\", \"hgroup\", \"ul\", \"ol\", \"dl\", \"dd\", \"p\", \"figure\", \"pre\", \"table\", \"fieldset\", \"blockquote\", \"form\", \"noscript\", \"iframe\", \"img\", \"hr\", \"address\"], {\n marginLeft: 0,\n marginRight: 0,\n marginTop: 0,\n paddingBottom: 0,\n paddingLeft: 0,\n paddingRight: 0,\n paddingTop: 0,\n marginBottom: o\n }), r = ao(r, \"blockquote\", {\n marginRight: t.rhythm(1),\n marginBottom: o,\n marginLeft: t.rhythm(1)\n }), r = ao(r, [\"b\", \"strong\", \"dt\", \"th\"], {\n fontWeight: e.boldWeight\n }), r = ao(r, \"hr\", {\n background: y(80),\n border: \"none\",\n height: \"1px\",\n marginBottom: \"calc(\" + o + \" - 1px)\"\n }), r = ao(r, [\"ol\", \"ul\"], {\n listStylePosition: \"outside\",\n listStyleImage: \"none\",\n marginLeft: t.rhythm(1)\n }), r = ao(r, \"li\", {\n marginBottom: \"calc(\" + o + \" / 2)\"\n }), r = ao(r, [\"ol li\", \"ul li\"], {\n paddingLeft: 0\n }), r = ao(r, [\"li > ol\", \"li > ul\"], {\n marginLeft: t.rhythm(1),\n marginBottom: \"calc(\" + o + \" / 2)\",\n marginTop: \"calc(\" + o + \" / 2)\"\n }), r = ao(r, [\"blockquote *:last-child\", \"li *:last-child\", \"p *:last-child\"], {\n marginBottom: 0\n }), r = ao(r, [\"li > p\"], {\n marginBottom: \"calc(\" + o + \" / 2)\"\n }), r = ao(r, [\"code\", \"kbd\", \"pre\", \"samp\"], Object.assign({}, t.adjustFontSizeTo(\"85%\"))), (r = ao(r, [\"abbr\", \"acronym\"], {\n borderBottom: \"1px dotted \" + y(50),\n cursor: \"help\"\n }))[\"abbr[title]\"] = {\n borderBottom: \"1px dotted \" + y(50),\n cursor: \"help\",\n textDecoration: \"none\"\n }, r = ao(r, [\"table\"], Object.assign({}, t.adjustFontSizeTo(e.baseFontSize), {\n borderCollapse: \"collapse\",\n width: \"100%\"\n })), r = ao(r, [\"thead\"], {\n textAlign: \"left\"\n }), r = ao(r, [\"td,th\"], {\n textAlign: \"left\",\n borderBottom: \"1px solid \" + y(88),\n fontFeatureSettings: '\"tnum\"',\n MozFontFeatureSettings: '\"tnum\"',\n msFontFeatureSettings: '\"tnum\"',\n WebkitFontFeatureSettings: '\"tnum\"',\n paddingLeft: t.rhythm(2 / 3),\n paddingRight: t.rhythm(2 / 3),\n paddingTop: t.rhythm(.5),\n paddingBottom: \"calc(\" + t.rhythm(.5) + \" - 1px)\"\n }), r = ao(r, \"th:first-child,td:first-child\", {\n paddingLeft: 0\n }), r = ao(r, \"th:last-child,td:last-child\", {\n paddingRight: 0\n }), r = ao(r, [\"h1\", \"h2\", \"h3\", \"h4\", \"h5\", \"h6\"], {\n color: e.headerColor,\n fontFamily: e.headerFontFamily.map(co).join(\",\"),\n fontWeight: e.headerWeight,\n textRendering: \"optimizeLegibility\"\n });\n var i = t.scale(1),\n a = t.scale(.6),\n u = t.scale(.4),\n c = t.scale(0),\n l = t.scale(-.2),\n f = t.scale(-.3);\n return Ie([i, a, u, c, l, f], function (t, n) {\n r = ue(r, \"h\" + (n + 1) + \".fontSize\", t.fontSize), r = ue(r, \"h\" + (n + 1) + \".lineHeight\", e.headerLineHeight);\n }), at(e.plugins) && (r = io(e.plugins, function (r, n) {\n return Er(r, n(t, e, r));\n }, r)), e.overrideStyles && $(e.overrideStyles) && (r = Er(r, e.overrideStyles(t, e, r))), e.overrideThemeStyles && $(e.overrideThemeStyles) && (r = Er(r, e.overrideThemeStyles(t, e, r))), r;\n }(d, l);\n },\n toString: function toString() {\n return function (t, e, r) {\n var n = po(r);\n return e.includeNormalize && (n = \"\" + so + n), n;\n }(0, l, this.toJSON());\n },\n injectStyles: function injectStyles() {\n if (\"undefined\" != typeof document) if (document.getElementById(\"typography.js\")) document.getElementById(\"typography.js\").innerHTML = this.toString();else {\n var t = document.createElement(\"style\");\n t.id = \"typography.js\", t.innerHTML = this.toString();\n var e = document.head;\n e.firstChild ? e.insertBefore(t, e.firstChild) : e.appendChild(t);\n }\n }\n });\n};","import Typography from 'typography'\nimport Wordpress2016 from 'typography-theme-wordpress-2016'\n\nimport './global.css'\n\nWordpress2016.overrideThemeStyles = () => {\n return {\n 'a.gatsby-resp-image-link': {\n boxShadow: `none`,\n },\n a: {\n color: 'var(--textLink)',\n },\n hr: {\n background: 'var(--hr)',\n },\n 'p code': {\n fontSize: '1.1rem',\n },\n 'h1 code, h2 code, h3 code, h4 code, h5 code, h6 code': {\n fontSize: 'inherit',\n },\n 'li code': {\n fontSize: '1.1rem',\n },\n blockquote: {\n color: 'inherit',\n borderLeftColor: 'inherit',\n opacity: '0.8',\n fontSize: '1.1rem',\n },\n }\n}\n\ndelete Wordpress2016.googleFonts\n\nconst typography = new Typography(Wordpress2016)\n\n// Hot reload typography in development.\nif (process.env.NODE_ENV !== `production`) {\n typography.injectStyles()\n}\n\nexport default typography\nexport const rhythm = typography.rhythm\nexport const scale = typography.scale\n","exports.__esModule = true;\nexports.warn = exports.requestAnimationFrame = exports.reducePropsToState = exports.mapStateOnServer = exports.handleClientStateChange = exports.convertReactPropstoHtmlAttributes = undefined;\n\nvar _typeof = typeof Symbol === \"function\" && typeof Symbol.iterator === \"symbol\" ? function (obj) {\n return typeof obj;\n} : function (obj) {\n return obj && typeof Symbol === \"function\" && obj.constructor === Symbol && obj !== Symbol.prototype ? \"symbol\" : typeof obj;\n};\n\nvar _extends = Object.assign || function (target) {\n for (var i = 1; i < arguments.length; i++) {\n var source = arguments[i];\n\n for (var key in source) {\n if (Object.prototype.hasOwnProperty.call(source, key)) {\n target[key] = source[key];\n }\n }\n }\n\n return target;\n};\n\nvar _react = require(\"react\");\n\nvar _react2 = _interopRequireDefault(_react);\n\nvar _objectAssign = require(\"object-assign\");\n\nvar _objectAssign2 = _interopRequireDefault(_objectAssign);\n\nvar _HelmetConstants = require(\"./HelmetConstants.js\");\n\nfunction _interopRequireDefault(obj) {\n return obj && obj.__esModule ? obj : {\n default: obj\n };\n}\n\nvar encodeSpecialCharacters = function encodeSpecialCharacters(str) {\n var encode = arguments.length > 1 && arguments[1] !== undefined ? arguments[1] : true;\n\n if (encode === false) {\n return String(str);\n }\n\n return String(str).replace(/&/g, \"&\").replace(//g, \">\").replace(/\"/g, \""\").replace(/'/g, \"'\");\n};\n\nvar getTitleFromPropsList = function getTitleFromPropsList(propsList) {\n var innermostTitle = getInnermostProperty(propsList, _HelmetConstants.TAG_NAMES.TITLE);\n var innermostTemplate = getInnermostProperty(propsList, _HelmetConstants.HELMET_PROPS.TITLE_TEMPLATE);\n\n if (innermostTemplate && innermostTitle) {\n // use function arg to avoid need to escape $ characters\n return innermostTemplate.replace(/%s/g, function () {\n return innermostTitle;\n });\n }\n\n var innermostDefaultTitle = getInnermostProperty(propsList, _HelmetConstants.HELMET_PROPS.DEFAULT_TITLE);\n return innermostTitle || innermostDefaultTitle || undefined;\n};\n\nvar getOnChangeClientState = function getOnChangeClientState(propsList) {\n return getInnermostProperty(propsList, _HelmetConstants.HELMET_PROPS.ON_CHANGE_CLIENT_STATE) || function () {};\n};\n\nvar getAttributesFromPropsList = function getAttributesFromPropsList(tagType, propsList) {\n return propsList.filter(function (props) {\n return typeof props[tagType] !== \"undefined\";\n }).map(function (props) {\n return props[tagType];\n }).reduce(function (tagAttrs, current) {\n return _extends({}, tagAttrs, current);\n }, {});\n};\n\nvar getBaseTagFromPropsList = function getBaseTagFromPropsList(primaryAttributes, propsList) {\n return propsList.filter(function (props) {\n return typeof props[_HelmetConstants.TAG_NAMES.BASE] !== \"undefined\";\n }).map(function (props) {\n return props[_HelmetConstants.TAG_NAMES.BASE];\n }).reverse().reduce(function (innermostBaseTag, tag) {\n if (!innermostBaseTag.length) {\n var keys = Object.keys(tag);\n\n for (var i = 0; i < keys.length; i++) {\n var attributeKey = keys[i];\n var lowerCaseAttributeKey = attributeKey.toLowerCase();\n\n if (primaryAttributes.indexOf(lowerCaseAttributeKey) !== -1 && tag[lowerCaseAttributeKey]) {\n return innermostBaseTag.concat(tag);\n }\n }\n }\n\n return innermostBaseTag;\n }, []);\n};\n\nvar getTagsFromPropsList = function getTagsFromPropsList(tagName, primaryAttributes, propsList) {\n // Calculate list of tags, giving priority innermost component (end of the propslist)\n var approvedSeenTags = {};\n return propsList.filter(function (props) {\n if (Array.isArray(props[tagName])) {\n return true;\n }\n\n if (typeof props[tagName] !== \"undefined\") {\n warn(\"Helmet: \" + tagName + \" should be of type \\\"Array\\\". Instead found type \\\"\" + _typeof(props[tagName]) + \"\\\"\");\n }\n\n return false;\n }).map(function (props) {\n return props[tagName];\n }).reverse().reduce(function (approvedTags, instanceTags) {\n var instanceSeenTags = {};\n instanceTags.filter(function (tag) {\n var primaryAttributeKey = void 0;\n var keys = Object.keys(tag);\n\n for (var i = 0; i < keys.length; i++) {\n var attributeKey = keys[i];\n var lowerCaseAttributeKey = attributeKey.toLowerCase(); // Special rule with link tags, since rel and href are both primary tags, rel takes priority\n\n if (primaryAttributes.indexOf(lowerCaseAttributeKey) !== -1 && !(primaryAttributeKey === _HelmetConstants.TAG_PROPERTIES.REL && tag[primaryAttributeKey].toLowerCase() === \"canonical\") && !(lowerCaseAttributeKey === _HelmetConstants.TAG_PROPERTIES.REL && tag[lowerCaseAttributeKey].toLowerCase() === \"stylesheet\")) {\n primaryAttributeKey = lowerCaseAttributeKey;\n } // Special case for innerHTML which doesn't work lowercased\n\n\n if (primaryAttributes.indexOf(attributeKey) !== -1 && (attributeKey === _HelmetConstants.TAG_PROPERTIES.INNER_HTML || attributeKey === _HelmetConstants.TAG_PROPERTIES.CSS_TEXT || attributeKey === _HelmetConstants.TAG_PROPERTIES.ITEM_PROP)) {\n primaryAttributeKey = attributeKey;\n }\n }\n\n if (!primaryAttributeKey || !tag[primaryAttributeKey]) {\n return false;\n }\n\n var value = tag[primaryAttributeKey].toLowerCase();\n\n if (!approvedSeenTags[primaryAttributeKey]) {\n approvedSeenTags[primaryAttributeKey] = {};\n }\n\n if (!instanceSeenTags[primaryAttributeKey]) {\n instanceSeenTags[primaryAttributeKey] = {};\n }\n\n if (!approvedSeenTags[primaryAttributeKey][value]) {\n instanceSeenTags[primaryAttributeKey][value] = true;\n return true;\n }\n\n return false;\n }).reverse().forEach(function (tag) {\n return approvedTags.push(tag);\n }); // Update seen tags with tags from this instance\n\n var keys = Object.keys(instanceSeenTags);\n\n for (var i = 0; i < keys.length; i++) {\n var attributeKey = keys[i];\n var tagUnion = (0, _objectAssign2.default)({}, approvedSeenTags[attributeKey], instanceSeenTags[attributeKey]);\n approvedSeenTags[attributeKey] = tagUnion;\n }\n\n return approvedTags;\n }, []).reverse();\n};\n\nvar getInnermostProperty = function getInnermostProperty(propsList, property) {\n for (var i = propsList.length - 1; i >= 0; i--) {\n var props = propsList[i];\n\n if (props.hasOwnProperty(property)) {\n return props[property];\n }\n }\n\n return null;\n};\n\nvar reducePropsToState = function reducePropsToState(propsList) {\n return {\n baseTag: getBaseTagFromPropsList([_HelmetConstants.TAG_PROPERTIES.HREF], propsList),\n bodyAttributes: getAttributesFromPropsList(_HelmetConstants.ATTRIBUTE_NAMES.BODY, propsList),\n defer: getInnermostProperty(propsList, _HelmetConstants.HELMET_PROPS.DEFER),\n encode: getInnermostProperty(propsList, _HelmetConstants.HELMET_PROPS.ENCODE_SPECIAL_CHARACTERS),\n htmlAttributes: getAttributesFromPropsList(_HelmetConstants.ATTRIBUTE_NAMES.HTML, propsList),\n linkTags: getTagsFromPropsList(_HelmetConstants.TAG_NAMES.LINK, [_HelmetConstants.TAG_PROPERTIES.REL, _HelmetConstants.TAG_PROPERTIES.HREF], propsList),\n metaTags: getTagsFromPropsList(_HelmetConstants.TAG_NAMES.META, [_HelmetConstants.TAG_PROPERTIES.NAME, _HelmetConstants.TAG_PROPERTIES.CHARSET, _HelmetConstants.TAG_PROPERTIES.HTTPEQUIV, _HelmetConstants.TAG_PROPERTIES.PROPERTY, _HelmetConstants.TAG_PROPERTIES.ITEM_PROP], propsList),\n noscriptTags: getTagsFromPropsList(_HelmetConstants.TAG_NAMES.NOSCRIPT, [_HelmetConstants.TAG_PROPERTIES.INNER_HTML], propsList),\n onChangeClientState: getOnChangeClientState(propsList),\n scriptTags: getTagsFromPropsList(_HelmetConstants.TAG_NAMES.SCRIPT, [_HelmetConstants.TAG_PROPERTIES.SRC, _HelmetConstants.TAG_PROPERTIES.INNER_HTML], propsList),\n styleTags: getTagsFromPropsList(_HelmetConstants.TAG_NAMES.STYLE, [_HelmetConstants.TAG_PROPERTIES.CSS_TEXT], propsList),\n title: getTitleFromPropsList(propsList),\n titleAttributes: getAttributesFromPropsList(_HelmetConstants.ATTRIBUTE_NAMES.TITLE, propsList)\n };\n};\n\nvar rafPolyfill = function () {\n var clock = Date.now();\n return function (callback) {\n var currentTime = Date.now();\n\n if (currentTime - clock > 16) {\n clock = currentTime;\n callback(currentTime);\n } else {\n setTimeout(function () {\n rafPolyfill(callback);\n }, 0);\n }\n };\n}();\n\nvar cafPolyfill = function cafPolyfill(id) {\n return clearTimeout(id);\n};\n\nvar requestAnimationFrame = typeof window !== \"undefined\" ? window.requestAnimationFrame || window.webkitRequestAnimationFrame || window.mozRequestAnimationFrame || rafPolyfill : global.requestAnimationFrame || rafPolyfill;\nvar cancelAnimationFrame = typeof window !== \"undefined\" ? window.cancelAnimationFrame || window.webkitCancelAnimationFrame || window.mozCancelAnimationFrame || cafPolyfill : global.cancelAnimationFrame || cafPolyfill;\n\nvar warn = function warn(msg) {\n return console && typeof console.warn === \"function\" && console.warn(msg);\n};\n\nvar _helmetCallback = null;\n\nvar handleClientStateChange = function handleClientStateChange(newState) {\n if (_helmetCallback) {\n cancelAnimationFrame(_helmetCallback);\n }\n\n if (newState.defer) {\n _helmetCallback = requestAnimationFrame(function () {\n commitTagChanges(newState, function () {\n _helmetCallback = null;\n });\n });\n } else {\n commitTagChanges(newState);\n _helmetCallback = null;\n }\n};\n\nvar commitTagChanges = function commitTagChanges(newState, cb) {\n var baseTag = newState.baseTag,\n bodyAttributes = newState.bodyAttributes,\n htmlAttributes = newState.htmlAttributes,\n linkTags = newState.linkTags,\n metaTags = newState.metaTags,\n noscriptTags = newState.noscriptTags,\n onChangeClientState = newState.onChangeClientState,\n scriptTags = newState.scriptTags,\n styleTags = newState.styleTags,\n title = newState.title,\n titleAttributes = newState.titleAttributes;\n updateAttributes(_HelmetConstants.TAG_NAMES.BODY, bodyAttributes);\n updateAttributes(_HelmetConstants.TAG_NAMES.HTML, htmlAttributes);\n updateTitle(title, titleAttributes);\n var tagUpdates = {\n baseTag: updateTags(_HelmetConstants.TAG_NAMES.BASE, baseTag),\n linkTags: updateTags(_HelmetConstants.TAG_NAMES.LINK, linkTags),\n metaTags: updateTags(_HelmetConstants.TAG_NAMES.META, metaTags),\n noscriptTags: updateTags(_HelmetConstants.TAG_NAMES.NOSCRIPT, noscriptTags),\n scriptTags: updateTags(_HelmetConstants.TAG_NAMES.SCRIPT, scriptTags),\n styleTags: updateTags(_HelmetConstants.TAG_NAMES.STYLE, styleTags)\n };\n var addedTags = {};\n var removedTags = {};\n Object.keys(tagUpdates).forEach(function (tagType) {\n var _tagUpdates$tagType = tagUpdates[tagType],\n newTags = _tagUpdates$tagType.newTags,\n oldTags = _tagUpdates$tagType.oldTags;\n\n if (newTags.length) {\n addedTags[tagType] = newTags;\n }\n\n if (oldTags.length) {\n removedTags[tagType] = tagUpdates[tagType].oldTags;\n }\n });\n cb && cb();\n onChangeClientState(newState, addedTags, removedTags);\n};\n\nvar flattenArray = function flattenArray(possibleArray) {\n return Array.isArray(possibleArray) ? possibleArray.join(\"\") : possibleArray;\n};\n\nvar updateTitle = function updateTitle(title, attributes) {\n if (typeof title !== \"undefined\" && document.title !== title) {\n document.title = flattenArray(title);\n }\n\n updateAttributes(_HelmetConstants.TAG_NAMES.TITLE, attributes);\n};\n\nvar updateAttributes = function updateAttributes(tagName, attributes) {\n var elementTag = document.getElementsByTagName(tagName)[0];\n\n if (!elementTag) {\n return;\n }\n\n var helmetAttributeString = elementTag.getAttribute(_HelmetConstants.HELMET_ATTRIBUTE);\n var helmetAttributes = helmetAttributeString ? helmetAttributeString.split(\",\") : [];\n var attributesToRemove = [].concat(helmetAttributes);\n var attributeKeys = Object.keys(attributes);\n\n for (var i = 0; i < attributeKeys.length; i++) {\n var attribute = attributeKeys[i];\n var value = attributes[attribute] || \"\";\n\n if (elementTag.getAttribute(attribute) !== value) {\n elementTag.setAttribute(attribute, value);\n }\n\n if (helmetAttributes.indexOf(attribute) === -1) {\n helmetAttributes.push(attribute);\n }\n\n var indexToSave = attributesToRemove.indexOf(attribute);\n\n if (indexToSave !== -1) {\n attributesToRemove.splice(indexToSave, 1);\n }\n }\n\n for (var _i = attributesToRemove.length - 1; _i >= 0; _i--) {\n elementTag.removeAttribute(attributesToRemove[_i]);\n }\n\n if (helmetAttributes.length === attributesToRemove.length) {\n elementTag.removeAttribute(_HelmetConstants.HELMET_ATTRIBUTE);\n } else if (elementTag.getAttribute(_HelmetConstants.HELMET_ATTRIBUTE) !== attributeKeys.join(\",\")) {\n elementTag.setAttribute(_HelmetConstants.HELMET_ATTRIBUTE, attributeKeys.join(\",\"));\n }\n};\n\nvar updateTags = function updateTags(type, tags) {\n var headElement = document.head || document.querySelector(_HelmetConstants.TAG_NAMES.HEAD);\n var tagNodes = headElement.querySelectorAll(type + \"[\" + _HelmetConstants.HELMET_ATTRIBUTE + \"]\");\n var oldTags = Array.prototype.slice.call(tagNodes);\n var newTags = [];\n var indexToDelete = void 0;\n\n if (tags && tags.length) {\n tags.forEach(function (tag) {\n var newElement = document.createElement(type);\n\n for (var attribute in tag) {\n if (tag.hasOwnProperty(attribute)) {\n if (attribute === _HelmetConstants.TAG_PROPERTIES.INNER_HTML) {\n newElement.innerHTML = tag.innerHTML;\n } else if (attribute === _HelmetConstants.TAG_PROPERTIES.CSS_TEXT) {\n if (newElement.styleSheet) {\n newElement.styleSheet.cssText = tag.cssText;\n } else {\n newElement.appendChild(document.createTextNode(tag.cssText));\n }\n } else {\n var value = typeof tag[attribute] === \"undefined\" ? \"\" : tag[attribute];\n newElement.setAttribute(attribute, value);\n }\n }\n }\n\n newElement.setAttribute(_HelmetConstants.HELMET_ATTRIBUTE, \"true\"); // Remove a duplicate tag from domTagstoRemove, so it isn't cleared.\n\n if (oldTags.some(function (existingTag, index) {\n indexToDelete = index;\n return newElement.isEqualNode(existingTag);\n })) {\n oldTags.splice(indexToDelete, 1);\n } else {\n newTags.push(newElement);\n }\n });\n }\n\n oldTags.forEach(function (tag) {\n return tag.parentNode.removeChild(tag);\n });\n newTags.forEach(function (tag) {\n return headElement.appendChild(tag);\n });\n return {\n oldTags: oldTags,\n newTags: newTags\n };\n};\n\nvar generateElementAttributesAsString = function generateElementAttributesAsString(attributes) {\n return Object.keys(attributes).reduce(function (str, key) {\n var attr = typeof attributes[key] !== \"undefined\" ? key + \"=\\\"\" + attributes[key] + \"\\\"\" : \"\" + key;\n return str ? str + \" \" + attr : attr;\n }, \"\");\n};\n\nvar generateTitleAsString = function generateTitleAsString(type, title, attributes, encode) {\n var attributeString = generateElementAttributesAsString(attributes);\n var flattenedTitle = flattenArray(title);\n return attributeString ? \"<\" + type + \" \" + _HelmetConstants.HELMET_ATTRIBUTE + \"=\\\"true\\\" \" + attributeString + \">\" + encodeSpecialCharacters(flattenedTitle, encode) + \"\" : \"<\" + type + \" \" + _HelmetConstants.HELMET_ATTRIBUTE + \"=\\\"true\\\">\" + encodeSpecialCharacters(flattenedTitle, encode) + \"\";\n};\n\nvar generateTagsAsString = function generateTagsAsString(type, tags, encode) {\n return tags.reduce(function (str, tag) {\n var attributeHtml = Object.keys(tag).filter(function (attribute) {\n return !(attribute === _HelmetConstants.TAG_PROPERTIES.INNER_HTML || attribute === _HelmetConstants.TAG_PROPERTIES.CSS_TEXT);\n }).reduce(function (string, attribute) {\n var attr = typeof tag[attribute] === \"undefined\" ? attribute : attribute + \"=\\\"\" + encodeSpecialCharacters(tag[attribute], encode) + \"\\\"\";\n return string ? string + \" \" + attr : attr;\n }, \"\");\n var tagContent = tag.innerHTML || tag.cssText || \"\";\n var isSelfClosing = _HelmetConstants.SELF_CLOSING_TAGS.indexOf(type) === -1;\n return str + \"<\" + type + \" \" + _HelmetConstants.HELMET_ATTRIBUTE + \"=\\\"true\\\" \" + attributeHtml + (isSelfClosing ? \"/>\" : \">\" + tagContent + \"\");\n }, \"\");\n};\n\nvar convertElementAttributestoReactProps = function convertElementAttributestoReactProps(attributes) {\n var initProps = arguments.length > 1 && arguments[1] !== undefined ? arguments[1] : {};\n return Object.keys(attributes).reduce(function (obj, key) {\n obj[_HelmetConstants.REACT_TAG_MAP[key] || key] = attributes[key];\n return obj;\n }, initProps);\n};\n\nvar convertReactPropstoHtmlAttributes = function convertReactPropstoHtmlAttributes(props) {\n var initAttributes = arguments.length > 1 && arguments[1] !== undefined ? arguments[1] : {};\n return Object.keys(props).reduce(function (obj, key) {\n obj[_HelmetConstants.HTML_TAG_MAP[key] || key] = props[key];\n return obj;\n }, initAttributes);\n};\n\nvar generateTitleAsReactComponent = function generateTitleAsReactComponent(type, title, attributes) {\n var _initProps; // assigning into an array to define toString function on it\n\n\n var initProps = (_initProps = {\n key: title\n }, _initProps[_HelmetConstants.HELMET_ATTRIBUTE] = true, _initProps);\n var props = convertElementAttributestoReactProps(attributes, initProps);\n return [_react2.default.createElement(_HelmetConstants.TAG_NAMES.TITLE, props, title)];\n};\n\nvar generateTagsAsReactComponent = function generateTagsAsReactComponent(type, tags) {\n return tags.map(function (tag, i) {\n var _mappedTag;\n\n var mappedTag = (_mappedTag = {\n key: i\n }, _mappedTag[_HelmetConstants.HELMET_ATTRIBUTE] = true, _mappedTag);\n Object.keys(tag).forEach(function (attribute) {\n var mappedAttribute = _HelmetConstants.REACT_TAG_MAP[attribute] || attribute;\n\n if (mappedAttribute === _HelmetConstants.TAG_PROPERTIES.INNER_HTML || mappedAttribute === _HelmetConstants.TAG_PROPERTIES.CSS_TEXT) {\n var content = tag.innerHTML || tag.cssText;\n mappedTag.dangerouslySetInnerHTML = {\n __html: content\n };\n } else {\n mappedTag[mappedAttribute] = tag[attribute];\n }\n });\n return _react2.default.createElement(type, mappedTag);\n });\n};\n\nvar getMethodsForTag = function getMethodsForTag(type, tags, encode) {\n switch (type) {\n case _HelmetConstants.TAG_NAMES.TITLE:\n return {\n toComponent: function toComponent() {\n return generateTitleAsReactComponent(type, tags.title, tags.titleAttributes, encode);\n },\n toString: function toString() {\n return generateTitleAsString(type, tags.title, tags.titleAttributes, encode);\n }\n };\n\n case _HelmetConstants.ATTRIBUTE_NAMES.BODY:\n case _HelmetConstants.ATTRIBUTE_NAMES.HTML:\n return {\n toComponent: function toComponent() {\n return convertElementAttributestoReactProps(tags);\n },\n toString: function toString() {\n return generateElementAttributesAsString(tags);\n }\n };\n\n default:\n return {\n toComponent: function toComponent() {\n return generateTagsAsReactComponent(type, tags);\n },\n toString: function toString() {\n return generateTagsAsString(type, tags, encode);\n }\n };\n }\n};\n\nvar mapStateOnServer = function mapStateOnServer(_ref) {\n var baseTag = _ref.baseTag,\n bodyAttributes = _ref.bodyAttributes,\n encode = _ref.encode,\n htmlAttributes = _ref.htmlAttributes,\n linkTags = _ref.linkTags,\n metaTags = _ref.metaTags,\n noscriptTags = _ref.noscriptTags,\n scriptTags = _ref.scriptTags,\n styleTags = _ref.styleTags,\n _ref$title = _ref.title,\n title = _ref$title === undefined ? \"\" : _ref$title,\n titleAttributes = _ref.titleAttributes;\n return {\n base: getMethodsForTag(_HelmetConstants.TAG_NAMES.BASE, baseTag, encode),\n bodyAttributes: getMethodsForTag(_HelmetConstants.ATTRIBUTE_NAMES.BODY, bodyAttributes, encode),\n htmlAttributes: getMethodsForTag(_HelmetConstants.ATTRIBUTE_NAMES.HTML, htmlAttributes, encode),\n link: getMethodsForTag(_HelmetConstants.TAG_NAMES.LINK, linkTags, encode),\n meta: getMethodsForTag(_HelmetConstants.TAG_NAMES.META, metaTags, encode),\n noscript: getMethodsForTag(_HelmetConstants.TAG_NAMES.NOSCRIPT, noscriptTags, encode),\n script: getMethodsForTag(_HelmetConstants.TAG_NAMES.SCRIPT, scriptTags, encode),\n style: getMethodsForTag(_HelmetConstants.TAG_NAMES.STYLE, styleTags, encode),\n title: getMethodsForTag(_HelmetConstants.TAG_NAMES.TITLE, {\n title: title,\n titleAttributes: titleAttributes\n }, encode)\n };\n};\n\nexports.convertReactPropstoHtmlAttributes = convertReactPropstoHtmlAttributes;\nexports.handleClientStateChange = handleClientStateChange;\nexports.mapStateOnServer = mapStateOnServer;\nexports.reducePropsToState = reducePropsToState;\nexports.requestAnimationFrame = requestAnimationFrame;\nexports.warn = warn;","/**\n * SEO component that queries for data with\n * Gatsby's useStaticQuery React hook\n *\n * See: https://www.gatsbyjs.org/docs/use-static-query/\n */\n\nimport React from 'react'\nimport PropTypes from 'prop-types'\nimport Helmet from 'react-helmet'\nimport { useStaticQuery, graphql } from 'gatsby'\n\nfunction SEO({\n image,\n slug,\n description,\n lang = 'zh-Hans',\n meta,\n keywords,\n title,\n}) {\n const { site } = useStaticQuery(\n graphql`\n query {\n site {\n siteMetadata {\n title\n author\n description\n siteUrl\n social {\n twitter\n }\n }\n }\n }\n `\n )\n\n const siteMetadata = site.siteMetadata\n const metaDescription = description || siteMetadata.description\n const metaImage = image ? `${siteMetadata.siteUrl}/${image}` : null\n const url = `${siteMetadata.siteUrl}${slug}`\n\n return (\n 0\n ? {\n name: `keywords`,\n content: keywords.join(`, `),\n }\n : []\n )\n .concat(meta)}\n />\n )\n}\n\nSEO.defaultProps = {\n meta: [],\n keywords: [],\n description: ``,\n}\n\nSEO.propTypes = {\n description: PropTypes.string,\n lang: PropTypes.string,\n meta: PropTypes.arrayOf(PropTypes.object),\n keywords: PropTypes.arrayOf(PropTypes.string),\n title: PropTypes.string.isRequired,\n}\n\nexport default SEO\n","var g;\n\n// This works in non-strict mode\ng = (function() {\n\treturn this;\n})();\n\ntry {\n\t// This works if eval is allowed (see CSP)\n\tg = g || new Function(\"return this\")();\n} catch (e) {\n\t// This works if the window reference is available\n\tif (typeof window === \"object\") g = window;\n}\n\n// g can still be undefined, but nothing to do about it...\n// We return undefined, instead of nothing here, so it's\n// easier to handle this case. if(!global) { ...}\n\nmodule.exports = g;\n"],"sourceRoot":""} \ No newline at end of file diff --git a/exploring-npm/index.html b/exploring-npm/index.html new file mode 100644 index 0000000..b8e774b --- /dev/null +++ b/exploring-npm/index.html @@ -0,0 +1,283 @@ +exploring npm | Cube Blog

Cube Blog

exploring npm

July 05, 2019 • ☕️☕️ 11 min read

npm 是目前默认的 Node 包管理工具，在 javaScript 项目开发中得到了广泛使用。

node_modules

npm 使用 npm install 命令安装模块到node_modules 目录下。

npm install <packageName>

+
node_modules 路径查找机制：默认情况下，模块查找对应的依赖包时，nodejs 会尝试从当前模块所在的目录开始，尝试在它的 node_modules 文件夹里加载相应的模块，如果没有找到，那么就再向上一级目录移动，直到到达全局安装路径中的 node_modules 为止。
+

npm 5.x 安装组织 node_modules

+
扁平化安装
+
按照 package.json 里依赖的顺序依次解析，遇到新的包就将其安装在第一级目录，后续安装时如果遇到一级目录已经存在的包，会按照约定版本进行判断。如果符合版本约定就会忽略，否则会将其依次安装在依赖包的目录下。
+
+
增加了 package-lock.json 文件
+
用以精确描述 node_modules 目录下所有的包的树状依赖结构，每个包的版本号都是完全精确的。
+
```
"glob": {
+"version": "7.1.3",
+"resolved": "https://registry.npmjs.org/glob/-/glob-7.1.3.tgz",
+"integrity": "sha512-vcfuiIxogLV4DlGBHIUOwI0IbrJ8HWPc4MU7HzviGeNho/UJDfi6B5p3sHeWIQ0KGIU0Jpxi5ZHxemQfLkkAwQ==",
+"requires": {
+  "fs.realpath": "^1.0.0",
+  "inflight": "^1.0.4",
+  "inherits": "2",
+  "minimatch": "^3.0.4",
+  "once": "^1.3.0",
+  "path-is-absolute": "^1.0.0"
+}
+}
```
+
以 glob 为例，package-lock.json 主要由以下几个字段进行描述：
+
- version 包唯一的版本号
- resolved 安装源
- integrity hash 值，表明包的完整性，用来验证包是否已经失效
- dev 如果为true，则此依赖关系仅是顶级模块的开发依赖关系或者是一个的传递依赖关系
- requires 该依赖包所需要的依赖项
+

依赖包

依赖包的分类

+
dependencies 业务依赖
+
依赖项属于线上的一部分，例如 react、material-ui 等等，供生产环境使用。
+
```
npm [install|-i] <packageName> [--save|-S]
```
+
+
npm 5.x 之后，直接执行 npm i <packageName> 即可
+
+
+
devDependencies 开发依赖
+
依赖项只在项目开发时需要，不属于线上代码的一部分，例如 webpack、babel 等等
+
```
npm [install|-i] <packageName> [--save-dev|-D]
```
+
+
peerDependencies 同伴依赖
+
提示宿主环境安装插件在 peerDependencies 中指定依赖的包。
+
+
bundledDependencies / bundleDependencies 打包依赖
+
这种依赖跟 npm pack 打包命令相关，必须先在前两种依赖中声明。
+
optionalDependencies 可选依赖

依赖包的版本号

采用 semver 规范作为依赖版本管理方案，格式一般为：主版本号.次版本号.修订号(x.y.z)

+
主版本号 major version
+
可能是颠覆性的改动，导致可能会与低版本的 API 或者用法不兼容。
+
+
次版本号 minor version
+
改动通常兼容同一个大版本内的 API 和用法。
+
+
如果大版本号是 0，表示处于开发初始阶段，一切都可能被改变。
+
+
+
修订号 patch
+
一般用于修复 bug 和细微的变更，通常要保持向前兼容。
+

常见的版本格式：

”1.2.3” 精确版本号
“^1.2.3” ^ 能够兼容除了最左侧非 0 版本号之外的其他变化
“~1.2.3” ~ 如果列出了次版本号，那么只兼容补丁的修改；如果没有列出次版本号，那么兼容 2、3 位的修改
+
“1.x”、“1.X”、“1.”、“1”、“\”
+
+
”*” 、“x” 或者（空）表示可以匹配任何版本。
+
“1.x”, “1.*” 和 “1” 表示匹配主版本号为 “1” 的所有版本，因此等价于 ”>= 1.0.0 < 2.0.0”。
+
“1.2.x”, “1.2.*” 和 “1.2” 表示匹配版本号以 “1.2” 开头的所有版本，因此等价于 ”>= 1.2.0 < 1.3.0”。
+
+
+
带预发布关键词的版本号
+
+
alpha(α)：预览版，或者叫内部测试版；一般不向外部发布，会有很多bug；一般只有测试人员使用。 beta(β)：测试版，或者叫公开测试版；这个阶段的版本会一直加入新的功能；在alpha版之后推出。 rc(release candidate)：最终测试版本；可能成为最终产品的候选版本，如果未出现问题则可发布成为正式版本。
+
+

依赖包的版本管理

# 更新某模块主版本下的最新版本
+npm install <packageName>
+
+# 更新到指定版本号
+npm install <packageName@x.x.x>
+
+# 卸载某个模块
+npm uninstall <packageName>

+
升级和卸载依赖包时，尽量通过命令实现，避免手动修改 package.json 中的版本号，一定不要手动修改 package-lock.json
+

npm scripts 脚本

npm 可以在 package.json 文件中，使用 scripts 字段定义脚本命令。

{
+  "scripts": {
+    "build": "node build.js"
+  }
+}

基本原理

每次执行 npm run 时，会自动新建一个 Shell，在这个 Shell 中执行指定的脚本命令。

+
npm run 新建的 Shell，会将当前目录中的 node_modules/.bin 子目录加入 PATH 变量中，执行结束后再将 PATH 变量恢复原样。
+

因此，当前目录的 node_modules/.bin 子目录中的所有脚本，都可以直接使用脚本名调用，而不需要加上路径。

+
PATH环境变量，是告诉系统，当要求系统运行一个程序而没有告诉它程序所在的完整路径时，系统除了在当前目录下面寻找此程序外，还应到哪些目录下去寻找。
+

传参

除了第一个可执行的命令，以空格分割的任何字符串（除了一些 shell 的语法）都是参数，并且都能通过process.argv 属性访问。

+
process.argv属性返回一个数组，这个数组包含了启动node进程时的命令行参数。第一个元素为启动node 进程的可执行文件的绝对路径名process.execPath，第二个元素为当前执行的JavaScript文件路径。剩余的元素为其他命令行参数。
+

npm run serve --params     # 参数params将转化成process.env.npm_config_params = true
+npm run serve --params=123 # 参数params将转化成process.env.npm_config_params = 123
+npm run serve -params      # 等同于--params参数
+
+npm run serve -- --params  # 将--params参数添加到process.env.argv数组中
+npm run serve params       # 将params参数添加到process.env.argv数组中
+npm run serve -- params    # 将params参数添加到process.env.argv数组中

通配符

npm 脚本即 Shell 脚本，所以可以使用 Shell 通配符。

"lint": "jshint *.js"
+"lint": "jshint **/*.js"

* 表示任意文件名，** 表示任意一层子目录。

多命令运行

串行执行

npm run script1 && npm run script2

+
只要一个命令执行失败，则整个脚本终止。
+

并行执行

多个任务可以同时的平行执行，使用 & 符号来连接。

npm run script1 & npm run script2

env 环境变量

执行 npm scripts 时，npm 会设置一些特殊的 env 环境变量。package.json 中的所有字段都会被设置为以 npm_package_ 开头的环境变量。例如使用 process.env.npm_package_name 可以获取到 package.json 中 name 字段的值。process.env.npm_lifecycle_event 表示当前正在运行的脚本名称。

+
这些环境变量都只能在 npm run 的脚本执行环境内拿到。
+

指令钩子

npm 脚本有 pre 和 post 两个钩子。例如：build 脚本命令的钩子就是 prebuild 和 postbuild。

在执行 npm run build 命令时，就会依次执行 npm run prebuild、npm run build、npm run postbuild。

可以结合 process.env.npm_lifecycle_event 一起使用。

npm 配置项

优先级

Command Line
env 环境变量
+
npmrc 文件
+
- 项目级
+
只作用在本项目下，其他项目中不生效。
+
- 用户级
+
~/.npmrc 使用 npm config get userconfig 可以查看存放的路径。
+
- 全局级
+
$PREFIX/etc/npmrc 使用 npm config get globalconfig 可以查看存放的路径。
+

npm config 指令

# 如果 key 不存在，那么会将新增到配置中；如果省略 value，那么会将 key 设置为 true
+npm config set <key> <value> [-g|--global]
+
+# 指定 npm 包来源
+npm config set registry <url>

npm config get <key>

delete

npm config delete <key> # 不能删除项目级的 .npmrc 文件里的配置项

list

npm config list [-l|--json] # 查看所有配置项

edit

npm config edit [-g|--global] # 编辑器中打开配置文件

更多默认配置参见npm config

npm 工程管理

项目版本号管理

package.json 中的 version 字段代表的是该项目的版本号。

尽量使用 npm version 指令来自动更新 version

npm version (v)1.2.3  # 显示设置版本号为 1.2.3 
+npm version major  # 大版本号加 1，其余版本号归 0
+npm version minor  # 小版本号加 1，修订号归 0
+npm version patch  # 修订号加 1

还可以创建预发布版本：

# 当前版本号为 1.2.3
+npm version prepatch  # 版本号变为 1.2.4-0，也就是 1.2.4 版本的第一个预发布版本
+npm version preminor  # 版本号变为 1.3.0-0，也就是 1.3.0 版本的第一个预发布版本
+npm version premajor  # 版本号变为 2.0.0-0，也就是 2.0.0 版本的第一个预发布版本
+npm version prerelease  # 版本号变为 2.0.0-1，也就是使预发布版本号加一

在 git 环境中，执行 npm version 修改版本号之后，还会默认执行 git add -> git commit -> git tag 操作

其 commit message 默认是自动修改完成的版本号，可以通过添加 -m/—message 选项来自定义 commit message：

npm version minor -m "feat(version): upgrade to %s for reasons" # %s 会自动替换为新版本号

如果不想在 git 仓库中打上版本 tag，可以在指令中使用 --no-git-tag-version

如果想默认不影响 git 仓库，可以在 npm 设置中禁止：

npm config set git-tag-version false # 不自动打 tag
+npm config set commit-hooks false    # 不自动 commit

域级包管理

package.json 中的依赖有两种形式：

"devDependencies": {
+  "@commitlint/cli": "^7.2.1",
+  "commitizen": "^3.0.4"
+}

以 @ 开头的包名，是一个域级包，作用是将一些 packages 集中在一个命名空间下，一方面可以集中管理，另一方面也可以防止与其他依赖包产生命名冲突。

域级包的发布

在项目的 package.json 的 name 属性中添加 scope 相关的声明，可以通过指令添加：

npm init --scope=scopeName -y

package.json 变为：

{
+  "name": "@scopeName/package"
+}

由于用 @ 声明了该包，npm 会将其认定为私有包，而在 npm 上托管私有包需要收费，所以可以在发布时添加--access=public 参数告知 npm 这不是私有包。

npm publish --access=public

+
安装域级包时需要按照域级包全名来安装。
+

其它

模块全局化

假设你在开发一个模块 A，同时需要在另外一个项目 B 中测试它，当然你可以将该模块的代码拷贝到需要使用它的项目中，但这也不是理想的方法，可以在模块 A 的目录下执行：

npm link

npm link 命令通过链接目录和可执行文件，实现任意位置的npm包命令的全局可执行。

npm link 主要做了两件事：

为目标 npm 模块创建软链接，将其链接到全局 node 模块安装路径 /usr/local/lib/node_modules/
为目标 npm模块的可执行 bin 文件创建软链接，将其链接到全局 node 命令安装路径 /usr/local/bin/

依赖锁定

npm 默认安装模块时，会通过脱字符 ^ 来限定所安装模块的主版本号。可以配置 npm 通过波浪符 ~ 来限定安装模块版本号：

npm config set save-prefix="~"

也可以配置仅安装精确版本号的模块

npm config set save-exact true

参考

这个博客用于记录我个人所读所思所想，前端开发相关。

\ No newline at end of file diff --git a/favicon-32x32.png b/favicon-32x32.png new file mode 100644 index 0000000..6b649a2 Binary files /dev/null and b/favicon-32x32.png differ diff --git a/static/favicon.ico b/favicon.ico similarity index 100% rename from static/favicon.ico rename to favicon.ico diff --git a/fd4eb4c15ee96cda391cb869122a6b3e/terms-grid-area-9036ea4e-c8bf-41e9-9681-fb9a8e04c11b.svg b/fd4eb4c15ee96cda391cb869122a6b3e/terms-grid-area-9036ea4e-c8bf-41e9-9681-fb9a8e04c11b.svg new file mode 100755 index 0000000..7249ca3 --- /dev/null +++ b/fd4eb4c15ee96cda391cb869122a6b3e/terms-grid-area-9036ea4e-c8bf-41e9-9681-fb9a8e04c11b.svg @@ -0,0 +1 @@ + \ No newline at end of file diff --git a/flex-box/index.html b/flex-box/index.html new file mode 100644 index 0000000..e05aaf9 --- /dev/null +++ b/flex-box/index.html @@ -0,0 +1,84 @@ +Flexbox 布局 | Cube Blog

Cube Blog

Flexbox 布局

May 16, 2019 • ☕️ 2 min read

Flex 是 Flexible Box 的缩写，意为弹性布局。Flex 布局适用于应用程序的组件和小规模布局。

基本概念

采用 Flex 布局的元素称为 flex 容器（flex container），而其子元素则称为 flex 项目（flex items）。

+ +

flex box

容器中有两根轴，分别是主轴（main axis）和交叉轴（cross axis）。

项目默认沿着主轴排列，一个项目占据的主轴空间为 main size，占据的交叉轴空间为 cross size。

容器属性

+
flex-direction 决定主轴的方向
+
- row（默认值）：水平，从左到右
- row-reverse：水平，从右往左
- column：垂直，从上到下
- column-reverse：垂直，从下往上
+
+
flex-wrap 决定当一条轴线排不下时，如何换行
+
- nowrap：不换行
- wrap：换行，顺序从上到下
- wrap-reverse：换行，从下往上（即第一行在下） +
+
+
flex-flow 为 flex-direction 和 flex-wrap 的合并形式
+
```
flex-flow: <'flex-direction> || <'flex-wrap'>
```
+
默认值是 row nowrap
+
+
justify-content 定义项目在主轴上的对齐方式
+
- flex-start：左对齐
- flex-end：右对齐
- center：居中
- space-between：两端对齐，flex-item 之间的间距相等
- space-around：每个 flex-item 两侧间隔相等，则项目之间的间隔是与边框间隔的两倍。
+
+
align-items 定义项目在交叉轴上如何对齐
+
- flex-start：交叉轴起点对齐
- flex-end：交叉轴终点对齐
- center：交叉轴中点对齐
- baseline：项目的第一行文字的基线对齐
- stretch（默认值）：项目将拉伸撑满整个容器
+
+
align-content 定义多根轴线的对齐方式
+
- flex-start：与交叉轴起点对齐
- flex-end：与交叉轴终点对齐
- center：与交叉轴的中点对齐
- space-between：与交叉轴两端对齐，轴线之间间隔平均分布
- space-around：每根轴线两侧的间隔都相等
- stretch（默认值）：轴线占满整个交叉轴 +
+

项目属性

order 定义项目的排列顺序。数值越小越靠前，默认是0
flex-grow 定义项目的放大比例，默认是0
flex-shrink 定义项目的缩小比例，默认为1，即如果剩余空间不足，该项目将缩小
flex-basis 定义项目占据的主轴空间（main size），浏览器根据该属性，计算主轴是否有多余空间。默认值是 auto
flex 是 [<‘flex-grow’><‘flex-shrink’><‘flex-basis’>] 的简写。默认值是 0 1 auto。快捷值：auto（1 1 auto）和 none（0 0 auto）
align-self 允许单个项目有不同的对齐方式，可以覆盖 align-items 属性，默认值是 auto，表示继承父元素的 align-items 属性，如果没有父元素则等同于 stretch

参考示例： +骰子的布局

参考来源： +A Complete Guide to Flexbox +[阮一峰 Flex 布局教程：语法篇](

这个博客用于记录我个人所读所思所想，前端开发相关。

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fields { - slug - } - frontmatter { - title - } - } - } - } - } - ` - ).then(result => { - if (result.errors) { - throw result.errors - } - - // Create blog posts pages. - const posts = result.data.allMarkdownRemark.edges - - posts.forEach((post, index) => { - const previous = index === posts.length - 1 ? null : posts[index + 1].node - const next = index === 0 ? null : posts[index - 1].node - - createPage({ - path: post.node.fields.slug, - component: blogPost, - context: { - slug: post.node.fields.slug, - previous, - next, - }, - }) - }) - - return null - }) -} - -exports.onCreateNode = ({ node, actions, getNode }) => { - const { createNodeField } = actions - - if (node.internal.type === `MarkdownRemark`) { - const value = createFilePath({ node, getNode }) - createNodeField({ - name: `slug`, - node, - value, - }) - } -} diff --git a/grid-layout/index.html b/grid-layout/index.html new file mode 100644 index 0000000..73ef278 --- /dev/null +++ b/grid-layout/index.html @@ -0,0 +1,177 @@ +grid-layout | Cube Blog

Cube Blog

grid-layout

September 25, 2019 • ☕️ 4 min read

在处理一维布局时，我们一般会采用 flex 布局；而在做二维布局时，grid 布局是一个好的选择。

基本概念

Grid 布局，即网格布局，是一种基于二维网格的布局系统。

grid container 所有网格项目的父项。

grid item 网格项目。

grid line 构成网格结构的分界线。

grid track 两条相邻网格线之间的间距。

grid cell 两个相邻行和两个相邻列网格线之间的间距。是网格中的一个单元。

grid area 四条网格线包围的总空间。网格区域可以由任意数量的网格单元组成。

网格容器

通过 display 属性设置属性值为 grid 或 inline-grid 可以创建一个网格容器。网格容器中的所有子元素就会自动变成网格项目（grid item）。

显式网格

使用 grid-template-columns 和 grid-template-rows 属性可以显式的设置一个网格的列和行。

grid-template-rows 指定的每个值可以创建每行的高度。

grid-template-columns 指定的每个值可以创建每行的列宽。

.container {
+grid-template-columns: 40px 50px auto 50px 40px;
+grid-template-rows: 25% 100px auto;
+}

+
fr 单位代表网格容器中可用的空间。
+
```
grid-template-columns: 1fr 1fr 2fr
```
+
该示例中，网格容器分成了4等份。当 fr 和其它长度单位的值结合在一起的时候，fr 是基于网格容器可用空间来计算。
+
+
grid-template-areas
+
通过引用用grid - area属性指定的网格区域的名称来定义网格模板。
+
minmax 通过 minmax() 函数来创建网格轨道的最小或最大尺寸。
repeat 使用 repeat() 创建重复的网格轨道。

间距

column-gap 创建列与列之间的间距。
row-gap 创建行与行之间的间距。
gap 上面两属性的缩写形式，默认值是0。

容器内项目对齐

justify-items

沿内联(行)轴对齐网格项目。此值适用于容器内的所有网格项目。

start
center
end
stretch(default)

align-items

沿着块(列)轴对齐网格项目。此值适用于容器内的所有网格项目。

start
center
end
stretch(default)

网格项目

通过参考特定的网格线来确定网格项目在网格中的位置。

grid-column-start
grid-column-end
grid-column
grid-row-start
grid-row-end

grid-row

.item-a {
+grid-column-start: 2;
+grid-column-end: five;
+grid-row-start: row1-start;
+grid-row-end: 3;
+}

项目对齐

justify-self

沿内联(行)轴对齐单元格内的网格项目。此值适用于单个单元格内的网格项目。

start
center
end
stretch(default)

align-self

沿着块(列)轴对齐单元格内的网格项目。此值适用于单个网格项目内的内容。

start
center
end
stretch(default)

auto-fill 当容器的大小超过所有组合项目的大小时，auto-fill 会不断插入空行或空栏并将项目推到一边。
auto-fit 当容器的大小超过所有组合项目的大小时，auto-fit 会折叠这些空行或空栏并拉伸项目以适应容器的大小。

增加 fallback support

先写回退代码，然后使用较新属性覆写。

.selector {property: fallback-value;property: actual-value;}

+
先写回退代码，然后在 @support 中覆写。如果需要的话可以在 @support 中重置属性查看效果。
+
```
.selector {property: fallback-value;}@supports (display: grid) {.selector {property: actual-value;}}
```
+

在 @support 中写所有 css 代码。

@supports not (display: grid) {.selector {property: fallback-value;}}@supports (display: grid) {.selector {property: actual-value;}}

兼容性

+ + + + + grid fc98a513 1266 4780 a4bf ec8ba04cf16c + + + + +

@supports

    @supports <supports_condition> {/* specific rules */}

+
一个支持条件是由一个或者多个不同的逻辑操作符组成的表达式声明组合而成的。使用小括号可以调整这些表达式之间的优先级。
+

not 操作符

可以放在任何表达式的前面来产生一个新的表达式，为原表达式的值的否定。

    not (transform-origin: 2px)

and 操作符

用来将两个原始的表达式做逻辑与后生成一个新的表达式。

    (display: table-cell) and (display: list-item)

or 操作符

    ( transform-style: preserve ) or ( -moz-transform-style: preserve )

参考

CSS Grid 网格布局教程

A Complete Guide to Grid

这个博客用于记录我个人所读所思所想，前端开发相关。

\ No newline at end of file diff --git a/icons/icon-144x144.png b/icons/icon-144x144.png new file mode 100644 index 0000000..88d0518 Binary files /dev/null and b/icons/icon-144x144.png differ diff --git a/icons/icon-192x192.png b/icons/icon-192x192.png new file mode 100644 index 0000000..20e1d07 Binary files /dev/null and b/icons/icon-192x192.png differ diff --git a/icons/icon-256x256.png b/icons/icon-256x256.png new file mode 100644 index 0000000..e6bce01 Binary files /dev/null and b/icons/icon-256x256.png differ diff --git a/icons/icon-384x384.png b/icons/icon-384x384.png new file mode 100644 index 0000000..62b3786 Binary files /dev/null and b/icons/icon-384x384.png differ diff --git a/icons/icon-48x48.png b/icons/icon-48x48.png new file mode 100644 index 0000000..6253667 Binary files /dev/null and b/icons/icon-48x48.png differ diff --git a/icons/icon-512x512.png b/icons/icon-512x512.png new file mode 100644 index 0000000..7f91d93 Binary files /dev/null and b/icons/icon-512x512.png differ diff --git a/icons/icon-72x72.png b/icons/icon-72x72.png new file mode 100644 index 0000000..b50995e Binary files /dev/null and b/icons/icon-72x72.png differ diff --git a/icons/icon-96x96.png b/icons/icon-96x96.png new file mode 100644 index 0000000..fb08064 Binary files /dev/null and b/icons/icon-96x96.png differ diff --git a/idb-keyval-iife.min.js b/idb-keyval-iife.min.js new file mode 100644 index 0000000..067a966 --- /dev/null +++ b/idb-keyval-iife.min.js @@ -0,0 +1 @@ +var idbKeyval=function(e){"use strict";class t{constructor(e="keyval-store",t="keyval"){this.storeName=t,this._dbp=new Promise((r,n)=>{const o=indexedDB.open(e,1);o.onerror=(()=>n(o.error)),o.onsuccess=(()=>r(o.result)),o.onupgradeneeded=(()=>{o.result.createObjectStore(t)})})}_withIDBStore(e,t){return this._dbp.then(r=>new Promise((n,o)=>{const s=r.transaction(this.storeName,e);s.oncomplete=(()=>n()),s.onabort=s.onerror=(()=>o(s.error)),t(s.objectStore(this.storeName))}))}}let r;function n(){return r||(r=new t),r}return e.Store=t,e.get=function(e,t=n()){let r;return t._withIDBStore("readonly",t=>{r=t.get(e)}).then(()=>r.result)},e.set=function(e,t,r=n()){return r._withIDBStore("readwrite",r=>{r.put(t,e)})},e.del=function(e,t=n()){return t._withIDBStore("readwrite",t=>{t.delete(e)})},e.clear=function(e=n()){return e._withIDBStore("readwrite",e=>{e.clear()})},e.keys=function(e=n()){const t=[];return e._withIDBStore("readonly",e=>{(e.openKeyCursor||e.openCursor).call(e).onsuccess=function(){this.result&&(t.push(this.result.key),this.result.continue())}}).then(()=>t)},e}({}); \ No newline at end of file diff --git a/index.html b/index.html new file mode 100644 index 0000000..b624566 --- /dev/null +++ b/index.html @@ -0,0 +1,5 @@ +All posts | Cube Blog

Cube Blog

媒体查询 Media Queries

September 10, 2020 • ☕️ 1 min read

CSS 和 JavaScript 中使用媒体查询

常见的排序算法及其实现

April 10, 2020 • ☕️ 4 min read

本文记录常见的排序算法及其实现思路与代码。

JavaScript 常见函数方法模拟实现

February 12, 2020 • ☕️ 6 min read

call、apply、bind、new 等常见方法的模拟实现

React 中的条件渲染

November 06, 2019 • ☕️ 2 min read

React 中组件条件渲染的几种方式小结

React 项目中集成 eslint 与 prettier

October 20, 2019 • ☕️ 2 min read

An introduction of building a react project with eslint and prettier integration.

grid-layout

September 25, 2019 • ☕️ 4 min read

在处理一维布局时，我们一般会采用 flex 布局；而在做二维布局时，grid 布局是一个好的选择。

sass 概述

September 16, 2019 • ☕️ 4 min read

sass 是现在非常流行的 css 预处理器，本文介绍了一些 sass 的基础用法。

exploring npm

July 05, 2019 • ☕️☕️ 11 min read

npm 是目前最流行的 Node 包管理工具，在 javaScript 项目开发中得到了广泛使用。

Flexbox 布局

May 16, 2019 • ☕️ 2 min read

Flex 是 Flexible Box 的缩写，意为弹性布局。Flex 布局适用于应用程序的组件和小规模布局。

\ No newline at end of file diff --git a/manifest.webmanifest b/manifest.webmanifest new file mode 100644 index 0000000..337709c --- /dev/null +++ b/manifest.webmanifest @@ -0,0 +1 @@ +{"name":"Cube Blog","short_name":"Cube","start_url":"/","background_color":"#ffffff","theme_color":"#663399","display":"minimal-ui","cacheDigest":"8c19a894ebc3f54d282a8f2418cf5398","icons":[{"src":"icons/icon-48x48.png?v=8c19a894ebc3f54d282a8f2418cf5398","sizes":"48x48","type":"image/png"},{"src":"icons/icon-72x72.png?v=8c19a894ebc3f54d282a8f2418cf5398","sizes":"72x72","type":"image/png"},{"src":"icons/icon-96x96.png?v=8c19a894ebc3f54d282a8f2418cf5398","sizes":"96x96","type":"image/png"},{"src":"icons/icon-144x144.png?v=8c19a894ebc3f54d282a8f2418cf5398","sizes":"144x144","type":"image/png"},{"src":"icons/icon-192x192.png?v=8c19a894ebc3f54d282a8f2418cf5398","sizes":"192x192","type":"image/png"},{"src":"icons/icon-256x256.png?v=8c19a894ebc3f54d282a8f2418cf5398","sizes":"256x256","type":"image/png"},{"src":"icons/icon-384x384.png?v=8c19a894ebc3f54d282a8f2418cf5398","sizes":"384x384","type":"image/png"},{"src":"icons/icon-512x512.png?v=8c19a894ebc3f54d282a8f2418cf5398","sizes":"512x512","type":"image/png"}]} \ No newline at end of file diff --git a/media-queries/index.html b/media-queries/index.html new file mode 100644 index 0000000..a1fe664 --- /dev/null +++ b/media-queries/index.html @@ -0,0 +1,61 @@ +媒体查询 Media Queries | Cube Blog

Cube Blog

媒体查询 Media Queries

September 10, 2020 • ☕️ 1 min read

+
根据设备的大致类型以及特定参数来修改网站和应用程序
+

CSS 中的 `@media`

@media (max-width: 1240px) {
+	body {
+	  background-color: tomato;
+	}
+}

JavaScript 中的 `matchMedia()`

+
返回一个新的 MediaQueryList 对象，表示指定的媒体查询字符串解析后的结果。
+

// Create a media condition that targets viewports at least 768px wide
+const mediaQuery = window.matchMedia('(min-width: 768px)')
+
+
+// Check if the media query is true
+if (mediaQuery.matches) {
+  // Then trigger an alert
+  alert('Media Query Matched!')
+}

matches 只读的布尔值属性，当文档匹配当前的媒体查询内容时返回 true。

监听媒体查询状态变化

MediaQueryList 上有 addListener() 及与之对应的 removeListener() 方法，接受回调函数作为参数，当媒体查询状态改变时触发。

// Create a condition that targets viewports at least 768px wide
+const mediaQuery = window.matchMedia('(min-width: 768px)')
+
+
+function handleTabletChange(e) {
+  // Check if the media query is true
+  if (e.matches) {
+    // Then log the following message to the console
+    console.log('Media Query Matched!')
+  }
+}
+
+// Register event listener
+mediaQuery.addListener(handleTabletChange)
+
+// Initial check
+handleTabletChange(mediaQuery)

“过时”的方法

监听 window 上的 resize 事件，根据 window.innerWidth 的值作出响应。

function checkMediaQuery() {
+  // If the inner width of the window is greater then 768px
+  if (window.innerWidth > 768) {
+    // Then log this message to the console
+    console.log('Media Query Matched!')
+  }
+}
+
+// Add a listener for when the window resizes
+window.addEventListener('resize', checkMediaQuery);

Working with JavaScript Media Queries | CSS-Tricks

这个博客用于记录我个人所读所思所想，前端开发相关。

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\ No newline at end of file diff --git a/package.json b/package.json deleted file mode 100644 index fa6f1e1..0000000 --- a/package.json +++ /dev/null @@ -1,59 +0,0 @@ -{ - "name": "cube", - "private": true, - "description": "A Personal Blog for self documentation", - "version": "1.0.0", - "author": "mingrui ", - "bugs": { - "url": "https://github.com/gatsbyjs/gatsby/issues" - }, - "dependencies": { - "gatsby": "^2.3.32", - "gatsby-image": "^2.0.40", - "gatsby-plugin-feed": "^2.1.1", - "gatsby-plugin-google-analytics": "^2.0.18", - "gatsby-plugin-manifest": "^2.0.29", - "gatsby-plugin-offline": "^2.0.25", - "gatsby-plugin-react-helmet": "^3.0.12", - "gatsby-plugin-sharp": "^2.0.35", - "gatsby-plugin-typography": "^2.2.13", - "gatsby-remark-copy-linked-files": "^2.0.12", - "gatsby-remark-images": "^2.0.6", - "gatsby-remark-prismjs": "^3.2.8", - "gatsby-remark-responsive-iframe": "^2.1.1", - "gatsby-remark-smartypants": "^2.0.9", - "gatsby-source-filesystem": "^2.0.32", - "gatsby-transformer-remark": "^2.3.12", - "gatsby-transformer-sharp": "^2.1.18", - "prismjs": "^1.16.0", - "react": "^16.8.6", - "react-dom": "^16.8.6", - "react-helmet": "^5.2.0", - "react-typography": "^0.16.19", - "typeface-merriweather": "0.0.72", - "typeface-montserrat": "0.0.54", - "typography": "^0.16.19", - "typography-theme-wordpress-2016": "^0.16.19" - }, - "devDependencies": { - "prettier": "^1.17.0" - }, - "homepage": "https://github.com/gatsbyjs/gatsby-starter-blog#readme", - "keywords": [ - "gatsby" - ], - "license": "MIT", - "main": "n/a", - "repository": { - "type": "git", - "url": "git+https://github.com/gatsbyjs/gatsby-starter-blog.git" - }, - "scripts": { - "build": "gatsby build", - "develop": "gatsby develop", - "format": "prettier --write src/**/*.{js,jsx}", - "start": "npm run develop", - "serve": "gatsby serve", - "test": "echo \"Write tests! -> https://gatsby.dev/unit-testing\"" - } -} diff --git a/page-data/404.html/page-data.json b/page-data/404.html/page-data.json new file mode 100644 index 0000000..7dfff36 --- /dev/null +++ b/page-data/404.html/page-data.json @@ -0,0 +1 @@ +{"componentChunkName":"component---src-pages-404-js","path":"/404.html","result":{"data":{"site":{"siteMetadata":{"title":"Cube Blog"}}},"pageContext":{}},"staticQueryHashes":["3627597636"]} \ No newline at end of file diff --git a/page-data/404/page-data.json b/page-data/404/page-data.json new file mode 100644 index 0000000..13954f4 --- /dev/null +++ b/page-data/404/page-data.json @@ -0,0 +1 @@ +{"componentChunkName":"component---src-pages-404-js","path":"/404/","result":{"data":{"site":{"siteMetadata":{"title":"Cube Blog"}}},"pageContext":{}},"staticQueryHashes":["3627597636"]} \ No newline at end of file diff --git "a/page-data/JavaScript-\345\270\270\350\247\201\345\207\275\346\225\260\346\226\271\346\263\225\346\250\241\346\213\237\345\256\236\347\216\260/page-data.json" "b/page-data/JavaScript-\345\270\270\350\247\201\345\207\275\346\225\260\346\226\271\346\263\225\346\250\241\346\213\237\345\256\236\347\216\260/page-data.json" new file mode 100644 index 0000000..56e85e3 --- /dev/null +++ "b/page-data/JavaScript-\345\270\270\350\247\201\345\207\275\346\225\260\346\226\271\346\263\225\346\250\241\346\213\237\345\256\236\347\216\260/page-data.json" @@ -0,0 +1 @@ +{"componentChunkName":"component---src-templates-blog-post-js","path":"/JavaScript-常见函数方法模拟实现/","result":{"data":{"site":{"siteMetadata":{"title":"Cube Blog","author":"memory"}},"markdownRemark":{"id":"7ea2757d-0992-5ae3-ab61-08ef5543f559","html":"

call 的模拟实现

call() 方法先指定了 this 和可选的参数值后，调用某个函数或方法，返回该函数执行的返回值。

将函数设置为对象的属性
执行该函数
在对象属性中删除该函数

Function.prototype.myCall = function (context, ...args) {\n  // 对 context 为 null 的情况做处理\n  context = context || window\n\n  // 获取调用 call 的函数，可以用 this 获取\n  context.fn = this\n\n  // 调用该函数\n  let temp = context.fn(...args)\n\n  // 在属性中删除该函数\n  delete context.fn\n\n  return temp\n}

如果不用 ES6 中的 ... 语法，可以对函数的 arguments 类数组进行参数处理

apply 的模拟实现

apply 方法与 call 方法的不同之处是，apply 接收数组形式的可选参数

  /**\n   * @param {function} context\n   * @param {array} arr\n   */\n  Function.prototype.myApply = function (context, arr) {\n    context = context || window\n    context.fn = this\n    let temp = context.fn(...arr)\n    delete context.fn\n    return temp\n  }

bind 的模拟实现

bind() 方法创建一个新的函数，在 bind() 被调用时，这个新函数的 this 被指定为 bind() 的第一个参数，而其余参数将作为新函数的参数，供调用时使用。

  Function.prototype.myBind = function (context, ...args) {\n    // 调用 bind 的不是函数，报错！\n    if (typeof this !== 'function') {\n      threw new Error('Function.prototype.myBind - what is trying to bind is not callable!')\n    }\n\n    context = context || window\n\n    // 获取调用 bind 的函数\n    const self = this\n\n    return function F(...bindArgs) {\n      const distArgs = args.concat(bindArgs)\n      // 如果返回的函数以new F()的方式调用，因为new不会被任何方式改变this指向，所以我们需要忽略传入的 this\n      if (this instanceof F) {\n        return new self(...distArgs)\n      }\n      return self.apply(context, distArgs)\n    }\n  }

bind() 方法创建的函数还可以作为构造函数来创建新对象

一个绑定函数也能使用new操作符创建对象：这种行为就像把原函数当成构造器。提供的 this 值被忽略，同时调用时的参数被提供给模拟函数。

new

new 运算符创建一个用户定义的对象类型的实例或具有构造函数的内置对象类型之一

/**\n * 创建一个空的简单JavaScript对象（即{}）；\n * 链接该对象（即设置该对象的构造函数）到另一个对象 ；\n * 将步骤1新创建的对象作为this的上下文 ；\n * 如果该函数没有返回对象，则返回this。\n */\n\nconst _new = (_Contructor, ...args) => {\n  // 1.创建一个空的简单JavaScript对象（即{}）；\n  const obj = {}\n  // 2.链接该对象（即设置该对象的构造函数）到另一个对象 ；\n  Object.setPrototypeOf(obj, _Contructor.prototype)\n  // 3.将步骤1新创建的对象作为this的上下文 ；\n  const ret = _Contructor.apply(obj, args)\n  //4.如果该函数没有返回对象，则返回this。\n  return ret instanceof Object ? ret : this\n}

节流 throttle

节流指的是，如果持续触发事件，每隔一段事件，执行一次事件

当触发事件时，取出当前的时间戳，减去之前的时间戳（初始为0）。如果大于之前设置的时间周期，则执行函数，并更新时间戳为当前时间戳；如果小于时间周期，就不执行函数。

  // 使用时间戳实现\n  function throttle(func, delay) {\n    let previous = 0\n    return function(...args) {\n      const now = +new Date()\n      const context = this\n      if (now - previous > delay) {\n        func.apply(context, args)\n        previous = now\n      }\n    }\n  }

特点：事件会立即执行，但是停止触发后不能再执行。

在触发事件时，设置一个定时器，再次触发事件时，如果定时器存在，就不执行；直到定时器执行，然后执行函数，清空定时器。

  // 使用定时器实现\n  function throttle(func, delay) {\n    let timeout\n    let previous = 0\n\n    return function(...args) {\n      const context = this\n\n      if (!timeout) {\n        timeout = setTimeout(function() {\n          timeout = null\n          func.apply(this, args)\n        }, delay)\n      }\n    }\n  }

特点：事件会在 n 秒后第一次执行，事件停止触发后依然会执行一次。

leading: false 表示禁用第一次执行

trailing: false 表示禁用停止触发的回调

  function throttle(func, delay, options) {\n    let timeout, context, args, result\n    let previous = 0\n\n    if (!options) {\n      options = {}\n    }\n\n    const later = function() {\n      previous = options.leading === false ? 0 : new Date().getTime()\n      timeout = null\n      func.apply(context, args)\n    }\n\n    const throttled = function() {\n      const now = new Date().getTime()\n      if (!previous && options.leading === false) {\n        previous = now\n      }\n\n      // 下次触发 func 剩余的时间\n      let remaining = delay - (now - previous)\n      context = this\n      args = arguments\n\n      if (remaining <=0 || remaining > delay) {\n        if (timeout) {\n          clearTimeout(timeout)\n          timeout = null\n        }\n\n        previous = now\n        func.apply(context, args)\n\n        if (!timeout) {\n          context = args = null\n        }\n      } else if (!timeout && options.trailing !== false) {\n        timeout = setTimeout(later, remaining)\n      }\n    }\n\n    throttled.cancel = function() {\n      clearTimeout(timeout)\n      previous = 0\n      timeout = null\n    }\n\n    return throttled\n  }

防抖 debounce

  function debounce(func, delay, immediate) {\n    let timeout\n    return function(...args) {\n      const context = this\n\n      if (timeout) {\n        clearTimeout(timeout)\n      }\n\n      if (immediate) {\n        // 如果已经执行了，就不再执行了\n        const callNow = !timeout\n        timeout = setTimeout(function() {\n          timeout = null\n        }, delay)\n\n        if (callNow) {\n          func.apply(context, args)\n        }\n      } else {\n        timeout = setTimeout(function() {\n          func.apply(context, args)\n        }, delay)\n      }\n    }\n  }

Promise

Promise 构造函数传入的参数是一个执行函数。

内部使用 status 记录内部状态（pending、resolved、rejected）
data 记录 resolve 之后得到的数据或是错误
resolve 之后需要执行的函数队列
reject 之后需要执行的函数队列
向要执行的函数 fn 传入 resolve 函数和 reject 函数，这两个函数都是异步执行的
resolve(data) 函数内部会将 status 置为 resolved，并储存 data，最后调用 resolve 队列中的函数。
reject(err) 函数将 status 置为 rejected，并存储 err，最后调用 reject 队列中的函数

  function Promise(fn) {\n    const promise = this\n    promise.status = 'PENDING'\n    promise.value = null\n    promise.reason = null\n    promise.resolves = []\n    promise.rejects = []\n\n    function resolve(value) {\n      setTimeout(function () {\n        promise.status = 'FULFILLED'\n        promise.resolves.forEach(function (cb) {\n          cb(value)\n        })\n      }, 0)\n    }\n\n    function reject(reason) {\n      setTimeout(function () {\n        promise.status = 'REJECTED'\n        promise.rejects.forEach(function (cb) {\n          cb(reason)\n        })\n      }, 0)\n    }\n\n    promise.then = function (onFulfilled, onRejected) {\n      return new Promise(function (resolve, reject) {\n        function handle(value) {\n          let result = typeof onFulfilled === 'function' && onFulfilled(value) || value\n\n          if (result instanceof Promise) {\n            result.then(function (value) {\n              resolve(value)\n            })\n          } else {\n            resolve(result)\n          }\n        }\n\n        function err(reason) {\n          let result = typeof onRejected === 'function' && onRejected(reason) || reason\n\n          reject(reason)\n        }\n\n        if (promise.status === 'PENDING') {\n          promise.resolves.push(handle)\n          promise.rejects.push(err)\n        } else if (promise.status === 'FULFILLED') {\n          handle(promise.value)\n        } else if (promise.status === 'REJECTED') {\n          err(promise.reason)\n        }\n      })\n    }\n\n    // 全部完成才完成，一个 reject 直接 reject\n    promise.all = function(promiseArr) {\n      return new Promise((resolve, reject) => {\n        // 结果数组\n        let res = []\n        let count = 0\n        function handleData(index, data) {\n          count++\n          res[index] = data\n          if (count === promiseArr.length) {\n            resolve(res)\n          }\n        }\n\n        for (let i = 0; i < promiseArr.length; i++) {\n          Promise.resolve(promiseArr[i]).then((data) => {\n            handleData(i, data)\n          }, reject)\n        }\n      })\n    }\n\n    fn(resolve, reject)\n    return this\n  }

浅拷贝

浅拷贝和赋值有什么区别呢？

对于引用数据类型（数组、对象、函数），赋值只改变了引用的指针，指向同一个对象，所以相互之间会有影响。

而浅拷贝会在堆中重新创建内存，拷贝前后对象的基本类型互不影响，但只会拷贝一层，不能对对象中的子对象进行拷贝。

// Object\nObject.assign({}, obj)\n{...obj}\n\n// Array\nArray.concat()\nArray.slice(0)\nArray.from(a1)\n[...a1]

深拷贝

  // 缺点是对 函数、null、undefined 无效，不能处理循环引用\n  JSON.parse(JSON.stringfy())\n\n  // 手写\n  function deepClone(target, map = new Map()) {\n    if (typeof target === 'object') {\n      let cloneTarget = Array.isArray(target) ? [] : {}\n\n      // 解决循环引用的问题\n      if (map.get(target)) {\n        return map.get(target)\n      }\n      map.set(target, cloneTarget)\n\n      for (const key in target) {\n        cloneTarget[key] = deepClone(target[key], map)\n      }\n      return cloneTarget\n    } else {\n      return target\n    }\n  }

参考

","timeToRead":6,"excerpt":"call 的模拟实现 call() 方法先指定了 this 和可选的参数值后，调用某个函数或方法，返回该函数执行的返回值。将函数设置为对象的属性执行该函数在对象属性中删除该函数如果不用 ES6 中的语法，可以对函数的类数组进行参数处理 apply 的模拟实现 apply 方法与 call…","frontmatter":{"title":"JavaScript 常见函数方法模拟实现","date":"February 12, 2020","description":"call、apply、bind、new 等常见方法的模拟实现"},"fields":{"slug":"/JavaScript-常见函数方法模拟实现/"}}},"pageContext":{"slug":"/JavaScript-常见函数方法模拟实现/","previous":{"fields":{"slug":"/conditional-rendering-in-react/"},"frontmatter":{"title":"React 中的条件渲染"}},"next":{"fields":{"slug":"/sorting-common-algorithm-implement/"},"frontmatter":{"title":"常见的排序算法及其实现"}}}},"staticQueryHashes":["3627597636","4211413508"]} \ No newline at end of file diff --git a/page-data/app-data.json b/page-data/app-data.json new file mode 100644 index 0000000..1500ce6 --- /dev/null +++ b/page-data/app-data.json @@ -0,0 +1 @@ +{"webpackCompilationHash":"e47b4d894089ea43f188"} diff --git a/page-data/conditional-rendering-in-react/page-data.json b/page-data/conditional-rendering-in-react/page-data.json new file mode 100644 index 0000000..a6c63ea --- /dev/null +++ b/page-data/conditional-rendering-in-react/page-data.json @@ -0,0 +1 @@ +{"componentChunkName":"component---src-templates-blog-post-js","path":"/conditional-rendering-in-react/","result":{"data":{"site":{"siteMetadata":{"title":"Cube Blog","author":"memory"}},"markdownRemark":{"id":"3d8a2902-8fbc-52c9-8966-5e5c550a8313","html":"

什么是 React 中的条件渲染？

一个组件根据一个或多个条件决定其要返回（渲染）的元素。

if Else

function List({ list }) {\n  if (!list) {\n    return null\n  }\n\n  if (!list.length) {\n    return <p>Sorry, the list is empty.</p>\n  } else {\n    return (\n      <div>\n        {list.map(item => <ListItem item={item} />)}\n      </div>\n    )\n  }\n}

可以使用 if 表达式在渲染中提前 return。

三目运算符（Ternary Operation）

condition ? expr1 : expr2

function Item({ item, mode }) {\n  const isEditable = mode === 'EDIT'\n\n  return (\n    <div>\n      {isEditable ? (\n        <ItemEdit item={item} />\n      ) : (\n        <ItemView item={item} />\n      )}\n    </div>\n  )\n}

使用三目运算符比 if-else 表达式更加简洁明了。

逻辑与（&&）运算符

当我们想要根据条件决定是否渲染一个元素时，逻辑与运算符使得那些返回 null 的逻辑书写更加简洁。

function LoadingIndicator({ isLoading }) {\n  return (\n    <div>\n      { isLoading && <p>Loading...</p> }\n    </div>\n  )\n}

Switch Case 操作符

适用于有多个条件渲染时。

function Notification({ text, state }) {\n  switch(state) {\n    case 'info':\n      return <Info text={text} />\n    case 'warning':\n      return ...\n    case 'error':\n      return ...\n    default:\n      return null

不推荐这种方式，用下面的枚举的方式替代。

枚举（enums）

const getSpecificNotification = (text) => ({\n  info: <Info text={text} />,\n  warning: <Warning text={text} />,\n  error: <Error text={text} />,\n});\nfunction Notification({ state, text }) {\n  return (\n    <div>\n      {getSpecificNotification(text)[state]}\n    </div>\n  );\n}\n\nfunction FooBarOrFooOrBar({ isFoo, isBar }) {\n  const key = `${isFoo}-${isBar}`;\n  return (\n    <div>\n      {{\n        ['true-true']: <FooBar />,\n        ['true-false']: <Foo />,\n        ['false-true']: <Bar />,\n        ['false-false']: null,\n      }[key]}\n    </div>\n  );\n}\n\nFooBarOrFooOrBar.propTypes = {\n  isFoo: React.PropTypes.boolean.isRequired,\n  isBar: React.PropTypes.boolean.isRequired,\n}

嵌套条件渲染

尽量避免

可以使用之前的几种方式，但最好是将其拆分成几个更小的自己根据条件渲染的组件。

高阶组件（HOC）

// HOC declaration\nfunction withLoadingIndicator(Component) {\n  return function EnhancedComponent({ isLoading, ...props }) {\n    if (!isLoading) {\n      return <Component { ...props } />;\n    }\n    return <div><p>Loading...</p></div>;\n  };\n}\n// Usage\nconst ListWithLoadingIndicator = withLoadingIndicator(List);\n<ListWithLoadingIndicator\n  isLoading={props.isLoading}\n  list={props.list}\n/>

参考

All React Conditional Rendering Techniques - RWieruch

","timeToRead":2,"excerpt":"什么是 React 中的条件渲染？一个组件根据一个或多个条件决定其要返回（渲染）的元素。 if Else 可以使用 if 表达式在渲染中提前 return。三目运算符（Ternary Operation）使用三目运算符比 if-else…","frontmatter":{"title":"React 中的条件渲染","date":"November 06, 2019","description":"React 中组件条件渲染的几种方式小结"},"fields":{"slug":"/conditional-rendering-in-react/"}}},"pageContext":{"slug":"/conditional-rendering-in-react/","previous":{"fields":{"slug":"/react-with-eslint-and-prettier/"},"frontmatter":{"title":"React 项目中集成 eslint 与 prettier"}},"next":{"fields":{"slug":"/JavaScript-常见函数方法模拟实现/"},"frontmatter":{"title":"JavaScript 常见函数方法模拟实现"}}}},"staticQueryHashes":["3627597636","4211413508"]} \ No newline at end of file diff --git a/page-data/exploring-npm/page-data.json b/page-data/exploring-npm/page-data.json new file mode 100644 index 0000000..3f7a830 --- /dev/null +++ b/page-data/exploring-npm/page-data.json @@ -0,0 +1 @@ +{"componentChunkName":"component---src-templates-blog-post-js","path":"/exploring-npm/","result":{"data":{"site":{"siteMetadata":{"title":"Cube Blog","author":"memory"}},"markdownRemark":{"id":"66dc702f-0416-5725-ae3a-6fadb9fbf808","html":"

npm 是目前默认的 Node 包管理工具，在 javaScript 项目开发中得到了广泛使用。

node_modules

npm 使用 npm install 命令安装模块到node_modules 目录下。

npm install <packageName>

\n
node_modules 路径查找机制：默认情况下，模块查找对应的依赖包时，nodejs 会尝试从当前模块所在的目录开始，尝试在它的 node_modules 文件夹里加载相应的模块，如果没有找到，那么就再向上一级目录移动，直到到达全局安装路径中的 node_modules 为止。
\n

npm 5.x 安装组织 node_modules

\n
扁平化安装
\n
按照 package.json 里依赖的顺序依次解析，遇到新的包就将其安装在第一级目录，后续安装时如果遇到一级目录已经存在的包，会按照约定版本进行判断。如果符合版本约定就会忽略，否则会将其依次安装在依赖包的目录下。
\n
\n
增加了 package-lock.json 文件
\n
用以精确描述 node_modules 目录下所有的包的树状依赖结构，每个包的版本号都是完全精确的。
\n
```
\"glob\": {\n\"version\": \"7.1.3\",\n\"resolved\": \"https://registry.npmjs.org/glob/-/glob-7.1.3.tgz\",\n\"integrity\": \"sha512-vcfuiIxogLV4DlGBHIUOwI0IbrJ8HWPc4MU7HzviGeNho/UJDfi6B5p3sHeWIQ0KGIU0Jpxi5ZHxemQfLkkAwQ==\",\n\"requires\": {\n  \"fs.realpath\": \"^1.0.0\",\n  \"inflight\": \"^1.0.4\",\n  \"inherits\": \"2\",\n  \"minimatch\": \"^3.0.4\",\n  \"once\": \"^1.3.0\",\n  \"path-is-absolute\": \"^1.0.0\"\n}\n}
```
\n
以 glob 为例，package-lock.json 主要由以下几个字段进行描述：
\n
- version 包唯一的版本号
- resolved 安装源
- integrity hash 值，表明包的完整性，用来验证包是否已经失效
- dev 如果为true，则此依赖关系仅是顶级模块的开发依赖关系或者是一个的传递依赖关系
- requires 该依赖包所需要的依赖项
\n

依赖包

依赖包的分类

\n
dependencies 业务依赖
\n
依赖项属于线上的一部分，例如 react、material-ui 等等，供生产环境使用。
\n
```
npm [install|-i] <packageName> [--save|-S]
```
\n
\n
npm 5.x 之后，直接执行 npm i <packageName> 即可
\n
\n
\n
devDependencies 开发依赖
\n
依赖项只在项目开发时需要，不属于线上代码的一部分，例如 webpack、babel 等等
\n
```
npm [install|-i] <packageName> [--save-dev|-D]
```
\n
\n
peerDependencies 同伴依赖
\n
提示宿主环境安装插件在 peerDependencies 中指定依赖的包。
\n
\n
bundledDependencies / bundleDependencies 打包依赖
\n
这种依赖跟 npm pack 打包命令相关，必须先在前两种依赖中声明。
\n
optionalDependencies 可选依赖

依赖包的版本号

采用 semver 规范作为依赖版本管理方案，格式一般为：主版本号.次版本号.修订号(x.y.z)

\n
主版本号 major version
\n
可能是颠覆性的改动，导致可能会与低版本的 API 或者用法不兼容。
\n
\n
次版本号 minor version
\n
改动通常兼容同一个大版本内的 API 和用法。
\n
\n
如果大版本号是 0，表示处于开发初始阶段，一切都可能被改变。
\n
\n
\n
修订号 patch
\n
一般用于修复 bug 和细微的变更，通常要保持向前兼容。
\n

常见的版本格式：

”1.2.3” 精确版本号
“^1.2.3” ^ 能够兼容除了最左侧非 0 版本号之外的其他变化
“~1.2.3” ~ 如果列出了次版本号，那么只兼容补丁的修改；如果没有列出次版本号，那么兼容 2、3 位的修改
\n
“1.x”、“1.X”、“1.”、“1”、“\\”
\n
\n
”*” 、“x” 或者（空）表示可以匹配任何版本。
\n
“1.x”, “1.*” 和 “1” 表示匹配主版本号为 “1” 的所有版本，因此等价于 ”>= 1.0.0 < 2.0.0”。
\n
“1.2.x”, “1.2.*” 和 “1.2” 表示匹配版本号以 “1.2” 开头的所有版本，因此等价于 ”>= 1.2.0 < 1.3.0”。
\n
\n
\n
带预发布关键词的版本号
\n
\n
alpha(α)：预览版，或者叫内部测试版；一般不向外部发布，会有很多bug；一般只有测试人员使用。 beta(β)：测试版，或者叫公开测试版；这个阶段的版本会一直加入新的功能；在alpha版之后推出。 rc(release candidate)：最终测试版本；可能成为最终产品的候选版本，如果未出现问题则可发布成为正式版本。
\n
\n

依赖包的版本管理

# 更新某模块主版本下的最新版本\nnpm install <packageName>\n\n# 更新到指定版本号\nnpm install <packageName@x.x.x>\n\n# 卸载某个模块\nnpm uninstall <packageName>

\n
升级和卸载依赖包时，尽量通过命令实现，避免手动修改 package.json 中的版本号，一定不要手动修改 package-lock.json
\n

npm scripts 脚本

npm 可以在 package.json 文件中，使用 scripts 字段定义脚本命令。

{\n  \"scripts\": {\n    \"build\": \"node build.js\"\n  }\n}

基本原理

每次执行 npm run 时，会自动新建一个 Shell，在这个 Shell 中执行指定的脚本命令。

\n
npm run 新建的 Shell，会将当前目录中的 node_modules/.bin 子目录加入 PATH 变量中，执行结束后再将 PATH 变量恢复原样。
\n

因此，当前目录的 node_modules/.bin 子目录中的所有脚本，都可以直接使用脚本名调用，而不需要加上路径。

\n
PATH环境变量，是告诉系统，当要求系统运行一个程序而没有告诉它程序所在的完整路径时，系统除了在当前目录下面寻找此程序外，还应到哪些目录下去寻找。
\n

传参

除了第一个可执行的命令，以空格分割的任何字符串（除了一些 shell 的语法）都是参数，并且都能通过process.argv 属性访问。

\n
process.argv属性返回一个数组，这个数组包含了启动node进程时的命令行参数。第一个元素为启动node 进程的可执行文件的绝对路径名process.execPath，第二个元素为当前执行的JavaScript文件路径。剩余的元素为其他命令行参数。
\n

npm run serve --params     # 参数params将转化成process.env.npm_config_params = true\nnpm run serve --params=123 # 参数params将转化成process.env.npm_config_params = 123\nnpm run serve -params      # 等同于--params参数\n\nnpm run serve -- --params  # 将--params参数添加到process.env.argv数组中\nnpm run serve params       # 将params参数添加到process.env.argv数组中\nnpm run serve -- params    # 将params参数添加到process.env.argv数组中

通配符

npm 脚本即 Shell 脚本，所以可以使用 Shell 通配符。

\"lint\": \"jshint *.js\"\n\"lint\": \"jshint **/*.js\"

* 表示任意文件名，** 表示任意一层子目录。

多命令运行

串行执行

npm run script1 && npm run script2

\n
只要一个命令执行失败，则整个脚本终止。
\n

并行执行

多个任务可以同时的平行执行，使用 & 符号来连接。

npm run script1 & npm run script2

env 环境变量

\n
这些环境变量都只能在 npm run 的脚本执行环境内拿到。
\n

指令钩子

npm 脚本有 pre 和 post 两个钩子。例如：build 脚本命令的钩子就是 prebuild 和 postbuild。

在执行 npm run build 命令时，就会依次执行 npm run prebuild、npm run build、npm run postbuild。

可以结合 process.env.npm_lifecycle_event 一起使用。

npm 配置项

优先级

Command Line
env 环境变量
\n
npmrc 文件
\n
- 项目级
\n
只作用在本项目下，其他项目中不生效。
\n
- 用户级
\n
~/.npmrc 使用 npm config get userconfig 可以查看存放的路径。
\n
- 全局级
\n
$PREFIX/etc/npmrc 使用 npm config get globalconfig 可以查看存放的路径。
\n

npm config 指令

# 如果 key 不存在，那么会将新增到配置中；如果省略 value，那么会将 key 设置为 true\nnpm config set <key> <value> [-g|--global]\n\n# 指定 npm 包来源\nnpm config set registry <url>

npm config get <key>

delete

npm config delete <key> # 不能删除项目级的 .npmrc 文件里的配置项

list

npm config list [-l|--json] # 查看所有配置项

edit

npm config edit [-g|--global] # 编辑器中打开配置文件

更多默认配置参见npm config

npm 工程管理

项目版本号管理

package.json 中的 version 字段代表的是该项目的版本号。

尽量使用 npm version 指令来自动更新 version

npm version (v)1.2.3  # 显示设置版本号为 1.2.3 \nnpm version major  # 大版本号加 1，其余版本号归 0\nnpm version minor  # 小版本号加 1，修订号归 0\nnpm version patch  # 修订号加 1

还可以创建预发布版本：

# 当前版本号为 1.2.3\nnpm version prepatch  # 版本号变为 1.2.4-0，也就是 1.2.4 版本的第一个预发布版本\nnpm version preminor  # 版本号变为 1.3.0-0，也就是 1.3.0 版本的第一个预发布版本\nnpm version premajor  # 版本号变为 2.0.0-0，也就是 2.0.0 版本的第一个预发布版本\nnpm version prerelease  # 版本号变为 2.0.0-1，也就是使预发布版本号加一

在 git 环境中，执行 npm version 修改版本号之后，还会默认执行 git add -> git commit -> git tag 操作

其 commit message 默认是自动修改完成的版本号，可以通过添加 -m/—message 选项来自定义 commit message：

npm version minor -m \"feat(version): upgrade to %s for reasons\" # %s 会自动替换为新版本号

如果不想在 git 仓库中打上版本 tag，可以在指令中使用 --no-git-tag-version

如果想默认不影响 git 仓库，可以在 npm 设置中禁止：

npm config set git-tag-version false # 不自动打 tag\nnpm config set commit-hooks false    # 不自动 commit

域级包管理

package.json 中的依赖有两种形式：

\"devDependencies\": {\n  \"@commitlint/cli\": \"^7.2.1\",\n  \"commitizen\": \"^3.0.4\"\n}

域级包的发布

在项目的 package.json 的 name 属性中添加 scope 相关的声明，可以通过指令添加：

npm init --scope=scopeName -y

package.json 变为：

{\n  \"name\": \"@scopeName/package\"\n}

由于用 @ 声明了该包，npm 会将其认定为私有包，而在 npm 上托管私有包需要收费，所以可以在发布时添加--access=public 参数告知 npm 这不是私有包。

npm publish --access=public

\n
安装域级包时需要按照域级包全名来安装。
\n

其它

模块全局化

npm link

npm link 命令通过链接目录和可执行文件，实现任意位置的npm包命令的全局可执行。

npm link 主要做了两件事：

为目标 npm 模块创建软链接，将其链接到全局 node 模块安装路径 /usr/local/lib/node_modules/
为目标 npm模块的可执行 bin 文件创建软链接，将其链接到全局 node 命令安装路径 /usr/local/bin/

依赖锁定

npm 默认安装模块时，会通过脱字符 ^ 来限定所安装模块的主版本号。可以配置 npm 通过波浪符 ~ 来限定安装模块版本号：

npm config set save-prefix=\"~\"

也可以配置仅安装精确版本号的模块

npm config set save-exact true

参考

","timeToRead":11,"excerpt":"npm 是目前默认的 Node 包管理工具，在 javaScript 项目开发中得到了广泛使用。 node_modules npm…","frontmatter":{"title":"exploring npm","date":"July 05, 2019","description":"npm 是目前最流行的 Node 包管理工具，在 javaScript 项目开发中得到了广泛使用。"},"fields":{"slug":"/exploring-npm/"}}},"pageContext":{"slug":"/exploring-npm/","previous":{"fields":{"slug":"/flex-box/"},"frontmatter":{"title":"Flexbox 布局"}},"next":{"fields":{"slug":"/sass-learning/"},"frontmatter":{"title":"sass 概述"}}}},"staticQueryHashes":["3627597636","4211413508"]} \ No newline at end of file diff --git a/page-data/flex-box/page-data.json b/page-data/flex-box/page-data.json new file mode 100644 index 0000000..301431a --- /dev/null +++ b/page-data/flex-box/page-data.json @@ -0,0 +1 @@ +{"componentChunkName":"component---src-templates-blog-post-js","path":"/flex-box/","result":{"data":{"site":{"siteMetadata":{"title":"Cube Blog","author":"memory"}},"markdownRemark":{"id":"93431f8f-fe1c-5f98-a431-c2bdf896d2fd","html":"

Flex 是 Flexible Box 的缩写，意为弹性布局。Flex 布局适用于应用程序的组件和小规模布局。

基本概念

采用 Flex 布局的元素称为 flex 容器（flex container），而其子元素则称为 flex 项目（flex items）。

\n\n

$\"flex$

容器中有两根轴，分别是主轴（main axis）和交叉轴（cross axis）。

项目默认沿着主轴排列，一个项目占据的主轴空间为 main size，占据的交叉轴空间为 cross size。

容器属性

\n
flex-direction 决定主轴的方向
\n
- row（默认值）：水平，从左到右
- row-reverse：水平，从右往左
- column：垂直，从上到下
- column-reverse：垂直，从下往上
\n
\n
flex-wrap 决定当一条轴线排不下时，如何换行
\n
- nowrap：不换行
- wrap：换行，顺序从上到下
- wrap-reverse：换行，从下往上（即第一行在下）\n $\"wrap-reverse-demo\"$
\n
\n
flex-flow 为 flex-direction 和 flex-wrap 的合并形式
\n
```
flex-flow: <'flex-direction> || <'flex-wrap'>
```
\n
默认值是 row nowrap
\n
\n
justify-content 定义项目在主轴上的对齐方式
\n
- flex-start：左对齐
- flex-end：右对齐
- center：居中
- space-between：两端对齐，flex-item 之间的间距相等
- space-around：每个 flex-item 两侧间隔相等，则项目之间的间隔是与边框间隔的两倍。
\n
\n
align-items 定义项目在交叉轴上如何对齐
\n
- flex-start：交叉轴起点对齐
- flex-end：交叉轴终点对齐
- center：交叉轴中点对齐
- baseline：项目的第一行文字的基线对齐
- stretch（默认值）：项目将拉伸撑满整个容器
\n
\n
align-content 定义多根轴线的对齐方式
\n
- flex-start：与交叉轴起点对齐
- flex-end：与交叉轴终点对齐
- center：与交叉轴的中点对齐
- space-between：与交叉轴两端对齐，轴线之间间隔平均分布
- space-around：每根轴线两侧的间隔都相等
- stretch（默认值）：轴线占满整个交叉轴\n $\"align-content-demo\"$
\n

项目属性

order 定义项目的排列顺序。数值越小越靠前，默认是0
flex-grow 定义项目的放大比例，默认是0
flex-shrink 定义项目的缩小比例，默认为1，即如果剩余空间不足，该项目将缩小
flex-basis 定义项目占据的主轴空间（main size），浏览器根据该属性，计算主轴是否有多余空间。默认值是 auto
flex 是 [<‘flex-grow’><‘flex-shrink’><‘flex-basis’>] 的简写。默认值是 0 1 auto。快捷值：auto（1 1 auto）和 none（0 0 auto）
align-self 允许单个项目有不同的对齐方式，可以覆盖 align-items 属性，默认值是 auto，表示继承父元素的 align-items 属性，如果没有父元素则等同于 stretch

参考示例：\n骰子的布局

参考来源：\nA Complete Guide to Flexbox\n[阮一峰 Flex 布局教程：语法篇](

","timeToRead":2,"excerpt":"Flex 是 Flexible Box 的缩写，意为弹性布局。Flex 布局适用于应用程序的组件和小规模布局。基本概念采用 Flex 布局的元素称为 flex 容器（flex container），而其子元素则称为 flex 项目（flex items）。 flex box 容器中有两根轴，分别是主轴（main…","frontmatter":{"title":"Flexbox 布局","date":"May 16, 2019","description":"Flex 是 Flexible Box 的缩写，意为弹性布局。Flex 布局适用于应用程序的组件和小规模布局。"},"fields":{"slug":"/flex-box/"}}},"pageContext":{"slug":"/flex-box/","previous":null,"next":{"fields":{"slug":"/exploring-npm/"},"frontmatter":{"title":"exploring npm"}}}},"staticQueryHashes":["3627597636","4211413508"]} \ No newline at end of file diff --git a/page-data/grid-layout/page-data.json b/page-data/grid-layout/page-data.json new file mode 100644 index 0000000..f5a0114 --- /dev/null +++ b/page-data/grid-layout/page-data.json @@ -0,0 +1 @@ +{"componentChunkName":"component---src-templates-blog-post-js","path":"/grid-layout/","result":{"data":{"site":{"siteMetadata":{"title":"Cube Blog","author":"memory"}},"markdownRemark":{"id":"1db2a3b5-cd2a-5869-a4d7-c79a8cfa8e3f","html":"

在处理一维布局时，我们一般会采用 flex 布局；而在做二维布局时，grid 布局是一个好的选择。

基本概念

Grid 布局，即网格布局，是一种基于二维网格的布局系统。

grid container 所有网格项目的父项。

grid item 网格项目。

grid line 构成网格结构的分界线。

grid track 两条相邻网格线之间的间距。

grid cell 两个相邻行和两个相邻列网格线之间的间距。是网格中的一个单元。

grid area 四条网格线包围的总空间。网格区域可以由任意数量的网格单元组成。

网格容器

通过 display 属性设置属性值为 grid 或 inline-grid 可以创建一个网格容器。网格容器中的所有子元素就会自动变成网格项目（grid item）。

显式网格

使用 grid-template-columns 和 grid-template-rows 属性可以显式的设置一个网格的列和行。

grid-template-rows 指定的每个值可以创建每行的高度。

grid-template-columns 指定的每个值可以创建每行的列宽。

.container {\ngrid-template-columns: 40px 50px auto 50px 40px;\ngrid-template-rows: 25% 100px auto;\n}

\n
fr 单位代表网格容器中可用的空间。
\n
```
grid-template-columns: 1fr 1fr 2fr
```
\n
该示例中，网格容器分成了4等份。当 fr 和其它长度单位的值结合在一起的时候，fr 是基于网格容器可用空间来计算。
\n
\n
grid-template-areas
\n
通过引用用grid - area属性指定的网格区域的名称来定义网格模板。
\n
minmax 通过 minmax() 函数来创建网格轨道的最小或最大尺寸。
repeat 使用 repeat() 创建重复的网格轨道。

间距

column-gap 创建列与列之间的间距。
row-gap 创建行与行之间的间距。
gap 上面两属性的缩写形式，默认值是0。

容器内项目对齐

justify-items

沿内联(行)轴对齐网格项目。此值适用于容器内的所有网格项目。

start
center
end
stretch(default)

align-items

沿着块(列)轴对齐网格项目。此值适用于容器内的所有网格项目。

start
center
end
stretch(default)

网格项目

通过参考特定的网格线来确定网格项目在网格中的位置。

grid-column-start
grid-column-end
grid-column
grid-row-start
grid-row-end

grid-row

.item-a {\ngrid-column-start: 2;\ngrid-column-end: five;\ngrid-row-start: row1-start;\ngrid-row-end: 3;\n}

项目对齐

justify-self

沿内联(行)轴对齐单元格内的网格项目。此值适用于单个单元格内的网格项目。

start
center
end
stretch(default)

align-self

沿着块(列)轴对齐单元格内的网格项目。此值适用于单个网格项目内的内容。

start
center
end
stretch(default)

auto-fill 当容器的大小超过所有组合项目的大小时，auto-fill 会不断插入空行或空栏并将项目推到一边。
auto-fit 当容器的大小超过所有组合项目的大小时，auto-fit 会折叠这些空行或空栏并拉伸项目以适应容器的大小。

增加 fallback support

先写回退代码，然后使用较新属性覆写。

.selector {property: fallback-value;property: actual-value;}

\n
先写回退代码，然后在 @support 中覆写。如果需要的话可以在 @support 中重置属性查看效果。
\n
```
.selector {property: fallback-value;}@supports (display: grid) {.selector {property: actual-value;}}
```
\n

在 @support 中写所有 css 代码。

@supports not (display: grid) {.selector {property: fallback-value;}}@supports (display: grid) {.selector {property: actual-value;}}

兼容性

\n \n \n \n )\n\n\n// Check if the media query is true\nif (mediaQuery.matches) {\n // Then trigger an alert\n alert('Media Query Matched!')\n}\n

matches 只读的布尔值属性，当文档匹配当前的媒体查询内容时返回 true。

监听媒体查询状态变化

MediaQueryList 上有 addListener() 及与之对应的 removeListener() 方法，接受回调函数作为参数，当媒体查询状态改变时触发。

// Create a condition that targets viewports at least 768px wide\nconst mediaQuery = window.matchMedia('(min-width: 768px)')\n\n\nfunction handleTabletChange(e) {\n  // Check if the media query is true\n  if (e.matches) {\n    // Then log the following message to the console\n    console.log('Media Query Matched!')\n  }\n}\n\n// Register event listener\nmediaQuery.addListener(handleTabletChange)\n\n// Initial check\nhandleTabletChange(mediaQuery)

“过时”的方法

监听 window 上的 resize 事件，根据 window.innerWidth 的值作出响应。

function checkMediaQuery() {\n  // If the inner width of the window is greater then 768px\n  if (window.innerWidth > 768) {\n    // Then log this message to the console\n    console.log('Media Query Matched!')\n  }\n}\n\n// Add a listener for when the window resizes\nwindow.addEventListener('resize', checkMediaQuery);

Working with JavaScript Media Queries | CSS-Tricks

","timeToRead":1,"excerpt":"根据设备的大致类型以及特定参数来修改网站和应用程序 CSS 中的 JavaScript 中的返回一个新的 MediaQueryList 对象，表示指定的媒体查询字符串解析后的结果。 matches 只读的布尔值属性，当文档匹配当前的媒体查询内容时返回 true…","frontmatter":{"title":"媒体查询 Media Queries","date":"September 10, 2020","description":"CSS 和 JavaScript 中使用媒体查询"},"fields":{"slug":"/media-queries/"}}},"pageContext":{"slug":"/media-queries/","previous":{"fields":{"slug":"/sorting-common-algorithm-implement/"},"frontmatter":{"title":"常见的排序算法及其实现"}},"next":null}},"staticQueryHashes":["3627597636","4211413508"]} \ No newline at end of file diff --git a/page-data/offline-plugin-app-shell-fallback/page-data.json b/page-data/offline-plugin-app-shell-fallback/page-data.json new file mode 100644 index 0000000..417eb34 --- /dev/null +++ b/page-data/offline-plugin-app-shell-fallback/page-data.json @@ -0,0 +1 @@ +{"componentChunkName":"component---node-modules-gatsby-plugin-offline-app-shell-js","path":"/offline-plugin-app-shell-fallback/","result":{"pageContext":{}},"staticQueryHashes":[]} \ No newline at end of file diff --git a/page-data/react-with-eslint-and-prettier/page-data.json b/page-data/react-with-eslint-and-prettier/page-data.json new file mode 100644 index 0000000..6735253 --- /dev/null +++ b/page-data/react-with-eslint-and-prettier/page-data.json @@ -0,0 +1 @@ +{"componentChunkName":"component---src-templates-blog-post-js","path":"/react-with-eslint-and-prettier/","result":{"data":{"site":{"siteMetadata":{"title":"Cube Blog","author":"memory"}},"markdownRemark":{"id":"f4d8f987-f584-5ae2-bafb-bc38faf3ebb5","html":"

An introduction of building a react project with eslint and prettier integration.

Eslint

目标：检验代码、保证代码的一致性，避免错误。

作用：提供了 ECMAScript 规范的代码校验，我们可以使用开源的配置方案，这里采用的是 eslint-config-airbnb 。

使用的几个插件：

eslint-plugin-import 校验 import/export 语法，防止错误拼写文件路径和导出名称
eslint-plugin-jsx-a11y 提供 jsx 元素可访问性校验
eslint-plugin-react 校验 react
\n
eslint-plugin-react-hooks 根据 Hooks API 校验 Hooks 的使用
\n
./node_muodules/bin/eslint —init
\n

根据项目的需求，选择相应的配置，执行完毕后根目录下会多一个 ./eslintrc.js 文件。

可以在此文件中声明你想要的规则。

Eslint 在配置中有一个 extends 的配置项，作用是将其他人写好的规则集成到 eslint 中，后面的规则优先级大于前面的规则。

例如：

// .eslintrc.js\n'extends': ['react-app', 'airbnb', 'plugin:prettier/recommended']

这三个规则的优先级就是 prettier > airbnb > react-app，以此类推。

Prettier

用途：统一代码风格。

使用的插件：

eslint-config-prettier
eslint-plugin-prettier

在 extends 中配置 plugin:prettier/recommended 相当于同时配置了

  'extends': ['prettier'],\n  'plugins': ['prettier'],\n  'rules': { 'prettier/prettier': 'error' }

提交时校验代码

husky 处理 pre-commit、pre-push 等 githooks 的工具
lint-staged 对 git 暂存区的代码，运行 linters 的工具
commitlint 对提交信息进行规范约束

安装与参考配置：

yarn add --dev husky lint-staged @commitlint/cli @commitlint/config-conventional

// commitlint.config.js\nmodule.exports = { extends: ['@commitlint/config-conventional'] }

@commitlint/config-conventional 是遵从 angular 团队规范的 commit spec。

// package.json\n{\n\t...\n\t\"husky\": {\n\t\t\"hooks\": {\n\t\t\t\"pre-commit\": \"lint-staged\",\n\t\t\t\"commit-msg\": \"commitlint -E HUSKY_GIT_PARAMS\"\n\t\t}\n\t},\n\t\"lint-staged\": {\n\t\t\"src/*.{js, jsx, ts,tsx}\": [\n\t\t\t\"node_modules/.bin/prettier --write\",\n\t\t\t\"node_modules/.bin/eslint --fix\",\n\t\t\t\"git add\"\n\t\t],\n\t\t\"src/*.{css, scss, less, json, html, md, markdown}\": [\n\t\t\t\"node_modules/.bin/prettier --write\",\n\t\t\t\"git add\"\n\t\t]\n\t}\n\t...\n}

参考

如何在 React 项目中整合 Eslint 和 Prettier

react 配置 eslint+airbnb+Prettier

优雅的提交你的 Git Commit Message

","timeToRead":2,"excerpt":"An introduction of building a react project with eslint and prettier integration. Eslint 目标：检验代码、保证代码的一致性，避免错误。作用：提供了 ECMAScript…","frontmatter":{"title":"React 项目中集成 eslint 与 prettier","date":"October 20, 2019","description":"An introduction of building a react project with eslint and prettier integration."},"fields":{"slug":"/react-with-eslint-and-prettier/"}}},"pageContext":{"slug":"/react-with-eslint-and-prettier/","previous":{"fields":{"slug":"/grid-layout/"},"frontmatter":{"title":"grid-layout"}},"next":{"fields":{"slug":"/conditional-rendering-in-react/"},"frontmatter":{"title":"React 中的条件渲染"}}}},"staticQueryHashes":["3627597636","4211413508"]} \ No newline at end of file diff --git a/page-data/sass-learning/page-data.json b/page-data/sass-learning/page-data.json new file mode 100644 index 0000000..121e3ba --- /dev/null +++ b/page-data/sass-learning/page-data.json @@ -0,0 +1 @@ +{"componentChunkName":"component---src-templates-blog-post-js","path":"/sass-learning/","result":{"data":{"site":{"siteMetadata":{"title":"Cube Blog","author":"memory"}},"markdownRemark":{"id":"b5e9f9ce-8b77-5edb-b747-7faf29794bbc","html":"

sass 是现在非常流行的 css 预处理器，本文介绍了一些 sass 的基础用法。

使用变量

sass 使用$来标识变量。比如 $basic-border: 1px solid black;

变量可以在 css 规则块定义之外存在。如果变量定义在块内，就只能在块内使用。

  $red-color: red;\n  .nav {\n    $nav-width: 100px;\n    width: $nav-width;\n    color: $red-color;\n  }

sass 中声明变量时，也可以引用其他变量

  $highlight-color: #777;\n  $highlight-border: 1px solid $highlight-color;\n  .highlight {\n    border: $highlight-border;\n  }

嵌套 css

例如：

  .article {\n    .title {\n      font-size: 20px;\n    }\n\n    .body {\n      color: black;\n\n      .quote {\n        color: #777;\n      }\n    }\n  }

这样避免了既重复写选择器，又使得样式的可读性变得更高。

父选择器标识符 &

一般情况下，sass 会在解开一个嵌套规则时，将父选择器通过一个空格连接到子选择器的前面。但这种方式在写:hover这样的伪类时便不能达到想要的效果。

解决方法是使用父选择器标识符&。当包含父选择器标识符的嵌套规则被打开时，它不会像后代选择器那样进行拼接，而是&被父选择器直接替换.

  a {\n    color: blue;\n    &:hover {\n      color: red;\n    }\n  }\n\n  /*编译后*/\n  a { color: blue;}\n  a:hover { color: red;}

父选择器标识符还可以用于在父选择器之前添加选择器。

  .select {\n    color: red;\n    body & {\n      color: blue;\n    }\n  }\n\n  /*编译后*/\n  .select { color: red; }\n  body .select { color: green; }

群组选择器嵌套

  .container {\n    h1, h2, h3 {\n      margin: 0;\n    }\n  }\n  /*编译后*/\n  .container h1, .container h2, .container h3 {\n    margin: 0;\n  }

>、+ 和 ~ 子组合选择器和同层组合选择器

> 选择一个元素下紧跟的直接子元素
+ 选择一个元素后面紧跟的同层指定元素
~ 选择一个元素后所有的同层指定元素

嵌套属性

规则是：把属性名从中划线-的地方断开，在根属性后边添加一个冒号:，紧跟一个{ }块，把子属性部分写在这个{ }块中。

  item {\n    border: {\n      style: solid;\n      width: 1px;\n      color: #777;\n    }\n  }

导入 sass 文件

使用 sass 部分文件\nsass 局部文件的文件名以下划线开头。这样，sass 就不会在编译时单独编译这个文件输出 css，而只把这个文件用作导入。比如要导入一个_night-sky.scss的文件，只需要在样式表中写@import 'night-sky'。
\n
默认变量值\n一般情况下，你反复声明一个变量，只有最后一处声明有效且它会覆盖前边的值。\n使用 sass 的!default标签可以设置变量的默认值，如果该变量被声明赋值了就使用声明的值，否则使用默认值。
\n
```
  $fancy-width: 400px !default;\n  .fancy {\n    width: $fancy-width;\n  }
```
\n
嵌套导入\n跟原生的 css 不同，sass 允许@import命令写在 css 规则内。这种导入方式下，生成对应的 css 文件时，局部文件会被直接插入到 css 规则内导入它的地方。
原生的 css 导入

注释

sass 另外提供了一种不同于 css 标准注释格式/* ... */的注释语法，即静默注释，其内容不会出现在生成的 css 文件中。静默注释的语法跟 JavaScript、Java 等类 C 的语言中单行注释的语法相同，它们以//开头，注释内容直到行末。

  body {\n    color: #333; // 这种注释内容不会出现在生成的css文件中\n    padding: 0; /* 这种注释内容会出现在生成的css文件中 */\n  }

混合器

\n
通过 sass 的混合器实现大段样式的重用。
\n

混合器使用@mixin标识符定义，这个标识符给一大段样式赋予一个名字，这样就可以通过引用这个名字重用这段样式。

  @mixin rounded-corners {\n    -moz-border-radius: 5px;\n    -webkit-border-radius: 5px;\n    border-radius: 5px;\n  }

然后就可以在样式表中通过@include来使用这个混合器，@include调用会把混合器中的所有样式提取出来放在@include被调用的地方。

  .notice {\n    background-color:green;\n    @include rounded-corners;\n  }

是否使用混合器\n判断一组属性是否应该组合成一个混合器，一条经验法则就是能否为这个混合器想出一个好的名字。。。
混合器中的 css 规则\n混合器中除了可以包含属性，还可以包含 css 规则。

混合器的传参\n混合器并不一定总得生成相同的样式。可以通过在@include混合器时给混合器传参，来定制混合器生成的精确样式。

  @mixin link-colors($normal, $hover, $visited) {\n    color: $normal;\n    &:hover { color: $hover; }\n    &:visited { color: $visited; }\n  }\n\n  a {\n    @include link-colors(blue, red, green);\n  }

sass允许通过语法$name: value的形式指定每个参数的值。

  a {\n    @include link-colors(\n      $normal: blue;\n      $hover: red;\n      $visited: green;\n    )\n  }

默认参数\n为了在@include混合器时不必传入所有的参数，我们可以给参数指定一个默认值。参数默认值使用$name: default-value的声明形式，默认值可以是任何有效的 css 属性值，甚至是其他参数的引用。

选择器继承

选择器继承是说一个选择器可以继承为另一个选择器定义的所有样式。

  //通过选择器继承继承样式\n  .error {\n    border: 1px red;\n    background-color: #fdd;\n  }\n  .seriousError {\n    @extend .error;\n    border-width: 3px;\n  }

","timeToRead":4,"excerpt":"sass 是现在非常流行的 css 预处理器，本文介绍了一些 sass 的基础用法。使用变量 sass 使用来标识变量。比如变量可以在 css 规则块定义之外存在。如果变量定义在块内，就只能在块内使用。 sass 中声明变量时，也可以引用其他变量嵌套 css…","frontmatter":{"title":"sass 概述","date":"September 16, 2019","description":"sass 是现在非常流行的 css 预处理器，本文介绍了一些 sass 的基础用法。"},"fields":{"slug":"/sass-learning/"}}},"pageContext":{"slug":"/sass-learning/","previous":{"fields":{"slug":"/exploring-npm/"},"frontmatter":{"title":"exploring npm"}},"next":{"fields":{"slug":"/grid-layout/"},"frontmatter":{"title":"grid-layout"}}}},"staticQueryHashes":["3627597636","4211413508"]} \ No newline at end of file diff --git a/page-data/sorting-common-algorithm-implement/page-data.json b/page-data/sorting-common-algorithm-implement/page-data.json new file mode 100644 index 0000000..b5893b3 --- /dev/null +++ b/page-data/sorting-common-algorithm-implement/page-data.json @@ -0,0 +1 @@ +{"componentChunkName":"component---src-templates-blog-post-js","path":"/sorting-common-algorithm-implement/","result":{"data":{"site":{"siteMetadata":{"title":"Cube Blog","author":"memory"}},"markdownRemark":{"id":"d5852469-8039-5a19-80be-349ace98f000","html":"

本文记录常见的排序算法及其实现思路与代码。

基本的排序算法

冒泡排序

基本思想

给定一个数组，把数组里的元素都倒入水池中，这些元素通过相互之间的比较，按照大小顺序一个个像气泡一样浮出水面。

实现思路

每一轮都从杂乱无章的数组头部开始，每两个元素比较大小并进行交换，直到这一轮当中最大的（最小的）元素被放置在数组的尾部，然后不断重复这个过程，直到所有的元素都排好位置。

代码

  // 假设从小到大排序\n  function bubbleSort(arr) {\n    const len = arr.length\n    for (let i = 0; i < len; i++) {\n      for (j = 0; j < len - 1 - i; j++) {\n        if (arr[j] > arr[j+1]) {\n          // 如果前一个元素大于后一个元素，就交换\n          [arr[j], arr[j+1]] = [arr[j+1], arr[j]]\n        }\n      }\n    }\n\n    return arr\n  }\n\n  bubbleSort([2, 1, 7, 9, 5, 8]) // [1, 2, 5, 7, 8, 9]

算法分析

时间复杂度：O(n2)

空间复杂度：O(1)

插入排序

基本思想

不断的将未排好序的数插入到已经排好序的部分

特点

对于插入排序，经过每一轮排序之后，数组前端的数都是排好序

代码

  function insertSort(arr) {\n    const len = arr.length\n    // 认为数组的第一项已经排好序了，所以从第二项开始进行遍历\n    for (let i = 1, j, current; i < len; i++) {\n      // 把当前 i 指向的值用 current 保存\n      current = arr[i]\n      for (j = i - 1; j >= 0 && arr[j] > current; j--) {\n        // j 内循环，和 current 值比较，若 j 所指向的值比 current 值大，则该数右移一位\n        arr[j+1] = arr[j]\n      }\n\n      // current 值应该插入的位置\n      arr[j+1] = current\n    }\n\n    return arr\n  }\n\n  insertSort([2, 1, 7, 9, 5, 8]) // [1, 2, 5, 7, 8, 9]

算法分析

时间复杂度：O(n2)

空间复杂度：O(1)

常考的排序算法

归并排序

基本思想

核心是分治，就是把一个复杂的问题分成两个或多个相同或相似的子问题，然后把子问题分成更小的子问题，直到子问题可以简单的直接求解，最原问题的解就是子问题解的合并。

实现

一开始先把数组从中间划分成两个子数组，一直递归地把子数组划分成更小的子数组，直到子数组里面只有一个元素，才开始排序。

排序的方法就是按照大小顺序，合并两个元素，接着按照递归的返回顺序，不断地合并排好序的子数组，直到最后把整个数组的顺序排好。

代码

function merge(left, right) {\n  const result = []\n\n  while (left.length && right.length) {\n    if (left[0] <= right[0]) {\n      result.push(left.shift())\n    } else {\n      result.push(right.shift())\n    }\n  }\n\n  while (left.length) {\n    result.push(left.shift())\n  }\n\n  while (right.length) {\n    result.push(right.shift())\n  }\n\n  return result\n}\n\nfunction mergeSort(arr) {\n  if (arr.length <= 1) {\n    return arr\n  }\n\n  const pivotIndex = Math.floor(arr.length / 2)\n  const left = arr.slice(0, pivotIndex)\n  const right = arr.slice(pivotIndex)\n\n  return merge(mergeSort(left), mergeSort(right))\n}\n\nmergeSort([2, 1, 7, 9, 5, 8]) // [1, 2, 5, 7, 8, 9]

算法分析

时间复杂度：O(nlogn)

空间复杂度：O(n)

快速排序

基本思想

分治思想，自上而下

实现

把原始数组筛选成较小和较大的两个子数组，然后递归地排序两个子数组

代码

function quickSort(arr) {\n  if (arr.length <= 1) {\n    return arr\n  }\n\n  const midIndex = Math.floor(arr.length / 2)\n  const midValue = arr.splice(midIndex, 1)[0]\n  const left = [], right = []\n  arr.forEach((v) => {\n    if (v <= midValue) {\n      left.push(v)\n    } else {\n      right.push(v)\n    }\n  })\n\n  return quickSort(left).concat(midValue, quickSort(right))\n}\n\nquickSort([2, 1, 7, 9, 5, 8]) // [1, 2, 5, 7, 8, 9]

算法分析

时间复杂度：O(nlogn)

空间复杂度：O(logn)

拓扑排序

其他的排序算法

堆排序

基本思想

堆可以视为一棵完全的二叉树（除了最底层之外，每一层都是满的），因此堆可以用数组来表示，每一个节点对应数组中的一个元素。

在数组起始位置为 0 时

父节点 i 的左子节点在位置2*i+1

父节点 i 的右子节点在位置2*i+2

子节点 i 的父节点在位置Math.floor((i - 1) / 2)

实现

最大堆调整（Max-Heapify）：从堆的末端非叶子节点开始作调整，使得子节点永远小于父节点

创建最大堆（Build-Max-Heap）：将堆所有数据重新排序，使其成为最大堆

堆排序（Heap-Sort）：移除位在第一个数据的根节点，并做最大堆调整的递归运算

代码

function heapSort(arr) {\n  const len = arr.length\n\n  if (len <= 1) {\n    return arr\n  }\n\n  // 建立小顶堆\n  for (let i = Math.floor(len / 2 - 1); i >= 0; i--) {\n    minHeapify(arr, i, len)\n  }\n\n  // 排序\n  for (let j = 0; j < len; j++) {\n    // 把最小值放到最末\n    [arr[0], arr[len - 1 - j]] = [arr[len - 1 - j], arr[0]]\n    minHeapify(arr, 0, len - 2 - j)\n  }\n\n  return arr\n}\n\nfunction minHeapify(arr, index, length) {\n  const left = index * 2 + 1, right = index * 2 + 2\n  let minIndex = index\n\n  if (left <= length && arr[left] < arr[minIndex]) {\n    minIndex = left\n  }\n\n  if (right <= length && arr[right] < arr[minIndex]) {\n    minIndex = right\n  }\n\n  if (minIndex !== index) {\n    [arr[index], arr[minIndex]] = [arr[minIndex], arr[index]]\n    minHeapify(arr, minIndex, length)\n  }\n}\n\nheapSort([2, 1, 7, 9, 5, 8]) // [9, 8, 7, 5, 2, 1]

算法分析

时间复杂度：O(nlogn)

桶排序

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class="language-text">@media</code></h2> +<div class="gatsby-highlight" data-language="css"><pre class="language-css"><code class="language-css">@media (max-width: 1240px) { + body { + background-color: tomato; + } +}</code></pre></div> +<h2>JavaScript 中的 <code class="language-text">matchMedia()</code></h2> +<blockquote> +返回一个新的 <a href="https://developer.mozilla.org/zh-CN/docs/Web/API/MediaQueryList" target="_blank" rel="nofollow noopener noreferrer">MediaQueryList</a> 对象，表示指定的媒体查询字符串解析后的结果。 +</blockquote> +<div class="gatsby-highlight" data-language="js"><pre class="language-js"><code class="language-js">// Create a media condition that targets viewports at least 768px wide +const mediaQuery = window.matchMedia('(min-width: 768px)') + + +// Check if the media query is true +if (mediaQuery.matches) { + // Then trigger an alert + alert('Media Query Matched!') +}</code></pre></div> +<ul> +<li>matches 只读的布尔值属性，当文档匹配当前的媒体查询内容时返回 true。</li> +</ul> +<h2>监听媒体查询状态变化</h2> +MediaQueryList 上有 addListener() 及与之对应的 removeListener() 方法，接受回调函数作为参数，当媒体查询状态改变时触发。 +<div class="gatsby-highlight" data-language="js"><pre class="language-js"><code class="language-js">// Create a condition that targets viewports at least 768px wide +const mediaQuery = window.matchMedia('(min-width: 768px)') + + +function handleTabletChange(e) { + // Check if the media query is true + if (e.matches) { + // Then log the following message to the console + console.log('Media Query Matched!') + } +} + +// Register event listener +mediaQuery.addListener(handleTabletChange) + +// Initial check +handleTabletChange(mediaQuery)</code></pre></div> +<h2>“过时”的方法</h2> +监听 window 上的 resize 事件，根据 window.innerWidth 的值作出响应。 +<div class="gatsby-highlight" data-language="js"><pre class="language-js"><code class="language-js">function checkMediaQuery() { + // If the inner width of the window is greater then 768px + if (window.innerWidth > 768) { + // Then log this message to the console + console.log('Media Query Matched!') + } +} + +// Add a listener for when the window resizes +window.addEventListener('resize', checkMediaQuery);</code></pre></div> +<a href="https://css-tricks.com/working-with-javascript-media-queries/" target="_blank" rel="nofollow noopener noreferrer">Working with JavaScript Media Queries | CSS-Tricks</a><![CDATA[常见的排序算法及其实现]]>https://memory9.github.io/sorting-common-algorithm-implement/https://memory9.github.io/sorting-common-algorithm-implement/Fri, 10 Apr 2020 00:00:00 GMT本文记录常见的排序算法及其实现思路与代码。 +<h2>基本的排序算法</h2> +<h3>冒泡排序</h3> + 基本思想 + 给定一个数组，把数组里的元素都倒入水池中，这些元素通过相互之间的比较，按照大小顺序一个个像气泡一样浮出水面。 + 实现思路 + 每一轮都从杂乱无章的数组头部开始，每两个元素比较大小并进行交换，直到这一轮当中最大的（最小的）元素被放置在数组的尾部，然后不断重复这个过程，直到所有的元素都排好位置。 + 代码 +<div class="gatsby-highlight" data-language="js"><pre class="language-js"><code class="language-js"> // 假设从小到大排序 + function bubbleSort(arr) { + const len = arr.length + for (let i = 0; i < len; i++) { + for (j = 0; j < len - 1 - i; j++) { + if (arr[j] > arr[j+1]) { + // 如果前一个元素大于后一个元素，就交换 + [arr[j], arr[j+1]] = [arr[j+1], arr[j]] + } + } + } + + return arr + } + + bubbleSort([2, 1, 7, 9, 5, 8]) // [1, 2, 5, 7, 8, 9]</code></pre></div> + 算法分析 + 时间复杂度：O(n2) + 空间复杂度：O(1) +<h3>插入排序</h3> + 基本思想 + 不断的将未排好序的数插入到已经排好序的部分 + 特点 + 对于插入排序，经过每一轮排序之后，数组前端的数都是排好序 + 代码 +<div class="gatsby-highlight" data-language="js"><pre class="language-js"><code class="language-js"> function insertSort(arr) { + const len = arr.length + // 认为数组的第一项已经排好序了，所以从第二项开始进行遍历 + for (let i = 1, j, current; i < len; i++) { + // 把当前 i 指向的值用 current 保存 + current = arr[i] + for (j = i - 1; j >= 0 && arr[j] > current; j--) { + // j 内循环，和 current 值比较，若 j 所指向的值比 current 值大，则该数右移一位 + arr[j+1] = arr[j] + } + + // current 值应该插入的位置 + arr[j+1] = current + } + + return arr + } + + insertSort([2, 1, 7, 9, 5, 8]) // [1, 2, 5, 7, 8, 9]</code></pre></div> + 算法分析 + 时间复杂度：O(n2) + 空间复杂度：O(1) +<h2>常考的排序算法</h2> +<h3>归并排序</h3> + 基本思想 + 核心是分治，就是把一个复杂的问题分成两个或多个相同或相似的子问题，然后把子问题分成更小的子问题，直到子问题可以简单的直接求解，最原问题的解就是子问题解的合并。 + 实现 + 一开始先把数组从中间划分成两个子数组，一直递归地把子数组划分成更小的子数组，直到子数组里面只有一个元素，才开始排序。 + 排序的方法就是按照大小顺序，合并两个元素，接着按照递归的返回顺序，不断地合并排好序的子数组，直到最后把整个数组的顺序排好。 + 代码 +<div class="gatsby-highlight" data-language="js"><pre class="language-js"><code class="language-js">function merge(left, right) { + const result = [] + + while (left.length && right.length) { + if (left[0] <= right[0]) { + result.push(left.shift()) + } else { + result.push(right.shift()) + } + } + + while (left.length) { + result.push(left.shift()) + } + + while (right.length) { + result.push(right.shift()) + } + + return result +} + +function mergeSort(arr) { + if (arr.length <= 1) { + return arr + } + + const pivotIndex = Math.floor(arr.length / 2) + const left = arr.slice(0, pivotIndex) + const right = arr.slice(pivotIndex) + + return merge(mergeSort(left), mergeSort(right)) +} + +mergeSort([2, 1, 7, 9, 5, 8]) // [1, 2, 5, 7, 8, 9]</code></pre></div> + 算法分析 + 时间复杂度：O(nlogn) + 空间复杂度：O(n) +<h3>快速排序</h3> + 基本思想 + 分治思想，自上而下 + 实现 + 把原始数组筛选成较小和较大的两个子数组，然后递归地排序两个子数组 + 代码 +<div class="gatsby-highlight" data-language="js"><pre class="language-js"><code class="language-js">function quickSort(arr) { + if (arr.length <= 1) { + return arr + } + + const midIndex = Math.floor(arr.length / 2) + const midValue = arr.splice(midIndex, 1)[0] + const left = [], right = [] + arr.forEach((v) => { + if (v <= midValue) { + left.push(v) + } else { + right.push(v) + } + }) + + return quickSort(left).concat(midValue, quickSort(right)) +} + +quickSort([2, 1, 7, 9, 5, 8]) // [1, 2, 5, 7, 8, 9]</code></pre></div> + 算法分析 + 时间复杂度：O(nlogn) + 空间复杂度：O(logn) +<h3>拓扑排序</h3> +<h2>其他的排序算法</h2> +<h3>堆排序</h3> + 基本思想 + 堆可以视为一棵完全的二叉树（除了最底层之外，每一层都是满的），因此堆可以用数组来表示，每一个节点对应数组中的一个元素。 + 在数组起始位置为 0 时 + 父节点 i 的左子节点在位置<code class="language-text">2*i+1</code> + 父节点 i 的右子节点在位置<code class="language-text">2*i+2</code> + 子节点 i 的父节点在位置<code class="language-text">Math.floor((i - 1) / 2)</code> + 实现 + 最大堆调整（Max-Heapify）：从堆的末端非叶子节点开始作调整，使得子节点永远小于父节点 + 创建最大堆（Build-Max-Heap）：将堆所有数据重新排序，使其成为最大堆 + 堆排序（Heap-Sort）：移除位在第一个数据的根节点，并做最大堆调整的递归运算 + 代码 +<div class="gatsby-highlight" data-language="js"><pre class="language-js"><code class="language-js">function heapSort(arr) { + const len = arr.length + + if (len <= 1) { + return arr + } + + // 建立小顶堆 + for (let i = Math.floor(len / 2 - 1); i >= 0; i--) { + minHeapify(arr, i, len) + } + + // 排序 + for (let j = 0; j < len; j++) { + // 把最小值放到最末 + [arr[0], arr[len - 1 - j]] = [arr[len - 1 - j], arr[0]] + minHeapify(arr, 0, len - 2 - j) + } + + return arr +} + +function minHeapify(arr, index, length) { + const left = index * 2 + 1, right = index * 2 + 2 + let minIndex = index + + if (left <= length && arr[left] < arr[minIndex]) { + minIndex = left + } + + if (right <= length && arr[right] < arr[minIndex]) { + minIndex = right + } + + if (minIndex !== index) { + [arr[index], arr[minIndex]] = [arr[minIndex], arr[index]] + minHeapify(arr, minIndex, length) + } +} + +heapSort([2, 1, 7, 9, 5, 8]) // [9, 8, 7, 5, 2, 1]</code></pre></div> + 算法分析 + 时间复杂度：O(nlogn) +<h3>桶排序</h3><![CDATA[JavaScript 常见函数方法模拟实现]]>https://memory9.github.io/JavaScript-常见函数方法模拟实现/https://memory9.github.io/JavaScript-常见函数方法模拟实现/Wed, 12 Feb 2020 00:00:00 GMT<h2>call 的模拟实现</h2> +call() 方法先指定了 this 和可选的参数值后，调用某个函数或方法，返回该函数执行的返回值。 +<ol> +<li>将函数设置为对象的属性</li> +<li>执行该函数</li> +<li>在对象属性中删除该函数</li> +</ol> +<div class="gatsby-highlight" data-language="js"><pre class="language-js"><code class="language-js">Function.prototype.myCall = function (context, ...args) { + // 对 context 为 null 的情况做处理 + context = context || window + + // 获取调用 call 的函数，可以用 this 获取 + context.fn = this + + // 调用该函数 + let temp = context.fn(...args) + + // 在属性中删除该函数 + delete context.fn + + return temp +}</code></pre></div> +如果不用 ES6 中的 <code class="language-text">...</code> 语法，可以对函数的 <code class="language-text">arguments</code> 类数组进行参数处理 +<h2>apply 的模拟实现</h2> +apply 方法与 call 方法的不同之处是，apply 接收数组形式的可选参数 +<div class="gatsby-highlight" data-language="js"><pre class="language-js"><code class="language-js"> /** + * @param {function} context + * @param {array} arr + */ + Function.prototype.myApply = function (context, arr) { + context = context || window + context.fn = this + let temp = context.fn(...arr) + delete context.fn + return temp + }</code></pre></div> +<h2>bind 的模拟实现</h2> +bind() 方法创建一个新的函数，在 bind() 被调用时，这个新函数的 this 被指定为 bind() 的第一个参数，而其余参数将作为新函数的参数，供调用时使用。 +<div class="gatsby-highlight" data-language="js"><pre class="language-js"><code class="language-js"> Function.prototype.myBind = function (context, ...args) { + // 调用 bind 的不是函数，报错！ + if (typeof this !== 'function') { + threw new Error('Function.prototype.myBind - what is trying to bind is not callable!') + } + + context = context || window + + // 获取调用 bind 的函数 + const self = this + + return function F(...bindArgs) { + const distArgs = args.concat(bindArgs) + // 如果返回的函数以new F()的方式调用，因为new不会被任何方式改变this指向，所以我们需要忽略传入的 this + if (this instanceof F) { + return new self(...distArgs) + } + return self.apply(context, distArgs) + } + }</code></pre></div> +bind() 方法创建的函数还可以作为构造函数来创建新对象 +一个绑定函数也能使用new操作符创建对象：这种行为就像把原函数当成构造器。提供的 this 值被忽略，同时调用时的参数被提供给模拟函数。 +<h2>new</h2> +new 运算符创建一个用户定义的对象类型的实例或具有构造函数的内置对象类型之一 +<div class="gatsby-highlight" data-language="js"><pre class="language-js"><code class="language-js">/** + * 创建一个空的简单JavaScript对象（即{}）； + * 链接该对象（即设置该对象的构造函数）到另一个对象； + * 将步骤1新创建的对象作为this的上下文； + * 如果该函数没有返回对象，则返回this。 + */ + +const _new = (_Contructor, ...args) => { + // 1.创建一个空的简单JavaScript对象（即{}）； + const obj = {} + // 2.链接该对象（即设置该对象的构造函数）到另一个对象； + Object.setPrototypeOf(obj, _Contructor.prototype) + // 3.将步骤1新创建的对象作为this的上下文； + const ret = _Contructor.apply(obj, args) + //4.如果该函数没有返回对象，则返回this。 + return ret instanceof Object ? ret : this +}</code></pre></div> +<h2>节流 throttle</h2> +节流指的是，如果持续触发事件，每隔一段事件，执行一次事件 +<ul> +<li>当触发事件时，取出当前的时间戳，减去之前的时间戳（初始为0）。如果大于之前设置的时间周期，则执行函数，并更新时间戳为当前时间戳；如果小于时间周期，就不执行函数。</li> +</ul> +<div class="gatsby-highlight" data-language="js"><pre class="language-js"><code class="language-js"> // 使用时间戳实现 + function throttle(func, delay) { + let previous = 0 + return function(...args) { + const now = +new Date() + const context = this + if (now - previous > delay) { + func.apply(context, args) + previous = now + } + } + }</code></pre></div> +特点：事件会立即执行，但是停止触发后不能再执行。 +<ul> +<li>在触发事件时，设置一个定时器，再次触发事件时，如果定时器存在，就不执行；直到定时器执行，然后执行函数，清空定时器。</li> +</ul> +<div class="gatsby-highlight" data-language="js"><pre class="language-js"><code class="language-js"> // 使用定时器实现 + function throttle(func, delay) { + let timeout + let previous = 0 + + return function(...args) { + const context = this + + if (!timeout) { + timeout = setTimeout(function() { + timeout = null + func.apply(this, args) + }, delay) + } + } + }</code></pre></div> +特点：事件会在 n 秒后第一次执行，事件停止触发后依然会执行一次。 +leading: false 表示禁用第一次执行 +trailing: false 表示禁用停止触发的回调 +<div class="gatsby-highlight" data-language="js"><pre class="language-js"><code class="language-js"> function throttle(func, delay, options) { + let timeout, context, args, result + let previous = 0 + + if (!options) { + options = {} + } + + const later = function() { + previous = options.leading === false ? 0 : new Date().getTime() + timeout = null + func.apply(context, args) + } + + const throttled = function() { + const now = new Date().getTime() + if (!previous && options.leading === false) { + previous = now + } + + // 下次触发 func 剩余的时间 + let remaining = delay - (now - previous) + context = this + args = arguments + + if (remaining <=0 || remaining > delay) { + if (timeout) { + clearTimeout(timeout) + timeout = null + } + + previous = now + func.apply(context, args) + + if (!timeout) { + context = args = null + } + } else if (!timeout && options.trailing !== false) { + timeout = setTimeout(later, remaining) + } + } + + throttled.cancel = function() { + clearTimeout(timeout) + previous = 0 + timeout = null + } + + return throttled + }</code></pre></div> +<h2>防抖 debounce</h2> +<div class="gatsby-highlight" data-language="js"><pre class="language-js"><code class="language-js"> function debounce(func, delay, immediate) { + let timeout + return function(...args) { + const context = this + + if (timeout) { + clearTimeout(timeout) + } + + if (immediate) { + // 如果已经执行了，就不再执行了 + const callNow = !timeout + timeout = setTimeout(function() { + timeout = null + }, delay) + + if (callNow) { + func.apply(context, args) + } + } else { + timeout = setTimeout(function() { + func.apply(context, args) + }, delay) + } + } + }</code></pre></div> +<h2>Promise</h2> +Promise 构造函数传入的参数是一个执行函数。 +<ul> +<li>内部使用 status 记录内部状态（pending、resolved、rejected）</li> +<li>data 记录 resolve 之后得到的数据或是错误</li> +<li>resolve 之后需要执行的函数队列</li> +<li>reject 之后需要执行的函数队列</li> +<li>向要执行的函数 fn 传入 resolve 函数和 reject 函数，这两个函数都是异步执行的</li> +<li>resolve(data) 函数内部会将 status 置为 resolved，并储存 data，最后调用 resolve 队列中的函数。</li> +<li>reject(err) 函数将 status 置为 rejected，并存储 err，最后调用 reject 队列中的函数</li> +</ul> +<div class="gatsby-highlight" data-language="js"><pre class="language-js"><code class="language-js"> function Promise(fn) { + const promise = this + promise.status = 'PENDING' + promise.value = null + promise.reason = null + promise.resolves = [] + promise.rejects = [] + + function resolve(value) { + setTimeout(function () { + promise.status = 'FULFILLED' + promise.resolves.forEach(function (cb) { + cb(value) + }) + }, 0) + } + + function reject(reason) { + setTimeout(function () { + promise.status = 'REJECTED' + promise.rejects.forEach(function (cb) { + cb(reason) + }) + }, 0) + } + + promise.then = function (onFulfilled, onRejected) { + return new Promise(function (resolve, reject) { + function handle(value) { + let result = typeof onFulfilled === 'function' && onFulfilled(value) || value + + if (result instanceof Promise) { + result.then(function (value) { + resolve(value) + }) + } else { + resolve(result) + } + } + + function err(reason) { + let result = typeof onRejected === 'function' && onRejected(reason) || reason + + reject(reason) + } + + if (promise.status === 'PENDING') { + promise.resolves.push(handle) + promise.rejects.push(err) + } else if (promise.status === 'FULFILLED') { + handle(promise.value) + } else if (promise.status === 'REJECTED') { + err(promise.reason) + } + }) + } + + // 全部完成才完成，一个 reject 直接 reject + promise.all = function(promiseArr) { + return new Promise((resolve, reject) => { + // 结果数组 + let res = [] + let count = 0 + function handleData(index, data) { + count++ + res[index] = data + if (count === promiseArr.length) { + resolve(res) + } + } + + for (let i = 0; i < promiseArr.length; i++) { + Promise.resolve(promiseArr[i]).then((data) => { + handleData(i, data) + }, reject) + } + }) + } + + fn(resolve, reject) + return this + }</code></pre></div> +<h2>浅拷贝</h2> +浅拷贝和赋值有什么区别呢？ +对于引用数据类型（数组、对象、函数），赋值只改变了引用的指针，指向同一个对象，所以相互之间会有影响。 +而浅拷贝会在堆中重新创建内存，拷贝前后对象的基本类型互不影响，但只会拷贝一层，不能对对象中的子对象进行拷贝。 +<div class="gatsby-highlight" data-language="js"><pre class="language-js"><code class="language-js">// Object +Object.assign({}, obj) +{...obj} + +// Array +Array.concat() +Array.slice(0) +Array.from(a1) +[...a1]</code></pre></div> +<h2>深拷贝</h2> +<div class="gatsby-highlight" data-language="js"><pre class="language-js"><code class="language-js"> // 缺点是对函数、null、undefined 无效，不能处理循环引用 + JSON.parse(JSON.stringfy()) + + // 手写 + function deepClone(target, map = new Map()) { + if (typeof target === 'object') { + let cloneTarget = Array.isArray(target) ? [] : {} + + // 解决循环引用的问题 + if (map.get(target)) { + return map.get(target) + } + map.set(target, cloneTarget) + + for (const key in target) { + cloneTarget[key] = deepClone(target[key], map) + } + return cloneTarget + } else { + return target + } + }</code></pre></div> + <a href="https://juejin.im/post/5d6aa4f96fb9a06b112ad5b1#" target="_blank" rel="nofollow noopener noreferrer">参考</a><![CDATA[React 中的条件渲染]]>https://memory9.github.io/conditional-rendering-in-react/https://memory9.github.io/conditional-rendering-in-react/Wed, 06 Nov 2019 00:00:00 GMT什么是 React 中的条件渲染？ +一个组件根据一个或多个条件决定其要返回（渲染）的元素。 +<h2>if Else</h2> +<div class="gatsby-highlight" data-language="jsx"><pre class="language-jsx"><code class="language-jsx">function List({ list }) { + if (!list) { + return null + } + + if (!list.length) { + return <p>Sorry, the list is empty.</p> + } else { + return ( + <div> + {list.map(item => <ListItem item={item} />)} + </div> + ) + } +}</code></pre></div> +可以使用 if 表达式在渲染中提前 return。 +<h2>三目运算符（Ternary Operation）</h2> +<code class="language-text">condition ? expr1 : expr2</code> +<div class="gatsby-highlight" data-language="jsx"><pre class="language-jsx"><code class="language-jsx">function Item({ item, mode }) { + const isEditable = mode === 'EDIT' + + return ( + <div> + {isEditable ? ( + <ItemEdit item={item} /> + ) : ( + <ItemView item={item} /> + )} + </div> + ) +}</code></pre></div> +使用三目运算符比 if-else 表达式更加简洁明了。 +<h2>逻辑与（&&）运算符</h2> +当我们想要根据条件决定是否渲染一个元素时，逻辑与运算符使得那些返回 null 的逻辑书写更加简洁。 +在 JavaScript 中，<code class="language-text">true && 'Hello World'</code> 相当于 <code class="language-text">'Hello World'</code>；<code class="language-text">false && 'Hello World'</code> 相当于 <code class="language-text">false</code>。也即，当条件表达式为真，逻辑与<code class="language-text">&&</code> 后面的操作符会成为输出；当条件表达式为假，React 则会忽略并跳过该表达式。 +<div class="gatsby-highlight" data-language="jsx"><pre class="language-jsx"><code class="language-jsx">function LoadingIndicator({ isLoading }) { + return ( + <div> + { isLoading && <p>Loading...</p> } + </div> + ) +}</code></pre></div> +<h2>Switch Case 操作符</h2> +适用于有多个条件渲染时。 +<div class="gatsby-highlight" data-language="jsx"><pre class="language-jsx"><code class="language-jsx">function Notification({ text, state }) { + switch(state) { + case 'info': + return <Info text={text} /> + case 'warning': + return ... + case 'error': + return ... + default: + return null</code></pre></div> +不推荐这种方式，用下面的枚举的方式替代。 +<h2>枚举（enums）</h2> +<div class="gatsby-highlight" data-language="jsx"><pre class="language-jsx"><code class="language-jsx">const getSpecificNotification = (text) => ({ + info: <Info text={text} />, + warning: <Warning text={text} />, + error: <Error text={text} />, +}); +function Notification({ state, text }) { + return ( + <div> + {getSpecificNotification(text)[state]} + </div> + ); +} + +function FooBarOrFooOrBar({ isFoo, isBar }) { + const key = `${isFoo}-${isBar}`; + return ( + <div> + {{ + ['true-true']: <FooBar />, + ['true-false']: <Foo />, + ['false-true']: <Bar />, + ['false-false']: null, + }[key]} + </div> + ); +} + +FooBarOrFooOrBar.propTypes = { + isFoo: React.PropTypes.boolean.isRequired, + isBar: React.PropTypes.boolean.isRequired, +}</code></pre></div> +<h2>嵌套条件渲染</h2> +尽量避免 +可以使用之前的几种方式，但最好是将其拆分成几个更小的自己根据条件渲染的组件。 +<h2>高阶组件（HOC）</h2> +<div class="gatsby-highlight" data-language="jsx"><pre class="language-jsx"><code class="language-jsx">// HOC declaration +function withLoadingIndicator(Component) { + return function EnhancedComponent({ isLoading, ...props }) { + if (!isLoading) { + return <Component { ...props } />; + } + return <div><p>Loading...</p></div>; + }; +} +// Usage +const ListWithLoadingIndicator = withLoadingIndicator(List); +<ListWithLoadingIndicator + isLoading={props.isLoading} + list={props.list} +/></code></pre></div> +<h2>参考</h2> +<a href="https://www.robinwieruch.de/conditional-rendering-react?utm_campaign=Robin%20Wieruch%20-%20A%20Developer%27s%20Newsletter&utm_medium=email&utm_source=Revue%20newsletter" target="_blank" rel="nofollow noopener noreferrer">All React Conditional Rendering Techniques - RWieruch</a><![CDATA[React 项目中集成 eslint 与 prettier]]>https://memory9.github.io/react-with-eslint-and-prettier/https://memory9.github.io/react-with-eslint-and-prettier/Sun, 20 Oct 2019 00:00:00 GMTAn introduction of building a react project with eslint and prettier integration. +<h2>Eslint</h2> +目标：检验代码、保证代码的一致性，避免错误。 +作用：提供了 ECMAScript 规范的代码校验，我们可以使用开源的配置方案，这里采用的是 <code class="language-text">eslint-config-airbnb</code> 。 +使用的几个插件： +<ul> +<li>eslint-plugin-import 校验 import/export 语法，防止错误拼写文件路径和导出名称</li> +<li>eslint-plugin-jsx-a11y 提供 jsx 元素可访问性校验</li> +<li>eslint-plugin-react 校验 react</li> +<li> +eslint-plugin-react-hooks 根据 Hooks API 校验 Hooks 的使用 +./node_muodules/bin/eslint —init +</li> +</ul> +根据项目的需求，选择相应的配置，执行完毕后根目录下会多一个 <code class="language-text">./eslintrc.js</code> 文件。 +可以在此文件中声明你想要的规则。 +Eslint 在配置中有一个 extends 的配置项，作用是将其他人写好的规则集成到 eslint 中，后面的规则优先级大于前面的规则。 +例如： +<div class="gatsby-highlight" data-language="js"><pre class="language-js"><code class="language-js">// .eslintrc.js +'extends': ['react-app', 'airbnb', 'plugin:prettier/recommended']</code></pre></div> +这三个规则的优先级就是 prettier > airbnb > react-app，以此类推。 +<h2>Prettier</h2> +用途：统一代码风格。 +使用的插件： +<ul> +<li>eslint-config-prettier</li> +<li>eslint-plugin-prettier</li> +</ul> +在 extends 中配置 <code class="language-text">plugin:prettier/recommended</code> 相当于同时配置了 +<div class="gatsby-highlight" data-language="js"><pre class="language-js"><code class="language-js"> 'extends': ['prettier'], + 'plugins': ['prettier'], + 'rules': { 'prettier/prettier': 'error' }</code></pre></div> +<h2>提交时校验代码</h2> +<ul> +<li>husky 处理 pre-commit、pre-push 等 githooks 的工具</li> +<li>lint-staged 对 git 暂存区的代码，运行 linters 的工具</li> +<li>commitlint 对提交信息进行规范约束</li> +</ul> +安装与参考配置： +<div class="gatsby-highlight" data-language="shell"><pre class="language-shell"><code class="language-shell">yarn add --dev husky lint-staged @commitlint/cli @commitlint/config-conventional</code></pre></div> +<div class="gatsby-highlight" data-language="js"><pre class="language-js"><code class="language-js">// commitlint.config.js +module.exports = { extends: ['@commitlint/config-conventional'] }</code></pre></div> +<code class="language-text">@commitlint/config-conventional</code> 是遵从 angular 团队规范的 commit spec。 +<div class="gatsby-highlight" data-language="json"><pre class="language-json"><code class="language-json">// package.json +{ + ... + "husky": { + "hooks": { + "pre-commit": "lint-staged", + "commit-msg": "commitlint -E HUSKY_GIT_PARAMS" + } + }, + "lint-staged": { + "src/*.{js, jsx, ts,tsx}": [ + "node_modules/.bin/prettier --write", + "node_modules/.bin/eslint --fix", + "git add" + ], + "src/*.{css, scss, less, json, html, md, markdown}": [ + "node_modules/.bin/prettier --write", + "git add" + ] + } + ... +}</code></pre></div> +<h3>参考</h3> +<a href="https://juejin.im/post/5d7b9863e51d456212049214" target="_blank" rel="nofollow noopener noreferrer">如何在 React 项目中整合 Eslint 和 Prettier</a> +<a href="https://juejin.im/post/5d3da1556fb9a07ed6581b82" target="_blank" rel="nofollow noopener noreferrer">react 配置 eslint+airbnb+Prettier</a> +<a href="https://juejin.im/post/5afc5242f265da0b7f44bee4" target="_blank" rel="nofollow noopener noreferrer">优雅的提交你的 Git Commit Message</a><![CDATA[grid-layout]]>https://memory9.github.io/grid-layout/https://memory9.github.io/grid-layout/Wed, 25 Sep 2019 00:00:00 GMT在处理一维布局时，我们一般会采用 flex 布局；而在做二维布局时，grid 布局是一个好的选择。 +<h1>基本概念</h1> +<hr> +Grid 布局，即网格布局，是一种基于二维网格的布局系统。 +grid container 所有网格项目的父项。 +grid item 网格项目。 +grid line 构成网格结构的分界线。 +<img src="/75dd4c18172ef2354f34c92af12e88c2/terms-grid-line-a0343f0a-7176-4aa0-be1c-89529a03ffbc.svg"> +grid track 两条相邻网格线之间的间距。 +<img src="/0ffd815739fc50656ba53c98cd2c5e95/terms-grid-track-2c92ad8f-eb75-4478-bd56-5c198a462fa4.svg"> +grid cell 两个相邻行和两个相邻列网格线之间的间距。是网格中的一个单元。 +<img src="/858b9f1a36ccfd84b6804386bcaddd8a/terms-grid-cell-be3318de-d8a7-4d71-b482-ae5ac5984977.svg"> +grid area 四条网格线包围的总空间。网格区域可以由任意数量的网格单元组成。 +<img src="/fd4eb4c15ee96cda391cb869122a6b3e/terms-grid-area-9036ea4e-c8bf-41e9-9681-fb9a8e04c11b.svg"> +<h1>网格容器</h1> +<hr> +通过 display 属性设置属性值为 grid 或 inline-grid 可以创建一个网格容器。网格容器中的所有子元素就会自动变成网格项目（grid item）。 +<h2>显式网格</h2> +使用 grid-template-columns 和 grid-template-rows 属性可以显式的设置一个网格的列和行。 +<ul> +<li>grid-template-rows 指定的每个值可以创建每行的高度。</li> +<li> +grid-template-columns 指定的每个值可以创建每行的列宽。 +<div class="gatsby-highlight" data-language="css"><pre class="language-css"><code class="language-css">.container { +grid-template-columns: 40px 50px auto 50px 40px; +grid-template-rows: 25% 100px auto; +}</code></pre></div> +<img src="/57713be2cf9b38a714105db8e0a517a9/template-columns-rows-01-9ff80498-a9b2-4059-bdd1-e1bca49a62b0.svg"> +</li> +<li> +fr 单位代表网格容器中可用的空间。 +<div class="gatsby-highlight" data-language="text"><pre class="language-text"><code class="language-text">grid-template-columns: 1fr 1fr 2fr</code></pre></div> +该示例中，网格容器分成了4等份。当 fr 和其它长度单位的值结合在一起的时候，fr 是基于网格容器可用空间来计算。 +</li> +<li> +grid-template-areas +通过引用用grid - area属性指定的网格区域的名称来定义网格模板。 +</li> +<li>minmax 通过 minmax() 函数来创建网格轨道的最小或最大尺寸。</li> +<li>repeat 使用 repeat() 创建重复的网格轨道。</li> +</ul> +<h2>间距</h2> +<ul> +<li>column-gap 创建列与列之间的间距。</li> +<li>row-gap 创建行与行之间的间距。</li> +<li>gap 上面两属性的缩写形式，默认值是0。</li> +</ul> +<h2>容器内项目对齐</h2> +<h3>justify-items</h3> +沿内联(行)轴对齐网格项目。此值适用于容器内的所有网格项目。 +<ul> +<li>start</li> +<li>center</li> +<li>end</li> +<li>stretch(default)</li> +</ul> +<h3>align-items</h3> +沿着块(列)轴对齐网格项目。此值适用于容器内的所有网格项目。 +<ul> +<li>start</li> +<li>center</li> +<li>end</li> +<li>stretch(default)</li> +</ul> +<h1>网格项目</h1> +<hr> +<h2>通过参考特定的网格线来确定网格项目在网格中的位置。</h2> +<ul> +<li>grid-column-start</li> +<li>grid-column-end</li> +<li>grid-column</li> +<li>grid-row-start</li> +<li>grid-row-end</li> +<li> +grid-row +<div class="gatsby-highlight" data-language="css"><pre class="language-css"><code class="language-css">.item-a { +grid-column-start: 2; +grid-column-end: five; +grid-row-start: row1-start; +grid-row-end: 3; +}</code></pre></div> +<img src="/2ae7389f495ed49191f4bdc614afa28c/grid-column-row-start-end-01-08ab8475-9f06-46ed-a2c0-f3c3c451e677.svg"> +</li> +</ul> +<h2>项目对齐</h2> +<h3>justify-self</h3> +沿内联(行)轴对齐单元格内的网格项目。此值适用于单个单元格内的网格项目。 +<ul> +<li>start</li> +<li>center</li> +<li>end</li> +<li>stretch(default)</li> +</ul> +<h3>align-self</h3> +沿着块(列)轴对齐单元格内的网格项目。此值适用于单个网格项目内的内容。 +<ul> +<li>start</li> +<li>center</li> +<li>end</li> +<li>stretch(default)</li> +</ul> +<hr> +<ul> +<li>auto-fill 当容器的大小超过所有组合项目的大小时，auto-fill 会不断插入空行或空栏并将项目推到一边。</li> +<li>auto-fit 当容器的大小超过所有组合项目的大小时，auto-fit 会折叠这些空行或空栏并拉伸项目以适应容器的大小。</li> +</ul> +<h3>增加 fallback support</h3> +<ol> +<li> +先写回退代码，然后使用较新属性覆写。 +<div class="gatsby-highlight" data-language="css"><pre class="language-css"><code class="language-css">.selector {property: fallback-value;property: actual-value;}</code></pre></div> +</li> +<li> +先写回退代码，然后在 <code class="language-text">@support</code> 中覆写。如果需要的话可以在 <code class="language-text">@support</code> 中重置属性查看效果。 +<div class="gatsby-highlight" data-language="css"><pre class="language-css"><code class="language-css">.selector {property: fallback-value;}@supports (display: grid) {.selector {property: actual-value;}}</code></pre></div> +</li> +<li> +在 <code class="language-text">@support</code> 中写所有 css 代码。 +<div class="gatsby-highlight" data-language="css"><pre class="language-css"><code class="language-css">@supports not (display: grid) {.selector {property: fallback-value;}}@supports (display: grid) {.selector {property: actual-value;}}</code></pre></div> +<h3>兼容性</h3> +</li> +</ol> + + <a + class="gatsby-resp-image-link" + href="/static/28d9034d7df3f4bc5bd1a6af7a04e5c8/a0b80/grid_-fc98a513-1266-4780-a4bf-ec8ba04cf16c.png" + style="display: block" + target="_blank" + rel="noopener" + > + + + <span + class="gatsby-resp-image-background-image" + style="padding-bottom: 29.054054054054056%; position: relative; bottom: 0; left: 0; background-image: url('data:image/png;base64,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'); background-size: cover; display: block;" + > + <img + class="gatsby-resp-image-image" + style="width: 100%; height: 100%; margin: 0; vertical-align: middle; position: absolute; top: 0; left: 0; box-shadow: inset 0px 0px 0px 400px white;" + alt="grid fc98a513 1266 4780 a4bf ec8ba04cf16c" + title="" + src="/static/28d9034d7df3f4bc5bd1a6af7a04e5c8/fcda8/grid_-fc98a513-1266-4780-a4bf-ec8ba04cf16c.png" + srcset="/static/28d9034d7df3f4bc5bd1a6af7a04e5c8/12f09/grid_-fc98a513-1266-4780-a4bf-ec8ba04cf16c.png 148w, +/static/28d9034d7df3f4bc5bd1a6af7a04e5c8/e4a3f/grid_-fc98a513-1266-4780-a4bf-ec8ba04cf16c.png 295w, +/static/28d9034d7df3f4bc5bd1a6af7a04e5c8/fcda8/grid_-fc98a513-1266-4780-a4bf-ec8ba04cf16c.png 590w, +/static/28d9034d7df3f4bc5bd1a6af7a04e5c8/efc66/grid_-fc98a513-1266-4780-a4bf-ec8ba04cf16c.png 885w, +/static/28d9034d7df3f4bc5bd1a6af7a04e5c8/a0b80/grid_-fc98a513-1266-4780-a4bf-ec8ba04cf16c.png 955w" + sizes="(max-width: 590px) 100vw, 590px" + /> + + + + </a> + +<h3>@supports</h3> +<div class="gatsby-highlight" data-language="css"><pre class="language-css"><code class="language-css"> @supports <supports_condition> {/* specific rules */}</code></pre></div> +<blockquote> +一个支持条件是由一个或者多个不同的逻辑操作符组成的表达式声明组合而成的。使用小括号可以调整这些表达式之间的优先级。 +</blockquote> +<h3>not 操作符</h3> +可以放在任何表达式的前面来产生一个新的表达式，为原表达式的值的否定。 +<div class="gatsby-highlight" data-language="css"><pre class="language-css"><code class="language-css"> not (transform-origin: 2px)</code></pre></div> +<h3>and 操作符</h3> +用来将两个原始的表达式做逻辑与后生成一个新的表达式。 +<div class="gatsby-highlight" data-language="css"><pre class="language-css"><code class="language-css"> (display: table-cell) and (display: list-item)</code></pre></div> +<h3>or 操作符</h3> +<div class="gatsby-highlight" data-language="css"><pre class="language-css"><code class="language-css"> ( transform-style: preserve ) or ( -moz-transform-style: preserve )</code></pre></div> +<h2>参考</h2> +<a href="http://www.ruanyifeng.com/blog/2019/03/grid-layout-tutorial.html" target="_blank" rel="nofollow noopener noreferrer">CSS Grid 网格布局教程</a> +<a href="https://css-tricks.com/snippets/css/complete-guide-grid" target="_blank" rel="nofollow noopener noreferrer">A Complete Guide to Grid</a><![CDATA[sass 概述]]>https://memory9.github.io/sass-learning/https://memory9.github.io/sass-learning/Mon, 16 Sep 2019 00:00:00 GMTsass 是现在非常流行的 css 预处理器，本文介绍了一些 sass 的基础用法。 +<h2>使用变量</h2> +sass 使用<code class="language-text">$</code>来标识变量。比如 <code class="language-text">$basic-border: 1px solid black;</code> +变量可以在 css 规则块定义之外存在。如果变量定义在块内，就只能在块内使用。 +<div class="gatsby-highlight" data-language="scss"><pre class="language-scss"><code class="language-scss"> $red-color: red; + .nav { + $nav-width: 100px; + width: $nav-width; + color: $red-color; + }</code></pre></div> +sass 中声明变量时，也可以引用其他变量 +<div class="gatsby-highlight" data-language="scss"><pre class="language-scss"><code class="language-scss"> $highlight-color: #777; + $highlight-border: 1px solid $highlight-color; + .highlight { + border: $highlight-border; + }</code></pre></div> +<h2>嵌套 css</h2> +例如： +<div class="gatsby-highlight" data-language="scss"><pre class="language-scss"><code class="language-scss"> .article { + .title { + font-size: 20px; + } + + .body { + color: black; + + .quote { + color: #777; + } + } + }</code></pre></div> +这样避免了既重复写选择器，又使得样式的可读性变得更高。 +<h3>父选择器标识符 &</h3> +一般情况下，sass 会在解开一个嵌套规则时，将父选择器通过一个空格连接到子选择器的前面。但这种方式在写<code class="language-text">:hover</code>这样的伪类时便不能达到想要的效果。 +解决方法是使用父选择器标识符<code class="language-text">&</code>。当包含父选择器标识符的嵌套规则被打开时，它不会像后代选择器那样进行拼接，而是<code class="language-text">&</code>被父选择器直接替换. +<div class="gatsby-highlight" data-language="scss"><pre class="language-scss"><code class="language-scss"> a { + color: blue; + &:hover { + color: red; + } + } + + /*编译后*/ + a { color: blue;} + a:hover { color: red;}</code></pre></div> +父选择器标识符还可以用于在父选择器之前添加选择器。 +<div class="gatsby-highlight" data-language="scss"><pre class="language-scss"><code class="language-scss"> .select { + color: red; + body & { + color: blue; + } + } + + /*编译后*/ + .select { color: red; } + body .select { color: green; }</code></pre></div> +<h3>群组选择器嵌套</h3> +<div class="gatsby-highlight" data-language="scss"><pre class="language-scss"><code class="language-scss"> .container { + h1, h2, h3 { + margin: 0; + } + } + /*编译后*/ + .container h1, .container h2, .container h3 { + margin: 0; + }</code></pre></div> +<h3>>、+ 和 ~ 子组合选择器和同层组合选择器</h3> +<ul> +<li><code class="language-text">></code> 选择一个元素下紧跟的直接子元素</li> +<li><code class="language-text">+</code> 选择一个元素后面紧跟的同层指定元素</li> +<li><code class="language-text">~</code> 选择一个元素后所有的同层指定元素</li> +</ul> +<h3>嵌套属性</h3> +规则是：把属性名从中划线<code class="language-text">-</code>的地方断开，在根属性后边添加一个冒号<code class="language-text">:</code>，紧跟一个<code class="language-text">{ }</code>块，把子属性部分写在这个<code class="language-text">{ }</code>块中。 +<div class="gatsby-highlight" data-language="scss"><pre class="language-scss"><code class="language-scss"> item { + border: { + style: solid; + width: 1px; + color: #777; + } + }</code></pre></div> +<h2>导入 sass 文件</h2> +<ol> +<li>使用 sass 部分文件 +sass 局部文件的文件名以下划线开头。这样，sass 就不会在编译时单独编译这个文件输出 css，而只把这个文件用作导入。比如要导入一个<code class="language-text">_night-sky.scss</code>的文件，只需要在样式表中写<code class="language-text">@import 'night-sky'</code>。</li> +<li> +默认变量值 +一般情况下，你反复声明一个变量，只有最后一处声明有效且它会覆盖前边的值。 +使用 sass 的<code class="language-text">!default</code>标签可以设置变量的默认值，如果该变量被声明赋值了就使用声明的值，否则使用默认值。 +<div class="gatsby-highlight" data-language="scss"><pre class="language-scss"><code class="language-scss"> $fancy-width: 400px !default; + .fancy { + width: $fancy-width; + }</code></pre></div> +</li> +<li>嵌套导入 +跟原生的 css 不同，sass 允许<code class="language-text">@import</code>命令写在 css 规则内。这种导入方式下，生成对应的 css 文件时，局部文件会被直接插入到 css 规则内导入它的地方。</li> +<li>原生的 css 导入</li> +</ol> +<h2>注释</h2> +sass 另外提供了一种不同于 css 标准注释格式<code class="language-text">/* ... */</code>的注释语法，即静默注释，其内容不会出现在生成的 css 文件中。静默注释的语法跟 JavaScript、Java 等类 C 的语言中单行注释的语法相同，它们以<code class="language-text">//</code>开头，注释内容直到行末。 +<div class="gatsby-highlight" data-language="scss"><pre class="language-scss"><code class="language-scss"> body { + color: #333; // 这种注释内容不会出现在生成的css文件中 + padding: 0; /* 这种注释内容会出现在生成的css文件中 */ + }</code></pre></div> +<h2>混合器</h2> +<blockquote> +通过 sass 的混合器实现大段样式的重用。 +</blockquote> +混合器使用<code class="language-text">@mixin</code>标识符定义，这个标识符给一大段样式赋予一个名字，这样就可以通过引用这个名字重用这段样式。 +<div class="gatsby-highlight" data-language="scss"><pre class="language-scss"><code class="language-scss"> @mixin rounded-corners { + -moz-border-radius: 5px; + -webkit-border-radius: 5px; + border-radius: 5px; + }</code></pre></div> +然后就可以在样式表中通过<code class="language-text">@include</code>来使用这个混合器，<code class="language-text">@include</code>调用会把混合器中的所有样式提取出来放在<code class="language-text">@include</code>被调用的地方。 +<div class="gatsby-highlight" data-language="scss"><pre class="language-scss"><code class="language-scss"> .notice { + background-color:green; + @include rounded-corners; + }</code></pre></div> +<ol> +<li>是否使用混合器 +判断一组属性是否应该组合成一个混合器，一条经验法则就是能否为这个混合器想出一个好的名字。。。</li> +<li>混合器中的 css 规则 +混合器中除了可以包含属性，还可以包含 css 规则。</li> +<li> +混合器的传参 +混合器并不一定总得生成相同的样式。可以通过在<code class="language-text">@include</code>混合器时给混合器传参，来定制混合器生成的精确样式。 +<div class="gatsby-highlight" data-language="scss"><pre class="language-scss"><code class="language-scss"> @mixin link-colors($normal, $hover, $visited) { + color: $normal; + &:hover { color: $hover; } + &:visited { color: $visited; } + } + + a { + @include link-colors(blue, red, green); + }</code></pre></div> +sass允许通过语法<code class="language-text">$name: value</code>的形式指定每个参数的值。 +<div class="gatsby-highlight" data-language="scss"><pre class="language-scss"><code class="language-scss"> a { + @include link-colors( + $normal: blue; + $hover: red; + $visited: green; + ) + }</code></pre></div> +</li> +<li>默认参数 +为了在<code class="language-text">@include</code>混合器时不必传入所有的参数，我们可以给参数指定一个默认值。参数默认值使用<code class="language-text">$name: default-value</code>的声明形式，默认值可以是任何有效的 css 属性值，甚至是其他参数的引用。</li> +</ol> +<h2>选择器继承</h2> +选择器继承是说一个选择器可以继承为另一个选择器定义的所有样式。 +<div class="gatsby-highlight" data-language="scss"><pre class="language-scss"><code class="language-scss"> //通过选择器继承继承样式 + .error { + border: 1px red; + background-color: #fdd; + } + .seriousError { + @extend .error; + border-width: 3px; + }</code></pre></div><![CDATA[exploring npm]]>https://memory9.github.io/exploring-npm/https://memory9.github.io/exploring-npm/Fri, 05 Jul 2019 00:00:00 GMTnpm 是目前默认的 Node 包管理工具，在 javaScript 项目开发中得到了广泛使用。 +<h2>node_modules</h2> +npm 使用 <code class="language-text">npm install</code> 命令安装模块到<code class="language-text">node_modules</code> 目录下。 +<div class="gatsby-highlight" data-language="shell"><pre class="language-shell"><code class="language-shell">npm install <packageName></code></pre></div> +<blockquote> +<code class="language-text">node_modules</code> 路径查找机制：默认情况下，模块查找对应的依赖包时，<code class="language-text">nodejs</code> 会尝试从当前模块所在的目录开始，尝试在它的 <code class="language-text">node_modules</code> 文件夹里加载相应的模块，如果没有找到，那么就再向上一级目录移动，直到到达全局安装路径中的 <code class="language-text">node_modules</code> 为止。 +</blockquote> +<h3>npm 5.x 安装组织 node_modules</h3> +<ul> +<li> +扁平化安装 +按照 <code class="language-text">package.json</code> 里依赖的顺序依次解析，遇到新的包就将其安装在第一级目录，后续安装时如果遇到一级目录已经存在的包，会按照约定版本进行判断。如果符合版本约定就会忽略，否则会将其依次安装在依赖包的目录下。 +</li> +<li> +增加了 <code class="language-text">package-lock.json</code> 文件 +用以精确描述 <code class="language-text">node_modules</code> 目录下所有的包的树状依赖结构，每个包的版本号都是完全精确的。 +<div class="gatsby-highlight" data-language="json"><pre class="language-json"><code class="language-json">"glob": { +"version": "7.1.3", +"resolved": "https://registry.npmjs.org/glob/-/glob-7.1.3.tgz", +"integrity": "sha512-vcfuiIxogLV4DlGBHIUOwI0IbrJ8HWPc4MU7HzviGeNho/UJDfi6B5p3sHeWIQ0KGIU0Jpxi5ZHxemQfLkkAwQ==", +"requires": { + "fs.realpath": "^1.0.0", + "inflight": "^1.0.4", + "inherits": "2", + "minimatch": "^3.0.4", + "once": "^1.3.0", + "path-is-absolute": "^1.0.0" +} +}</code></pre></div> +以 <code class="language-text">glob</code> 为例，<code class="language-text">package-lock.json</code> 主要由以下几个字段进行描述： +<ul> +<li><code class="language-text">version</code> 包唯一的版本号</li> +<li><code class="language-text">resolved</code> 安装源</li> +<li><code class="language-text">integrity</code> hash 值，表明包的完整性，用来验证包是否已经失效</li> +<li><code class="language-text">dev</code> 如果为true，则此依赖关系仅是顶级模块的开发依赖关系或者是一个的传递依赖关系</li> +<li><code class="language-text">requires</code> 该依赖包所需要的依赖项</li> +</ul> +</li> +</ul> +<h2>依赖包</h2> +<h3>依赖包的分类</h3> +<ul> +<li> +dependencies 业务依赖 +依赖项属于线上的一部分，例如 <code class="language-text">react</code>、<code class="language-text">material-ui</code> 等等，供生产环境使用。 +<div class="gatsby-highlight" data-language="shell"><pre class="language-shell"><code class="language-shell">npm [install|-i] <packageName> [--save|-S]</code></pre></div> +<blockquote> +npm 5.x 之后，直接执行 <code class="language-text">npm i <packageName></code> 即可 +</blockquote> +</li> +<li> +devDependencies 开发依赖 +依赖项只在项目开发时需要，不属于线上代码的一部分，例如 <code class="language-text">webpack</code>、<code class="language-text">babel</code> 等等 +<div class="gatsby-highlight" data-language="shell"><pre class="language-shell"><code class="language-shell">npm [install|-i] <packageName> [--save-dev|-D]</code></pre></div> +</li> +<li> +peerDependencies 同伴依赖 +提示宿主环境安装插件在 <code class="language-text">peerDependencies</code> 中指定依赖的包。 +</li> +<li> +bundledDependencies / bundleDependencies 打包依赖 +这种依赖跟 <code class="language-text">npm pack</code> 打包命令相关，必须先在前两种依赖中声明。 +</li> +<li>optionalDependencies 可选依赖</li> +</ul> +<h3>依赖包的版本号</h3> +采用 <a href="https://semver.org/lang/zh-CN/" target="_blank" rel="nofollow noopener noreferrer">semver</a> 规范作为依赖版本管理方案，格式一般为：主版本号.次版本号.修订号(x.y.z) +<ul> +<li> +主版本号 major version +可能是颠覆性的改动，导致可能会与低版本的 API 或者用法不兼容。 +</li> +<li> +次版本号 minor version +改动通常兼容同一个大版本内的 API 和用法。 +<blockquote> +如果大版本号是 0，表示处于开发初始阶段，一切都可能被改变。 +</blockquote> +</li> +<li> +修订号 patch +一般用于修复 bug 和细微的变更，通常要保持向前兼容。 +</li> +</ul> +常见的版本格式： +<ul> +<li>”1.2.3” 精确版本号</li> +<li>“^1.2.3” ^ 能够兼容除了最左侧非 0 版本号之外的其他变化</li> +<li>“~1.2.3” ~ 如果列出了次版本号，那么只兼容补丁的修改；如果没有列出次版本号，那么兼容 2、3 位的修改</li> +<li> +“1.x”、“1.X”、“1.”、“1”、“\” +<blockquote> +”*” 、“x” 或者（空）表示可以匹配任何版本。 + “1.x”, “1.*” 和 “1” 表示匹配主版本号为 “1” 的所有版本，因此等价于 ”>= 1.0.0 < 2.0.0”。 + “1.2.x”, “1.2.*” 和 “1.2” 表示匹配版本号以 “1.2” 开头的所有版本，因此等价于 ”>= 1.2.0 < 1.3.0”。 +</blockquote> +</li> +<li> +带预发布关键词的版本号 +<blockquote> +alpha(α)：预览版，或者叫内部测试版；一般不向外部发布，会有很多bug；一般只有测试人员使用。 beta(β)：测试版，或者叫公开测试版；这个阶段的版本会一直加入新的功能；在alpha版之后推出。 rc(release candidate)：最终测试版本；可能成为最终产品的候选版本，如果未出现问题则可发布成为正式版本。 +</blockquote> +</li> +</ul> +<h3>依赖包的版本管理</h3> +<div class="gatsby-highlight" data-language="shell"><pre class="language-shell"><code class="language-shell"># 更新某模块主版本下的最新版本 +npm install <packageName> + +# 更新到指定版本号 +npm install <packageName@x.x.x> + +# 卸载某个模块 +npm uninstall <packageName></code></pre></div> +<blockquote> +升级和卸载依赖包时，尽量通过命令实现，避免手动修改 <code class="language-text">package.json</code> 中的版本号，一定不要手动修改 <code class="language-text">package-lock.json</code> +</blockquote> +<h2>npm scripts 脚本</h2> +npm 可以在 <code class="language-text">package.json</code> 文件中，使用 <code class="language-text">scripts</code> 字段定义脚本命令。 +<div class="gatsby-highlight" data-language="json"><pre class="language-json"><code class="language-json">{ + "scripts": { + "build": "node build.js" + } +}</code></pre></div> +<h3>基本原理</h3> +每次执行 <code class="language-text">npm run</code> 时，会自动新建一个 Shell，在这个 Shell 中执行指定的脚本命令。 +<blockquote> +<code class="language-text">npm run</code> 新建的 Shell，会将当前目录中的 node_modules/.bin 子目录加入 <code class="language-text">PATH</code> 变量中，执行结束后再将 <code class="language-text">PATH</code> 变量恢复原样。 +</blockquote> +因此，当前目录的 <code class="language-text">node_modules/.bin</code> 子目录中的所有脚本，都可以直接使用脚本名调用，而不需要加上路径。 +<blockquote> +<code class="language-text">PATH</code>环境变量，是告诉系统，当要求系统运行一个程序而没有告诉它程序所在的完整路径时，系统除了在当前目录下面寻找此程序外，还应到哪些目录下去寻找。 +</blockquote> +<h3>传参</h3> +除了第一个可执行的命令，以空格分割的任何字符串（除了一些 shell 的语法）都是参数，并且都能通过<code class="language-text">process.argv</code> 属性访问。 +<blockquote> +process.argv属性返回一个数组，这个数组包含了启动node进程时的命令行参数。第一个元素为启动node 进程的可执行文件的绝对路径名<a href="https://link.juejin.im?target=http%3A%2F%2Fnodejs.cn%2Fapi%2Fprocess.html%23process_process_execpath" target="_blank" rel="nofollow noopener noreferrer">process.execPath</a>，第二个元素为当前执行的JavaScript文件路径。剩余的元素为其他命令行参数。 +</blockquote> +<div class="gatsby-highlight" data-language="shell"><pre class="language-shell"><code class="language-shell">npm run serve --params # 参数params将转化成process.env.npm_config_params = true +npm run serve --params=123 # 参数params将转化成process.env.npm_config_params = 123 +npm run serve -params # 等同于--params参数 + +npm run serve -- --params # 将--params参数添加到process.env.argv数组中 +npm run serve params # 将params参数添加到process.env.argv数组中 +npm run serve -- params # 将params参数添加到process.env.argv数组中</code></pre></div> +<h3>通配符</h3> +npm 脚本即 Shell 脚本，所以可以使用 Shell 通配符。 +<div class="gatsby-highlight" data-language="shell"><pre class="language-shell"><code class="language-shell">"lint": "jshint *.js" +"lint": "jshint **/*.js"</code></pre></div> +<code class="language-text">*</code> 表示任意文件名，<code class="language-text">**</code> 表示任意一层子目录。 +<h3>多命令运行</h3> +<h4>串行执行</h4> +<div class="gatsby-highlight" data-language="shell"><pre class="language-shell"><code class="language-shell">npm run script1 && npm run script2</code></pre></div> +<blockquote> +只要一个命令执行失败，则整个脚本终止。 +</blockquote> +<h4>并行执行</h4> +多个任务可以同时的平行执行，使用 <code class="language-text">&</code> 符号来连接。 +<div class="gatsby-highlight" data-language="shell"><pre class="language-shell"><code class="language-shell">npm run script1 & npm run script2</code></pre></div> +<h3>env 环境变量</h3> +执行 <code class="language-text">npm scripts</code> 时，<code class="language-text">npm</code> 会设置一些特殊的 <code class="language-text">env</code> 环境变量。<code class="language-text">package.json</code> 中的所有字段都会被设置为以 <code class="language-text">npm_package_</code> 开头的环境变量。例如使用 <code class="language-text">process.env.npm_package_name</code> 可以获取到 <code class="language-text">package.json</code> 中 <code class="language-text">name</code> 字段的值。<code class="language-text">process.env.npm_lifecycle_event</code> 表示当前正在运行的脚本名称。 +<blockquote> +这些环境变量都只能在 npm run 的脚本执行环境内拿到。 +</blockquote> +<h3>指令钩子</h3> +npm 脚本有 <code class="language-text">pre</code> 和 <code class="language-text">post</code> 两个钩子。例如：<code class="language-text">build</code> 脚本命令的钩子就是 <code class="language-text">prebuild</code> 和 <code class="language-text">postbuild</code>。 +在执行 <code class="language-text">npm run build</code> 命令时，就会依次执行 <code class="language-text">npm run prebuild</code>、<code class="language-text">npm run build</code>、<code class="language-text">npm run postbuild</code>。 +可以结合 <code class="language-text">process.env.npm_lifecycle_event</code> 一起使用。 +<h2>npm 配置项</h2> +<h3>优先级</h3> +<ol> +<li>Command Line</li> +<li>env 环境变量</li> +<li> +npmrc 文件 +<ul> +<li>项目级</li> +</ul> + 只作用在本项目下，其他项目中不生效。 +<ul> +<li>用户级</li> +</ul> + <code class="language-text">~/.npmrc</code> 使用 <code class="language-text">npm config get userconfig</code> 可以查看存放的路径。 +<ul> +<li>全局级</li> +</ul> + <code class="language-text">$PREFIX/etc/npmrc</code> 使用 <code class="language-text">npm config get globalconfig</code> 可以查看存放的路径。 +</li> +</ol> +<h3>npm config 指令</h3> +<ul> +<li>set</li> +</ul> +<div class="gatsby-highlight" data-language="shell"><pre class="language-shell"><code class="language-shell"># 如果 key 不存在，那么会将新增到配置中；如果省略 value，那么会将 key 设置为 true +npm config set <key> <value> [-g|--global] + +# 指定 npm 包来源 +npm config set registry <url></code></pre></div> +<ul> +<li>get</li> +</ul> +<div class="gatsby-highlight" data-language="shell"><pre class="language-shell"><code class="language-shell">npm config get <key></code></pre></div> +<ul> +<li>delete</li> +</ul> +<div class="gatsby-highlight" data-language="shell"><pre class="language-shell"><code class="language-shell">npm config delete <key> # 不能删除项目级的 .npmrc 文件里的配置项</code></pre></div> +<ul> +<li>list</li> +</ul> +<div class="gatsby-highlight" data-language="shell"><pre class="language-shell"><code class="language-shell">npm config list [-l|--json] # 查看所有配置项</code></pre></div> +<ul> +<li>edit</li> +</ul> +<div class="gatsby-highlight" data-language="shell"><pre class="language-shell"><code class="language-shell">npm config edit [-g|--global] # 编辑器中打开配置文件</code></pre></div> +更多默认配置参见<a href="https://link.juejin.im/?target=https%3A%2F%2Fdocs.npmjs.com%2Fmisc%2Fconfig" target="_blank" rel="nofollow noopener noreferrer">npm config</a> +<h2>npm 工程管理</h2> +<h3>项目版本号管理</h3> +<code class="language-text">package.json</code> 中的 <code class="language-text">version</code> 字段代表的是该项目的版本号。 +尽量使用 <code class="language-text">npm version</code> 指令来自动更新 <code class="language-text">version</code> +<div class="gatsby-highlight" data-language="shell"><pre class="language-shell"><code class="language-shell">npm version (v)1.2.3 # 显示设置版本号为 1.2.3 +npm version major # 大版本号加 1，其余版本号归 0 +npm version minor # 小版本号加 1，修订号归 0 +npm version patch # 修订号加 1</code></pre></div> +还可以创建预发布版本： +<div class="gatsby-highlight" data-language="shell"><pre class="language-shell"><code class="language-shell"># 当前版本号为 1.2.3 +npm version prepatch # 版本号变为 1.2.4-0，也就是 1.2.4 版本的第一个预发布版本 +npm version preminor # 版本号变为 1.3.0-0，也就是 1.3.0 版本的第一个预发布版本 +npm version premajor # 版本号变为 2.0.0-0，也就是 2.0.0 版本的第一个预发布版本 +npm version prerelease # 版本号变为 2.0.0-1，也就是使预发布版本号加一</code></pre></div> +在 git 环境中，执行 npm version 修改版本号之后，还会默认执行 git add -> git commit -> git tag 操作 +其 commit message 默认是自动修改完成的版本号，可以通过添加 -m/—message 选项来自定义 commit message： +<div class="gatsby-highlight" data-language="shell"><pre class="language-shell"><code class="language-shell">npm version minor -m "feat(version): upgrade to %s for reasons" # %s 会自动替换为新版本号</code></pre></div> +如果不想在 git 仓库中打上版本 tag，可以在指令中使用 <code class="language-text">--no-git-tag-version</code> +如果想默认不影响 git 仓库，可以在 npm 设置中禁止： +<div class="gatsby-highlight" data-language="shell"><pre class="language-shell"><code class="language-shell">npm config set git-tag-version false # 不自动打 tag +npm config set commit-hooks false # 不自动 commit</code></pre></div> +<h3>域级包管理</h3> +<code class="language-text">package.json</code> 中的依赖有两种形式： +<div class="gatsby-highlight" data-language="json"><pre class="language-json"><code class="language-json">"devDependencies": { + "@commitlint/cli": "^7.2.1", + "commitizen": "^3.0.4" +}</code></pre></div> +以 <code class="language-text">@</code> 开头的包名，是一个<a href="https://docs.npmjs.com/misc/scope#publishing-public-scoped-packages-to-the-public-npm-registry" target="_blank" rel="nofollow noopener noreferrer">域级包</a>，作用是将一些 packages 集中在一个命名空间下，一方面可以集中管理，另一方面也可以防止与其他依赖包产生命名冲突。 +<h4>域级包的发布</h4> +<ul> +<li>在项目的 package.json 的 name 属性中添加 scope 相关的声明，可以通过指令添加：</li> +</ul> +<div class="gatsby-highlight" data-language="shell"><pre class="language-shell"><code class="language-shell">npm init --scope=scopeName -y</code></pre></div> +package.json 变为： +<div class="gatsby-highlight" data-language="json"><pre class="language-json"><code class="language-json">{ + "name": "@scopeName/package" +}</code></pre></div> +<ul> +<li>由于用 <code class="language-text">@</code> 声明了该包，npm 会将其认定为私有包，而在 npm 上托管私有包需要收费，所以可以在发布时添加<code class="language-text">--access=public</code> 参数告知 <code class="language-text">npm</code> 这不是私有包。</li> +</ul> +<div class="gatsby-highlight" data-language="shell"><pre class="language-shell"><code class="language-shell">npm publish --access=public</code></pre></div> +<blockquote> +安装域级包时需要按照域级包全名来安装。 +</blockquote> +<h2>其它</h2> +<h3>模块全局化</h3> +假设你在开发一个模块 <code class="language-text">A</code>，同时需要在另外一个项目 <code class="language-text">B</code> 中测试它，当然你可以将该模块的代码拷贝到需要使用它的项目中，但这也不是理想的方法，可以在模块 <code class="language-text">A</code> 的目录下执行： +<div class="gatsby-highlight" data-language="shell"><pre class="language-shell"><code class="language-shell">npm link</code></pre></div> +<code class="language-text">npm link</code> 命令通过链接目录和可执行文件，实现任意位置的<code class="language-text">npm</code>包命令的全局可执行。 +<code class="language-text">npm link</code> 主要做了两件事： +<ol> +<li>为目标 <code class="language-text">npm</code> 模块创建软链接，将其链接到全局 <code class="language-text">node</code> 模块安装路径 <code class="language-text">/usr/local/lib/node_modules/</code></li> +<li>为目标 <code class="language-text">npm</code>模块的可执行 <code class="language-text">bin</code> 文件创建软链接，将其链接到全局 <code class="language-text">node</code> 命令安装路径 <code class="language-text">/usr/local/bin/</code></li> +</ol> +<h3>依赖锁定</h3> +<code class="language-text">npm</code> 默认安装模块时，会通过脱字符 <code class="language-text">^</code> 来限定所安装模块的主版本号。可以配置 <code class="language-text">npm</code> 通过波浪符 <code class="language-text">~</code> 来限定安装模块版本号： +<div class="gatsby-highlight" data-language="shell"><pre class="language-shell"><code class="language-shell">npm config set save-prefix="~"</code></pre></div> +也可以配置仅安装精确版本号的模块 +<div class="gatsby-highlight" data-language="shell"><pre class="language-shell"><code class="language-shell">npm config set save-exact true</code></pre></div> +<h3>参考</h3> +<ul> +<li><a href="https://juejin.im/post/5d08d3d3f265da1b7e103a4d" target="_blank" rel="nofollow noopener noreferrer">前端工程化（5）：你所需要的npm知识储备都在这了</a></li> +<li><a href="http://www.ruanyifeng.com/blog/2016/01/npm-install.html" target="_blank" rel="nofollow noopener noreferrer">npm 模块安装机制简介</a></li> +<li><a href="http://www.ruanyifeng.com/blog/2016/10/npm_scripts.html" target="_blank" rel="nofollow noopener noreferrer">npm scripts 使用指南</a></li> +</ul><![CDATA[Flexbox 布局]]>https://memory9.github.io/flex-box/https://memory9.github.io/flex-box/Thu, 16 May 2019 00:00:00 GMTFlex 是 Flexible Box 的缩写，意为弹性布局。Flex 布局适用于应用程序的组件和小规模布局。 +<h1>基本概念</h1> +采用 Flex 布局的元素称为 flex 容器（flex container），而其子元素则称为 flex 项目（flex items）。 + +<img src="https://i.loli.net/2018/07/26/5b598f7be9d37.png" alt="flex box"> +容器中有两根轴，分别是主轴（main axis）和交叉轴（cross axis）。 +项目默认沿着主轴排列，一个项目占据的主轴空间为 main size，占据的交叉轴空间为 cross size。 +<h1>容器属性</h1> +<ul> +<li> +<code class="language-text">flex-direction</code> 决定主轴的方向 +<ul> +<li>row（默认值）：水平，从左到右</li> +<li>row-reverse：水平，从右往左</li> +<li>column：垂直，从上到下</li> +<li>column-reverse：垂直，从下往上</li> +</ul> +</li> +<li> +<code class="language-text">flex-wrap</code> 决定当一条轴线排不下时，如何换行 +<ul> +<li>nowrap：不换行</li> +<li>wrap：换行，顺序从上到下</li> +<li>wrap-reverse：换行，从下往上（即第一行在下） +<img src="https://i.loli.net/2018/07/26/5b5995094f110.png" alt="wrap-reverse-demo"></li> +</ul> +</li> +<li> +<code class="language-text">flex-flow</code> 为 flex-direction 和 flex-wrap 的合并形式 +<div class="gatsby-highlight" data-language="css"><pre class="language-css"><code class="language-css">flex-flow: <'flex-direction> || <'flex-wrap'></code></pre></div> +默认值是 row nowrap +</li> +<li> +<code class="language-text">justify-content</code> 定义项目在主轴上的对齐方式 +<ul> +<li>flex-start：左对齐</li> +<li>flex-end：右对齐</li> +<li>center：居中</li> +<li>space-between：两端对齐，flex-item 之间的间距相等</li> +<li>space-around：每个 flex-item 两侧间隔相等，则项目之间的间隔是与边框间隔的两倍。</li> +</ul> +</li> +<li> +<code class="language-text">align-items</code> 定义项目在交叉轴上如何对齐 +<ul> +<li>flex-start：交叉轴起点对齐</li> +<li>flex-end：交叉轴终点对齐</li> +<li>center：交叉轴中点对齐</li> +<li>baseline：项目的第一行文字的基线对齐</li> +<li>stretch（默认值）：项目将拉伸撑满整个容器</li> +</ul> +</li> +<li> +<code class="language-text">align-content</code> 定义多根轴线的对齐方式 +<ul> +<li>flex-start：与交叉轴起点对齐</li> +<li>flex-end：与交叉轴终点对齐</li> +<li>center：与交叉轴的中点对齐</li> +<li>space-between：与交叉轴两端对齐，轴线之间间隔平均分布</li> +<li>space-around：每根轴线两侧的间隔都相等</li> +<li>stretch（默认值）：轴线占满整个交叉轴 +<img src="https://i.loli.net/2018/07/27/5b5a812c5d469.png" alt="align-content-demo"></li> +</ul> +</li> +</ul> +<h1>项目属性</h1> +<ul> +<li><code class="language-text">order</code> 定义项目的排列顺序。数值越小越靠前，默认是0</li> +<li><code class="language-text">flex-grow</code> 定义项目的放大比例，默认是0</li> +<li><code class="language-text">flex-shrink</code> 定义项目的缩小比例，默认为1，即如果剩余空间不足，该项目将缩小</li> +<li><code class="language-text">flex-basis</code> 定义项目占据的主轴空间（main size），浏览器根据该属性，计算主轴是否有多余空间。默认值是 auto</li> +<li><code class="language-text">flex</code> 是 [<‘flex-grow’><‘flex-shrink’><‘flex-basis’>] 的简写。默认值是 0 1 auto。快捷值：auto（1 1 auto）和 none（0 0 auto）</li> +<li><code class="language-text">align-self</code> 允许单个项目有不同的对齐方式，可以覆盖 align-items 属性，默认值是 auto，表示继承父元素的 align-items 属性，如果没有父元素则等同于 stretch</li> +</ul> +<hr> +参考示例： +<a href="https://codepen.io/LandonSchropp/pen/KpzzGo" target="_blank" rel="nofollow noopener noreferrer">骰子的布局</a> +参考来源： +<a href="https://css-tricks.com/snippets/css/a-guide-to-flexbox/" target="_blank" rel="nofollow noopener noreferrer">A Complete Guide to Flexbox</a> +[阮一峰 Flex 布局教程：语法篇]( \ No newline at end of file diff --git a/sass-learning/index.html b/sass-learning/index.html new file mode 100644 index 0000000..0bed1e2 --- /dev/null +++ b/sass-learning/index.html @@ -0,0 +1,163 @@ +sass 概述 | Cube Blog

Cube Blog

sass 概述

September 16, 2019 • ☕️ 4 min read

sass 是现在非常流行的 css 预处理器，本文介绍了一些 sass 的基础用法。

使用变量

sass 使用$来标识变量。比如 $basic-border: 1px solid black;

变量可以在 css 规则块定义之外存在。如果变量定义在块内，就只能在块内使用。

  $red-color: red;
+  .nav {
+    $nav-width: 100px;
+    width: $nav-width;
+    color: $red-color;
+  }

sass 中声明变量时，也可以引用其他变量

  $highlight-color: #777;
+  $highlight-border: 1px solid $highlight-color;
+  .highlight {
+    border: $highlight-border;
+  }

嵌套 css

例如：

  .article {
+    .title {
+      font-size: 20px;
+    }
+
+    .body {
+      color: black;
+
+      .quote {
+        color: #777;
+      }
+    }
+  }

这样避免了既重复写选择器，又使得样式的可读性变得更高。

父选择器标识符 &

解决方法是使用父选择器标识符&。当包含父选择器标识符的嵌套规则被打开时，它不会像后代选择器那样进行拼接，而是&被父选择器直接替换.

  a {
+    color: blue;
+    &:hover {
+      color: red;
+    }
+  }
+
+  /*编译后*/
+  a { color: blue;}
+  a:hover { color: red;}

父选择器标识符还可以用于在父选择器之前添加选择器。

  .select {
+    color: red;
+    body & {
+      color: blue;
+    }
+  }
+
+  /*编译后*/
+  .select { color: red; }
+  body .select { color: green; }

群组选择器嵌套

  .container {
+    h1, h2, h3 {
+      margin: 0;
+    }
+  }
+  /*编译后*/
+  .container h1, .container h2, .container h3 {
+    margin: 0;
+  }

>、+ 和 ~ 子组合选择器和同层组合选择器

> 选择一个元素下紧跟的直接子元素
+ 选择一个元素后面紧跟的同层指定元素
~ 选择一个元素后所有的同层指定元素

嵌套属性

规则是：把属性名从中划线-的地方断开，在根属性后边添加一个冒号:，紧跟一个{ }块，把子属性部分写在这个{ }块中。

  item {
+    border: {
+      style: solid;
+      width: 1px;
+      color: #777;
+    }
+  }

导入 sass 文件

使用 sass 部分文件 +sass 局部文件的文件名以下划线开头。这样，sass 就不会在编译时单独编译这个文件输出 css，而只把这个文件用作导入。比如要导入一个_night-sky.scss的文件，只需要在样式表中写@import 'night-sky'。
+
默认变量值 +一般情况下，你反复声明一个变量，只有最后一处声明有效且它会覆盖前边的值。 +使用 sass 的!default标签可以设置变量的默认值，如果该变量被声明赋值了就使用声明的值，否则使用默认值。
+
```
  $fancy-width: 400px !default;
+  .fancy {
+    width: $fancy-width;
+  }
```
+
嵌套导入 +跟原生的 css 不同，sass 允许@import命令写在 css 规则内。这种导入方式下，生成对应的 css 文件时，局部文件会被直接插入到 css 规则内导入它的地方。
原生的 css 导入

注释

  body {
+    color: #333; // 这种注释内容不会出现在生成的css文件中
+    padding: 0; /* 这种注释内容会出现在生成的css文件中 */
+  }

混合器

+
通过 sass 的混合器实现大段样式的重用。
+

混合器使用@mixin标识符定义，这个标识符给一大段样式赋予一个名字，这样就可以通过引用这个名字重用这段样式。

  @mixin rounded-corners {
+    -moz-border-radius: 5px;
+    -webkit-border-radius: 5px;
+    border-radius: 5px;
+  }

然后就可以在样式表中通过@include来使用这个混合器，@include调用会把混合器中的所有样式提取出来放在@include被调用的地方。

  .notice {
+    background-color:green;
+    @include rounded-corners;
+  }

是否使用混合器 +判断一组属性是否应该组合成一个混合器，一条经验法则就是能否为这个混合器想出一个好的名字。。。
混合器中的 css 规则 +混合器中除了可以包含属性，还可以包含 css 规则。

混合器的传参 +混合器并不一定总得生成相同的样式。可以通过在@include混合器时给混合器传参，来定制混合器生成的精确样式。

  @mixin link-colors($normal, $hover, $visited) {
+    color: $normal;
+    &:hover { color: $hover; }
+    &:visited { color: $visited; }
+  }
+
+  a {
+    @include link-colors(blue, red, green);
+  }

sass允许通过语法$name: value的形式指定每个参数的值。

  a {
+    @include link-colors(
+      $normal: blue;
+      $hover: red;
+      $visited: green;
+    )
+  }

默认参数 +为了在@include混合器时不必传入所有的参数，我们可以给参数指定一个默认值。参数默认值使用$name: default-value的声明形式，默认值可以是任何有效的 css 属性值，甚至是其他参数的引用。

选择器继承

选择器继承是说一个选择器可以继承为另一个选择器定义的所有样式。

  //通过选择器继承继承样式
+  .error {
+    border: 1px red;
+    background-color: #fdd;
+  }
+  .seriousError {
+    @extend .error;
+    border-width: 3px;
+  }

这个博客用于记录我个人所读所思所想，前端开发相关。

\ No newline at end of file diff --git a/sorting-common-algorithm-implement/index.html b/sorting-common-algorithm-implement/index.html new file mode 100644 index 0000000..0211c70 --- /dev/null +++ b/sorting-common-algorithm-implement/index.html @@ -0,0 +1,192 @@ +常见的排序算法及其实现 | Cube Blog

Cube Blog

常见的排序算法及其实现

April 10, 2020 • ☕️ 4 min read

本文记录常见的排序算法及其实现思路与代码。

基本的排序算法

冒泡排序

基本思想

给定一个数组，把数组里的元素都倒入水池中，这些元素通过相互之间的比较，按照大小顺序一个个像气泡一样浮出水面。

实现思路

代码

  // 假设从小到大排序
+  function bubbleSort(arr) {
+    const len = arr.length
+    for (let i = 0; i < len; i++) {
+      for (j = 0; j < len - 1 - i; j++) {
+        if (arr[j] > arr[j+1]) {
+          // 如果前一个元素大于后一个元素，就交换
+          [arr[j], arr[j+1]] = [arr[j+1], arr[j]]
+        }
+      }
+    }
+
+    return arr
+  }
+
+  bubbleSort([2, 1, 7, 9, 5, 8]) // [1, 2, 5, 7, 8, 9]

算法分析

时间复杂度：O(n2)

空间复杂度：O(1)

插入排序

基本思想

不断的将未排好序的数插入到已经排好序的部分

特点

对于插入排序，经过每一轮排序之后，数组前端的数都是排好序

代码

  function insertSort(arr) {
+    const len = arr.length
+    // 认为数组的第一项已经排好序了，所以从第二项开始进行遍历
+    for (let i = 1, j, current; i < len; i++) {
+      // 把当前 i 指向的值用 current 保存
+      current = arr[i]
+      for (j = i - 1; j >= 0 && arr[j] > current; j--) {
+        // j 内循环，和 current 值比较，若 j 所指向的值比 current 值大，则该数右移一位
+        arr[j+1] = arr[j]
+      }
+
+      // current 值应该插入的位置
+      arr[j+1] = current
+    }
+
+    return arr
+  }
+
+  insertSort([2, 1, 7, 9, 5, 8]) // [1, 2, 5, 7, 8, 9]

算法分析

时间复杂度：O(n2)

空间复杂度：O(1)

常考的排序算法

归并排序

基本思想

实现

一开始先把数组从中间划分成两个子数组，一直递归地把子数组划分成更小的子数组，直到子数组里面只有一个元素，才开始排序。

排序的方法就是按照大小顺序，合并两个元素，接着按照递归的返回顺序，不断地合并排好序的子数组，直到最后把整个数组的顺序排好。

代码

function merge(left, right) {
+  const result = []
+
+  while (left.length && right.length) {
+    if (left[0] <= right[0]) {
+      result.push(left.shift())
+    } else {
+      result.push(right.shift())
+    }
+  }
+
+  while (left.length) {
+    result.push(left.shift())
+  }
+
+  while (right.length) {
+    result.push(right.shift())
+  }
+
+  return result
+}
+
+function mergeSort(arr) {
+  if (arr.length <= 1) {
+    return arr
+  }
+
+  const pivotIndex = Math.floor(arr.length / 2)
+  const left = arr.slice(0, pivotIndex)
+  const right = arr.slice(pivotIndex)
+
+  return merge(mergeSort(left), mergeSort(right))
+}
+
+mergeSort([2, 1, 7, 9, 5, 8]) // [1, 2, 5, 7, 8, 9]

算法分析

时间复杂度：O(nlogn)

空间复杂度：O(n)

快速排序

基本思想

分治思想，自上而下

实现

把原始数组筛选成较小和较大的两个子数组，然后递归地排序两个子数组

代码

function quickSort(arr) {
+  if (arr.length <= 1) {
+    return arr
+  }
+
+  const midIndex = Math.floor(arr.length / 2)
+  const midValue = arr.splice(midIndex, 1)[0]
+  const left = [], right = []
+  arr.forEach((v) => {
+    if (v <= midValue) {
+      left.push(v)
+    } else {
+      right.push(v)
+    }
+  })
+
+  return quickSort(left).concat(midValue, quickSort(right))
+}
+
+quickSort([2, 1, 7, 9, 5, 8]) // [1, 2, 5, 7, 8, 9]

算法分析

时间复杂度：O(nlogn)

空间复杂度：O(logn)

拓扑排序

其他的排序算法

堆排序

基本思想

堆可以视为一棵完全的二叉树（除了最底层之外，每一层都是满的），因此堆可以用数组来表示，每一个节点对应数组中的一个元素。

在数组起始位置为 0 时

父节点 i 的左子节点在位置2*i+1

父节点 i 的右子节点在位置2*i+2

子节点 i 的父节点在位置Math.floor((i - 1) / 2)

实现

最大堆调整（Max-Heapify）：从堆的末端非叶子节点开始作调整，使得子节点永远小于父节点

创建最大堆（Build-Max-Heap）：将堆所有数据重新排序，使其成为最大堆

堆排序（Heap-Sort）：移除位在第一个数据的根节点，并做最大堆调整的递归运算

代码

function heapSort(arr) {
+  const len = arr.length
+
+  if (len <= 1) {
+    return arr
+  }
+
+  // 建立小顶堆
+  for (let i = Math.floor(len / 2 - 1); i >= 0; i--) {
+    minHeapify(arr, i, len)
+  }
+
+  // 排序
+  for (let j = 0; j < len; j++) {
+    // 把最小值放到最末
+    [arr[0], arr[len - 1 - j]] = [arr[len - 1 - j], arr[0]]
+    minHeapify(arr, 0, len - 2 - j)
+  }
+
+  return arr
+}
+
+function minHeapify(arr, index, length) {
+  const left = index * 2 + 1, right = index * 2 + 2
+  let minIndex = index
+
+  if (left <= length && arr[left] < arr[minIndex]) {
+    minIndex = left
+  }
+
+  if (right <= length && arr[right] < arr[minIndex]) {
+    minIndex = right
+  }
+
+  if (minIndex !== index) {
+    [arr[index], arr[minIndex]] = [arr[minIndex], arr[index]]
+    minHeapify(arr, minIndex, length)
+  }
+}
+
+heapSort([2, 1, 7, 9, 5, 8]) // [9, 8, 7, 5, 2, 1]

算法分析

时间复杂度：O(nlogn)

桶排序

这个博客用于记录我个人所读所思所想，前端开发相关。

\ No newline at end of file diff --git a/src/components/bio.js b/src/components/bio.js deleted file mode 100644 index e3199b5..0000000 --- a/src/components/bio.js +++ /dev/null @@ -1,75 +0,0 @@ -/** - * Bio component that queries for data - * with Gatsby's StaticQuery component - * - * See: https://www.gatsbyjs.org/docs/static-query/ - */ - -import React from "react" -import { StaticQuery, graphql } from "gatsby" -import Image from "gatsby-image" - -import { rhythm } from "../utils/typography" - -function Bio() { - return ( - { - const { author, social } = data.site.siteMetadata - return ( -

- Written by {author} who lives and works in San - Francisco building useful things. - {` `} - - You should follow him on Twitter - -

- ) - }} - /> - ) -} - -const bioQuery = graphql` - query BioQuery { - avatar: file(absolutePath: { regex: "/profile-pic.jpg/" }) { - childImageSharp { - fixed(width: 50, height: 50) { - ...GatsbyImageSharpFixed - } - } - } - site { - siteMetadata { - author - social { - twitter - } - } - } - } -` - -export default Bio diff --git a/src/components/layout.js b/src/components/layout.js deleted file mode 100644 index 5a44c9c..0000000 --- a/src/components/layout.js +++ /dev/null @@ -1,75 +0,0 @@ -import React from "react" -import { Link } from "gatsby" - -import { rhythm, scale } from "../utils/typography" - -class Layout extends React.Component { - render() { - const { location, title, children } = this.props - const rootPath = `${__PATH_PREFIX__}/` - let header - - if (location.pathname === rootPath) { - header = ( -

- - {title} - -

- ) - } else { - header = ( -

- - {title} - -

- ) - } - return ( -

{header}

{children}

- -

- ) - } -} - -export default Layout diff --git a/src/components/seo.js b/src/components/seo.js deleted file mode 100644 index 66ec994..0000000 --- a/src/components/seo.js +++ /dev/null @@ -1,99 +0,0 @@ -/** - * SEO component that queries for data with - * Gatsby's useStaticQuery React hook - * - * See: https://www.gatsbyjs.org/docs/use-static-query/ - */ - -import React from "react" -import PropTypes from "prop-types" -import Helmet from "react-helmet" -import { useStaticQuery, graphql } from "gatsby" - -function SEO({ description, lang, meta, keywords, title }) { - const { site } = useStaticQuery( - graphql` - query { - site { - siteMetadata { - title - description - author - } - } - } - ` - ) - - const metaDescription = description || site.siteMetadata.description - - return ( - 0 - ? { - name: `keywords`, - content: keywords.join(`, `), - } - : [] - ) - .concat(meta)} - /> - ) -} - -SEO.defaultProps = { - lang: `en`, - meta: [], - keywords: [], - description: ``, -} - -SEO.propTypes = { - description: PropTypes.string, - lang: PropTypes.string, - meta: PropTypes.arrayOf(PropTypes.object), - keywords: PropTypes.arrayOf(PropTypes.string), - title: PropTypes.string.isRequired, -} - -export default SEO diff --git a/src/pages/404.js b/src/pages/404.js deleted file mode 100644 index 008a76b..0000000 --- a/src/pages/404.js +++ /dev/null @@ -1,32 +0,0 @@ -import React from "react" -import { graphql } from "gatsby" - -import Layout from "../components/layout" -import SEO from "../components/seo" - -class NotFoundPage extends React.Component { - render() { - const { data } = this.props - const siteTitle = data.site.siteMetadata.title - - return ( - - -

Not Found

You just hit a route that doesn't exist... the sadness.

- - ) - } -} - -export default NotFoundPage - -export const pageQuery = graphql` - query { - site { - siteMetadata { - title - } - } - } -` diff --git a/src/pages/index.js b/src/pages/index.js deleted file mode 100644 index bd33594..0000000 --- a/src/pages/index.js +++ /dev/null @@ -1,74 +0,0 @@ -import React from "react" -import { Link, graphql } from "gatsby" - -import Bio from "../components/bio" -import Layout from "../components/layout" -import SEO from "../components/seo" -import { rhythm } from "../utils/typography" - -class BlogIndex extends React.Component { - render() { - const { data } = this.props - const siteTitle = data.site.siteMetadata.title - const posts = data.allMarkdownRemark.edges - - return ( - - - - {posts.map(({ node }) => { - const title = node.frontmatter.title || node.fields.slug - return ( -

- - {title} - -

- {node.frontmatter.date} -

- ) - })} - - ) - } -} - -export default BlogIndex - -export const pageQuery = graphql` - query { - site { - siteMetadata { - title - } - } - allMarkdownRemark(sort: { fields: [frontmatter___date], order: DESC }) { - edges { - node { - excerpt - fields { - slug - } - frontmatter { - date(formatString: "MMMM DD, YYYY") - title - description - } - } - } - } - } -` diff --git a/src/templates/blog-post.js b/src/templates/blog-post.js deleted file mode 100644 index 644054e..0000000 --- a/src/templates/blog-post.js +++ /dev/null @@ -1,90 +0,0 @@ -import React from "react" -import { Link, graphql } from "gatsby" - -import Bio from "../components/bio" -import Layout from "../components/layout" -import SEO from "../components/seo" -import { rhythm, scale } from "../utils/typography" - -class BlogPostTemplate extends React.Component { - render() { - const post = this.props.data.markdownRemark - const siteTitle = this.props.data.site.siteMetadata.title - const { previous, next } = this.props.pageContext - - return ( - - -

{post.frontmatter.title}

- {post.frontmatter.date} -

- - -

- {previous && ( - - ← {previous.frontmatter.title} - - )} -
- {next && ( - - {next.frontmatter.title} → - - )} -

- - ) - } -} - -export default BlogPostTemplate - -export const pageQuery = graphql` - query BlogPostBySlug($slug: String!) { - site { - siteMetadata { - title - author - } - } - markdownRemark(fields: { slug: { eq: $slug } }) { - id - excerpt(pruneLength: 160) - html - frontmatter { - title - date(formatString: "MMMM DD, YYYY") - description - } - } - } -` diff --git a/src/utils/typography.js b/src/utils/typography.js deleted file mode 100644 index 428720b..0000000 --- a/src/utils/typography.js +++ /dev/null @@ -1,23 +0,0 @@ -import Typography from "typography" -import Wordpress2016 from "typography-theme-wordpress-2016" - -Wordpress2016.overrideThemeStyles = () => { - return { - "a.gatsby-resp-image-link": { - boxShadow: `none`, - }, - } -} - -delete Wordpress2016.googleFonts - -const typography = new Typography(Wordpress2016) - -// Hot reload typography in development. -if (process.env.NODE_ENV !== `production`) { - typography.injectStyles() -} - -export default typography -export const rhythm = typography.rhythm -export const scale = typography.scale diff --git a/static/28d9034d7df3f4bc5bd1a6af7a04e5c8/12f09/grid_-fc98a513-1266-4780-a4bf-ec8ba04cf16c.png b/static/28d9034d7df3f4bc5bd1a6af7a04e5c8/12f09/grid_-fc98a513-1266-4780-a4bf-ec8ba04cf16c.png new file mode 100644 index 0000000..2cfeada Binary files /dev/null and b/static/28d9034d7df3f4bc5bd1a6af7a04e5c8/12f09/grid_-fc98a513-1266-4780-a4bf-ec8ba04cf16c.png differ diff --git a/static/28d9034d7df3f4bc5bd1a6af7a04e5c8/a0b80/grid_-fc98a513-1266-4780-a4bf-ec8ba04cf16c.png b/static/28d9034d7df3f4bc5bd1a6af7a04e5c8/a0b80/grid_-fc98a513-1266-4780-a4bf-ec8ba04cf16c.png new file mode 100644 index 0000000..4123eb0 Binary files /dev/null and b/static/28d9034d7df3f4bc5bd1a6af7a04e5c8/a0b80/grid_-fc98a513-1266-4780-a4bf-ec8ba04cf16c.png differ diff --git a/static/28d9034d7df3f4bc5bd1a6af7a04e5c8/e4a3f/grid_-fc98a513-1266-4780-a4bf-ec8ba04cf16c.png 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Please don't update this file + * directly; instead, make changes to your Workbox build configuration + * and re-run your build process. + * See https://goo.gl/2aRDsh + */ + +importScripts("workbox-v3.6.3/workbox-sw.js"); +workbox.setConfig({modulePathPrefix: "workbox-v3.6.3"}); + +workbox.core.setCacheNameDetails({prefix: "gatsby-plugin-offline"}); + +workbox.skipWaiting(); +workbox.clientsClaim(); + +/** + * The workboxSW.precacheAndRoute() method efficiently caches and responds to + * requests for URLs in the manifest. + * See https://goo.gl/S9QRab + */ +self.__precacheManifest = [ + { + "url": "webpack-runtime-3eea2950013faa99b5b1.js" + }, + { + "url": "styles.f4d3b82d4cae5b327690.css" + }, + { + "url": "styles-89fd2ae28bdf06750a71.js" + }, + { + "url": "framework-b5b229d58c3c710d5429.js" + }, + { + "url": "app-c10812a55a62a7ee38ef.js" + }, + { + "url": "component---node-modules-gatsby-plugin-offline-app-shell-js-f3d0a21fe8149f33caf4.js" + }, + { + "url": "offline-plugin-app-shell-fallback/index.html", + "revision": "8cc439739a399fec381a484bb538f4dd" + }, + { + "url": "polyfill-905013744daa67b74738.js" + }, + { + "url": "manifest.webmanifest", + "revision": "2fa8e9f91e0649935eb9b7d61b617d3a" + } +].concat(self.__precacheManifest || []); +workbox.precaching.suppressWarnings(); +workbox.precaching.precacheAndRoute(self.__precacheManifest, {}); + +workbox.routing.registerRoute(/(\.js$|\.css$|static\/)/, workbox.strategies.cacheFirst(), 'GET'); +workbox.routing.registerRoute(/^https?:.*\page-data\/.*\/page-data\.json/, workbox.strategies.networkFirst(), 'GET'); +workbox.routing.registerRoute(/^https?:.*\.(png|jpg|jpeg|webp|svg|gif|tiff|js|woff|woff2|json|css)$/, workbox.strategies.staleWhileRevalidate(), 'GET'); +workbox.routing.registerRoute(/^https?:\/\/fonts\.googleapis\.com\/css/, workbox.strategies.staleWhileRevalidate(), 'GET'); + +/* global importScripts, workbox, idbKeyval */ + +importScripts(`idb-keyval-iife.min.js`) + +const { NavigationRoute } = workbox.routing + +const navigationRoute = new NavigationRoute(async ({ event }) => { + let { pathname } = new URL(event.request.url) + pathname = pathname.replace(new RegExp(`^`), ``) + + // Check for resources + the app bundle + // The latter may not exist if the SW is updating to a new version + const resources = await idbKeyval.get(`resources:${pathname}`) + if (!resources || !(await caches.match(`/app-c10812a55a62a7ee38ef.js`))) { + return await fetch(event.request) + } + + for (const resource of resources) { + // As soon as we detect a failed resource, fetch the entire page from + // network - that way we won't risk being in an inconsistent state with + // some parts of the page failing. + if (!(await caches.match(resource))) { + return await fetch(event.request) + } + } + + const offlineShell = `/offline-plugin-app-shell-fallback/index.html` + return await caches.match(offlineShell) +}) + +workbox.routing.registerRoute(navigationRoute) + +const messageApi = { + setPathResources(event, { path, resources }) { + event.waitUntil(idbKeyval.set(`resources:${path}`, resources)) + }, + + clearPathResources(event) { + event.waitUntil(idbKeyval.clear()) + }, +} + +self.addEventListener(`message`, event => { + const { gatsbyApi } = event.data + if (gatsbyApi) messageApi[gatsbyApi](event, event.data) +}) diff --git a/webpack-runtime-3eea2950013faa99b5b1.js b/webpack-runtime-3eea2950013faa99b5b1.js new file mode 100644 index 0000000..b5add4f --- /dev/null +++ b/webpack-runtime-3eea2950013faa99b5b1.js @@ -0,0 +1,2 @@ +!function(e){function t(t){for(var r,o,f=t[0],d=t[1],s=t[2],u=0,i=[];u} + * + * @private + */ + static fromRequest(request) { + return babelHelpers.asyncToGenerator(function* () { + const requestInit = { headers: {} }; + + // Set the body if present. + if (request.method !== 'GET') { + // Use blob to support non-text request bodies, + // and clone first in case the caller still needs the request. + requestInit.body = yield request.clone().blob(); + } + + // Convert the headers from an iterable to an object. + for (const [key, value] of request.headers.entries()) { + requestInit.headers[key] = value; + } + + // Add all other serializable request properties + for (const prop of serializableProperties) { + if (request[prop] !== undefined) { + requestInit[prop] = request[prop]; + } + } + + return new StorableRequest({ url: request.url, requestInit }); + })(); + } + + /** + * Accepts a URL and RequestInit dictionary that can be used to create a + * new Request object. A timestamp is also generated so consumers can + * reference when the object was created. + * + * @param {Object} param1 + * @param {string} param1.url + * @param {Object} param1.requestInit + * See: https://fetch.spec.whatwg.org/#requestinit + * @param {number} param1.timestamp The time the request was created, + * defaulting to the current time if not specified. + * + * @private + */ + constructor({ url, requestInit, timestamp = Date.now() }) { + this.url = url; + this.requestInit = requestInit; + + // "Private" + this._timestamp = timestamp; + } + + /** + * Gets the private _timestamp property. + * + * @return {number} + * + * @private + */ + get timestamp() { + return this._timestamp; + } + + /** + * Coverts this instance to a plain Object. + * + * @return {Object} + * + * @private + */ + toObject() { + return { + url: this.url, + timestamp: this.timestamp, + requestInit: this.requestInit + }; + } + + /** + * Converts this instance to a Request. + * + * @return {Request} + * + * @private + */ + toRequest() { + return new Request(this.url, this.requestInit); + } + + /** + * Creates and returns a deep clone of the instance. + * + * @return {StorableRequest} + * + * @private + */ + clone() { + const requestInit = Object.assign({}, this.requestInit); + requestInit.headers = Object.assign({}, this.requestInit.headers); + if (this.requestInit.body) { + requestInit.body = this.requestInit.body.slice(); + } + + return new StorableRequest({ + url: this.url, + timestamp: this.timestamp, + requestInit + }); + } + } + + /* + Copyright 2017 Google Inc. All Rights Reserved. + Licensed under the Apache License, Version 2.0 (the "License"); + you may not use this file except in compliance with the License. + You may obtain a copy of the License at + + http://www.apache.org/licenses/LICENSE-2.0 + + Unless required by applicable law or agreed to in writing, software + distributed under the License is distributed on an "AS IS" BASIS, + WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + See the License for the specific language governing permissions and + limitations under the License. + */ + + const DB_NAME = 'workbox-background-sync'; + const OBJECT_STORE_NAME = 'requests'; + const INDEXED_PROP = 'queueName'; + const TAG_PREFIX = 'workbox-background-sync'; + const MAX_RETENTION_TIME = 60 * 24 * 7; // 7 days in minutes + + /* + Copyright 2017 Google Inc. All Rights Reserved. + Licensed under the Apache License, Version 2.0 (the "License"); + you may not use this file except in compliance with the License. + You may obtain a copy of the License at + + http://www.apache.org/licenses/LICENSE-2.0 + + Unless required by applicable law or agreed to in writing, software + distributed under the License is distributed on an "AS IS" BASIS, + WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + See the License for the specific language governing permissions and + limitations under the License. + */ + + /** + * A class to manage storing requests from a Queue in IndexedbDB, + * indexed by their queue name for easier access. + * + * @private + */ + class QueueStore { + /** + * Associates this instance with a Queue instance, so entries added can be + * identified by their queue name. + * + * @param {Queue} queue + * + * @private + */ + constructor(queue) { + this._queue = queue; + this._db = new DBWrapper_mjs.DBWrapper(DB_NAME, 1, { + onupgradeneeded: evt => evt.target.result.createObjectStore(OBJECT_STORE_NAME, { autoIncrement: true }).createIndex(INDEXED_PROP, INDEXED_PROP, { unique: false }) + }); + } + + /** + * Takes a StorableRequest instance, converts it to an object and adds it + * as an entry in the object store. + * + * @param {StorableRequest} storableRequest + * + * @private + */ + addEntry(storableRequest) { + var _this = this; + + return babelHelpers.asyncToGenerator(function* () { + yield _this._db.add(OBJECT_STORE_NAME, { + queueName: _this._queue.name, + storableRequest: storableRequest.toObject() + }); + })(); + } + + /** + * Gets the oldest entry in the object store, removes it, and returns the + * value as a StorableRequest instance. If no entry exists, it returns + * undefined. + * + * @return {StorableRequest|undefined} + * + * @private + */ + getAndRemoveOldestEntry() { + var _this2 = this; + + return babelHelpers.asyncToGenerator(function* () { + const [entry] = yield _this2._db.getAllMatching(OBJECT_STORE_NAME, { + index: INDEXED_PROP, + query: IDBKeyRange.only(_this2._queue.name), + count: 1, + includeKeys: true + }); + + if (entry) { + yield _this2._db.delete(OBJECT_STORE_NAME, entry.primaryKey); + return new StorableRequest(entry.value.storableRequest); + } + })(); + } + } + + /* + Copyright 2017 Google Inc. All Rights Reserved. + Licensed under the Apache License, Version 2.0 (the "License"); + you may not use this file except in compliance with the License. + You may obtain a copy of the License at + + http://www.apache.org/licenses/LICENSE-2.0 + + Unless required by applicable law or agreed to in writing, software + distributed under the License is distributed on an "AS IS" BASIS, + WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + See the License for the specific language governing permissions and + limitations under the License. + */ + + const queueNames = new Set(); + + /** + * A class to manage storing failed requests in IndexedDB and retrying them + * later. All parts of the storing and replaying process are observable via + * callbacks. + * + * @memberof workbox.backgroundSync + */ + class Queue { + /** + * Creates an instance of Queue with the given options + * + * @param {string} name The unique name for this queue. This name must be + * unique as it's used to register sync events and store requests + * in IndexedDB specific to this instance. An error will be thrown if + * a duplicate name is detected. + * @param {Object} [options] + * @param {Object} [options.callbacks] Callbacks to observe the lifecycle of + * queued requests. Use these to respond to or modify the requests + * during the replay process. + * @param {function(StorableRequest):undefined} + * [options.callbacks.requestWillEnqueue] + * Invoked immediately before the request is stored to IndexedDB. Use + * this callback to modify request data at store time. + * @param {function(StorableRequest):undefined} + * [options.callbacks.requestWillReplay] + * Invoked immediately before the request is re-fetched. Use this + * callback to modify request data at fetch time. + * @param {function(Array):undefined} + * [options.callbacks.queueDidReplay] + * Invoked after all requests in the queue have successfully replayed. + * @param {number} [options.maxRetentionTime = 7 days] The amount of time (in + * minutes) a request may be retried. After this amount of time has + * passed, the request will be deleted from the queue. + */ + constructor(name, { + callbacks = {}, + maxRetentionTime = MAX_RETENTION_TIME + } = {}) { + // Ensure the store name is not already being used + if (queueNames.has(name)) { + throw new WorkboxError_mjs.WorkboxError('duplicate-queue-name', { name }); + } else { + queueNames.add(name); + } + + this._name = name; + this._callbacks = callbacks; + this._maxRetentionTime = maxRetentionTime; + this._queueStore = new QueueStore(this); + + this._addSyncListener(); + } + + /** + * @return {string} + */ + get name() { + return this._name; + } + + /** + * Stores the passed request into IndexedDB. The database used is + * `workbox-background-sync` and the object store name is the same as + * the name this instance was created with (to guarantee it's unique). + * + * @param {Request} request The request object to store. + */ + addRequest(request) { + var _this = this; + + return babelHelpers.asyncToGenerator(function* () { + { + assert_mjs.assert.isInstance(request, Request, { + moduleName: 'workbox-background-sync', + className: 'Queue', + funcName: 'addRequest', + paramName: 'request' + }); + } + + const storableRequest = yield StorableRequest.fromRequest(request.clone()); + yield _this._runCallback('requestWillEnqueue', storableRequest); + yield _this._queueStore.addEntry(storableRequest); + yield _this._registerSync(); + { + logger_mjs.logger.log(`Request for '${getFriendlyURL_mjs.getFriendlyURL(storableRequest.url)}' has been + added to background sync queue '${_this._name}'.`); + } + })(); + } + + /** + * Retrieves all stored requests in IndexedDB and retries them. If the + * queue contained requests that were successfully replayed, the + * `queueDidReplay` callback is invoked (which implies the queue is + * now empty). If any of the requests fail, a new sync registration is + * created to retry again later. + */ + replayRequests() { + var _this2 = this; + + return babelHelpers.asyncToGenerator(function* () { + const now = Date.now(); + const replayedRequests = []; + const failedRequests = []; + + let storableRequest; + while (storableRequest = yield _this2._queueStore.getAndRemoveOldestEntry()) { + // Make a copy so the unmodified request can be stored + // in the event of a replay failure. + const storableRequestClone = storableRequest.clone(); + + // Ignore requests older than maxRetentionTime. + const maxRetentionTimeInMs = _this2._maxRetentionTime * 60 * 1000; + if (now - storableRequest.timestamp > maxRetentionTimeInMs) { + continue; + } + + yield _this2._runCallback('requestWillReplay', storableRequest); + + const replay = { request: storableRequest.toRequest() }; + + try { + // Clone the request before fetching so callbacks get an unused one. + replay.response = yield fetch(replay.request.clone()); + { + logger_mjs.logger.log(`Request for '${getFriendlyURL_mjs.getFriendlyURL(storableRequest.url)}' + has been replayed`); + } + } catch (err) { + { + logger_mjs.logger.log(`Request for '${getFriendlyURL_mjs.getFriendlyURL(storableRequest.url)}' + failed to replay`); + } + replay.error = err; + failedRequests.push(storableRequestClone); + } + + replayedRequests.push(replay); + } + + yield _this2._runCallback('queueDidReplay', replayedRequests); + + // If any requests failed, put the failed requests back in the queue + // and rethrow the failed requests count. + if (failedRequests.length) { + yield Promise.all(failedRequests.map(function (storableRequest) { + return _this2._queueStore.addEntry(storableRequest); + })); + + throw new WorkboxError_mjs.WorkboxError('queue-replay-failed', { name: _this2._name, count: failedRequests.length }); + } + })(); + } + + /** + * Runs the passed callback if it exists. + * + * @private + * @param {string} name The name of the callback on this._callbacks. + * @param {...*} args The arguments to invoke the callback with. + */ + _runCallback(name, ...args) { + var _this3 = this; + + return babelHelpers.asyncToGenerator(function* () { + if (typeof _this3._callbacks[name] === 'function') { + yield _this3._callbacks[name].apply(null, args); + } + })(); + } + + /** + * In sync-supporting browsers, this adds a listener for the sync event. + * In non-sync-supporting browsers, this will retry the queue on service + * worker startup. + * + * @private + */ + _addSyncListener() { + if ('sync' in registration) { + self.addEventListener('sync', event => { + if (event.tag === `${TAG_PREFIX}:${this._name}`) { + { + logger_mjs.logger.log(`Background sync for tag '${event.tag}' + has been received, starting replay now`); + } + event.waitUntil(this.replayRequests()); + } + }); + } else { + { + logger_mjs.logger.log(`Background sync replaying without background sync event`); + } + // If the browser doesn't support background sync, retry + // every time the service worker starts up as a fallback. + this.replayRequests(); + } + } + + /** + * Registers a sync event with a tag unique to this instance. + * + * @private + */ + _registerSync() { + var _this4 = this; + + return babelHelpers.asyncToGenerator(function* () { + if ('sync' in registration) { + try { + yield registration.sync.register(`${TAG_PREFIX}:${_this4._name}`); + } catch (err) { + // This means the registration failed for some reason, possibly due to + // the user disabling it. + { + logger_mjs.logger.warn(`Unable to register sync event for '${_this4._name}'.`, err); + } + } + } + })(); + } + + /** + * Returns the set of queue names. This is primarily used to reset the list + * of queue names in tests. + * + * @return {Set} + * + * @private + */ + static get _queueNames() { + return queueNames; + } + } + + /* + Copyright 2017 Google Inc. All Rights Reserved. + Licensed under the Apache License, Version 2.0 (the "License"); + you may not use this file except in compliance with the License. + You may obtain a copy of the License at + + http://www.apache.org/licenses/LICENSE-2.0 + + Unless required by applicable law or agreed to in writing, software + distributed under the License is distributed on an "AS IS" BASIS, + WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + See the License for the specific language governing permissions and + limitations under the License. + */ + + /** + * A class implementing the `fetchDidFail` lifecycle callback. This makes it + * easier to add failed requests to a background sync Queue. + * + * @memberof workbox.backgroundSync + */ + class Plugin { + /** + * @param {...*} queueArgs Args to forward to the composed Queue instance. + * See the [Queue]{@link workbox.backgroundSync.Queue} documentation for + * parameter details. + */ + constructor(...queueArgs) { + this._queue = new Queue(...queueArgs); + this.fetchDidFail = this.fetchDidFail.bind(this); + } + + /** + * @param {Object} options + * @param {Request} options.request + * @private + */ + fetchDidFail({ request }) { + var _this = this; + + return babelHelpers.asyncToGenerator(function* () { + yield _this._queue.addRequest(request); + })(); + } + } + + /* + Copyright 2017 Google Inc. All Rights Reserved. + Licensed under the Apache License, Version 2.0 (the "License"); + you may not use this file except in compliance with the License. + You may obtain a copy of the License at + + http://www.apache.org/licenses/LICENSE-2.0 + + Unless required by applicable law or agreed to in writing, software + distributed under the License is distributed on an "AS IS" BASIS, + WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + See the License for the specific language governing permissions and + limitations under the License. + */ + + var publicAPI = /*#__PURE__*/Object.freeze({ + Queue: Queue, + Plugin: Plugin + }); + + /* + Copyright 2017 Google Inc. All Rights Reserved. + Licensed under the Apache License, Version 2.0 (the "License"); + you may not use this file except in compliance with the License. + You may obtain a copy of the License at + + http://www.apache.org/licenses/LICENSE-2.0 + + Unless required by applicable law or agreed to in writing, software + distributed under the License is distributed on an "AS IS" BASIS, + WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + See the License for the specific language governing permissions and + limitations under the License. + */ + + return publicAPI; + +}(workbox.core._private,workbox.core._private,workbox.core._private,workbox.core._private,workbox.core._private)); + +//# sourceMappingURL=workbox-background-sync.dev.js.map diff --git a/workbox-v3.6.3/workbox-background-sync.dev.js.map b/workbox-v3.6.3/workbox-background-sync.dev.js.map new file mode 100644 index 0000000..ef88572 --- /dev/null +++ b/workbox-v3.6.3/workbox-background-sync.dev.js.map @@ -0,0 +1 @@ +{"version":3,"names":[],"mappings":"","sources":["packages/workbox-background-sync/browser.mjs"],"sourcesContent":["this.workbox = this.workbox || {};\nthis.workbox.backgroundSync = (function (DBWrapper_mjs,WorkboxError_mjs,logger_mjs,assert_mjs,getFriendlyURL_mjs) {\n 'use strict';\n\n try {\n self.workbox.v['workbox:background-sync:3.6.3'] = 1;\n } catch (e) {} // eslint-disable-line\n\n /*\n Copyright 2017 Google Inc. All Rights Reserved.\n Licensed under the Apache License, Version 2.0 (the \"License\");\n you may not use this file except in compliance with the License.\n You may obtain a copy of the License at\n\n http://www.apache.org/licenses/LICENSE-2.0\n\n Unless required by applicable law or agreed to in writing, software\n distributed under the License is distributed on an \"AS IS\" BASIS,\n WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\n See the License for the specific language governing permissions and\n limitations under the License.\n */\n\n const serializableProperties = ['method', 'referrer', 'referrerPolicy', 'mode', 'credentials', 'cache', 'redirect', 'integrity', 'keepalive'];\n\n /**\n * A class to make it easier to serialize and de-serialize requests so they\n * can be stored in IndexedDB.\n *\n * @private\n */\n class StorableRequest {\n /**\n * Converts a Request object to a plain object that can be structured\n * cloned or JSON-stringified.\n *\n * @param {Request} request\n * @return {Promise}\n *\n * @private\n */\n static fromRequest(request) {\n return babelHelpers.asyncToGenerator(function* () {\n const requestInit = { headers: {} };\n\n // Set the body if present.\n if (request.method !== 'GET') {\n // Use blob to support non-text request bodies,\n // and clone first in case the caller still needs the request.\n requestInit.body = yield request.clone().blob();\n }\n\n // Convert the headers from an iterable to an object.\n for (const [key, value] of request.headers.entries()) {\n requestInit.headers[key] = value;\n }\n\n // Add all other serializable request properties\n for (const prop of serializableProperties) {\n if (request[prop] !== undefined) {\n requestInit[prop] = request[prop];\n }\n }\n\n return new StorableRequest({ url: request.url, requestInit });\n })();\n }\n\n /**\n * Accepts a URL and RequestInit dictionary that can be used to create a\n * new Request object. A timestamp is also generated so consumers can\n * reference when the object was created.\n *\n * @param {Object} param1\n * @param {string} param1.url\n * @param {Object} param1.requestInit\n * See: https://fetch.spec.whatwg.org/#requestinit\n * @param {number} param1.timestamp The time the request was created,\n * defaulting to the current time if not specified.\n *\n * @private\n */\n constructor({ url, requestInit, timestamp = Date.now() }) {\n this.url = url;\n this.requestInit = requestInit;\n\n // \"Private\"\n this._timestamp = timestamp;\n }\n\n /**\n * Gets the private _timestamp property.\n *\n * @return {number}\n *\n * @private\n */\n get timestamp() {\n return this._timestamp;\n }\n\n /**\n * Coverts this instance to a plain Object.\n *\n * @return {Object}\n *\n * @private\n */\n toObject() {\n return {\n url: this.url,\n timestamp: this.timestamp,\n requestInit: this.requestInit\n };\n }\n\n /**\n * Converts this instance to a Request.\n *\n * @return {Request}\n *\n * @private\n */\n toRequest() {\n return new Request(this.url, this.requestInit);\n }\n\n /**\n * Creates and returns a deep clone of the instance.\n *\n * @return {StorableRequest}\n *\n * @private\n */\n clone() {\n const requestInit = Object.assign({}, this.requestInit);\n requestInit.headers = Object.assign({}, this.requestInit.headers);\n if (this.requestInit.body) {\n requestInit.body = this.requestInit.body.slice();\n }\n\n return new StorableRequest({\n url: this.url,\n timestamp: this.timestamp,\n requestInit\n });\n }\n }\n\n /*\n Copyright 2017 Google Inc. All Rights Reserved.\n Licensed under the Apache License, Version 2.0 (the \"License\");\n you may not use this file except in compliance with the License.\n You may obtain a copy of the License at\n\n http://www.apache.org/licenses/LICENSE-2.0\n\n Unless required by applicable law or agreed to in writing, software\n distributed under the License is distributed on an \"AS IS\" BASIS,\n WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\n See the License for the specific language governing permissions and\n limitations under the License.\n */\n\n const DB_NAME = 'workbox-background-sync';\n const OBJECT_STORE_NAME = 'requests';\n const INDEXED_PROP = 'queueName';\n const TAG_PREFIX = 'workbox-background-sync';\n const MAX_RETENTION_TIME = 60 * 24 * 7; // 7 days in minutes\n\n /*\n Copyright 2017 Google Inc. All Rights Reserved.\n Licensed under the Apache License, Version 2.0 (the \"License\");\n you may not use this file except in compliance with the License.\n You may obtain a copy of the License at\n\n http://www.apache.org/licenses/LICENSE-2.0\n\n Unless required by applicable law or agreed to in writing, software\n distributed under the License is distributed on an \"AS IS\" BASIS,\n WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\n See the License for the specific language governing permissions and\n limitations under the License.\n */\n\n /**\n * A class to manage storing requests from a Queue in IndexedbDB,\n * indexed by their queue name for easier access.\n *\n * @private\n */\n class QueueStore {\n /**\n * Associates this instance with a Queue instance, so entries added can be\n * identified by their queue name.\n *\n * @param {Queue} queue\n *\n * @private\n */\n constructor(queue) {\n this._queue = queue;\n this._db = new DBWrapper_mjs.DBWrapper(DB_NAME, 1, {\n onupgradeneeded: evt => evt.target.result.createObjectStore(OBJECT_STORE_NAME, { autoIncrement: true }).createIndex(INDEXED_PROP, INDEXED_PROP, { unique: false })\n });\n }\n\n /**\n * Takes a StorableRequest instance, converts it to an object and adds it\n * as an entry in the object store.\n *\n * @param {StorableRequest} storableRequest\n *\n * @private\n */\n addEntry(storableRequest) {\n var _this = this;\n\n return babelHelpers.asyncToGenerator(function* () {\n yield _this._db.add(OBJECT_STORE_NAME, {\n queueName: _this._queue.name,\n storableRequest: storableRequest.toObject()\n });\n })();\n }\n\n /**\n * Gets the oldest entry in the object store, removes it, and returns the\n * value as a StorableRequest instance. If no entry exists, it returns\n * undefined.\n *\n * @return {StorableRequest|undefined}\n *\n * @private\n */\n getAndRemoveOldestEntry() {\n var _this2 = this;\n\n return babelHelpers.asyncToGenerator(function* () {\n const [entry] = yield _this2._db.getAllMatching(OBJECT_STORE_NAME, {\n index: INDEXED_PROP,\n query: IDBKeyRange.only(_this2._queue.name),\n count: 1,\n includeKeys: true\n });\n\n if (entry) {\n yield _this2._db.delete(OBJECT_STORE_NAME, entry.primaryKey);\n return new StorableRequest(entry.value.storableRequest);\n }\n })();\n }\n }\n\n /*\n Copyright 2017 Google Inc. All Rights Reserved.\n Licensed under the Apache License, Version 2.0 (the \"License\");\n you may not use this file except in compliance with the License.\n You may obtain a copy of the License at\n\n http://www.apache.org/licenses/LICENSE-2.0\n\n Unless required by applicable law or agreed to in writing, software\n distributed under the License is distributed on an \"AS IS\" BASIS,\n WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\n See the License for the specific language governing permissions and\n limitations under the License.\n */\n\n const queueNames = new Set();\n\n /**\n * A class to manage storing failed requests in IndexedDB and retrying them\n * later. All parts of the storing and replaying process are observable via\n * callbacks.\n *\n * @memberof workbox.backgroundSync\n */\n class Queue {\n /**\n * Creates an instance of Queue with the given options\n *\n * @param {string} name The unique name for this queue. This name must be\n * unique as it's used to register sync events and store requests\n * in IndexedDB specific to this instance. An error will be thrown if\n * a duplicate name is detected.\n * @param {Object} [options]\n * @param {Object} [options.callbacks] Callbacks to observe the lifecycle of\n * queued requests. Use these to respond to or modify the requests\n * during the replay process.\n * @param {function(StorableRequest):undefined}\n * [options.callbacks.requestWillEnqueue]\n * Invoked immediately before the request is stored to IndexedDB. Use\n * this callback to modify request data at store time.\n * @param {function(StorableRequest):undefined}\n * [options.callbacks.requestWillReplay]\n * Invoked immediately before the request is re-fetched. Use this\n * callback to modify request data at fetch time.\n * @param {function(Array):undefined}\n * [options.callbacks.queueDidReplay]\n * Invoked after all requests in the queue have successfully replayed.\n * @param {number} [options.maxRetentionTime = 7 days] The amount of time (in\n * minutes) a request may be retried. After this amount of time has\n * passed, the request will be deleted from the queue.\n */\n constructor(name, {\n callbacks = {},\n maxRetentionTime = MAX_RETENTION_TIME\n } = {}) {\n // Ensure the store name is not already being used\n if (queueNames.has(name)) {\n throw new WorkboxError_mjs.WorkboxError('duplicate-queue-name', { name });\n } else {\n queueNames.add(name);\n }\n\n this._name = name;\n this._callbacks = callbacks;\n this._maxRetentionTime = maxRetentionTime;\n this._queueStore = new QueueStore(this);\n\n this._addSyncListener();\n }\n\n /**\n * @return {string}\n */\n get name() {\n return this._name;\n }\n\n /**\n * Stores the passed request into IndexedDB. The database used is\n * `workbox-background-sync` and the object store name is the same as\n * the name this instance was created with (to guarantee it's unique).\n *\n * @param {Request} request The request object to store.\n */\n addRequest(request) {\n var _this = this;\n\n return babelHelpers.asyncToGenerator(function* () {\n {\n assert_mjs.assert.isInstance(request, Request, {\n moduleName: 'workbox-background-sync',\n className: 'Queue',\n funcName: 'addRequest',\n paramName: 'request'\n });\n }\n\n const storableRequest = yield StorableRequest.fromRequest(request.clone());\n yield _this._runCallback('requestWillEnqueue', storableRequest);\n yield _this._queueStore.addEntry(storableRequest);\n yield _this._registerSync();\n {\n logger_mjs.logger.log(`Request for '${getFriendlyURL_mjs.getFriendlyURL(storableRequest.url)}' has been\n added to background sync queue '${_this._name}'.`);\n }\n })();\n }\n\n /**\n * Retrieves all stored requests in IndexedDB and retries them. If the\n * queue contained requests that were successfully replayed, the\n * `queueDidReplay` callback is invoked (which implies the queue is\n * now empty). If any of the requests fail, a new sync registration is\n * created to retry again later.\n */\n replayRequests() {\n var _this2 = this;\n\n return babelHelpers.asyncToGenerator(function* () {\n const now = Date.now();\n const replayedRequests = [];\n const failedRequests = [];\n\n let storableRequest;\n while (storableRequest = yield _this2._queueStore.getAndRemoveOldestEntry()) {\n // Make a copy so the unmodified request can be stored\n // in the event of a replay failure.\n const storableRequestClone = storableRequest.clone();\n\n // Ignore requests older than maxRetentionTime.\n const maxRetentionTimeInMs = _this2._maxRetentionTime * 60 * 1000;\n if (now - storableRequest.timestamp > maxRetentionTimeInMs) {\n continue;\n }\n\n yield _this2._runCallback('requestWillReplay', storableRequest);\n\n const replay = { request: storableRequest.toRequest() };\n\n try {\n // Clone the request before fetching so callbacks get an unused one.\n replay.response = yield fetch(replay.request.clone());\n {\n logger_mjs.logger.log(`Request for '${getFriendlyURL_mjs.getFriendlyURL(storableRequest.url)}'\n has been replayed`);\n }\n } catch (err) {\n {\n logger_mjs.logger.log(`Request for '${getFriendlyURL_mjs.getFriendlyURL(storableRequest.url)}'\n failed to replay`);\n }\n replay.error = err;\n failedRequests.push(storableRequestClone);\n }\n\n replayedRequests.push(replay);\n }\n\n yield _this2._runCallback('queueDidReplay', replayedRequests);\n\n // If any requests failed, put the failed requests back in the queue\n // and rethrow the failed requests count.\n if (failedRequests.length) {\n yield Promise.all(failedRequests.map(function (storableRequest) {\n return _this2._queueStore.addEntry(storableRequest);\n }));\n\n throw new WorkboxError_mjs.WorkboxError('queue-replay-failed', { name: _this2._name, count: failedRequests.length });\n }\n })();\n }\n\n /**\n * Runs the passed callback if it exists.\n *\n * @private\n * @param {string} name The name of the callback on this._callbacks.\n * @param {...*} args The arguments to invoke the callback with.\n */\n _runCallback(name, ...args) {\n var _this3 = this;\n\n return babelHelpers.asyncToGenerator(function* () {\n if (typeof _this3._callbacks[name] === 'function') {\n yield _this3._callbacks[name].apply(null, args);\n }\n })();\n }\n\n /**\n * In sync-supporting browsers, this adds a listener for the sync event.\n * In non-sync-supporting browsers, this will retry the queue on service\n * worker startup.\n *\n * @private\n */\n _addSyncListener() {\n if ('sync' in registration) {\n self.addEventListener('sync', event => {\n if (event.tag === `${TAG_PREFIX}:${this._name}`) {\n {\n logger_mjs.logger.log(`Background sync for tag '${event.tag}'\n has been received, starting replay now`);\n }\n event.waitUntil(this.replayRequests());\n }\n });\n } else {\n {\n logger_mjs.logger.log(`Background sync replaying without background sync event`);\n }\n // If the browser doesn't support background sync, retry\n // every time the service worker starts up as a fallback.\n this.replayRequests();\n }\n }\n\n /**\n * Registers a sync event with a tag unique to this instance.\n *\n * @private\n */\n _registerSync() {\n var _this4 = this;\n\n return babelHelpers.asyncToGenerator(function* () {\n if ('sync' in registration) {\n try {\n yield registration.sync.register(`${TAG_PREFIX}:${_this4._name}`);\n } catch (err) {\n // This means the registration failed for some reason, possibly due to\n // the user disabling it.\n {\n logger_mjs.logger.warn(`Unable to register sync event for '${_this4._name}'.`, err);\n }\n }\n }\n })();\n }\n\n /**\n * Returns the set of queue names. This is primarily used to reset the list\n * of queue names in tests.\n *\n * @return {Set}\n *\n * @private\n */\n static get _queueNames() {\n return queueNames;\n }\n }\n\n /*\n Copyright 2017 Google Inc. All Rights Reserved.\n Licensed under the Apache License, Version 2.0 (the \"License\");\n you may not use this file except in compliance with the License.\n You may obtain a copy of the License at\n\n http://www.apache.org/licenses/LICENSE-2.0\n\n Unless required by applicable law or agreed to in writing, software\n distributed under the License is distributed on an \"AS IS\" BASIS,\n WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\n See the License for the specific language governing permissions and\n limitations under the License.\n */\n\n /**\n * A class implementing the `fetchDidFail` lifecycle callback. This makes it\n * easier to add failed requests to a background sync Queue.\n *\n * @memberof workbox.backgroundSync\n */\n class Plugin {\n /**\n * @param {...*} queueArgs Args to forward to the composed Queue instance.\n * See the [Queue]{@link workbox.backgroundSync.Queue} documentation for\n * parameter details.\n */\n constructor(...queueArgs) {\n this._queue = new Queue(...queueArgs);\n this.fetchDidFail = this.fetchDidFail.bind(this);\n }\n\n /**\n * @param {Object} options\n * @param {Request} options.request\n * @private\n */\n fetchDidFail({ request }) {\n var _this = this;\n\n return babelHelpers.asyncToGenerator(function* () {\n yield _this._queue.addRequest(request);\n })();\n }\n }\n\n /*\n Copyright 2017 Google Inc. All Rights Reserved.\n Licensed under the Apache License, Version 2.0 (the \"License\");\n you may not use this file except in compliance with the License.\n You may obtain a copy of the License at\n\n http://www.apache.org/licenses/LICENSE-2.0\n\n Unless required by applicable law or agreed to in writing, software\n distributed under the License is distributed on an \"AS IS\" BASIS,\n WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\n See the License for the specific language governing permissions and\n limitations under the License.\n */\n\n var publicAPI = /*#__PURE__*/Object.freeze({\n Queue: Queue,\n Plugin: Plugin\n });\n\n /*\n Copyright 2017 Google Inc. All Rights Reserved.\n Licensed under the Apache License, Version 2.0 (the \"License\");\n you may not use this file except in compliance with the License.\n You may obtain a copy of the License at\n\n http://www.apache.org/licenses/LICENSE-2.0\n\n Unless required by applicable law or agreed to in writing, software\n distributed under the License is distributed on an \"AS IS\" BASIS,\n WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\n See the License for the specific language governing permissions and\n limitations under the License.\n */\n\n return publicAPI;\n\n}(workbox.core._private,workbox.core._private,workbox.core._private,workbox.core._private,workbox.core._private));\n"],"file":"workbox-background-sync.dev.js"} \ No newline at end of file diff --git a/workbox-v3.6.3/workbox-background-sync.prod.js b/workbox-v3.6.3/workbox-background-sync.prod.js new file mode 100644 index 0000000..6278012 --- /dev/null +++ b/workbox-v3.6.3/workbox-background-sync.prod.js @@ -0,0 +1,3 @@ +this.workbox=this.workbox||{},this.workbox.backgroundSync=function(e,t){"use strict";try{self.workbox.v["workbox:background-sync:3.6.3"]=1}catch(e){}const r=["method","referrer","referrerPolicy","mode","credentials","cache","redirect","integrity","keepalive"];class s{static fromRequest(e){return babelHelpers.asyncToGenerator(function*(){const t={headers:{}};"GET"!==e.method&&(t.body=yield e.clone().blob());for(const[r,s]of e.headers.entries())t.headers[r]=s;for(const s of r)void 0!==e[s]&&(t[s]=e[s]);return new s({url:e.url,requestInit:t})})()}constructor({url:e,requestInit:t,timestamp:r=Date.now()}){this.url=e,this.requestInit=t,this.e=r}get timestamp(){return this.e}toObject(){return{url:this.url,timestamp:this.timestamp,requestInit:this.requestInit}}toRequest(){return new Request(this.url,this.requestInit)}clone(){const e=Object.assign({},this.requestInit);return e.headers=Object.assign({},this.requestInit.headers),this.requestInit.body&&(e.body=this.requestInit.body.slice()),new s({url:this.url,timestamp:this.timestamp,requestInit:e})}}const i="workbox-background-sync",n="requests",u="queueName",c="workbox-background-sync",o=10080;class l{constructor(t){this.t=t,this.r=new e.DBWrapper(i,1,{onupgradeneeded:e=>e.target.result.createObjectStore(n,{autoIncrement:!0}).createIndex(u,u,{unique:!1})})}addEntry(e){var t=this;return babelHelpers.asyncToGenerator(function*(){yield t.r.add(n,{queueName:t.t.name,storableRequest:e.toObject()})})()}getAndRemoveOldestEntry(){var e=this;return babelHelpers.asyncToGenerator(function*(){const[t]=yield e.r.getAllMatching(n,{index:u,query:IDBKeyRange.only(e.t.name),count:1,includeKeys:!0});if(t)return yield e.r.delete(n,t.primaryKey),new s(t.value.storableRequest)})()}}const a=new Set;class h{constructor(e,{callbacks:r={},maxRetentionTime:s=o}={}){if(a.has(e))throw new t.WorkboxError("duplicate-queue-name",{name:e});a.add(e),this.s=e,this.i=r,this.n=s,this.u=new l(this),this.c()}get name(){return this.s}addRequest(e){var t=this;return babelHelpers.asyncToGenerator(function*(){const r=yield s.fromRequest(e.clone());yield t.o("requestWillEnqueue",r),yield t.u.addEntry(r),yield t.l()})()}replayRequests(){var e=this;return babelHelpers.asyncToGenerator(function*(){const r=Date.now(),s=[],i=[];let n;for(;n=yield e.u.getAndRemoveOldestEntry();){const t=n.clone(),u=60*e.n*1e3;if(r-n.timestamp>u)continue;yield e.o("requestWillReplay",n);const c={request:n.toRequest()};try{c.response=yield fetch(c.request.clone())}catch(e){c.error=e,i.push(t)}s.push(c)}if(yield e.o("queueDidReplay",s),i.length)throw yield Promise.all(i.map(function(t){return e.u.addEntry(t)})),new t.WorkboxError("queue-replay-failed",{name:e.s,count:i.length})})()}o(e,...t){var r=this;return babelHelpers.asyncToGenerator(function*(){"function"==typeof r.i[e]&&(yield r.i[e].apply(null,t))})()}c(){"sync"in registration?self.addEventListener("sync",e=>{e.tag===`${c}:${this.s}`&&e.waitUntil(this.replayRequests())}):this.replayRequests()}l(){var e=this;return babelHelpers.asyncToGenerator(function*(){if("sync"in registration)try{yield registration.sync.register(`${c}:${e.s}`)}catch(e){}})()}static get a(){return a}}return Object.freeze({Queue:h,Plugin:class{constructor(...e){this.t=new h(...e),this.fetchDidFail=this.fetchDidFail.bind(this)}fetchDidFail({request:e}){var t=this;return babelHelpers.asyncToGenerator(function*(){yield t.t.addRequest(e)})()}}})}(workbox.core._private,workbox.core._private); + +//# sourceMappingURL=workbox-background-sync.prod.js.map diff --git a/workbox-v3.6.3/workbox-background-sync.prod.js.map b/workbox-v3.6.3/workbox-background-sync.prod.js.map new file mode 100644 index 0000000..6e08bb9 --- /dev/null +++ b/workbox-v3.6.3/workbox-background-sync.prod.js.map @@ -0,0 +1 @@ +{"version":3,"names":[],"mappings":"","sources":["packages/workbox-background-sync/browser.mjs"],"sourcesContent":["this.workbox=this.workbox||{},this.workbox.backgroundSync=function(e,t){\"use strict\";try{self.workbox.v[\"workbox:background-sync:3.6.3\"]=1}catch(e){}const r=[\"method\",\"referrer\",\"referrerPolicy\",\"mode\",\"credentials\",\"cache\",\"redirect\",\"integrity\",\"keepalive\"];class s{static fromRequest(e){return babelHelpers.asyncToGenerator(function*(){const t={headers:{}};\"GET\"!==e.method&&(t.body=yield e.clone().blob());for(const[r,s]of e.headers.entries())t.headers[r]=s;for(const s of r)void 0!==e[s]&&(t[s]=e[s]);return new s({url:e.url,requestInit:t})})()}constructor({url:e,requestInit:t,timestamp:r=Date.now()}){this.url=e,this.requestInit=t,this.e=r}get timestamp(){return this.e}toObject(){return{url:this.url,timestamp:this.timestamp,requestInit:this.requestInit}}toRequest(){return new Request(this.url,this.requestInit)}clone(){const e=Object.assign({},this.requestInit);return e.headers=Object.assign({},this.requestInit.headers),this.requestInit.body&&(e.body=this.requestInit.body.slice()),new s({url:this.url,timestamp:this.timestamp,requestInit:e})}}const i=\"workbox-background-sync\",n=\"requests\",u=\"queueName\",c=\"workbox-background-sync\",o=10080;class l{constructor(t){this.t=t,this.r=new e.DBWrapper(i,1,{onupgradeneeded:e=>e.target.result.createObjectStore(n,{autoIncrement:!0}).createIndex(u,u,{unique:!1})})}addEntry(e){var t=this;return babelHelpers.asyncToGenerator(function*(){yield t.r.add(n,{queueName:t.t.name,storableRequest:e.toObject()})})()}getAndRemoveOldestEntry(){var e=this;return babelHelpers.asyncToGenerator(function*(){const[t]=yield e.r.getAllMatching(n,{index:u,query:IDBKeyRange.only(e.t.name),count:1,includeKeys:!0});if(t)return yield e.r.delete(n,t.primaryKey),new s(t.value.storableRequest)})()}}const a=new Set;class h{constructor(e,{callbacks:r={},maxRetentionTime:s=o}={}){if(a.has(e))throw new t.WorkboxError(\"duplicate-queue-name\",{name:e});a.add(e),this.s=e,this.i=r,this.n=s,this.u=new l(this),this.c()}get name(){return this.s}addRequest(e){var t=this;return babelHelpers.asyncToGenerator(function*(){const r=yield s.fromRequest(e.clone());yield t.o(\"requestWillEnqueue\",r),yield t.u.addEntry(r),yield t.l()})()}replayRequests(){var e=this;return babelHelpers.asyncToGenerator(function*(){const r=Date.now(),s=[],i=[];let n;for(;n=yield e.u.getAndRemoveOldestEntry();){const t=n.clone(),u=60*e.n*1e3;if(r-n.timestamp>u)continue;yield e.o(\"requestWillReplay\",n);const c={request:n.toRequest()};try{c.response=yield fetch(c.request.clone())}catch(e){c.error=e,i.push(t)}s.push(c)}if(yield e.o(\"queueDidReplay\",s),i.length)throw yield Promise.all(i.map(function(t){return e.u.addEntry(t)})),new t.WorkboxError(\"queue-replay-failed\",{name:e.s,count:i.length})})()}o(e,...t){var r=this;return babelHelpers.asyncToGenerator(function*(){\"function\"==typeof r.i[e]&&(yield r.i[e].apply(null,t))})()}c(){\"sync\"in registration?self.addEventListener(\"sync\",e=>{e.tag===`${c}:${this.s}`&&e.waitUntil(this.replayRequests())}):this.replayRequests()}l(){var e=this;return babelHelpers.asyncToGenerator(function*(){if(\"sync\"in registration)try{yield registration.sync.register(`${c}:${e.s}`)}catch(e){}})()}static get a(){return a}}return Object.freeze({Queue:h,Plugin:class{constructor(...e){this.t=new h(...e),this.fetchDidFail=this.fetchDidFail.bind(this)}fetchDidFail({request:e}){var t=this;return babelHelpers.asyncToGenerator(function*(){yield t.t.addRequest(e)})()}}})}(workbox.core._private,workbox.core._private);\n"],"file":"workbox-background-sync.prod.js"} \ No newline at end of file diff --git a/workbox-v3.6.3/workbox-broadcast-cache-update.dev.js b/workbox-v3.6.3/workbox-broadcast-cache-update.dev.js new file mode 100644 index 0000000..3e779c1 --- /dev/null +++ b/workbox-v3.6.3/workbox-broadcast-cache-update.dev.js @@ -0,0 +1,395 @@ +this.workbox = this.workbox || {}; +this.workbox.broadcastUpdate = (function (exports,WorkboxError_mjs,logger_mjs,assert_mjs) { + 'use strict'; + + try { + self.workbox.v['workbox:broadcast-cache-update:3.6.3'] = 1; + } catch (e) {} // eslint-disable-line + + /* + Copyright 2016 Google Inc. All Rights Reserved. + Licensed under the Apache License, Version 2.0 (the "License"); + you may not use this file except in compliance with the License. + You may obtain a copy of the License at + + http://www.apache.org/licenses/LICENSE-2.0 + + Unless required by applicable law or agreed to in writing, software + distributed under the License is distributed on an "AS IS" BASIS, + WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + See the License for the specific language governing permissions and + limitations under the License. + */ + + /** + * Given two `Response's`, compares several header values to see if they are + * the same or not. + * + * @param {Response} firstResponse + * @param {Response} secondResponse + * @param {Array} headersToCheck + * @return {boolean} + * + * @memberof workbox.broadcastUpdate + * @private + */ + const responsesAreSame = (firstResponse, secondResponse, headersToCheck) => { + { + if (!(firstResponse instanceof Response && secondResponse instanceof Response)) { + throw new WorkboxError_mjs.WorkboxError('invalid-responses-are-same-args'); + } + } + + const atLeastOneHeaderAvailable = headersToCheck.some(header => { + return firstResponse.headers.has(header) && secondResponse.headers.has(header); + }); + + if (!atLeastOneHeaderAvailable) { + { + logger_mjs.logger.warn(`Unable to determine where the response has been updated ` + `because none of the headers that would be checked are present.`); + logger_mjs.logger.debug(`Attempting to compare the following: `, firstResponse, secondResponse, headersToCheck); + } + + // Just return true, indicating the that responses are the same, since we + // can't determine otherwise. + return true; + } + + return headersToCheck.every(header => { + const headerStateComparison = firstResponse.headers.has(header) === secondResponse.headers.has(header); + const headerValueComparison = firstResponse.headers.get(header) === secondResponse.headers.get(header); + + return headerStateComparison && headerValueComparison; + }); + }; + + /* + Copyright 2016 Google Inc. All Rights Reserved. + Licensed under the Apache License, Version 2.0 (the "License"); + you may not use this file except in compliance with the License. + You may obtain a copy of the License at + + http://www.apache.org/licenses/LICENSE-2.0 + + Unless required by applicable law or agreed to in writing, software + distributed under the License is distributed on an "AS IS" BASIS, + WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + See the License for the specific language governing permissions and + limitations under the License. + */ + + var messageTypes = { + CACHE_UPDATED: 'CACHE_UPDATED' + }; + + /* + Copyright 2016 Google Inc. All Rights Reserved. + Licensed under the Apache License, Version 2.0 (the "License"); + you may not use this file except in compliance with the License. + You may obtain a copy of the License at + + http://www.apache.org/licenses/LICENSE-2.0 + + Unless required by applicable law or agreed to in writing, software + distributed under the License is distributed on an "AS IS" BASIS, + WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + See the License for the specific language governing permissions and + limitations under the License. + */ + + /** + * You would not normally call this method directly; it's called automatically + * by an instance of the {@link BroadcastCacheUpdate} class. It's exposed here + * for the benefit of developers who would rather not use the full + * `BroadcastCacheUpdate` implementation. + * + * Calling this will dispatch a message on the provided + * {@link https://developers.google.com/web/updates/2016/09/broadcastchannel|Broadcast Channel} + * to notify interested subscribers about a change to a cached resource. + * + * The message that's posted has a formation inspired by the + * [Flux standard action](https://github.com/acdlite/flux-standard-action#introduction) + * format like so: + * + * ``` + * { + * type: 'CACHE_UPDATED', + * meta: 'workbox-broadcast-cache-update', + * payload: { + * cacheName: 'the-cache-name', + * updatedUrl: 'https://example.com/' + * } + * } + * ``` + * + * (Usage of [Flux](https://facebook.github.io/flux/) itself is not at + * all required.) + * + * @param {BroadcastChannel} channel The `BroadcastChannel` to use. + * @param {string} cacheName The name of the cache in which the updated + * `Response` was stored. + * @param {string} url The URL associated with the updated `Response`. + * @param {string} source A string identifying this library as the source + * of the update message. + * + * @memberof workbox.broadcastUpdate + */ + const broadcastUpdate = (channel, cacheName, url, source) => { + // There are browsers which support service workers but don't support the + // Broadcast Channel API. + // See https://github.com/GoogleChrome/workbox/issues/1304 + if (!('BroadcastChannel' in self && channel)) { + { + logger_mjs.logger.debug(`${url} was updated, but the Broadcast Channel API is not ` + `available in the current browser.`); + } + return; + } + + { + assert_mjs.assert.isInstance(channel, BroadcastChannel, { + moduleName: 'workbox-broadcast-cache-update', + className: '~', + funcName: 'broadcastUpdate', + paramName: 'channel' + }); + assert_mjs.assert.isType(cacheName, 'string', { + moduleName: 'workbox-broadcast-cache-update', + className: '~', + funcName: 'broadcastUpdate', + paramName: 'cacheName' + }); + assert_mjs.assert.isType(url, 'string', { + moduleName: 'workbox-broadcast-cache-update', + className: '~', + funcName: 'broadcastUpdate', + paramName: 'url' + }); + assert_mjs.assert.isType(source, 'string', { + moduleName: 'workbox-broadcast-cache-update', + className: '~', + funcName: 'broadcastUpdate', + paramName: 'source' + }); + } + + channel.postMessage({ + type: messageTypes.CACHE_UPDATED, + meta: source, + payload: { + cacheName: cacheName, + updatedUrl: url + } + }); + }; + + /* + Copyright 2016 Google Inc. All Rights Reserved. + Licensed under the Apache License, Version 2.0 (the "License"); + you may not use this file except in compliance with the License. + You may obtain a copy of the License at + + http://www.apache.org/licenses/LICENSE-2.0 + + Unless required by applicable law or agreed to in writing, software + distributed under the License is distributed on an "AS IS" BASIS, + WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + See the License for the specific language governing permissions and + limitations under the License. + */ + + /** + * Uses the [Broadcast Channel API]{@link https://developers.google.com/web/updates/2016/09/broadcastchannel} + * to notify interested parties when a cached response has been updated. + * + * For efficiency's sake, the underlying response bodies are not compared; + * only specific response headers are checked. + * + * @memberof workbox.broadcastUpdate + */ + class BroadcastCacheUpdate { + /** + * Construct a BroadcastCacheUpdate instance with a specific `channelName` to + * broadcast messages on + * + * @param {string} channelName The name that will be used when creating + * the `BroadcastChannel`. + * @param {Object} options + * @param {Array} + * [options.headersToCheck=['content-length', 'etag', 'last-modified']] A + * list of headers that will be used to determine whether the responses + * differ. + * @param {string} [options.source='workbox-broadcast-cache-update'] An + * attribution value that indicates where the update originated. + */ + constructor(channelName, { headersToCheck, source } = {}) { + { + if (typeof channelName !== 'string' || channelName.length === 0) { + throw new WorkboxError_mjs.WorkboxError('channel-name-required'); + } + } + + this._channelName = channelName; + this._headersToCheck = headersToCheck || ['content-length', 'etag', 'last-modified']; + this._source = source || 'workbox-broadcast-cache-update'; + + // TODO assert typeof headersToCheck instanceof Array + } + + /** + * @return {BroadcastChannel|undefined} The BroadcastChannel instance used for + * broadcasting updates, or undefined if the browser doesn't support the + * Broadcast Channel API. + * + * @private + */ + _getChannel() { + if ('BroadcastChannel' in self && !this._channel) { + this._channel = new BroadcastChannel(this._channelName); + } + return this._channel; + } + + /** + * Compare two [Responses](https://developer.mozilla.org/en-US/docs/Web/API/Response) + * and send a message via the + * {@link https://developers.google.com/web/updates/2016/09/broadcastchannel|Broadcast Channel API} + * if they differ. + * + * Neither of the Responses can be {@link http://stackoverflow.com/questions/39109789|opaque}. + * + * @param {Response} firstResponse First responses to compare. + * @param {Response} secondResponse Second responses to compare. + * @param {string} url The URL of the updated request. + * @param {string} cacheName Name of the cache the responses belong to. + * This is included in the message posted on the broadcast channel. + */ + notifyIfUpdated(firstResponse, secondResponse, url, cacheName) { + if (!responsesAreSame(firstResponse, secondResponse, this._headersToCheck)) { + broadcastUpdate(this._getChannel(), cacheName, url, this._source); + } + } + } + + /* + Copyright 2016 Google Inc. All Rights Reserved. + Licensed under the Apache License, Version 2.0 (the "License"); + you may not use this file except in compliance with the License. + You may obtain a copy of the License at + + http://www.apache.org/licenses/LICENSE-2.0 + + Unless required by applicable law or agreed to in writing, software + distributed under the License is distributed on an "AS IS" BASIS, + WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + See the License for the specific language governing permissions and + limitations under the License. + */ + + /** + * This plugin will automatically broadcast a message whenever a cached response + * is updated. + * + * @memberof workbox.broadcastUpdate + */ + class Plugin { + /** + * Construct a new instance with a specific `channelName` to + * broadcast messages on + * + * @param {string} channelName The name that will be used when creating + * the `BroadcastChannel`. + * @param {Object} options + * @param {Array} + * [options.headersToCheck=['content-length', 'etag', 'last-modified']] A + * list of headers that will be used to determine whether the responses + * differ. + * @param {string} [options.source='workbox-broadcast-cache-update'] An + * attribution value that indicates where the update originated. + */ + constructor(channelName, options) { + this._broadcastUpdate = new BroadcastCacheUpdate(channelName, options); + } + /** + * A "lifecycle" callback that will be triggered automatically by the + * `workbox-sw` and `workbox-runtime-caching` handlers when an entry is + * added to a cache. + * + * @private + * @param {Object} options The input object to this function. + * @param {string} options.cacheName Name of the cache being updated. + * @param {Response} [options.oldResponse] The previous cached value, if any. + * @param {Response} options.newResponse The new value in the cache. + */ + cacheDidUpdate({ cacheName, oldResponse, newResponse, request }) { + { + assert_mjs.assert.isType(cacheName, 'string', { + moduleName: 'workbox-broadcast-cache-update', + className: 'Plugin', + funcName: 'cacheDidUpdate', + paramName: 'cacheName' + }); + assert_mjs.assert.isInstance(newResponse, Response, { + moduleName: 'workbox-broadcast-cache-update', + className: 'Plugin', + funcName: 'cacheDidUpdate', + paramName: 'newResponse' + }); + assert_mjs.assert.isInstance(request, Request, { + moduleName: 'workbox-broadcast-cache-update', + className: 'Plugin', + funcName: 'cacheDidUpdate', + paramName: 'request' + }); + } + + if (!oldResponse) { + // Without a two responses there is nothing to compare. + return; + } + + this._broadcastUpdate.notifyIfUpdated(oldResponse, newResponse, request.url, cacheName); + } + } + + /* + Copyright 2017 Google Inc. + + Licensed under the Apache License, Version 2.0 (the "License"); + you may not use this file except in compliance with the License. + You may obtain a copy of the License at + + https://www.apache.org/licenses/LICENSE-2.0 + + Unless required by applicable law or agreed to in writing, software + distributed under the License is distributed on an "AS IS" BASIS, + WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + See the License for the specific language governing permissions and + limitations under the License. + */ + + /* + Copyright 2017 Google Inc. + + Licensed under the Apache License, Version 2.0 (the "License"); + you may not use this file except in compliance with the License. + You may obtain a copy of the License at + + https://www.apache.org/licenses/LICENSE-2.0 + + Unless required by applicable law or agreed to in writing, software + distributed under the License is distributed on an "AS IS" BASIS, + WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + See the License for the specific language governing permissions and + limitations under the License. + */ + + exports.BroadcastCacheUpdate = BroadcastCacheUpdate; + exports.Plugin = Plugin; + exports.broadcastUpdate = broadcastUpdate; + exports.messageTypes = messageTypes; + + return exports; + +}({},workbox.core._private,workbox.core._private,workbox.core._private)); + +//# sourceMappingURL=workbox-broadcast-cache-update.dev.js.map diff --git a/workbox-v3.6.3/workbox-broadcast-cache-update.dev.js.map b/workbox-v3.6.3/workbox-broadcast-cache-update.dev.js.map new file mode 100644 index 0000000..aa0dd03 --- /dev/null +++ b/workbox-v3.6.3/workbox-broadcast-cache-update.dev.js.map @@ -0,0 +1 @@ +{"version":3,"names":[],"mappings":"","sources":["packages/workbox-broadcast-cache-update/browser.mjs"],"sourcesContent":["this.workbox = this.workbox || {};\nthis.workbox.broadcastUpdate = (function (exports,WorkboxError_mjs,logger_mjs,assert_mjs) {\n 'use strict';\n\n try {\n self.workbox.v['workbox:broadcast-cache-update:3.6.3'] = 1;\n } catch (e) {} // eslint-disable-line\n\n /*\n Copyright 2016 Google Inc. All Rights Reserved.\n Licensed under the Apache License, Version 2.0 (the \"License\");\n you may not use this file except in compliance with the License.\n You may obtain a copy of the License at\n\n http://www.apache.org/licenses/LICENSE-2.0\n\n Unless required by applicable law or agreed to in writing, software\n distributed under the License is distributed on an \"AS IS\" BASIS,\n WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\n See the License for the specific language governing permissions and\n limitations under the License.\n */\n\n /**\n * Given two `Response's`, compares several header values to see if they are\n * the same or not.\n *\n * @param {Response} firstResponse\n * @param {Response} secondResponse\n * @param {Array} headersToCheck\n * @return {boolean}\n *\n * @memberof workbox.broadcastUpdate\n * @private\n */\n const responsesAreSame = (firstResponse, secondResponse, headersToCheck) => {\n {\n if (!(firstResponse instanceof Response && secondResponse instanceof Response)) {\n throw new WorkboxError_mjs.WorkboxError('invalid-responses-are-same-args');\n }\n }\n\n const atLeastOneHeaderAvailable = headersToCheck.some(header => {\n return firstResponse.headers.has(header) && secondResponse.headers.has(header);\n });\n\n if (!atLeastOneHeaderAvailable) {\n {\n logger_mjs.logger.warn(`Unable to determine where the response has been updated ` + `because none of the headers that would be checked are present.`);\n logger_mjs.logger.debug(`Attempting to compare the following: `, firstResponse, secondResponse, headersToCheck);\n }\n\n // Just return true, indicating the that responses are the same, since we\n // can't determine otherwise.\n return true;\n }\n\n return headersToCheck.every(header => {\n const headerStateComparison = firstResponse.headers.has(header) === secondResponse.headers.has(header);\n const headerValueComparison = firstResponse.headers.get(header) === secondResponse.headers.get(header);\n\n return headerStateComparison && headerValueComparison;\n });\n };\n\n /*\n Copyright 2016 Google Inc. All Rights Reserved.\n Licensed under the Apache License, Version 2.0 (the \"License\");\n you may not use this file except in compliance with the License.\n You may obtain a copy of the License at\n\n http://www.apache.org/licenses/LICENSE-2.0\n\n Unless required by applicable law or agreed to in writing, software\n distributed under the License is distributed on an \"AS IS\" BASIS,\n WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\n See the License for the specific language governing permissions and\n limitations under the License.\n */\n\n var messageTypes = {\n CACHE_UPDATED: 'CACHE_UPDATED'\n };\n\n /*\n Copyright 2016 Google Inc. All Rights Reserved.\n Licensed under the Apache License, Version 2.0 (the \"License\");\n you may not use this file except in compliance with the License.\n You may obtain a copy of the License at\n\n http://www.apache.org/licenses/LICENSE-2.0\n\n Unless required by applicable law or agreed to in writing, software\n distributed under the License is distributed on an \"AS IS\" BASIS,\n WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\n See the License for the specific language governing permissions and\n limitations under the License.\n */\n\n /**\n * You would not normally call this method directly; it's called automatically\n * by an instance of the {@link BroadcastCacheUpdate} class. It's exposed here\n * for the benefit of developers who would rather not use the full\n * `BroadcastCacheUpdate` implementation.\n *\n * Calling this will dispatch a message on the provided\n * {@link https://developers.google.com/web/updates/2016/09/broadcastchannel|Broadcast Channel}\n * to notify interested subscribers about a change to a cached resource.\n *\n * The message that's posted has a formation inspired by the\n * [Flux standard action](https://github.com/acdlite/flux-standard-action#introduction)\n * format like so:\n *\n * ```\n * {\n * type: 'CACHE_UPDATED',\n * meta: 'workbox-broadcast-cache-update',\n * payload: {\n * cacheName: 'the-cache-name',\n * updatedUrl: 'https://example.com/'\n * }\n * }\n * ```\n *\n * (Usage of [Flux](https://facebook.github.io/flux/) itself is not at\n * all required.)\n *\n * @param {BroadcastChannel} channel The `BroadcastChannel` to use.\n * @param {string} cacheName The name of the cache in which the updated\n * `Response` was stored.\n * @param {string} url The URL associated with the updated `Response`.\n * @param {string} source A string identifying this library as the source\n * of the update message.\n *\n * @memberof workbox.broadcastUpdate\n */\n const broadcastUpdate = (channel, cacheName, url, source) => {\n // There are browsers which support service workers but don't support the\n // Broadcast Channel API.\n // See https://github.com/GoogleChrome/workbox/issues/1304\n if (!('BroadcastChannel' in self && channel)) {\n {\n logger_mjs.logger.debug(`${url} was updated, but the Broadcast Channel API is not ` + `available in the current browser.`);\n }\n return;\n }\n\n {\n assert_mjs.assert.isInstance(channel, BroadcastChannel, {\n moduleName: 'workbox-broadcast-cache-update',\n className: '~',\n funcName: 'broadcastUpdate',\n paramName: 'channel'\n });\n assert_mjs.assert.isType(cacheName, 'string', {\n moduleName: 'workbox-broadcast-cache-update',\n className: '~',\n funcName: 'broadcastUpdate',\n paramName: 'cacheName'\n });\n assert_mjs.assert.isType(url, 'string', {\n moduleName: 'workbox-broadcast-cache-update',\n className: '~',\n funcName: 'broadcastUpdate',\n paramName: 'url'\n });\n assert_mjs.assert.isType(source, 'string', {\n moduleName: 'workbox-broadcast-cache-update',\n className: '~',\n funcName: 'broadcastUpdate',\n paramName: 'source'\n });\n }\n\n channel.postMessage({\n type: messageTypes.CACHE_UPDATED,\n meta: source,\n payload: {\n cacheName: cacheName,\n updatedUrl: url\n }\n });\n };\n\n /*\n Copyright 2016 Google Inc. All Rights Reserved.\n Licensed under the Apache License, Version 2.0 (the \"License\");\n you may not use this file except in compliance with the License.\n You may obtain a copy of the License at\n\n http://www.apache.org/licenses/LICENSE-2.0\n\n Unless required by applicable law or agreed to in writing, software\n distributed under the License is distributed on an \"AS IS\" BASIS,\n WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\n See the License for the specific language governing permissions and\n limitations under the License.\n */\n\n /**\n * Uses the [Broadcast Channel API]{@link https://developers.google.com/web/updates/2016/09/broadcastchannel}\n * to notify interested parties when a cached response has been updated.\n *\n * For efficiency's sake, the underlying response bodies are not compared;\n * only specific response headers are checked.\n *\n * @memberof workbox.broadcastUpdate\n */\n class BroadcastCacheUpdate {\n /**\n * Construct a BroadcastCacheUpdate instance with a specific `channelName` to\n * broadcast messages on\n *\n * @param {string} channelName The name that will be used when creating\n * the `BroadcastChannel`.\n * @param {Object} options\n * @param {Array}\n * [options.headersToCheck=['content-length', 'etag', 'last-modified']] A\n * list of headers that will be used to determine whether the responses\n * differ.\n * @param {string} [options.source='workbox-broadcast-cache-update'] An\n * attribution value that indicates where the update originated.\n */\n constructor(channelName, { headersToCheck, source } = {}) {\n {\n if (typeof channelName !== 'string' || channelName.length === 0) {\n throw new WorkboxError_mjs.WorkboxError('channel-name-required');\n }\n }\n\n this._channelName = channelName;\n this._headersToCheck = headersToCheck || ['content-length', 'etag', 'last-modified'];\n this._source = source || 'workbox-broadcast-cache-update';\n\n // TODO assert typeof headersToCheck instanceof Array\n }\n\n /**\n * @return {BroadcastChannel|undefined} The BroadcastChannel instance used for\n * broadcasting updates, or undefined if the browser doesn't support the\n * Broadcast Channel API.\n *\n * @private\n */\n _getChannel() {\n if ('BroadcastChannel' in self && !this._channel) {\n this._channel = new BroadcastChannel(this._channelName);\n }\n return this._channel;\n }\n\n /**\n * Compare two [Responses](https://developer.mozilla.org/en-US/docs/Web/API/Response)\n * and send a message via the\n * {@link https://developers.google.com/web/updates/2016/09/broadcastchannel|Broadcast Channel API}\n * if they differ.\n *\n * Neither of the Responses can be {@link http://stackoverflow.com/questions/39109789|opaque}.\n *\n * @param {Response} firstResponse First responses to compare.\n * @param {Response} secondResponse Second responses to compare.\n * @param {string} url The URL of the updated request.\n * @param {string} cacheName Name of the cache the responses belong to.\n * This is included in the message posted on the broadcast channel.\n */\n notifyIfUpdated(firstResponse, secondResponse, url, cacheName) {\n if (!responsesAreSame(firstResponse, secondResponse, this._headersToCheck)) {\n broadcastUpdate(this._getChannel(), cacheName, url, this._source);\n }\n }\n }\n\n /*\n Copyright 2016 Google Inc. All Rights Reserved.\n Licensed under the Apache License, Version 2.0 (the \"License\");\n you may not use this file except in compliance with the License.\n You may obtain a copy of the License at\n\n http://www.apache.org/licenses/LICENSE-2.0\n\n Unless required by applicable law or agreed to in writing, software\n distributed under the License is distributed on an \"AS IS\" BASIS,\n WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\n See the License for the specific language governing permissions and\n limitations under the License.\n */\n\n /**\n * This plugin will automatically broadcast a message whenever a cached response\n * is updated.\n *\n * @memberof workbox.broadcastUpdate\n */\n class Plugin {\n /**\n * Construct a new instance with a specific `channelName` to\n * broadcast messages on\n *\n * @param {string} channelName The name that will be used when creating\n * the `BroadcastChannel`.\n * @param {Object} options\n * @param {Array}\n * [options.headersToCheck=['content-length', 'etag', 'last-modified']] A\n * list of headers that will be used to determine whether the responses\n * differ.\n * @param {string} [options.source='workbox-broadcast-cache-update'] An\n * attribution value that indicates where the update originated.\n */\n constructor(channelName, options) {\n this._broadcastUpdate = new BroadcastCacheUpdate(channelName, options);\n }\n /**\n * A \"lifecycle\" callback that will be triggered automatically by the\n * `workbox-sw` and `workbox-runtime-caching` handlers when an entry is\n * added to a cache.\n *\n * @private\n * @param {Object} options The input object to this function.\n * @param {string} options.cacheName Name of the cache being updated.\n * @param {Response} [options.oldResponse] The previous cached value, if any.\n * @param {Response} options.newResponse The new value in the cache.\n */\n cacheDidUpdate({ cacheName, oldResponse, newResponse, request }) {\n {\n assert_mjs.assert.isType(cacheName, 'string', {\n moduleName: 'workbox-broadcast-cache-update',\n className: 'Plugin',\n funcName: 'cacheDidUpdate',\n paramName: 'cacheName'\n });\n assert_mjs.assert.isInstance(newResponse, Response, {\n moduleName: 'workbox-broadcast-cache-update',\n className: 'Plugin',\n funcName: 'cacheDidUpdate',\n paramName: 'newResponse'\n });\n assert_mjs.assert.isInstance(request, Request, {\n moduleName: 'workbox-broadcast-cache-update',\n className: 'Plugin',\n funcName: 'cacheDidUpdate',\n paramName: 'request'\n });\n }\n\n if (!oldResponse) {\n // Without a two responses there is nothing to compare.\n return;\n }\n\n this._broadcastUpdate.notifyIfUpdated(oldResponse, newResponse, request.url, cacheName);\n }\n }\n\n /*\n Copyright 2017 Google Inc.\n\n Licensed under the Apache License, Version 2.0 (the \"License\");\n you may not use this file except in compliance with the License.\n You may obtain a copy of the License at\n\n https://www.apache.org/licenses/LICENSE-2.0\n\n Unless required by applicable law or agreed to in writing, software\n distributed under the License is distributed on an \"AS IS\" BASIS,\n WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\n See the License for the specific language governing permissions and\n limitations under the License.\n */\n\n /*\n Copyright 2017 Google Inc.\n\n Licensed under the Apache License, Version 2.0 (the \"License\");\n you may not use this file except in compliance with the License.\n You may obtain a copy of the License at\n\n https://www.apache.org/licenses/LICENSE-2.0\n\n Unless required by applicable law or agreed to in writing, software\n distributed under the License is distributed on an \"AS IS\" BASIS,\n WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\n See the License for the specific language governing permissions and\n limitations under the License.\n */\n\n exports.BroadcastCacheUpdate = BroadcastCacheUpdate;\n exports.Plugin = Plugin;\n exports.broadcastUpdate = broadcastUpdate;\n exports.messageTypes = messageTypes;\n\n return exports;\n\n}({},workbox.core._private,workbox.core._private,workbox.core._private));\n"],"file":"workbox-broadcast-cache-update.dev.js"} \ No newline at end of file diff --git a/workbox-v3.6.3/workbox-broadcast-cache-update.prod.js b/workbox-v3.6.3/workbox-broadcast-cache-update.prod.js new file mode 100644 index 0000000..d1b1997 --- /dev/null +++ b/workbox-v3.6.3/workbox-broadcast-cache-update.prod.js @@ -0,0 +1,3 @@ +this.workbox=this.workbox||{},this.workbox.broadcastUpdate=function(t){"use strict";try{self.workbox.v["workbox:broadcast-cache-update:3.6.3"]=1}catch(t){}const e=(t,e,s)=>{return!s.some(s=>t.headers.has(s)&&e.headers.has(s))||s.every(s=>{const a=t.headers.has(s)===e.headers.has(s),n=t.headers.get(s)===e.headers.get(s);return a&&n})};var s={CACHE_UPDATED:"CACHE_UPDATED"};const a=(t,e,a,n)=>{"BroadcastChannel"in self&&t&&t.postMessage({type:s.CACHE_UPDATED,meta:n,payload:{cacheName:e,updatedUrl:a}})};class n{constructor(t,{headersToCheck:e,source:s}={}){this.t=t,this.e=e||["content-length","etag","last-modified"],this.s=s||"workbox-broadcast-cache-update"}a(){return"BroadcastChannel"in self&&!this.n&&(this.n=new BroadcastChannel(this.t)),this.n}notifyIfUpdated(t,s,n,c){e(t,s,this.e)||a(this.a(),c,n,this.s)}}return t.BroadcastCacheUpdate=n,t.Plugin=class{constructor(t,e){this.c=new n(t,e)}cacheDidUpdate({cacheName:t,oldResponse:e,newResponse:s,request:a}){e&&this.c.notifyIfUpdated(e,s,a.url,t)}},t.broadcastUpdate=a,t.messageTypes=s,t}({}); + +//# sourceMappingURL=workbox-broadcast-cache-update.prod.js.map diff --git a/workbox-v3.6.3/workbox-broadcast-cache-update.prod.js.map b/workbox-v3.6.3/workbox-broadcast-cache-update.prod.js.map new file mode 100644 index 0000000..2c5bd98 --- /dev/null +++ b/workbox-v3.6.3/workbox-broadcast-cache-update.prod.js.map @@ -0,0 +1 @@ +{"version":3,"names":[],"mappings":"","sources":["packages/workbox-broadcast-cache-update/browser.mjs"],"sourcesContent":["this.workbox=this.workbox||{},this.workbox.broadcastUpdate=function(t){\"use strict\";try{self.workbox.v[\"workbox:broadcast-cache-update:3.6.3\"]=1}catch(t){}const e=(t,e,s)=>{return!s.some(s=>t.headers.has(s)&&e.headers.has(s))||s.every(s=>{const a=t.headers.has(s)===e.headers.has(s),n=t.headers.get(s)===e.headers.get(s);return a&&n})};var s={CACHE_UPDATED:\"CACHE_UPDATED\"};const a=(t,e,a,n)=>{\"BroadcastChannel\"in self&&t&&t.postMessage({type:s.CACHE_UPDATED,meta:n,payload:{cacheName:e,updatedUrl:a}})};class n{constructor(t,{headersToCheck:e,source:s}={}){this.t=t,this.e=e||[\"content-length\",\"etag\",\"last-modified\"],this.s=s||\"workbox-broadcast-cache-update\"}a(){return\"BroadcastChannel\"in self&&!this.n&&(this.n=new BroadcastChannel(this.t)),this.n}notifyIfUpdated(t,s,n,c){e(t,s,this.e)||a(this.a(),c,n,this.s)}}return t.BroadcastCacheUpdate=n,t.Plugin=class{constructor(t,e){this.c=new n(t,e)}cacheDidUpdate({cacheName:t,oldResponse:e,newResponse:s,request:a}){e&&this.c.notifyIfUpdated(e,s,a.url,t)}},t.broadcastUpdate=a,t.messageTypes=s,t}({});\n"],"file":"workbox-broadcast-cache-update.prod.js"} \ No newline at end of file diff --git a/workbox-v3.6.3/workbox-cache-expiration.dev.js b/workbox-v3.6.3/workbox-cache-expiration.dev.js new file mode 100644 index 0000000..0f10a31 --- /dev/null +++ b/workbox-v3.6.3/workbox-cache-expiration.dev.js @@ -0,0 +1,740 @@ +this.workbox = this.workbox || {}; +this.workbox.expiration = (function (exports,DBWrapper_mjs,WorkboxError_mjs,assert_mjs,logger_mjs,cacheNames_mjs,index_mjs) { + 'use strict'; + + try { + self.workbox.v['workbox:cache-expiration:3.6.3'] = 1; + } catch (e) {} // eslint-disable-line + + /* + Copyright 2017 Google Inc. + + Licensed under the Apache License, Version 2.0 (the "License"); + you may not use this file except in compliance with the License. + You may obtain a copy of the License at + + https://www.apache.org/licenses/LICENSE-2.0 + + Unless required by applicable law or agreed to in writing, software + distributed under the License is distributed on an "AS IS" BASIS, + WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + See the License for the specific language governing permissions and + limitations under the License. + */ + + const URL_KEY = 'url'; + const TIMESTAMP_KEY = 'timestamp'; + + /** + * Returns the timestamp model. + * + * @private + */ + class CacheTimestampsModel { + /** + * + * @param {string} cacheName + * + * @private + */ + constructor(cacheName) { + // TODO Check cacheName + + this._cacheName = cacheName; + this._storeName = cacheName; + + this._db = new DBWrapper_mjs.DBWrapper(this._cacheName, 2, { + onupgradeneeded: evt => this._handleUpgrade(evt) + }); + } + + /** + * Should perform an upgrade of indexedDB. + * + * @param {Event} evt + * + * @private + */ + _handleUpgrade(evt) { + const db = evt.target.result; + if (evt.oldVersion < 2) { + // Remove old databases. + if (db.objectStoreNames.contains('workbox-cache-expiration')) { + db.deleteObjectStore('workbox-cache-expiration'); + } + } + + db.createObjectStore(this._storeName, { keyPath: URL_KEY }).createIndex(TIMESTAMP_KEY, TIMESTAMP_KEY, { unique: false }); + } + + /** + * @param {string} url + * @param {number} timestamp + * + * @private + */ + setTimestamp(url, timestamp) { + var _this = this; + + return babelHelpers.asyncToGenerator(function* () { + yield _this._db.put(_this._storeName, { + [URL_KEY]: new URL(url, location).href, + [TIMESTAMP_KEY]: timestamp + }); + })(); + } + + /** + * Get all of the timestamps in the indexedDB. + * + * @return {Array} + * + * @private + */ + getAllTimestamps() { + var _this2 = this; + + return babelHelpers.asyncToGenerator(function* () { + return yield _this2._db.getAllMatching(_this2._storeName, { + index: TIMESTAMP_KEY + }); + })(); + } + + /** + * Returns the timestamp stored for a given URL. + * + * @param {string} url + * @return {number} + * + * @private + */ + getTimestamp(url) { + var _this3 = this; + + return babelHelpers.asyncToGenerator(function* () { + const timestampObject = yield _this3._db.get(_this3._storeName, url); + return timestampObject.timestamp; + })(); + } + + /** + * @param {string} url + * + * @private + */ + deleteUrl(url) { + var _this4 = this; + + return babelHelpers.asyncToGenerator(function* () { + yield _this4._db.delete(_this4._storeName, new URL(url, location).href); + })(); + } + + /** + * Removes the underlying IndexedDB object store entirely. + */ + delete() { + var _this5 = this; + + return babelHelpers.asyncToGenerator(function* () { + yield _this5._db.deleteDatabase(); + _this5._db = null; + })(); + } + } + + /* + Copyright 2017 Google Inc. + + Licensed under the Apache License, Version 2.0 (the "License"); + you may not use this file except in compliance with the License. + You may obtain a copy of the License at + + https://www.apache.org/licenses/LICENSE-2.0 + + Unless required by applicable law or agreed to in writing, software + distributed under the License is distributed on an "AS IS" BASIS, + WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + See the License for the specific language governing permissions and + limitations under the License. + */ + + /** + * The `CacheExpiration` class allows you define an expiration and / or + * limit on the number of responses stored in a + * [`Cache`](https://developer.mozilla.org/en-US/docs/Web/API/Cache). + * + * @memberof workbox.expiration + */ + class CacheExpiration { + /** + * To construct a new CacheExpiration instance you must provide at least + * one of the `config` properties. + * + * @param {string} cacheName Name of the cache to apply restrictions to. + * @param {Object} config + * @param {number} [config.maxEntries] The maximum number of entries to cache. + * Entries used the least will be removed as the maximum is reached. + * @param {number} [config.maxAgeSeconds] The maximum age of an entry before + * it's treated as stale and removed. + */ + constructor(cacheName, config = {}) { + { + assert_mjs.assert.isType(cacheName, 'string', { + moduleName: 'workbox-cache-expiration', + className: 'CacheExpiration', + funcName: 'constructor', + paramName: 'cacheName' + }); + + if (!(config.maxEntries || config.maxAgeSeconds)) { + throw new WorkboxError_mjs.WorkboxError('max-entries-or-age-required', { + moduleName: 'workbox-cache-expiration', + className: 'CacheExpiration', + funcName: 'constructor' + }); + } + + if (config.maxEntries) { + assert_mjs.assert.isType(config.maxEntries, 'number', { + moduleName: 'workbox-cache-expiration', + className: 'CacheExpiration', + funcName: 'constructor', + paramName: 'config.maxEntries' + }); + + // TODO: Assert is positive + } + + if (config.maxAgeSeconds) { + assert_mjs.assert.isType(config.maxAgeSeconds, 'number', { + moduleName: 'workbox-cache-expiration', + className: 'CacheExpiration', + funcName: 'constructor', + paramName: 'config.maxAgeSeconds' + }); + + // TODO: Assert is positive + } + } + + this._isRunning = false; + this._rerunRequested = false; + this._maxEntries = config.maxEntries; + this._maxAgeSeconds = config.maxAgeSeconds; + this._cacheName = cacheName; + this._timestampModel = new CacheTimestampsModel(cacheName); + } + + /** + * Expires entries for the given cache and given criteria. + */ + expireEntries() { + var _this = this; + + return babelHelpers.asyncToGenerator(function* () { + if (_this._isRunning) { + _this._rerunRequested = true; + return; + } + _this._isRunning = true; + + const now = Date.now(); + + // First, expire old entries, if maxAgeSeconds is set. + const oldEntries = yield _this._findOldEntries(now); + + // Once that's done, check for the maximum size. + const extraEntries = yield _this._findExtraEntries(); + + // Use a Set to remove any duplicates following the concatenation, then + // convert back into an array. + const allUrls = [...new Set(oldEntries.concat(extraEntries))]; + + yield Promise.all([_this._deleteFromCache(allUrls), _this._deleteFromIDB(allUrls)]); + + { + // TODO: break apart entries deleted due to expiration vs size restraints + if (allUrls.length > 0) { + logger_mjs.logger.groupCollapsed(`Expired ${allUrls.length} ` + `${allUrls.length === 1 ? 'entry' : 'entries'} and removed ` + `${allUrls.length === 1 ? 'it' : 'them'} from the ` + `'${_this._cacheName}' cache.`); + logger_mjs.logger.log(`Expired the following ${allUrls.length === 1 ? 'URL' : 'URLs'}:`); + allUrls.forEach(function (url) { + return logger_mjs.logger.log(` ${url}`); + }); + logger_mjs.logger.groupEnd(); + } else { + logger_mjs.logger.debug(`Cache expiration ran and found no entries to remove.`); + } + } + + _this._isRunning = false; + if (_this._rerunRequested) { + _this._rerunRequested = false; + _this.expireEntries(); + } + })(); + } + + /** + * Expires entries based on the maximum age. + * + * @param {number} expireFromTimestamp A timestamp. + * @return {Promise>} A list of the URLs that were expired. + * + * @private + */ + _findOldEntries(expireFromTimestamp) { + var _this2 = this; + + return babelHelpers.asyncToGenerator(function* () { + { + assert_mjs.assert.isType(expireFromTimestamp, 'number', { + moduleName: 'workbox-cache-expiration', + className: 'CacheExpiration', + funcName: '_findOldEntries', + paramName: 'expireFromTimestamp' + }); + } + + if (!_this2._maxAgeSeconds) { + return []; + } + + const expireOlderThan = expireFromTimestamp - _this2._maxAgeSeconds * 1000; + const timestamps = yield _this2._timestampModel.getAllTimestamps(); + const expiredUrls = []; + timestamps.forEach(function (timestampDetails) { + if (timestampDetails.timestamp < expireOlderThan) { + expiredUrls.push(timestampDetails.url); + } + }); + + return expiredUrls; + })(); + } + + /** + * @return {Promise} + * + * @private + */ + _findExtraEntries() { + var _this3 = this; + + return babelHelpers.asyncToGenerator(function* () { + const extraUrls = []; + + if (!_this3._maxEntries) { + return []; + } + + const timestamps = yield _this3._timestampModel.getAllTimestamps(); + while (timestamps.length > _this3._maxEntries) { + const lastUsed = timestamps.shift(); + extraUrls.push(lastUsed.url); + } + + return extraUrls; + })(); + } + + /** + * @param {Array} urls Array of URLs to delete from cache. + * + * @private + */ + _deleteFromCache(urls) { + var _this4 = this; + + return babelHelpers.asyncToGenerator(function* () { + const cache = yield caches.open(_this4._cacheName); + for (const url of urls) { + yield cache.delete(url); + } + })(); + } + + /** + * @param {Array} urls Array of URLs to delete from IDB + * + * @private + */ + _deleteFromIDB(urls) { + var _this5 = this; + + return babelHelpers.asyncToGenerator(function* () { + for (const url of urls) { + yield _this5._timestampModel.deleteUrl(url); + } + })(); + } + + /** + * Update the timestamp for the given URL. This ensures the when + * removing entries based on maximum entries, most recently used + * is accurate or when expiring, the timestamp is up-to-date. + * + * @param {string} url + */ + updateTimestamp(url) { + var _this6 = this; + + return babelHelpers.asyncToGenerator(function* () { + { + assert_mjs.assert.isType(url, 'string', { + moduleName: 'workbox-cache-expiration', + className: 'CacheExpiration', + funcName: 'updateTimestamp', + paramName: 'url' + }); + } + + const urlObject = new URL(url, location); + urlObject.hash = ''; + + yield _this6._timestampModel.setTimestamp(urlObject.href, Date.now()); + })(); + } + + /** + * Can be used to check if a URL has expired or not before it's used. + * + * This requires a look up from IndexedDB, so can be slow. + * + * Note: This method will not remove the cached entry, call + * `expireEntries()` to remove indexedDB and Cache entries. + * + * @param {string} url + * @return {boolean} + */ + isURLExpired(url) { + var _this7 = this; + + return babelHelpers.asyncToGenerator(function* () { + if (!_this7._maxAgeSeconds) { + throw new WorkboxError_mjs.WorkboxError(`expired-test-without-max-age`, { + methodName: 'isURLExpired', + paramName: 'maxAgeSeconds' + }); + } + const urlObject = new URL(url, location); + urlObject.hash = ''; + + const timestamp = yield _this7._timestampModel.getTimestamp(urlObject.href); + const expireOlderThan = Date.now() - _this7._maxAgeSeconds * 1000; + return timestamp < expireOlderThan; + })(); + } + + /** + * Removes the IndexedDB object store used to keep track of cache expiration + * metadata. + */ + delete() { + var _this8 = this; + + return babelHelpers.asyncToGenerator(function* () { + // Make sure we don't attempt another rerun if we're called in the middle of + // a cache expiration. + _this8._rerunRequested = false; + yield _this8._timestampModel.delete(); + })(); + } + } + + /* + Copyright 2016 Google Inc. All Rights Reserved. + Licensed under the Apache License, Version 2.0 (the "License"); + you may not use this file except in compliance with the License. + You may obtain a copy of the License at + http://www.apache.org/licenses/LICENSE-2.0 + Unless required by applicable law or agreed to in writing, software + distributed under the License is distributed on an "AS IS" BASIS, + WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + See the License for the specific language governing permissions and + limitations under the License. + */ + + /** + * This plugin can be used in the Workbox APIs to regularly enforce a + * limit on the age and / or the number of cached requests. + * + * Whenever a cached request is used or updated, this plugin will look + * at the used Cache and remove any old or extra requests. + * + * When using `maxAgeSeconds`, requests may be used *once* after expiring + * because the expiration clean up will not have occurred until *after* the + * cached request has been used. If the request has a "Date" header, then + * a light weight expiration check is performed and the request will not be + * used immediately. + * + * When using `maxEntries`, the last request to be used will be the request + * that is removed from the Cache. + * + * @memberof workbox.expiration + */ + class Plugin { + /** + * @param {Object} config + * @param {number} [config.maxEntries] The maximum number of entries to cache. + * Entries used the least will be removed as the maximum is reached. + * @param {number} [config.maxAgeSeconds] The maximum age of an entry before + * it's treated as stale and removed. + * @param {boolean} [config.purgeOnQuotaError] Whether to opt this cache in to + * automatic deletion if the available storage quota has been exceeded. + */ + constructor(config = {}) { + { + if (!(config.maxEntries || config.maxAgeSeconds)) { + throw new WorkboxError_mjs.WorkboxError('max-entries-or-age-required', { + moduleName: 'workbox-cache-expiration', + className: 'Plugin', + funcName: 'constructor' + }); + } + + if (config.maxEntries) { + assert_mjs.assert.isType(config.maxEntries, 'number', { + moduleName: 'workbox-cache-expiration', + className: 'Plugin', + funcName: 'constructor', + paramName: 'config.maxEntries' + }); + } + + if (config.maxAgeSeconds) { + assert_mjs.assert.isType(config.maxAgeSeconds, 'number', { + moduleName: 'workbox-cache-expiration', + className: 'Plugin', + funcName: 'constructor', + paramName: 'config.maxAgeSeconds' + }); + } + } + + this._config = config; + this._maxAgeSeconds = config.maxAgeSeconds; + this._cacheExpirations = new Map(); + + if (config.purgeOnQuotaError) { + index_mjs.registerQuotaErrorCallback(() => this.deleteCacheAndMetadata()); + } + } + + /** + * A simple helper method to return a CacheExpiration instance for a given + * cache name. + * + * @param {string} cacheName + * @return {CacheExpiration} + * + * @private + */ + _getCacheExpiration(cacheName) { + if (cacheName === cacheNames_mjs.cacheNames.getRuntimeName()) { + throw new WorkboxError_mjs.WorkboxError('expire-custom-caches-only'); + } + + let cacheExpiration = this._cacheExpirations.get(cacheName); + if (!cacheExpiration) { + cacheExpiration = new CacheExpiration(cacheName, this._config); + this._cacheExpirations.set(cacheName, cacheExpiration); + } + return cacheExpiration; + } + + /** + * A "lifecycle" callback that will be triggered automatically by the + * `workbox.runtimeCaching` handlers when a `Response` is about to be returned + * from a [Cache](https://developer.mozilla.org/en-US/docs/Web/API/Cache) to + * the handler. It allows the `Response` to be inspected for freshness and + * prevents it from being used if the `Response`'s `Date` header value is + * older than the configured `maxAgeSeconds`. + * + * @param {Object} options + * @param {string} options.cacheName Name of the cache the response is in. + * @param {Response} options.cachedResponse The `Response` object that's been + * read from a cache and whose freshness should be checked. + * @return {Response} Either the `cachedResponse`, if it's + * fresh, or `null` if the `Response` is older than `maxAgeSeconds`. + * + * @private + */ + cachedResponseWillBeUsed({ cacheName, cachedResponse }) { + if (!cachedResponse) { + return null; + } + + let isFresh = this._isResponseDateFresh(cachedResponse); + + // Expire entries to ensure that even if the expiration date has + // expired, it'll only be used once. + const cacheExpiration = this._getCacheExpiration(cacheName); + cacheExpiration.expireEntries(); + + return isFresh ? cachedResponse : null; + } + + /** + * @param {Response} cachedResponse + * @return {boolean} + * + * @private + */ + _isResponseDateFresh(cachedResponse) { + if (!this._maxAgeSeconds) { + // We aren't expiring by age, so return true, it's fresh + return true; + } + + // Check if the 'date' header will suffice a quick expiration check. + // See https://github.com/GoogleChromeLabs/sw-toolbox/issues/164 for + // discussion. + const dateHeaderTimestamp = this._getDateHeaderTimestamp(cachedResponse); + if (dateHeaderTimestamp === null) { + // Unable to parse date, so assume it's fresh. + return true; + } + + // If we have a valid headerTime, then our response is fresh iff the + // headerTime plus maxAgeSeconds is greater than the current time. + const now = Date.now(); + return dateHeaderTimestamp >= now - this._maxAgeSeconds * 1000; + } + + /** + * This method will extract the data header and parse it into a useful + * value. + * + * @param {Response} cachedResponse + * @return {number} + * + * @private + */ + _getDateHeaderTimestamp(cachedResponse) { + if (!cachedResponse.headers.has('date')) { + return null; + } + + const dateHeader = cachedResponse.headers.get('date'); + const parsedDate = new Date(dateHeader); + const headerTime = parsedDate.getTime(); + + // If the Date header was invalid for some reason, parsedDate.getTime() + // will return NaN. + if (isNaN(headerTime)) { + return null; + } + + return headerTime; + } + + /** + * A "lifecycle" callback that will be triggered automatically by the + * `workbox.runtimeCaching` handlers when an entry is added to a cache. + * + * @param {Object} options + * @param {string} options.cacheName Name of the cache that was updated. + * @param {string} options.request The Request for the cached entry. + * + * @private + */ + cacheDidUpdate({ cacheName, request }) { + var _this = this; + + return babelHelpers.asyncToGenerator(function* () { + { + assert_mjs.assert.isType(cacheName, 'string', { + moduleName: 'workbox-cache-expiration', + className: 'Plugin', + funcName: 'cacheDidUpdate', + paramName: 'cacheName' + }); + assert_mjs.assert.isInstance(request, Request, { + moduleName: 'workbox-cache-expiration', + className: 'Plugin', + funcName: 'cacheDidUpdate', + paramName: 'request' + }); + } + + const cacheExpiration = _this._getCacheExpiration(cacheName); + yield cacheExpiration.updateTimestamp(request.url); + yield cacheExpiration.expireEntries(); + })(); + } + + /** + * This is a helper method that performs two operations: + * + * - Deletes *all* the underlying Cache instances associated with this plugin + * instance, by calling caches.delete() on you behalf. + * - Deletes the metadata from IndexedDB used to keep track of expiration + * details for each Cache instance. + * + * When using cache expiration, calling this method is preferable to calling + * `caches.delete()` directly, since this will ensure that the IndexedDB + * metadata is also cleanly removed and open IndexedDB instances are deleted. + * + * Note that if you're *not* using cache expiration for a given cache, calling + * `caches.delete()` and passing in the cache's name should be sufficient. + * There is no Workbox-specific method needed for cleanup in that case. + */ + deleteCacheAndMetadata() { + var _this2 = this; + + return babelHelpers.asyncToGenerator(function* () { + // Do this one at a time instead of all at once via `Promise.all()` to + // reduce the chance of inconsistency if a promise rejects. + for (const [cacheName, cacheExpiration] of _this2._cacheExpirations) { + yield caches.delete(cacheName); + yield cacheExpiration.delete(); + } + + // Reset this._cacheExpirations to its initial state. + _this2._cacheExpirations = new Map(); + })(); + } + } + + /* + Copyright 2017 Google Inc. + + Licensed under the Apache License, Version 2.0 (the "License"); + you may not use this file except in compliance with the License. + You may obtain a copy of the License at + + https://www.apache.org/licenses/LICENSE-2.0 + + Unless required by applicable law or agreed to in writing, software + distributed under the License is distributed on an "AS IS" BASIS, + WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + See the License for the specific language governing permissions and + limitations under the License. + */ + + /* + Copyright 2017 Google Inc. + + Licensed under the Apache License, Version 2.0 (the "License"); + you may not use this file except in compliance with the License. + You may obtain a copy of the License at + + https://www.apache.org/licenses/LICENSE-2.0 + + Unless required by applicable law or agreed to in writing, software + distributed under the License is distributed on an "AS IS" BASIS, + WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + See the License for the specific language governing permissions and + limitations under the License. + */ + + exports.CacheExpiration = CacheExpiration; + exports.Plugin = Plugin; + + return exports; + +}({},workbox.core._private,workbox.core._private,workbox.core._private,workbox.core._private,workbox.core._private,workbox.core)); + +//# sourceMappingURL=workbox-cache-expiration.dev.js.map diff --git a/workbox-v3.6.3/workbox-cache-expiration.dev.js.map b/workbox-v3.6.3/workbox-cache-expiration.dev.js.map new file mode 100644 index 0000000..adf1df9 --- /dev/null +++ b/workbox-v3.6.3/workbox-cache-expiration.dev.js.map @@ -0,0 +1 @@ +{"version":3,"names":[],"mappings":"","sources":["packages/workbox-cache-expiration/browser.mjs"],"sourcesContent":["this.workbox = this.workbox || {};\nthis.workbox.expiration = (function (exports,DBWrapper_mjs,WorkboxError_mjs,assert_mjs,logger_mjs,cacheNames_mjs,index_mjs) {\n 'use strict';\n\n try {\n self.workbox.v['workbox:cache-expiration:3.6.3'] = 1;\n } catch (e) {} // eslint-disable-line\n\n /*\n Copyright 2017 Google Inc.\n\n Licensed under the Apache License, Version 2.0 (the \"License\");\n you may not use this file except in compliance with the License.\n You may obtain a copy of the License at\n\n https://www.apache.org/licenses/LICENSE-2.0\n\n Unless required by applicable law or agreed to in writing, software\n distributed under the License is distributed on an \"AS IS\" BASIS,\n WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\n See the License for the specific language governing permissions and\n limitations under the License.\n */\n\n const URL_KEY = 'url';\n const TIMESTAMP_KEY = 'timestamp';\n\n /**\n * Returns the timestamp model.\n *\n * @private\n */\n class CacheTimestampsModel {\n /**\n *\n * @param {string} cacheName\n *\n * @private\n */\n constructor(cacheName) {\n // TODO Check cacheName\n\n this._cacheName = cacheName;\n this._storeName = cacheName;\n\n this._db = new DBWrapper_mjs.DBWrapper(this._cacheName, 2, {\n onupgradeneeded: evt => this._handleUpgrade(evt)\n });\n }\n\n /**\n * Should perform an upgrade of indexedDB.\n *\n * @param {Event} evt\n *\n * @private\n */\n _handleUpgrade(evt) {\n const db = evt.target.result;\n if (evt.oldVersion < 2) {\n // Remove old databases.\n if (db.objectStoreNames.contains('workbox-cache-expiration')) {\n db.deleteObjectStore('workbox-cache-expiration');\n }\n }\n\n db.createObjectStore(this._storeName, { keyPath: URL_KEY }).createIndex(TIMESTAMP_KEY, TIMESTAMP_KEY, { unique: false });\n }\n\n /**\n * @param {string} url\n * @param {number} timestamp\n *\n * @private\n */\n setTimestamp(url, timestamp) {\n var _this = this;\n\n return babelHelpers.asyncToGenerator(function* () {\n yield _this._db.put(_this._storeName, {\n [URL_KEY]: new URL(url, location).href,\n [TIMESTAMP_KEY]: timestamp\n });\n })();\n }\n\n /**\n * Get all of the timestamps in the indexedDB.\n *\n * @return {Array}\n *\n * @private\n */\n getAllTimestamps() {\n var _this2 = this;\n\n return babelHelpers.asyncToGenerator(function* () {\n return yield _this2._db.getAllMatching(_this2._storeName, {\n index: TIMESTAMP_KEY\n });\n })();\n }\n\n /**\n * Returns the timestamp stored for a given URL.\n *\n * @param {string} url\n * @return {number}\n *\n * @private\n */\n getTimestamp(url) {\n var _this3 = this;\n\n return babelHelpers.asyncToGenerator(function* () {\n const timestampObject = yield _this3._db.get(_this3._storeName, url);\n return timestampObject.timestamp;\n })();\n }\n\n /**\n * @param {string} url\n *\n * @private\n */\n deleteUrl(url) {\n var _this4 = this;\n\n return babelHelpers.asyncToGenerator(function* () {\n yield _this4._db.delete(_this4._storeName, new URL(url, location).href);\n })();\n }\n\n /**\n * Removes the underlying IndexedDB object store entirely.\n */\n delete() {\n var _this5 = this;\n\n return babelHelpers.asyncToGenerator(function* () {\n yield _this5._db.deleteDatabase();\n _this5._db = null;\n })();\n }\n }\n\n /*\n Copyright 2017 Google Inc.\n\n Licensed under the Apache License, Version 2.0 (the \"License\");\n you may not use this file except in compliance with the License.\n You may obtain a copy of the License at\n\n https://www.apache.org/licenses/LICENSE-2.0\n\n Unless required by applicable law or agreed to in writing, software\n distributed under the License is distributed on an \"AS IS\" BASIS,\n WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\n See the License for the specific language governing permissions and\n limitations under the License.\n */\n\n /**\n * The `CacheExpiration` class allows you define an expiration and / or\n * limit on the number of responses stored in a\n * [`Cache`](https://developer.mozilla.org/en-US/docs/Web/API/Cache).\n *\n * @memberof workbox.expiration\n */\n class CacheExpiration {\n /**\n * To construct a new CacheExpiration instance you must provide at least\n * one of the `config` properties.\n *\n * @param {string} cacheName Name of the cache to apply restrictions to.\n * @param {Object} config\n * @param {number} [config.maxEntries] The maximum number of entries to cache.\n * Entries used the least will be removed as the maximum is reached.\n * @param {number} [config.maxAgeSeconds] The maximum age of an entry before\n * it's treated as stale and removed.\n */\n constructor(cacheName, config = {}) {\n {\n assert_mjs.assert.isType(cacheName, 'string', {\n moduleName: 'workbox-cache-expiration',\n className: 'CacheExpiration',\n funcName: 'constructor',\n paramName: 'cacheName'\n });\n\n if (!(config.maxEntries || config.maxAgeSeconds)) {\n throw new WorkboxError_mjs.WorkboxError('max-entries-or-age-required', {\n moduleName: 'workbox-cache-expiration',\n className: 'CacheExpiration',\n funcName: 'constructor'\n });\n }\n\n if (config.maxEntries) {\n assert_mjs.assert.isType(config.maxEntries, 'number', {\n moduleName: 'workbox-cache-expiration',\n className: 'CacheExpiration',\n funcName: 'constructor',\n paramName: 'config.maxEntries'\n });\n\n // TODO: Assert is positive\n }\n\n if (config.maxAgeSeconds) {\n assert_mjs.assert.isType(config.maxAgeSeconds, 'number', {\n moduleName: 'workbox-cache-expiration',\n className: 'CacheExpiration',\n funcName: 'constructor',\n paramName: 'config.maxAgeSeconds'\n });\n\n // TODO: Assert is positive\n }\n }\n\n this._isRunning = false;\n this._rerunRequested = false;\n this._maxEntries = config.maxEntries;\n this._maxAgeSeconds = config.maxAgeSeconds;\n this._cacheName = cacheName;\n this._timestampModel = new CacheTimestampsModel(cacheName);\n }\n\n /**\n * Expires entries for the given cache and given criteria.\n */\n expireEntries() {\n var _this = this;\n\n return babelHelpers.asyncToGenerator(function* () {\n if (_this._isRunning) {\n _this._rerunRequested = true;\n return;\n }\n _this._isRunning = true;\n\n const now = Date.now();\n\n // First, expire old entries, if maxAgeSeconds is set.\n const oldEntries = yield _this._findOldEntries(now);\n\n // Once that's done, check for the maximum size.\n const extraEntries = yield _this._findExtraEntries();\n\n // Use a Set to remove any duplicates following the concatenation, then\n // convert back into an array.\n const allUrls = [...new Set(oldEntries.concat(extraEntries))];\n\n yield Promise.all([_this._deleteFromCache(allUrls), _this._deleteFromIDB(allUrls)]);\n\n {\n // TODO: break apart entries deleted due to expiration vs size restraints\n if (allUrls.length > 0) {\n logger_mjs.logger.groupCollapsed(`Expired ${allUrls.length} ` + `${allUrls.length === 1 ? 'entry' : 'entries'} and removed ` + `${allUrls.length === 1 ? 'it' : 'them'} from the ` + `'${_this._cacheName}' cache.`);\n logger_mjs.logger.log(`Expired the following ${allUrls.length === 1 ? 'URL' : 'URLs'}:`);\n allUrls.forEach(function (url) {\n return logger_mjs.logger.log(` ${url}`);\n });\n logger_mjs.logger.groupEnd();\n } else {\n logger_mjs.logger.debug(`Cache expiration ran and found no entries to remove.`);\n }\n }\n\n _this._isRunning = false;\n if (_this._rerunRequested) {\n _this._rerunRequested = false;\n _this.expireEntries();\n }\n })();\n }\n\n /**\n * Expires entries based on the maximum age.\n *\n * @param {number} expireFromTimestamp A timestamp.\n * @return {Promise>} A list of the URLs that were expired.\n *\n * @private\n */\n _findOldEntries(expireFromTimestamp) {\n var _this2 = this;\n\n return babelHelpers.asyncToGenerator(function* () {\n {\n assert_mjs.assert.isType(expireFromTimestamp, 'number', {\n moduleName: 'workbox-cache-expiration',\n className: 'CacheExpiration',\n funcName: '_findOldEntries',\n paramName: 'expireFromTimestamp'\n });\n }\n\n if (!_this2._maxAgeSeconds) {\n return [];\n }\n\n const expireOlderThan = expireFromTimestamp - _this2._maxAgeSeconds * 1000;\n const timestamps = yield _this2._timestampModel.getAllTimestamps();\n const expiredUrls = [];\n timestamps.forEach(function (timestampDetails) {\n if (timestampDetails.timestamp < expireOlderThan) {\n expiredUrls.push(timestampDetails.url);\n }\n });\n\n return expiredUrls;\n })();\n }\n\n /**\n * @return {Promise}\n *\n * @private\n */\n _findExtraEntries() {\n var _this3 = this;\n\n return babelHelpers.asyncToGenerator(function* () {\n const extraUrls = [];\n\n if (!_this3._maxEntries) {\n return [];\n }\n\n const timestamps = yield _this3._timestampModel.getAllTimestamps();\n while (timestamps.length > _this3._maxEntries) {\n const lastUsed = timestamps.shift();\n extraUrls.push(lastUsed.url);\n }\n\n return extraUrls;\n })();\n }\n\n /**\n * @param {Array} urls Array of URLs to delete from cache.\n *\n * @private\n */\n _deleteFromCache(urls) {\n var _this4 = this;\n\n return babelHelpers.asyncToGenerator(function* () {\n const cache = yield caches.open(_this4._cacheName);\n for (const url of urls) {\n yield cache.delete(url);\n }\n })();\n }\n\n /**\n * @param {Array} urls Array of URLs to delete from IDB\n *\n * @private\n */\n _deleteFromIDB(urls) {\n var _this5 = this;\n\n return babelHelpers.asyncToGenerator(function* () {\n for (const url of urls) {\n yield _this5._timestampModel.deleteUrl(url);\n }\n })();\n }\n\n /**\n * Update the timestamp for the given URL. This ensures the when\n * removing entries based on maximum entries, most recently used\n * is accurate or when expiring, the timestamp is up-to-date.\n *\n * @param {string} url\n */\n updateTimestamp(url) {\n var _this6 = this;\n\n return babelHelpers.asyncToGenerator(function* () {\n {\n assert_mjs.assert.isType(url, 'string', {\n moduleName: 'workbox-cache-expiration',\n className: 'CacheExpiration',\n funcName: 'updateTimestamp',\n paramName: 'url'\n });\n }\n\n const urlObject = new URL(url, location);\n urlObject.hash = '';\n\n yield _this6._timestampModel.setTimestamp(urlObject.href, Date.now());\n })();\n }\n\n /**\n * Can be used to check if a URL has expired or not before it's used.\n *\n * This requires a look up from IndexedDB, so can be slow.\n *\n * Note: This method will not remove the cached entry, call\n * `expireEntries()` to remove indexedDB and Cache entries.\n *\n * @param {string} url\n * @return {boolean}\n */\n isURLExpired(url) {\n var _this7 = this;\n\n return babelHelpers.asyncToGenerator(function* () {\n if (!_this7._maxAgeSeconds) {\n throw new WorkboxError_mjs.WorkboxError(`expired-test-without-max-age`, {\n methodName: 'isURLExpired',\n paramName: 'maxAgeSeconds'\n });\n }\n const urlObject = new URL(url, location);\n urlObject.hash = '';\n\n const timestamp = yield _this7._timestampModel.getTimestamp(urlObject.href);\n const expireOlderThan = Date.now() - _this7._maxAgeSeconds * 1000;\n return timestamp < expireOlderThan;\n })();\n }\n\n /**\n * Removes the IndexedDB object store used to keep track of cache expiration\n * metadata.\n */\n delete() {\n var _this8 = this;\n\n return babelHelpers.asyncToGenerator(function* () {\n // Make sure we don't attempt another rerun if we're called in the middle of\n // a cache expiration.\n _this8._rerunRequested = false;\n yield _this8._timestampModel.delete();\n })();\n }\n }\n\n /*\n Copyright 2016 Google Inc. All Rights Reserved.\n Licensed under the Apache License, Version 2.0 (the \"License\");\n you may not use this file except in compliance with the License.\n You may obtain a copy of the License at\n http://www.apache.org/licenses/LICENSE-2.0\n Unless required by applicable law or agreed to in writing, software\n distributed under the License is distributed on an \"AS IS\" BASIS,\n WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\n See the License for the specific language governing permissions and\n limitations under the License.\n */\n\n /**\n * This plugin can be used in the Workbox APIs to regularly enforce a\n * limit on the age and / or the number of cached requests.\n *\n * Whenever a cached request is used or updated, this plugin will look\n * at the used Cache and remove any old or extra requests.\n *\n * When using `maxAgeSeconds`, requests may be used *once* after expiring\n * because the expiration clean up will not have occurred until *after* the\n * cached request has been used. If the request has a \"Date\" header, then\n * a light weight expiration check is performed and the request will not be\n * used immediately.\n *\n * When using `maxEntries`, the last request to be used will be the request\n * that is removed from the Cache.\n *\n * @memberof workbox.expiration\n */\n class Plugin {\n /**\n * @param {Object} config\n * @param {number} [config.maxEntries] The maximum number of entries to cache.\n * Entries used the least will be removed as the maximum is reached.\n * @param {number} [config.maxAgeSeconds] The maximum age of an entry before\n * it's treated as stale and removed.\n * @param {boolean} [config.purgeOnQuotaError] Whether to opt this cache in to\n * automatic deletion if the available storage quota has been exceeded.\n */\n constructor(config = {}) {\n {\n if (!(config.maxEntries || config.maxAgeSeconds)) {\n throw new WorkboxError_mjs.WorkboxError('max-entries-or-age-required', {\n moduleName: 'workbox-cache-expiration',\n className: 'Plugin',\n funcName: 'constructor'\n });\n }\n\n if (config.maxEntries) {\n assert_mjs.assert.isType(config.maxEntries, 'number', {\n moduleName: 'workbox-cache-expiration',\n className: 'Plugin',\n funcName: 'constructor',\n paramName: 'config.maxEntries'\n });\n }\n\n if (config.maxAgeSeconds) {\n assert_mjs.assert.isType(config.maxAgeSeconds, 'number', {\n moduleName: 'workbox-cache-expiration',\n className: 'Plugin',\n funcName: 'constructor',\n paramName: 'config.maxAgeSeconds'\n });\n }\n }\n\n this._config = config;\n this._maxAgeSeconds = config.maxAgeSeconds;\n this._cacheExpirations = new Map();\n\n if (config.purgeOnQuotaError) {\n index_mjs.registerQuotaErrorCallback(() => this.deleteCacheAndMetadata());\n }\n }\n\n /**\n * A simple helper method to return a CacheExpiration instance for a given\n * cache name.\n *\n * @param {string} cacheName\n * @return {CacheExpiration}\n *\n * @private\n */\n _getCacheExpiration(cacheName) {\n if (cacheName === cacheNames_mjs.cacheNames.getRuntimeName()) {\n throw new WorkboxError_mjs.WorkboxError('expire-custom-caches-only');\n }\n\n let cacheExpiration = this._cacheExpirations.get(cacheName);\n if (!cacheExpiration) {\n cacheExpiration = new CacheExpiration(cacheName, this._config);\n this._cacheExpirations.set(cacheName, cacheExpiration);\n }\n return cacheExpiration;\n }\n\n /**\n * A \"lifecycle\" callback that will be triggered automatically by the\n * `workbox.runtimeCaching` handlers when a `Response` is about to be returned\n * from a [Cache](https://developer.mozilla.org/en-US/docs/Web/API/Cache) to\n * the handler. It allows the `Response` to be inspected for freshness and\n * prevents it from being used if the `Response`'s `Date` header value is\n * older than the configured `maxAgeSeconds`.\n *\n * @param {Object} options\n * @param {string} options.cacheName Name of the cache the response is in.\n * @param {Response} options.cachedResponse The `Response` object that's been\n * read from a cache and whose freshness should be checked.\n * @return {Response} Either the `cachedResponse`, if it's\n * fresh, or `null` if the `Response` is older than `maxAgeSeconds`.\n *\n * @private\n */\n cachedResponseWillBeUsed({ cacheName, cachedResponse }) {\n if (!cachedResponse) {\n return null;\n }\n\n let isFresh = this._isResponseDateFresh(cachedResponse);\n\n // Expire entries to ensure that even if the expiration date has\n // expired, it'll only be used once.\n const cacheExpiration = this._getCacheExpiration(cacheName);\n cacheExpiration.expireEntries();\n\n return isFresh ? cachedResponse : null;\n }\n\n /**\n * @param {Response} cachedResponse\n * @return {boolean}\n *\n * @private\n */\n _isResponseDateFresh(cachedResponse) {\n if (!this._maxAgeSeconds) {\n // We aren't expiring by age, so return true, it's fresh\n return true;\n }\n\n // Check if the 'date' header will suffice a quick expiration check.\n // See https://github.com/GoogleChromeLabs/sw-toolbox/issues/164 for\n // discussion.\n const dateHeaderTimestamp = this._getDateHeaderTimestamp(cachedResponse);\n if (dateHeaderTimestamp === null) {\n // Unable to parse date, so assume it's fresh.\n return true;\n }\n\n // If we have a valid headerTime, then our response is fresh iff the\n // headerTime plus maxAgeSeconds is greater than the current time.\n const now = Date.now();\n return dateHeaderTimestamp >= now - this._maxAgeSeconds * 1000;\n }\n\n /**\n * This method will extract the data header and parse it into a useful\n * value.\n *\n * @param {Response} cachedResponse\n * @return {number}\n *\n * @private\n */\n _getDateHeaderTimestamp(cachedResponse) {\n if (!cachedResponse.headers.has('date')) {\n return null;\n }\n\n const dateHeader = cachedResponse.headers.get('date');\n const parsedDate = new Date(dateHeader);\n const headerTime = parsedDate.getTime();\n\n // If the Date header was invalid for some reason, parsedDate.getTime()\n // will return NaN.\n if (isNaN(headerTime)) {\n return null;\n }\n\n return headerTime;\n }\n\n /**\n * A \"lifecycle\" callback that will be triggered automatically by the\n * `workbox.runtimeCaching` handlers when an entry is added to a cache.\n *\n * @param {Object} options\n * @param {string} options.cacheName Name of the cache that was updated.\n * @param {string} options.request The Request for the cached entry.\n *\n * @private\n */\n cacheDidUpdate({ cacheName, request }) {\n var _this = this;\n\n return babelHelpers.asyncToGenerator(function* () {\n {\n assert_mjs.assert.isType(cacheName, 'string', {\n moduleName: 'workbox-cache-expiration',\n className: 'Plugin',\n funcName: 'cacheDidUpdate',\n paramName: 'cacheName'\n });\n assert_mjs.assert.isInstance(request, Request, {\n moduleName: 'workbox-cache-expiration',\n className: 'Plugin',\n funcName: 'cacheDidUpdate',\n paramName: 'request'\n });\n }\n\n const cacheExpiration = _this._getCacheExpiration(cacheName);\n yield cacheExpiration.updateTimestamp(request.url);\n yield cacheExpiration.expireEntries();\n })();\n }\n\n /**\n * This is a helper method that performs two operations:\n *\n * - Deletes *all* the underlying Cache instances associated with this plugin\n * instance, by calling caches.delete() on you behalf.\n * - Deletes the metadata from IndexedDB used to keep track of expiration\n * details for each Cache instance.\n *\n * When using cache expiration, calling this method is preferable to calling\n * `caches.delete()` directly, since this will ensure that the IndexedDB\n * metadata is also cleanly removed and open IndexedDB instances are deleted.\n *\n * Note that if you're *not* using cache expiration for a given cache, calling\n * `caches.delete()` and passing in the cache's name should be sufficient.\n * There is no Workbox-specific method needed for cleanup in that case.\n */\n deleteCacheAndMetadata() {\n var _this2 = this;\n\n return babelHelpers.asyncToGenerator(function* () {\n // Do this one at a time instead of all at once via `Promise.all()` to\n // reduce the chance of inconsistency if a promise rejects.\n for (const [cacheName, cacheExpiration] of _this2._cacheExpirations) {\n yield caches.delete(cacheName);\n yield cacheExpiration.delete();\n }\n\n // Reset this._cacheExpirations to its initial state.\n _this2._cacheExpirations = new Map();\n })();\n }\n }\n\n /*\n Copyright 2017 Google Inc.\n\n Licensed under the Apache License, Version 2.0 (the \"License\");\n you may not use this file except in compliance with the License.\n You may obtain a copy of the License at\n\n https://www.apache.org/licenses/LICENSE-2.0\n\n Unless required by applicable law or agreed to in writing, software\n distributed under the License is distributed on an \"AS IS\" BASIS,\n WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\n See the License for the specific language governing permissions and\n limitations under the License.\n */\n\n /*\n Copyright 2017 Google Inc.\n\n Licensed under the Apache License, Version 2.0 (the \"License\");\n you may not use this file except in compliance with the License.\n You may obtain a copy of the License at\n\n https://www.apache.org/licenses/LICENSE-2.0\n\n Unless required by applicable law or agreed to in writing, software\n distributed under the License is distributed on an \"AS IS\" BASIS,\n WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\n See the License for the specific language governing permissions and\n limitations under the License.\n */\n\n exports.CacheExpiration = CacheExpiration;\n exports.Plugin = Plugin;\n\n return exports;\n\n}({},workbox.core._private,workbox.core._private,workbox.core._private,workbox.core._private,workbox.core._private,workbox.core));\n"],"file":"workbox-cache-expiration.dev.js"} \ No newline at end of file diff --git a/workbox-v3.6.3/workbox-cache-expiration.prod.js b/workbox-v3.6.3/workbox-cache-expiration.prod.js new file mode 100644 index 0000000..f0a6913 --- /dev/null +++ b/workbox-v3.6.3/workbox-cache-expiration.prod.js @@ -0,0 +1,3 @@ +this.workbox=this.workbox||{},this.workbox.expiration=function(e,t,r,n,i){"use strict";try{self.workbox.v["workbox:cache-expiration:3.6.3"]=1}catch(e){}const s="url",a="timestamp";class l{constructor(e){this.e=e,this.t=e,this.r=new t.DBWrapper(this.e,2,{onupgradeneeded:e=>this.n(e)})}n(e){const t=e.target.result;e.oldVersion<2&&t.objectStoreNames.contains("workbox-cache-expiration")&&t.deleteObjectStore("workbox-cache-expiration"),t.createObjectStore(this.t,{keyPath:s}).createIndex(a,a,{unique:!1})}setTimestamp(e,t){var r=this;return babelHelpers.asyncToGenerator(function*(){yield r.r.put(r.t,{[s]:new URL(e,location).href,[a]:t})})()}getAllTimestamps(){var e=this;return babelHelpers.asyncToGenerator(function*(){return yield e.r.getAllMatching(e.t,{index:a})})()}getTimestamp(e){var t=this;return babelHelpers.asyncToGenerator(function*(){return(yield t.r.get(t.t,e)).timestamp})()}deleteUrl(e){var t=this;return babelHelpers.asyncToGenerator(function*(){yield t.r.delete(t.t,new URL(e,location).href)})()}delete(){var e=this;return babelHelpers.asyncToGenerator(function*(){yield e.r.deleteDatabase(),e.r=null})()}}class o{constructor(e,t={}){this.i=!1,this.s=!1,this.a=t.maxEntries,this.l=t.maxAgeSeconds,this.e=e,this.o=new l(e)}expireEntries(){var e=this;return babelHelpers.asyncToGenerator(function*(){if(e.i)return void(e.s=!0);e.i=!0;const t=Date.now(),r=yield e.c(t),n=yield e.u(),i=[...new Set(r.concat(n))];yield Promise.all([e.h(i),e.d(i)]),e.i=!1,e.s&&(e.s=!1,e.expireEntries())})()}c(e){var t=this;return babelHelpers.asyncToGenerator(function*(){if(!t.l)return[];const r=e-1e3*t.l,n=[];return(yield t.o.getAllTimestamps()).forEach(function(e){e.timestampe.a;){const e=r.shift();t.push(e.url)}return t})()}h(e){var t=this;return babelHelpers.asyncToGenerator(function*(){const r=yield caches.open(t.e);for(const t of e)yield r.delete(t)})()}d(e){var t=this;return babelHelpers.asyncToGenerator(function*(){for(const r of e)yield t.o.deleteUrl(r)})()}updateTimestamp(e){var t=this;return babelHelpers.asyncToGenerator(function*(){const r=new URL(e,location);r.hash="",yield t.o.setTimestamp(r.href,Date.now())})()}isURLExpired(e){var t=this;return babelHelpers.asyncToGenerator(function*(){if(!t.l)throw new r.WorkboxError("expired-test-without-max-age",{methodName:"isURLExpired",paramName:"maxAgeSeconds"});const n=new URL(e,location);return n.hash="",(yield t.o.getTimestamp(n.href))this.deleteCacheAndMetadata())}f(e){if(e===n.cacheNames.getRuntimeName())throw new r.WorkboxError("expire-custom-caches-only");let t=this.b.get(e);return t||(t=new o(e,this.p),this.b.set(e,t)),t}cachedResponseWillBeUsed({cacheName:e,cachedResponse:t}){if(!t)return null;let r=this.m(t);return this.f(e).expireEntries(),r?t:null}m(e){if(!this.l)return!0;const t=this.y(e);return null===t||t>=Date.now()-1e3*this.l}y(e){if(!e.headers.has("date"))return null;const t=e.headers.get("date"),r=new Date(t).getTime();return isNaN(r)?null:r}cacheDidUpdate({cacheName:e,request:t}){var r=this;return babelHelpers.asyncToGenerator(function*(){const n=r.f(e);yield n.updateTimestamp(t.url),yield n.expireEntries()})()}deleteCacheAndMetadata(){var e=this;return babelHelpers.asyncToGenerator(function*(){for(const[t,r]of e.b)yield caches.delete(t),yield r.delete();e.b=new Map})()}},e}({},workbox.core._private,workbox.core._private,workbox.core._private,workbox.core); + +//# sourceMappingURL=workbox-cache-expiration.prod.js.map diff --git a/workbox-v3.6.3/workbox-cache-expiration.prod.js.map b/workbox-v3.6.3/workbox-cache-expiration.prod.js.map new file mode 100644 index 0000000..84d70ca --- /dev/null +++ b/workbox-v3.6.3/workbox-cache-expiration.prod.js.map @@ -0,0 +1 @@ +{"version":3,"names":[],"mappings":"","sources":["packages/workbox-cache-expiration/browser.mjs"],"sourcesContent":["this.workbox=this.workbox||{},this.workbox.expiration=function(e,t,r,n,i){\"use strict\";try{self.workbox.v[\"workbox:cache-expiration:3.6.3\"]=1}catch(e){}const s=\"url\",a=\"timestamp\";class l{constructor(e){this.e=e,this.t=e,this.r=new t.DBWrapper(this.e,2,{onupgradeneeded:e=>this.n(e)})}n(e){const t=e.target.result;e.oldVersion<2&&t.objectStoreNames.contains(\"workbox-cache-expiration\")&&t.deleteObjectStore(\"workbox-cache-expiration\"),t.createObjectStore(this.t,{keyPath:s}).createIndex(a,a,{unique:!1})}setTimestamp(e,t){var r=this;return babelHelpers.asyncToGenerator(function*(){yield r.r.put(r.t,{[s]:new URL(e,location).href,[a]:t})})()}getAllTimestamps(){var e=this;return babelHelpers.asyncToGenerator(function*(){return yield e.r.getAllMatching(e.t,{index:a})})()}getTimestamp(e){var t=this;return babelHelpers.asyncToGenerator(function*(){return(yield t.r.get(t.t,e)).timestamp})()}deleteUrl(e){var t=this;return babelHelpers.asyncToGenerator(function*(){yield t.r.delete(t.t,new URL(e,location).href)})()}delete(){var e=this;return babelHelpers.asyncToGenerator(function*(){yield e.r.deleteDatabase(),e.r=null})()}}class o{constructor(e,t={}){this.i=!1,this.s=!1,this.a=t.maxEntries,this.l=t.maxAgeSeconds,this.e=e,this.o=new l(e)}expireEntries(){var e=this;return babelHelpers.asyncToGenerator(function*(){if(e.i)return void(e.s=!0);e.i=!0;const t=Date.now(),r=yield e.c(t),n=yield e.u(),i=[...new Set(r.concat(n))];yield Promise.all([e.h(i),e.d(i)]),e.i=!1,e.s&&(e.s=!1,e.expireEntries())})()}c(e){var t=this;return babelHelpers.asyncToGenerator(function*(){if(!t.l)return[];const r=e-1e3*t.l,n=[];return(yield t.o.getAllTimestamps()).forEach(function(e){e.timestampe.a;){const e=r.shift();t.push(e.url)}return t})()}h(e){var t=this;return babelHelpers.asyncToGenerator(function*(){const r=yield caches.open(t.e);for(const t of e)yield r.delete(t)})()}d(e){var t=this;return babelHelpers.asyncToGenerator(function*(){for(const r of e)yield t.o.deleteUrl(r)})()}updateTimestamp(e){var t=this;return babelHelpers.asyncToGenerator(function*(){const r=new URL(e,location);r.hash=\"\",yield t.o.setTimestamp(r.href,Date.now())})()}isURLExpired(e){var t=this;return babelHelpers.asyncToGenerator(function*(){if(!t.l)throw new r.WorkboxError(\"expired-test-without-max-age\",{methodName:\"isURLExpired\",paramName:\"maxAgeSeconds\"});const n=new URL(e,location);return n.hash=\"\",(yield t.o.getTimestamp(n.href))this.deleteCacheAndMetadata())}f(e){if(e===n.cacheNames.getRuntimeName())throw new r.WorkboxError(\"expire-custom-caches-only\");let t=this.b.get(e);return t||(t=new o(e,this.p),this.b.set(e,t)),t}cachedResponseWillBeUsed({cacheName:e,cachedResponse:t}){if(!t)return null;let r=this.m(t);return this.f(e).expireEntries(),r?t:null}m(e){if(!this.l)return!0;const t=this.y(e);return null===t||t>=Date.now()-1e3*this.l}y(e){if(!e.headers.has(\"date\"))return null;const t=e.headers.get(\"date\"),r=new Date(t).getTime();return isNaN(r)?null:r}cacheDidUpdate({cacheName:e,request:t}){var r=this;return babelHelpers.asyncToGenerator(function*(){const n=r.f(e);yield n.updateTimestamp(t.url),yield n.expireEntries()})()}deleteCacheAndMetadata(){var e=this;return babelHelpers.asyncToGenerator(function*(){for(const[t,r]of e.b)yield caches.delete(t),yield r.delete();e.b=new Map})()}},e}({},workbox.core._private,workbox.core._private,workbox.core._private,workbox.core);\n"],"file":"workbox-cache-expiration.prod.js"} \ No newline at end of file diff --git a/workbox-v3.6.3/workbox-cacheable-response.dev.js b/workbox-v3.6.3/workbox-cacheable-response.dev.js new file mode 100644 index 0000000..64a049d --- /dev/null +++ b/workbox-v3.6.3/workbox-cacheable-response.dev.js @@ -0,0 +1,236 @@ +this.workbox = this.workbox || {}; +this.workbox.cacheableResponse = (function (exports,WorkboxError_mjs,assert_mjs,getFriendlyURL_mjs,logger_mjs) { + 'use strict'; + + try { + self.workbox.v['workbox:cacheable-response:3.6.3'] = 1; + } catch (e) {} // eslint-disable-line + + /* + Copyright 2017 Google Inc. + + Licensed under the Apache License, Version 2.0 (the "License"); + you may not use this file except in compliance with the License. + You may obtain a copy of the License at + + https://www.apache.org/licenses/LICENSE-2.0 + + Unless required by applicable law or agreed to in writing, software + distributed under the License is distributed on an "AS IS" BASIS, + WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + See the License for the specific language governing permissions and + limitations under the License. + */ + + /** + * This class allows you to set up rules determining what + * status codes and/or headers need to be present in order for a + * [`Response`](https://developer.mozilla.org/en-US/docs/Web/API/Response) + * to be considered cacheable. + * + * @memberof workbox.cacheableResponse + */ + class CacheableResponse { + /** + * To construct a new CacheableResponse instance you must provide at least + * one of the `config` properties. + * + * If both `statuses` and `headers` are specified, then both conditions must + * be met for the `Response` to be considered cacheable. + * + * @param {Object} config + * @param {Array} [config.statuses] One or more status codes that a + * `Response` can have and be considered cacheable. + * @param {Object} [config.headers] A mapping of header names + * and expected values that a `Response` can have and be considered cacheable. + * If multiple headers are provided, only one needs to be present. + */ + constructor(config = {}) { + { + if (!(config.statuses || config.headers)) { + throw new WorkboxError_mjs.WorkboxError('statuses-or-headers-required', { + moduleName: 'workbox-cacheable-response', + className: 'CacheableResponse', + funcName: 'constructor' + }); + } + + if (config.statuses) { + assert_mjs.assert.isArray(config.statuses, { + moduleName: 'workbox-cacheable-response', + className: 'CacheableResponse', + funcName: 'constructor', + paramName: 'config.statuses' + }); + } + + if (config.headers) { + assert_mjs.assert.isType(config.headers, 'object', { + moduleName: 'workbox-cacheable-response', + className: 'CacheableResponse', + funcName: 'constructor', + paramName: 'config.headers' + }); + } + } + + this._statuses = config.statuses; + this._headers = config.headers; + } + + /** + * Checks a response to see whether it's cacheable or not, based on this + * object's configuration. + * + * @param {Response} response The response whose cacheability is being + * checked. + * @return {boolean} `true` if the `Response` is cacheable, and `false` + * otherwise. + */ + isResponseCacheable(response) { + { + assert_mjs.assert.isInstance(response, Response, { + moduleName: 'workbox-cacheable-response', + className: 'CacheableResponse', + funcName: 'isResponseCacheable', + paramName: 'response' + }); + } + + let cacheable = true; + + if (this._statuses) { + cacheable = this._statuses.includes(response.status); + } + + if (this._headers && cacheable) { + cacheable = Object.keys(this._headers).some(headerName => { + return response.headers.get(headerName) === this._headers[headerName]; + }); + } + + { + if (!cacheable) { + logger_mjs.logger.groupCollapsed(`The request for ` + `'${getFriendlyURL_mjs.getFriendlyURL(response.url)}' returned a response that does ` + `not meet the criteria for being cached.`); + + logger_mjs.logger.groupCollapsed(`View cacheability criteria here.`); + logger_mjs.logger.unprefixed.log(`Cacheable statuses: ` + JSON.stringify(this._statuses)); + logger_mjs.logger.unprefixed.log(`Cacheable headers: ` + JSON.stringify(this._headers, null, 2)); + logger_mjs.logger.groupEnd(); + + const logFriendlyHeaders = {}; + response.headers.forEach((value, key) => { + logFriendlyHeaders[key] = value; + }); + + logger_mjs.logger.groupCollapsed(`View response status and headers here.`); + logger_mjs.logger.unprefixed.log(`Response status: ` + response.status); + logger_mjs.logger.unprefixed.log(`Response headers: ` + JSON.stringify(logFriendlyHeaders, null, 2)); + logger_mjs.logger.groupEnd(); + + logger_mjs.logger.groupCollapsed(`View full response details here.`); + logger_mjs.logger.unprefixed.log(response.headers); + logger_mjs.logger.unprefixed.log(response); + logger_mjs.logger.groupEnd(); + + logger_mjs.logger.groupEnd(); + } + } + + return cacheable; + } + } + + /* + Copyright 2016 Google Inc. All Rights Reserved. + Licensed under the Apache License, Version 2.0 (the "License"); + you may not use this file except in compliance with the License. + You may obtain a copy of the License at + http://www.apache.org/licenses/LICENSE-2.0 + Unless required by applicable law or agreed to in writing, software + distributed under the License is distributed on an "AS IS" BASIS, + WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + See the License for the specific language governing permissions and + limitations under the License. + */ + + /** + * A class implementing the `cacheWillUpdate` lifecycle callback. This makes it + * easier to add in cacheability checks to requests made via Workbox's built-in + * strategies. + * + * @memberof workbox.cacheableResponse + */ + class Plugin { + /** + * To construct a new cacheable response Plugin instance you must provide at + * least one of the `config` properties. + * + * If both `statuses` and `headers` are specified, then both conditions must + * be met for the `Response` to be considered cacheable. + * + * @param {Object} config + * @param {Array} [config.statuses] One or more status codes that a + * `Response` can have and be considered cacheable. + * @param {Object} [config.headers] A mapping of header names + * and expected values that a `Response` can have and be considered cacheable. + * If multiple headers are provided, only one needs to be present. + */ + constructor(config) { + this._cacheableResponse = new CacheableResponse(config); + } + + /** + * @param {Object} options + * @param {Response} options.response + * @return {boolean} + * @private + */ + cacheWillUpdate({ response }) { + if (this._cacheableResponse.isResponseCacheable(response)) { + return response; + } + return null; + } + } + + /* + Copyright 2017 Google Inc. + + Licensed under the Apache License, Version 2.0 (the "License"); + you may not use this file except in compliance with the License. + You may obtain a copy of the License at + + https://www.apache.org/licenses/LICENSE-2.0 + + Unless required by applicable law or agreed to in writing, software + distributed under the License is distributed on an "AS IS" BASIS, + WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + See the License for the specific language governing permissions and + limitations under the License. + */ + + /* + Copyright 2017 Google Inc. + + Licensed under the Apache License, Version 2.0 (the "License"); + you may not use this file except in compliance with the License. + You may obtain a copy of the License at + + https://www.apache.org/licenses/LICENSE-2.0 + + Unless required by applicable law or agreed to in writing, software + distributed under the License is distributed on an "AS IS" BASIS, + WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + See the License for the specific language governing permissions and + limitations under the License. + */ + + exports.CacheableResponse = CacheableResponse; + exports.Plugin = Plugin; + + return exports; + +}({},workbox.core._private,workbox.core._private,workbox.core._private,workbox.core._private)); + +//# sourceMappingURL=workbox-cacheable-response.dev.js.map diff --git a/workbox-v3.6.3/workbox-cacheable-response.dev.js.map b/workbox-v3.6.3/workbox-cacheable-response.dev.js.map new file mode 100644 index 0000000..3e4d2ab --- /dev/null +++ b/workbox-v3.6.3/workbox-cacheable-response.dev.js.map @@ -0,0 +1 @@ +{"version":3,"names":[],"mappings":"","sources":["packages/workbox-cacheable-response/browser.mjs"],"sourcesContent":["this.workbox = this.workbox || {};\nthis.workbox.cacheableResponse = (function (exports,WorkboxError_mjs,assert_mjs,getFriendlyURL_mjs,logger_mjs) {\n 'use strict';\n\n try {\n self.workbox.v['workbox:cacheable-response:3.6.3'] = 1;\n } catch (e) {} // eslint-disable-line\n\n /*\n Copyright 2017 Google Inc.\n\n Licensed under the Apache License, Version 2.0 (the \"License\");\n you may not use this file except in compliance with the License.\n You may obtain a copy of the License at\n\n https://www.apache.org/licenses/LICENSE-2.0\n\n Unless required by applicable law or agreed to in writing, software\n distributed under the License is distributed on an \"AS IS\" BASIS,\n WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\n See the License for the specific language governing permissions and\n limitations under the License.\n */\n\n /**\n * This class allows you to set up rules determining what\n * status codes and/or headers need to be present in order for a\n * [`Response`](https://developer.mozilla.org/en-US/docs/Web/API/Response)\n * to be considered cacheable.\n *\n * @memberof workbox.cacheableResponse\n */\n class CacheableResponse {\n /**\n * To construct a new CacheableResponse instance you must provide at least\n * one of the `config` properties.\n *\n * If both `statuses` and `headers` are specified, then both conditions must\n * be met for the `Response` to be considered cacheable.\n *\n * @param {Object} config\n * @param {Array} [config.statuses] One or more status codes that a\n * `Response` can have and be considered cacheable.\n * @param {Object} [config.headers] A mapping of header names\n * and expected values that a `Response` can have and be considered cacheable.\n * If multiple headers are provided, only one needs to be present.\n */\n constructor(config = {}) {\n {\n if (!(config.statuses || config.headers)) {\n throw new WorkboxError_mjs.WorkboxError('statuses-or-headers-required', {\n moduleName: 'workbox-cacheable-response',\n className: 'CacheableResponse',\n funcName: 'constructor'\n });\n }\n\n if (config.statuses) {\n assert_mjs.assert.isArray(config.statuses, {\n moduleName: 'workbox-cacheable-response',\n className: 'CacheableResponse',\n funcName: 'constructor',\n paramName: 'config.statuses'\n });\n }\n\n if (config.headers) {\n assert_mjs.assert.isType(config.headers, 'object', {\n moduleName: 'workbox-cacheable-response',\n className: 'CacheableResponse',\n funcName: 'constructor',\n paramName: 'config.headers'\n });\n }\n }\n\n this._statuses = config.statuses;\n this._headers = config.headers;\n }\n\n /**\n * Checks a response to see whether it's cacheable or not, based on this\n * object's configuration.\n *\n * @param {Response} response The response whose cacheability is being\n * checked.\n * @return {boolean} `true` if the `Response` is cacheable, and `false`\n * otherwise.\n */\n isResponseCacheable(response) {\n {\n assert_mjs.assert.isInstance(response, Response, {\n moduleName: 'workbox-cacheable-response',\n className: 'CacheableResponse',\n funcName: 'isResponseCacheable',\n paramName: 'response'\n });\n }\n\n let cacheable = true;\n\n if (this._statuses) {\n cacheable = this._statuses.includes(response.status);\n }\n\n if (this._headers && cacheable) {\n cacheable = Object.keys(this._headers).some(headerName => {\n return response.headers.get(headerName) === this._headers[headerName];\n });\n }\n\n {\n if (!cacheable) {\n logger_mjs.logger.groupCollapsed(`The request for ` + `'${getFriendlyURL_mjs.getFriendlyURL(response.url)}' returned a response that does ` + `not meet the criteria for being cached.`);\n\n logger_mjs.logger.groupCollapsed(`View cacheability criteria here.`);\n logger_mjs.logger.unprefixed.log(`Cacheable statuses: ` + JSON.stringify(this._statuses));\n logger_mjs.logger.unprefixed.log(`Cacheable headers: ` + JSON.stringify(this._headers, null, 2));\n logger_mjs.logger.groupEnd();\n\n const logFriendlyHeaders = {};\n response.headers.forEach((value, key) => {\n logFriendlyHeaders[key] = value;\n });\n\n logger_mjs.logger.groupCollapsed(`View response status and headers here.`);\n logger_mjs.logger.unprefixed.log(`Response status: ` + response.status);\n logger_mjs.logger.unprefixed.log(`Response headers: ` + JSON.stringify(logFriendlyHeaders, null, 2));\n logger_mjs.logger.groupEnd();\n\n logger_mjs.logger.groupCollapsed(`View full response details here.`);\n logger_mjs.logger.unprefixed.log(response.headers);\n logger_mjs.logger.unprefixed.log(response);\n logger_mjs.logger.groupEnd();\n\n logger_mjs.logger.groupEnd();\n }\n }\n\n return cacheable;\n }\n }\n\n /*\n Copyright 2016 Google Inc. All Rights Reserved.\n Licensed under the Apache License, Version 2.0 (the \"License\");\n you may not use this file except in compliance with the License.\n You may obtain a copy of the License at\n http://www.apache.org/licenses/LICENSE-2.0\n Unless required by applicable law or agreed to in writing, software\n distributed under the License is distributed on an \"AS IS\" BASIS,\n WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\n See the License for the specific language governing permissions and\n limitations under the License.\n */\n\n /**\n * A class implementing the `cacheWillUpdate` lifecycle callback. This makes it\n * easier to add in cacheability checks to requests made via Workbox's built-in\n * strategies.\n *\n * @memberof workbox.cacheableResponse\n */\n class Plugin {\n /**\n * To construct a new cacheable response Plugin instance you must provide at\n * least one of the `config` properties.\n *\n * If both `statuses` and `headers` are specified, then both conditions must\n * be met for the `Response` to be considered cacheable.\n *\n * @param {Object} config\n * @param {Array} [config.statuses] One or more status codes that a\n * `Response` can have and be considered cacheable.\n * @param {Object} [config.headers] A mapping of header names\n * and expected values that a `Response` can have and be considered cacheable.\n * If multiple headers are provided, only one needs to be present.\n */\n constructor(config) {\n this._cacheableResponse = new CacheableResponse(config);\n }\n\n /**\n * @param {Object} options\n * @param {Response} options.response\n * @return {boolean}\n * @private\n */\n cacheWillUpdate({ response }) {\n if (this._cacheableResponse.isResponseCacheable(response)) {\n return response;\n }\n return null;\n }\n }\n\n /*\n Copyright 2017 Google Inc.\n\n Licensed under the Apache License, Version 2.0 (the \"License\");\n you may not use this file except in compliance with the License.\n You may obtain a copy of the License at\n\n https://www.apache.org/licenses/LICENSE-2.0\n\n Unless required by applicable law or agreed to in writing, software\n distributed under the License is distributed on an \"AS IS\" BASIS,\n WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\n See the License for the specific language governing permissions and\n limitations under the License.\n */\n\n /*\n Copyright 2017 Google Inc.\n\n Licensed under the Apache License, Version 2.0 (the \"License\");\n you may not use this file except in compliance with the License.\n You may obtain a copy of the License at\n\n https://www.apache.org/licenses/LICENSE-2.0\n\n Unless required by applicable law or agreed to in writing, software\n distributed under the License is distributed on an \"AS IS\" BASIS,\n WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\n See the License for the specific language governing permissions and\n limitations under the License.\n */\n\n exports.CacheableResponse = CacheableResponse;\n exports.Plugin = Plugin;\n\n return exports;\n\n}({},workbox.core._private,workbox.core._private,workbox.core._private,workbox.core._private));\n"],"file":"workbox-cacheable-response.dev.js"} \ No newline at end of file diff --git a/workbox-v3.6.3/workbox-cacheable-response.prod.js b/workbox-v3.6.3/workbox-cacheable-response.prod.js new file mode 100644 index 0000000..76f159c --- /dev/null +++ b/workbox-v3.6.3/workbox-cacheable-response.prod.js @@ -0,0 +1,3 @@ +this.workbox=this.workbox||{},this.workbox.cacheableResponse=function(t){"use strict";try{self.workbox.v["workbox:cacheable-response:3.6.3"]=1}catch(t){}class s{constructor(t={}){this.t=t.statuses,this.s=t.headers}isResponseCacheable(t){let s=!0;return this.t&&(s=this.t.includes(t.status)),this.s&&s&&(s=Object.keys(this.s).some(s=>t.headers.get(s)===this.s[s])),s}}return t.CacheableResponse=s,t.Plugin=class{constructor(t){this.e=new s(t)}cacheWillUpdate({response:t}){return this.e.isResponseCacheable(t)?t:null}},t}({}); + +//# sourceMappingURL=workbox-cacheable-response.prod.js.map diff --git a/workbox-v3.6.3/workbox-cacheable-response.prod.js.map b/workbox-v3.6.3/workbox-cacheable-response.prod.js.map new file mode 100644 index 0000000..6471d14 --- /dev/null +++ b/workbox-v3.6.3/workbox-cacheable-response.prod.js.map @@ -0,0 +1 @@ +{"version":3,"names":[],"mappings":"","sources":["packages/workbox-cacheable-response/browser.mjs"],"sourcesContent":["this.workbox=this.workbox||{},this.workbox.cacheableResponse=function(t){\"use strict\";try{self.workbox.v[\"workbox:cacheable-response:3.6.3\"]=1}catch(t){}class s{constructor(t={}){this.t=t.statuses,this.s=t.headers}isResponseCacheable(t){let s=!0;return this.t&&(s=this.t.includes(t.status)),this.s&&s&&(s=Object.keys(this.s).some(s=>t.headers.get(s)===this.s[s])),s}}return t.CacheableResponse=s,t.Plugin=class{constructor(t){this.e=new s(t)}cacheWillUpdate({response:t}){return this.e.isResponseCacheable(t)?t:null}},t}({});\n"],"file":"workbox-cacheable-response.prod.js"} \ No newline at end of file diff --git a/workbox-v3.6.3/workbox-core.dev.js b/workbox-v3.6.3/workbox-core.dev.js new file mode 100644 index 0000000..1196c16 --- /dev/null +++ b/workbox-v3.6.3/workbox-core.dev.js @@ -0,0 +1,1736 @@ +/* eslint-disable */ +// This is extracted from the Babel runtime (original source: https://github.com/babel/babel/blob/9e0f5235b1ca5167c368a576ad7c5af62d20b0e3/packages/babel-helpers/src/helpers.js#L240). +// As part of the Rollup bundling process, it's injected once into workbox-core +// and reused throughout all of the other modules, avoiding code duplication. +// See https://github.com/GoogleChrome/workbox/pull/1048#issuecomment-344698046 +// for further background. +self.babelHelpers = { + asyncToGenerator: function(fn) { + return function() { + var gen = fn.apply(this, arguments); + return new Promise(function(resolve, reject) { + function step(key, arg) { + try { + var info = gen[key](arg); + var value = info.value; + } catch (error) { + reject(error); + return; + } + + if (info.done) { + resolve(value); + } else { + return Promise.resolve(value).then(function(value) { + step('next', value); + }, function(err) { + step('throw', err); + }); + } + } + + return step('next'); + }); + }; + }, +}; + +this.workbox = this.workbox || {}; +this.workbox.core = (function () { + 'use strict'; + + try { + self.workbox.v['workbox:core:3.6.3'] = 1; + } catch (e) {} // eslint-disable-line + + /* + Copyright 2017 Google Inc. + + Licensed under the Apache License, Version 2.0 (the "License"); + you may not use this file except in compliance with the License. + You may obtain a copy of the License at + + https://www.apache.org/licenses/LICENSE-2.0 + + Unless required by applicable law or agreed to in writing, software + distributed under the License is distributed on an "AS IS" BASIS, + WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + See the License for the specific language governing permissions and + limitations under the License. + */ + + /** + * The available log levels in Workbox: debug, log, warn, error and silent. + * + * @property {int} debug Prints all logs from Workbox. Useful for debugging. + * @property {int} log Prints console log, warn, error and groups. Default for + * debug builds. + * @property {int} warn Prints console warn, error and groups. Default for + * non-debug builds. + * @property {int} error Print console error and groups. + * @property {int} silent Force no logging from Workbox. + * + * @alias workbox.core.LOG_LEVELS + */ + + var LOG_LEVELS = { + debug: 0, + log: 1, + warn: 2, + error: 3, + silent: 4 + }; + + /* + Copyright 2017 Google Inc. + + Licensed under the Apache License, Version 2.0 (the "License"); + you may not use this file except in compliance with the License. + You may obtain a copy of the License at + + https://www.apache.org/licenses/LICENSE-2.0 + + Unless required by applicable law or agreed to in writing, software + distributed under the License is distributed on an "AS IS" BASIS, + WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + See the License for the specific language governing permissions and + limitations under the License. + */ + + // Safari doesn't print all console.groupCollapsed() arguments. + // Related bug: https://bugs.webkit.org/show_bug.cgi?id=182754 + const isSafari = /^((?!chrome|android).)*safari/i.test(navigator.userAgent); + + const GREY = `#7f8c8d`; + const GREEN = `#2ecc71`; + const YELLOW = `#f39c12`; + const RED = `#c0392b`; + const BLUE = `#3498db`; + + const getDefaultLogLevel = () => LOG_LEVELS.log; + + let logLevel = getDefaultLogLevel(); + const shouldPrint = minLevel => logLevel <= minLevel; + const setLoggerLevel = newLogLevel => logLevel = newLogLevel; + const getLoggerLevel = () => logLevel; + + // We always want groups to be logged unless logLevel is silent. + const groupLevel = LOG_LEVELS.error; + + const _print = function (keyName, logArgs, levelColor) { + const logLevel = keyName.indexOf('group') === 0 ? groupLevel : LOG_LEVELS[keyName]; + if (!shouldPrint(logLevel)) { + return; + } + + if (!levelColor || keyName === 'groupCollapsed' && isSafari) { + console[keyName](...logArgs); + return; + } + + const logPrefix = ['%cworkbox', `background: ${levelColor}; color: white; padding: 2px 0.5em; ` + `border-radius: 0.5em;`]; + console[keyName](...logPrefix, ...logArgs); + }; + + const groupEnd = () => { + if (shouldPrint(groupLevel)) { + console.groupEnd(); + } + }; + + const defaultExport = { + groupEnd, + unprefixed: { + groupEnd + } + }; + + const setupLogs = (keyName, color) => { + defaultExport[keyName] = (...args) => _print(keyName, args, color); + defaultExport.unprefixed[keyName] = (...args) => _print(keyName, args); + }; + + const levelToColor = { + debug: GREY, + log: GREEN, + warn: YELLOW, + error: RED, + groupCollapsed: BLUE + }; + Object.keys(levelToColor).forEach(keyName => setupLogs(keyName, levelToColor[keyName])); + + /* + Copyright 2017 Google Inc. + + Licensed under the Apache License, Version 2.0 (the "License"); + you may not use this file except in compliance with the License. + You may obtain a copy of the License at + + https://www.apache.org/licenses/LICENSE-2.0 + + Unless required by applicable law or agreed to in writing, software + distributed under the License is distributed on an "AS IS" BASIS, + WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + See the License for the specific language governing permissions and + limitations under the License. + */ + + var messages = { + 'invalid-value': ({ paramName, validValueDescription, value }) => { + if (!paramName || !validValueDescription) { + throw new Error(`Unexpected input to 'invalid-value' error.`); + } + return `The '${paramName}' parameter was given a value with an ` + `unexpected value. ${validValueDescription} Received a value of ` + `${JSON.stringify(value)}.`; + }, + + 'not-in-sw': ({ moduleName }) => { + if (!moduleName) { + throw new Error(`Unexpected input to 'not-in-sw' error.`); + } + return `The '${moduleName}' must be used in a service worker.`; + }, + + 'not-an-array': ({ moduleName, className, funcName, paramName }) => { + if (!moduleName || !className || !funcName || !paramName) { + throw new Error(`Unexpected input to 'not-an-array' error.`); + } + return `The parameter '${paramName}' passed into ` + `'${moduleName}.${className}.${funcName}()' must be an array.`; + }, + + 'incorrect-type': ({ expectedType, paramName, moduleName, className, + funcName }) => { + if (!expectedType || !paramName || !moduleName || !funcName) { + throw new Error(`Unexpected input to 'incorrect-type' error.`); + } + return `The parameter '${paramName}' passed into ` + `'${moduleName}.${className ? className + '.' : ''}` + `${funcName}()' must be of type ${expectedType}.`; + }, + + 'incorrect-class': ({ expectedClass, paramName, moduleName, className, + funcName, isReturnValueProblem }) => { + if (!expectedClass || !moduleName || !funcName) { + throw new Error(`Unexpected input to 'incorrect-class' error.`); + } + + if (isReturnValueProblem) { + return `The return value from ` + `'${moduleName}.${className ? className + '.' : ''}${funcName}()' ` + `must be an instance of class ${expectedClass.name}.`; + } + + return `The parameter '${paramName}' passed into ` + `'${moduleName}.${className ? className + '.' : ''}${funcName}()' ` + `must be an instance of class ${expectedClass.name}.`; + }, + + 'missing-a-method': ({ expectedMethod, paramName, moduleName, className, + funcName }) => { + if (!expectedMethod || !paramName || !moduleName || !className || !funcName) { + throw new Error(`Unexpected input to 'missing-a-method' error.`); + } + return `${moduleName}.${className}.${funcName}() expected the ` + `'${paramName}' parameter to expose a '${expectedMethod}' method.`; + }, + + 'add-to-cache-list-unexpected-type': ({ entry }) => { + return `An unexpected entry was passed to ` + `'workbox-precaching.PrecacheController.addToCacheList()' The entry ` + `'${JSON.stringify(entry)}' isn't supported. You must supply an array of ` + `strings with one or more characters, objects with a url property or ` + `Request objects.`; + }, + + 'add-to-cache-list-conflicting-entries': ({ firstEntry, secondEntry }) => { + if (!firstEntry || !secondEntry) { + throw new Error(`Unexpected input to ` + `'add-to-cache-list-duplicate-entries' error.`); + } + + return `Two of the entries passed to ` + `'workbox-precaching.PrecacheController.addToCacheList()' had matching ` + `URLs but different revision details. This means workbox-precaching ` + `is unable to determine cache the asset correctly. Please remove one ` + `of the entries.`; + }, + + 'plugin-error-request-will-fetch': ({ thrownError }) => { + if (!thrownError) { + throw new Error(`Unexpected input to ` + `'plugin-error-request-will-fetch', error.`); + } + + return `An error was thrown by a plugins 'requestWillFetch()' method. ` + `The thrown error message was: '${thrownError.message}'.`; + }, + + 'invalid-cache-name': ({ cacheNameId, value }) => { + if (!cacheNameId) { + throw new Error(`Expected a 'cacheNameId' for error 'invalid-cache-name'`); + } + + return `You must provide a name containing at least one character for ` + `setCacheDeatils({${cacheNameId}: '...'}). Received a value of ` + `'${JSON.stringify(value)}'`; + }, + + 'unregister-route-but-not-found-with-method': ({ method }) => { + if (!method) { + throw new Error(`Unexpected input to ` + `'unregister-route-but-not-found-with-method' error.`); + } + + return `The route you're trying to unregister was not previously ` + `registered for the method type '${method}'.`; + }, + + 'unregister-route-route-not-registered': () => { + return `The route you're trying to unregister was not previously ` + `registered.`; + }, + + 'queue-replay-failed': ({ name, count }) => { + return `${count} requests failed, while trying to replay Queue: ${name}.`; + }, + + 'duplicate-queue-name': ({ name }) => { + return `The Queue name '${name}' is already being used. ` + `All instances of backgroundSync.Queue must be given unique names.`; + }, + + 'expired-test-without-max-age': ({ methodName, paramName }) => { + return `The '${methodName}()' method can only be used when the ` + `'${paramName}' is used in the constructor.`; + }, + + 'unsupported-route-type': ({ moduleName, className, funcName, paramName }) => { + return `The supplied '${paramName}' parameter was an unsupported type. ` + `Please check the docs for ${moduleName}.${className}.${funcName} for ` + `valid input types.`; + }, + + 'not-array-of-class': ({ value, expectedClass, + moduleName, className, funcName, paramName }) => { + return `The supplied '${paramName}' parameter must be an array of ` + `'${expectedClass}' objects. Received '${JSON.stringify(value)},'. ` + `Please check the call to ${moduleName}.${className}.${funcName}() ` + `to fix the issue.`; + }, + + 'max-entries-or-age-required': ({ moduleName, className, funcName }) => { + return `You must define either config.maxEntries or config.maxAgeSeconds` + `in ${moduleName}.${className}.${funcName}`; + }, + + 'statuses-or-headers-required': ({ moduleName, className, funcName }) => { + return `You must define either config.statuses or config.headers` + `in ${moduleName}.${className}.${funcName}`; + }, + + 'invalid-string': ({ moduleName, className, funcName, paramName }) => { + if (!paramName || !moduleName || !className || !funcName) { + throw new Error(`Unexpected input to 'invalid-string' error.`); + } + return `When using strings, the '${paramName}' parameter must start with ` + `'http' (for cross-origin matches) or '/' (for same-origin matches). ` + `Please see the docs for ${moduleName}.${className}.${funcName}() for ` + `more info.`; + }, + 'channel-name-required': () => { + return `You must provide a channelName to construct a ` + `BroadcastCacheUpdate instance.`; + }, + 'invalid-responses-are-same-args': () => { + return `The arguments passed into responsesAreSame() appear to be ` + `invalid. Please ensure valid Responses are used.`; + }, + 'expire-custom-caches-only': () => { + return `You must provide a 'cacheName' property when using the ` + `expiration plugin with a runtime caching strategy.`; + }, + 'unit-must-be-bytes': ({ normalizedRangeHeader }) => { + if (!normalizedRangeHeader) { + throw new Error(`Unexpected input to 'unit-must-be-bytes' error.`); + } + return `The 'unit' portion of the Range header must be set to 'bytes'. ` + `The Range header provided was "${normalizedRangeHeader}"`; + }, + 'single-range-only': ({ normalizedRangeHeader }) => { + if (!normalizedRangeHeader) { + throw new Error(`Unexpected input to 'single-range-only' error.`); + } + return `Multiple ranges are not supported. Please use a single start ` + `value, and optional end value. The Range header provided was ` + `"${normalizedRangeHeader}"`; + }, + 'invalid-range-values': ({ normalizedRangeHeader }) => { + if (!normalizedRangeHeader) { + throw new Error(`Unexpected input to 'invalid-range-values' error.`); + } + return `The Range header is missing both start and end values. At least ` + `one of those values is needed. The Range header provided was ` + `"${normalizedRangeHeader}"`; + }, + 'no-range-header': () => { + return `No Range header was found in the Request provided.`; + }, + 'range-not-satisfiable': ({ size, start, end }) => { + return `The start (${start}) and end (${end}) values in the Range are ` + `not satisfiable by the cached response, which is ${size} bytes.`; + }, + 'attempt-to-cache-non-get-request': ({ url, method }) => { + return `Unable to cache '${url}' because it is a '${method}' request and ` + `only 'GET' requests can be cached.`; + }, + 'cache-put-with-no-response': ({ url }) => { + return `There was an attempt to cache '${url}' but the response was not ` + `defined.`; + } + }; + + /* + Copyright 2017 Google Inc. + + Licensed under the Apache License, Version 2.0 (the "License"); + you may not use this file except in compliance with the License. + You may obtain a copy of the License at + + https://www.apache.org/licenses/LICENSE-2.0 + + Unless required by applicable law or agreed to in writing, software + distributed under the License is distributed on an "AS IS" BASIS, + WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + See the License for the specific language governing permissions and + limitations under the License. + */ + + const generatorFunction = (code, ...args) => { + const message = messages[code]; + if (!message) { + throw new Error(`Unable to find message for code '${code}'.`); + } + + return message(...args); + }; + + const exportedValue = generatorFunction; + + /* + Copyright 2017 Google Inc. + + Licensed under the Apache License, Version 2.0 (the "License"); + you may not use this file except in compliance with the License. + You may obtain a copy of the License at + + https://www.apache.org/licenses/LICENSE-2.0 + + Unless required by applicable law or agreed to in writing, software + distributed under the License is distributed on an "AS IS" BASIS, + WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + See the License for the specific language governing permissions and + limitations under the License. + */ + + /** + * Workbox errors should be thrown with this class. + * This allows use to ensure the type easily in tests, + * helps developers identify errors from workbox + * easily and allows use to optimise error + * messages correctly. + * + * @private + */ + class WorkboxError extends Error { + /** + * + * @param {string} errorCode The error code that + * identifies this particular error. + * @param {Object=} details Any relevant arguments + * that will help developers identify issues should + * be added as a key on the context object. + */ + constructor(errorCode, details) { + let message = exportedValue(errorCode, details); + + super(message); + + this.name = errorCode; + this.details = details; + } + } + + /* + Copyright 2017 Google Inc. + + Licensed under the Apache License, Version 2.0 (the "License"); + you may not use this file except in compliance with the License. + You may obtain a copy of the License at + + https://www.apache.org/licenses/LICENSE-2.0 + + Unless required by applicable law or agreed to in writing, software + distributed under the License is distributed on an "AS IS" BASIS, + WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + See the License for the specific language governing permissions and + limitations under the License. + */ + + /* + * This method returns true if the current context is a service worker. + */ + const isSwEnv = moduleName => { + if (!('ServiceWorkerGlobalScope' in self)) { + throw new WorkboxError('not-in-sw', { moduleName }); + } + }; + + /* + * This method throws if the supplied value is not an array. + * The destructed values are required to produce a meaningful error for users. + * The destructed and restructured object is so it's clear what is + * needed. + */ + const isArray = (value, { moduleName, className, funcName, paramName }) => { + if (!Array.isArray(value)) { + throw new WorkboxError('not-an-array', { + moduleName, + className, + funcName, + paramName + }); + } + }; + + const hasMethod = (object, expectedMethod, { moduleName, className, funcName, paramName }) => { + const type = typeof object[expectedMethod]; + if (type !== 'function') { + throw new WorkboxError('missing-a-method', { paramName, expectedMethod, + moduleName, className, funcName }); + } + }; + + const isType = (object, expectedType, { moduleName, className, funcName, paramName }) => { + if (typeof object !== expectedType) { + throw new WorkboxError('incorrect-type', { paramName, expectedType, + moduleName, className, funcName }); + } + }; + + const isInstance = (object, expectedClass, { moduleName, className, funcName, + paramName, isReturnValueProblem }) => { + if (!(object instanceof expectedClass)) { + throw new WorkboxError('incorrect-class', { paramName, expectedClass, + moduleName, className, funcName, isReturnValueProblem }); + } + }; + + const isOneOf = (value, validValues, { paramName }) => { + if (!validValues.includes(value)) { + throw new WorkboxError('invalid-value', { + paramName, + value, + validValueDescription: `Valid values are ${JSON.stringify(validValues)}.` + }); + } + }; + + const isArrayOfClass = (value, expectedClass, { moduleName, className, funcName, paramName }) => { + const error = new WorkboxError('not-array-of-class', { + value, expectedClass, + moduleName, className, funcName, paramName + }); + if (!Array.isArray(value)) { + throw error; + } + + for (let item of value) { + if (!(item instanceof expectedClass)) { + throw error; + } + } + }; + + const finalAssertExports = { + hasMethod, + isArray, + isInstance, + isOneOf, + isSwEnv, + isType, + isArrayOfClass + }; + + /** + * Runs all of the callback functions, one at a time sequentially, in the order + * in which they were registered. + * + * @memberof workbox.core + * @private + */ + let executeQuotaErrorCallbacks = (() => { + var _ref = babelHelpers.asyncToGenerator(function* () { + { + defaultExport.log(`About to run ${callbacks.size} callbacks to clean up caches.`); + } + + for (const callback of callbacks) { + yield callback(); + { + defaultExport.log(callback, 'is complete.'); + } + } + + { + defaultExport.log('Finished running callbacks.'); + } + }); + + return function executeQuotaErrorCallbacks() { + return _ref.apply(this, arguments); + }; + })(); + + const callbacks = new Set(); + + /** + * Adds a function to the set of callbacks that will be executed when there's + * a quota error. + * + * @param {Function} callback + * @memberof workbox.core + */ + function registerQuotaErrorCallback(callback) { + { + finalAssertExports.isType(callback, 'function', { + moduleName: 'workbox-core', + funcName: 'register', + paramName: 'callback' + }); + } + + callbacks.add(callback); + + { + defaultExport.log('Registered a callback to respond to quota errors.', callback); + } + } + + /* + Copyright 2017 Google Inc. + + Licensed under the Apache License, Version 2.0 (the "License"); + you may not use this file except in compliance with the License. + You may obtain a copy of the License at + + https://www.apache.org/licenses/LICENSE-2.0 + + Unless required by applicable law or agreed to in writing, software + distributed under the License is distributed on an "AS IS" BASIS, + WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + See the License for the specific language governing permissions and + limitations under the License. + */ + + /** + * A class that wraps common IndexedDB functionality in a promise-based API. + * It exposes all the underlying power and functionality of IndexedDB, but + * wraps the most commonly used features in a way that's much simpler to use. + * + * @private + */ + class DBWrapper { + /** + * @param {string} name + * @param {number} version + * @param {Object=} [callback] + * @param {function(this:DBWrapper, Event)} [callbacks.onupgradeneeded] + * @param {function(this:DBWrapper, Event)} [callbacks.onversionchange] + * Defaults to DBWrapper.prototype._onversionchange when not specified. + */ + constructor(name, version, { + onupgradeneeded, + onversionchange = this._onversionchange + } = {}) { + this._name = name; + this._version = version; + this._onupgradeneeded = onupgradeneeded; + this._onversionchange = onversionchange; + + // If this is null, it means the database isn't open. + this._db = null; + } + + /** + * Opens a connected to an IDBDatabase, invokes any onupgradedneeded + * callback, and added an onversionchange callback to the database. + * + * @return {IDBDatabase} + * + * @private + */ + open() { + var _this = this; + + return babelHelpers.asyncToGenerator(function* () { + if (_this._db) return; + + _this._db = yield new Promise(function (resolve, reject) { + // This flag is flipped to true if the timeout callback runs prior + // to the request failing or succeeding. Note: we use a timeout instead + // of an onblocked handler since there are cases where onblocked will + // never never run. A timeout better handles all possible scenarios: + // https://github.com/w3c/IndexedDB/issues/223 + let openRequestTimedOut = false; + setTimeout(function () { + openRequestTimedOut = true; + reject(new Error('The open request was blocked and timed out')); + }, _this.OPEN_TIMEOUT); + + const openRequest = indexedDB.open(_this._name, _this._version); + openRequest.onerror = function (evt) { + return reject(openRequest.error); + }; + openRequest.onupgradeneeded = function (evt) { + if (openRequestTimedOut) { + openRequest.transaction.abort(); + evt.target.result.close(); + } else if (_this._onupgradeneeded) { + _this._onupgradeneeded(evt); + } + }; + openRequest.onsuccess = function (evt) { + const db = evt.target.result; + if (openRequestTimedOut) { + db.close(); + } else { + db.onversionchange = _this._onversionchange; + resolve(db); + } + }; + }); + + return _this; + })(); + } + + /** + * Delegates to the native `get()` method for the object store. + * + * @param {string} storeName The name of the object store to put the value. + * @param {...*} args The values passed to the delegated method. + * @return {*} The key of the entry. + * + * @private + */ + get(storeName, ...args) { + var _this2 = this; + + return babelHelpers.asyncToGenerator(function* () { + return yield _this2._call('get', storeName, 'readonly', ...args); + })(); + } + + /** + * Delegates to the native `add()` method for the object store. + * + * @param {string} storeName The name of the object store to put the value. + * @param {...*} args The values passed to the delegated method. + * @return {*} The key of the entry. + * + * @private + */ + add(storeName, ...args) { + var _this3 = this; + + return babelHelpers.asyncToGenerator(function* () { + return yield _this3._call('add', storeName, 'readwrite', ...args); + })(); + } + + /** + * Delegates to the native `put()` method for the object store. + * + * @param {string} storeName The name of the object store to put the value. + * @param {...*} args The values passed to the delegated method. + * @return {*} The key of the entry. + * + * @private + */ + put(storeName, ...args) { + var _this4 = this; + + return babelHelpers.asyncToGenerator(function* () { + return yield _this4._call('put', storeName, 'readwrite', ...args); + })(); + } + + /** + * Delegates to the native `delete()` method for the object store. + * + * @param {string} storeName + * @param {...*} args The values passed to the delegated method. + * + * @private + */ + delete(storeName, ...args) { + var _this5 = this; + + return babelHelpers.asyncToGenerator(function* () { + yield _this5._call('delete', storeName, 'readwrite', ...args); + })(); + } + + /** + * Deletes the underlying database, ensuring that any open connections are + * closed first. + * + * @private + */ + deleteDatabase() { + var _this6 = this; + + return babelHelpers.asyncToGenerator(function* () { + _this6.close(); + _this6._db = null; + yield new Promise(function (resolve, reject) { + const request = indexedDB.deleteDatabase(_this6._name); + request.onerror = function (evt) { + return reject(evt.target.error); + }; + request.onblocked = function () { + return reject(new Error('Deletion was blocked.')); + }; + request.onsuccess = function () { + return resolve(); + }; + }); + })(); + } + + /** + * Delegates to the native `getAll()` or polyfills it via the `find()` + * method in older browsers. + * + * @param {string} storeName + * @param {*} query + * @param {number} count + * @return {Array} + * + * @private + */ + getAll(storeName, query, count) { + var _this7 = this; + + return babelHelpers.asyncToGenerator(function* () { + if ('getAll' in IDBObjectStore.prototype) { + return yield _this7._call('getAll', storeName, 'readonly', query, count); + } else { + return yield _this7.getAllMatching(storeName, { query, count }); + } + })(); + } + + /** + * Supports flexible lookup in an object store by specifying an index, + * query, direction, and count. This method returns an array of objects + * with the signature . + * + * @param {string} storeName + * @param {Object} [opts] + * @param {IDBCursorDirection} [opts.direction] + * @param {*} [opts.query] + * @param {string} [opts.index] The index to use (if specified). + * @param {number} [opts.count] The max number of results to return. + * @param {boolean} [opts.includeKeys] When true, the structure of the + * returned objects is changed from an array of values to an array of + * objects in the form {key, primaryKey, value}. + * @return {Array} + * + * @private + */ + getAllMatching(storeName, opts = {}) { + var _this8 = this; + + return babelHelpers.asyncToGenerator(function* () { + return yield _this8.transaction([storeName], 'readonly', function (stores, done) { + const store = stores[storeName]; + const target = opts.index ? store.index(opts.index) : store; + const results = []; + + // Passing `undefined` arguments to Edge's `openCursor(...)` causes + // 'DOMException: DataError' + // Details in issue: https://github.com/GoogleChrome/workbox/issues/1509 + const query = opts.query || null; + const direction = opts.direction || 'next'; + target.openCursor(query, direction).onsuccess = function (evt) { + const cursor = evt.target.result; + if (cursor) { + const { primaryKey, key, value } = cursor; + results.push(opts.includeKeys ? { primaryKey, key, value } : value); + if (opts.count && results.length >= opts.count) { + done(results); + } else { + cursor.continue(); + } + } else { + done(results); + } + }; + }); + })(); + } + + /** + * Accepts a list of stores, a transaction type, and a callback and + * performs a transaction. A promise is returned that resolves to whatever + * value the callback chooses. The callback holds all the transaction logic + * and is invoked with three arguments: + * 1. An object mapping object store names to IDBObjectStore values. + * 2. A `done` function, that's used to resolve the promise when + * when the transaction is done. + * 3. An `abort` function that can be called to abort the transaction + * at any time. + * + * @param {Array} storeNames An array of object store names + * involved in the transaction. + * @param {string} type Can be `readonly` or `readwrite`. + * @param {function(Object, function(), function(*)):?IDBRequest} callback + * @return {*} The result of the transaction ran by the callback. + * + * @private + */ + transaction(storeNames, type, callback) { + var _this9 = this; + + return babelHelpers.asyncToGenerator(function* () { + yield _this9.open(); + const result = yield new Promise(function (resolve, reject) { + const txn = _this9._db.transaction(storeNames, type); + const done = function (value) { + return resolve(value); + }; + const abort = function () { + reject(new Error('The transaction was manually aborted')); + txn.abort(); + }; + txn.onerror = function (evt) { + return reject(evt.target.error); + }; + txn.onabort = function (evt) { + return reject(evt.target.error); + }; + txn.oncomplete = function () { + return resolve(); + }; + + const stores = {}; + for (const storeName of storeNames) { + stores[storeName] = txn.objectStore(storeName); + } + callback(stores, done, abort); + }); + return result; + })(); + } + + /** + * Delegates async to a native IDBObjectStore method. + * + * @param {string} method The method name. + * @param {string} storeName The object store name. + * @param {string} type Can be `readonly` or `readwrite`. + * @param {...*} args The list of args to pass to the native method. + * @return {*} The result of the transaction. + * + * @private + */ + _call(method, storeName, type, ...args) { + var _this10 = this; + + return babelHelpers.asyncToGenerator(function* () { + yield _this10.open(); + const callback = function (stores, done) { + stores[storeName][method](...args).onsuccess = function (evt) { + done(evt.target.result); + }; + }; + + return yield _this10.transaction([storeName], type, callback); + })(); + } + + /** + * The default onversionchange handler, which closes the database so other + * connections can open without being blocked. + * + * @param {Event} evt + * + * @private + */ + _onversionchange(evt) { + this.close(); + } + + /** + * Closes the connection opened by `DBWrapper.open()`. Generally this method + * doesn't need to be called since: + * 1. It's usually better to keep a connection open since opening + * a new connection is somewhat slow. + * 2. Connections are automatically closed when the reference is + * garbage collected. + * The primary use case for needing to close a connection is when another + * reference (typically in another tab) needs to upgrade it and would be + * blocked by the current, open connection. + * + * @private + */ + close() { + if (this._db) this._db.close(); + } + } + + // Exposed to let users modify the default timeout on a per-instance + // or global basis. + DBWrapper.prototype.OPEN_TIMEOUT = 2000; + + /* + Copyright 2017 Google Inc. + + Licensed under the Apache License, Version 2.0 (the "License"); + you may not use this file except in compliance with the License. + You may obtain a copy of the License at + + https://www.apache.org/licenses/LICENSE-2.0 + + Unless required by applicable law or agreed to in writing, software + distributed under the License is distributed on an "AS IS" BASIS, + WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + See the License for the specific language governing permissions and + limitations under the License. + */ + + const _cacheNameDetails = { + prefix: 'workbox', + suffix: self.registration.scope, + googleAnalytics: 'googleAnalytics', + precache: 'precache', + runtime: 'runtime' + }; + + const _createCacheName = cacheName => { + return [_cacheNameDetails.prefix, cacheName, _cacheNameDetails.suffix].filter(value => value.length > 0).join('-'); + }; + + const cacheNames = { + updateDetails: details => { + Object.keys(_cacheNameDetails).forEach(key => { + if (typeof details[key] !== 'undefined') { + _cacheNameDetails[key] = details[key]; + } + }); + }, + getGoogleAnalyticsName: userCacheName => { + return userCacheName || _createCacheName(_cacheNameDetails.googleAnalytics); + }, + getPrecacheName: userCacheName => { + return userCacheName || _createCacheName(_cacheNameDetails.precache); + }, + getRuntimeName: userCacheName => { + return userCacheName || _createCacheName(_cacheNameDetails.runtime); + } + }; + + /* + Copyright 2017 Google Inc. + + Licensed under the Apache License, Version 2.0 (the "License"); + you may not use this file except in compliance with the License. + You may obtain a copy of the License at + + https://www.apache.org/licenses/LICENSE-2.0 + + Unless required by applicable law or agreed to in writing, software + distributed under the License is distributed on an "AS IS" BASIS, + WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + See the License for the specific language governing permissions and + limitations under the License. + */ + + var pluginEvents = { + CACHE_DID_UPDATE: 'cacheDidUpdate', + CACHE_WILL_UPDATE: 'cacheWillUpdate', + CACHED_RESPONSE_WILL_BE_USED: 'cachedResponseWillBeUsed', + FETCH_DID_FAIL: 'fetchDidFail', + REQUEST_WILL_FETCH: 'requestWillFetch' + }; + + /* + Copyright 2017 Google Inc. + + Licensed under the Apache License, Version 2.0 (the "License"); + you may not use this file except in compliance with the License. + You may obtain a copy of the License at + + https://www.apache.org/licenses/LICENSE-2.0 + + Unless required by applicable law or agreed to in writing, software + distributed under the License is distributed on an "AS IS" BASIS, + WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + See the License for the specific language governing permissions and + limitations under the License. + */ + + var pluginUtils = { + filter: (plugins, callbackname) => { + return plugins.filter(plugin => callbackname in plugin); + } + }; + + /* + Copyright 2017 Google Inc. + + Licensed under the Apache License, Version 2.0 (the "License"); + you may not use this file except in compliance with the License. + You may obtain a copy of the License at + + https://www.apache.org/licenses/LICENSE-2.0 + + Unless required by applicable law or agreed to in writing, software + distributed under the License is distributed on an "AS IS" BASIS, + WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + See the License for the specific language governing permissions and + limitations under the License. + */ + + const getFriendlyURL = url => { + const urlObj = new URL(url, location); + if (urlObj.origin === location.origin) { + return urlObj.pathname; + } + return urlObj.href; + }; + + /* + Copyright 2017 Google Inc. + + Licensed under the Apache License, Version 2.0 (the "License"); + you may not use this file except in compliance with the License. + You may obtain a copy of the License at + + https://www.apache.org/licenses/LICENSE-2.0 + + Unless required by applicable law or agreed to in writing, software + distributed under the License is distributed on an "AS IS" BASIS, + WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + See the License for the specific language governing permissions and + limitations under the License. + */ + + /** + * Wrapper around cache.put(). + * + * Will call `cacheDidUpdate` on plugins if the cache was updated. + * + * @param {Object} options + * @param {string} options.cacheName + * @param {Request} options.request + * @param {Response} options.response + * @param {Event} [options.event] + * @param {Array

Not Found

Not Found

call 的模拟实现

apply 的模拟实现

bind 的模拟实现

new

节流 throttle

防抖 debounce

Promise

浅拷贝

深拷贝

- Gatsby's blog starter -

Not Found

if Else

三目运算符（Ternary Operation）

逻辑与（&&）运算符

Switch Case 操作符

枚举（enums）

嵌套条件渲染

高阶组件（HOC）

参考

node_modules

npm 5.x 安装组织 node_modules

依赖包

依赖包的分类

依赖包的版本号

依赖包的版本管理

npm scripts 脚本

基本原理

传参

通配符

多命令运行

串行执行

并行执行

env 环境变量

指令钩子

npm 配置项

优先级

npm config 指令

npm 工程管理

项目版本号管理

域级包管理

域级包的发布

其它

模块全局化

依赖锁定

参考

基本概念

容器属性

项目属性

基本概念

网格容器

显式网格

间距

容器内项目对齐

justify-items

align-items

网格项目

通过参考特定的网格线来确定网格项目在网格中的位置。

项目对齐

justify-self

align-self

增加 fallback support

兼容性

@supports

not 操作符

and 操作符

or 操作符

参考

CSS 中的 @media

JavaScript 中的 matchMedia()

监听媒体查询状态变化

“过时”的方法

call 的模拟实现

apply 的模拟实现

bind 的模拟实现

new

节流 throttle

防抖 debounce

Promise

CSS 中的 `@media`

JavaScript 中的 `matchMedia()`