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chicoxyzzyTheLarkInn
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TheLarkInn
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refactor(es6): Upgrade CachePlugin to es6 (webpack#3680)
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Lines changed: 65 additions & 62 deletions

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‎lib/CachePlugin.js‎

Lines changed: 65 additions & 62 deletions
Original file line numberDiff line numberDiff line change
@@ -2,75 +2,78 @@
22
MIT License http://www.opensource.org/licenses/mit-license.php
33
Author Tobias Koppers @sokra
44
*/
5-
var async = require("async");
5+
"use strict";
66

7-
function CachePlugin(cache) {
8-
this.cache = cache || {};
9-
this.FS_ACCURENCY = 2000;
10-
}
11-
module.exports = CachePlugin;
7+
const async = require("async");
128

13-
CachePlugin.prototype.apply = function(compiler) {
14-
if(Array.isArray(compiler.compilers)) {
15-
compiler.compilers.forEach(function(c, idx) {
16-
c.apply(new CachePlugin(this.cache[idx] = this.cache[idx] || {}));
17-
}, this);
18-
} else {
19-
var _this = this;
20-
compiler.plugin("compilation", function(compilation) {
21-
if(!compilation.notCacheable) {
22-
compilation.cache = _this.cache;
23-
} else if(_this.watching) {
24-
compilation.warnings.push(
25-
new Error("CachePlugin - Cache cannot be used because of: " + compilation.notCacheable)
26-
);
27-
}
28-
});
29-
compiler.plugin("watch-run", function(compiler, callback) {
30-
_this.watching = true;
31-
callback();
32-
});
33-
compiler.plugin("run", function(compiler, callback) {
34-
if(!compiler._lastCompilationFileDependencies) return callback();
35-
var fs = compiler.inputFileSystem;
36-
var fileTs = compiler.fileTimestamps = {};
37-
async.forEach(compiler._lastCompilationFileDependencies, function(file, callback) {
38-
fs.stat(file, function(err, stat) {
39-
if(err) {
40-
if(err.code === "ENOENT") return callback();
41-
return callback(err);
42-
}
9+
class CachePlugin {
10+
constructor(cache) {
11+
this.cache = cache || {};
12+
this.FS_ACCURENCY = 2000;
13+
}
4314

44-
if(stat.mtime)
45-
_this.applyMtime(+stat.mtime);
15+
apply(compiler) {
16+
if(Array.isArray(compiler.compilers)) {
17+
compiler.compilers.forEach((c, idx) => {
18+
c.apply(new CachePlugin(this.cache[idx] = this.cache[idx] || {}));
19+
});
20+
} else {
21+
compiler.plugin("compilation", compilation => {
22+
if(!compilation.notCacheable) {
23+
compilation.cache = this.cache;
24+
} else if(this.watching) {
25+
compilation.warnings.push(
26+
new Error(`CachePlugin - Cache cannot be used because of: ${compilation.notCacheable}`)
27+
);
28+
}
29+
});
30+
compiler.plugin("watch-run", (compiler, callback) => {
31+
this.watching = true;
32+
callback();
33+
});
34+
compiler.plugin("run", (compiler, callback) => {
35+
if(!compiler._lastCompilationFileDependencies) return callback();
36+
const fs = compiler.inputFileSystem;
37+
const fileTs = compiler.fileTimestamps = {};
38+
async.forEach(compiler._lastCompilationFileDependencies, (file, callback) => {
39+
fs.stat(file, (err, stat) => {
40+
if(err) {
41+
if(err.code === "ENOENT") return callback();
42+
return callback(err);
43+
}
4644

47-
fileTs[file] = +stat.mtime || Infinity;
45+
if(stat.mtime)
46+
this.applyMtime(+stat.mtime);
47+
48+
fileTs[file] = +stat.mtime || Infinity;
49+
callback();
50+
});
51+
}, err => {
52+
if(err) return callback(err);
53+
Object.keys(fileTs).forEach(key => {
54+
fileTs[key] += this.FS_ACCURENCY;
55+
});
4856
callback();
4957
});
50-
}, function(err) {
51-
if(err) return callback(err);
52-
Object.keys(fileTs).forEach(function(key) {
53-
fileTs[key] += _this.FS_ACCURENCY;
54-
});
58+
});
59+
compiler.plugin("after-compile", function(compilation, callback) {
60+
compilation.compiler._lastCompilationFileDependencies = compilation.fileDependencies;
61+
compilation.compiler._lastCompilationContextDependencies = compilation.contextDependencies;
5562
callback();
5663
});
57-
});
58-
compiler.plugin("after-compile", function(compilation, callback) {
59-
compilation.compiler._lastCompilationFileDependencies = compilation.fileDependencies;
60-
compilation.compiler._lastCompilationContextDependencies = compilation.contextDependencies;
61-
callback();
62-
});
64+
}
6365
}
64-
};
6566

66-
/* istanbul ignore next */
67-
CachePlugin.prototype.applyMtime = function applyMtime(mtime) {
68-
if(this.FS_ACCURENCY > 1 && mtime % 2 !== 0)
69-
this.FS_ACCURENCY = 1;
70-
else if(this.FS_ACCURENCY > 10 && mtime % 20 !== 0)
71-
this.FS_ACCURENCY = 10;
72-
else if(this.FS_ACCURENCY > 100 && mtime % 200 !== 0)
73-
this.FS_ACCURENCY = 100;
74-
else if(this.FS_ACCURENCY > 1000 && mtime % 2000 !== 0)
75-
this.FS_ACCURENCY = 1000;
76-
};
67+
/* istanbul ignore next */
68+
applyMtime(mtime) {
69+
if(this.FS_ACCURENCY > 1 && mtime % 2 !== 0)
70+
this.FS_ACCURENCY = 1;
71+
else if(this.FS_ACCURENCY > 10 && mtime % 20 !== 0)
72+
this.FS_ACCURENCY = 10;
73+
else if(this.FS_ACCURENCY > 100 && mtime % 200 !== 0)
74+
this.FS_ACCURENCY = 100;
75+
else if(this.FS_ACCURENCY > 1000 && mtime % 2000 !== 0)
76+
this.FS_ACCURENCY = 1000;
77+
}
78+
}
79+
module.exports = CachePlugin;

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