"use strict";

//------------------------------------------------------------------------------

// Proxying

// Hooking into runtime-level object meta-operations.

// http://es6-features.org/#Proxying

//------------------------------------------------------------------------------

let target = {

foo: "Welcome, foo"

}

let proxy = new Proxy(target, {

get (receiver, name) {

return name in receiver ? receiver[name] : `Hello, ${name}`

}

})

proxy.foo === "Welcome, foo"

proxy.world === "Hello, world"

//------------------------------------------------------------------------------

// Reflection

// Make calls corresponding to the object meta-operations.

// http://es6-features.org/#Reflection

//------------------------------------------------------------------------------

let obj = { a: 1 }

Object.defineProperty(obj, "b", { value: 2 })

obj[Symbol("c")] = 3

Reflect.ownKeys(obj) // [ "a", "b", Symbol(c) ]