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41 lines
1.2 KiB
JavaScript
41 lines
1.2 KiB
JavaScript
// This is a less perfect implementation of the inherits function,
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// designed to work in cases where ES5 is not available.
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//
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// Note that it is a bit longer, and doesn't properly deal with
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// getter/setters or property descriptor flags (enumerable, etc.)
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module.exports = inheritsOld
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function inheritsOld (c, p, proto) {
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function F () { this.constructor = c }
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F.prototype = p.prototype
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var e = {}
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for (var i in c.prototype) if (c.prototype.hasOwnProperty(i)) {
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e[i] = c.prototype[i]
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}
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if (proto) for (var i in proto) if (proto.hasOwnProperty(i)) {
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e[i] = proto[i]
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}
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c.prototype = new F()
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for (var i in e) if (e.hasOwnProperty(i)) {
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c.prototype[i] = e[i]
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}
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c.super = p
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}
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// function Child () {
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// Child.super.call(this)
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// console.error([this
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// ,this.constructor
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// ,this.constructor === Child
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// ,this.constructor.super === Parent
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// ,Object.getPrototypeOf(this) === Child.prototype
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// ,Object.getPrototypeOf(Object.getPrototypeOf(this))
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// === Parent.prototype
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// ,this instanceof Child
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// ,this instanceof Parent])
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// }
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// function Parent () {}
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// inheritsOld(Child, Parent)
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// new Child
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