36 lines
1.1 KiB
JavaScript
36 lines
1.1 KiB
JavaScript
(function() {
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var Ap = Array.prototype;
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var slice = Ap.slice;
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var Fp = Function.prototype;
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if (!Fp.bind) {
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// PhantomJS doesn't support Function.prototype.bind natively, so
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// polyfill it whenever this module is required.
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Fp.bind = function(context) {
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var func = this;
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var args = slice.call(arguments, 1);
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function bound() {
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var invokedAsConstructor = func.prototype && (this instanceof func);
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return func.apply(
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// Ignore the context parameter when invoking the bound function
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// as a constructor. Note that this includes not only constructor
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// invocations using the new keyword but also calls to base class
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// constructors such as BaseClass.call(this, ...) or super(...).
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!invokedAsConstructor && context || this,
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args.concat(slice.call(arguments))
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);
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}
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// The bound function must share the .prototype of the unbound
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// function so that any object created by one constructor will count
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// as an instance of both constructors.
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bound.prototype = func.prototype;
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return bound;
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};
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}
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})();
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