spritzr/src/Polyfill.js

Provides an inheritance/traits/talents library

if (!Function.prototype.bind) {
	Function.prototype.bind = function(oThis) {
		if (typeof this !== "function") {
			// closest thing possible to the ECMAScript 5
			// internal IsCallable function
			throw new TypeError(
					"Function.prototype.bind - what is trying to be bound is not callable");
		}

		var aArgs = Array.prototype.slice.call(arguments, 1), fToBind = this, fNOP = function() {
		}, fBound = function() {
			return fToBind.apply(this instanceof fNOP && oThis ? this : oThis,
					aArgs.concat(Array.prototype.slice.call(arguments)));
		};

		fNOP.prototype = this.prototype;
		fBound.prototype = new fNOP();

		return fBound;
	};
}

if (!Array.prototype.indexOf) {
	Array.prototype.indexOf = function(searchElement, fromIndex) {
		if (this === undefined || this === null) {
			throw new TypeError('"this" is null or not defined');
		}

		var length = this.length >>> 0; // Hack to convert object.length to a
										// UInt32

		fromIndex = +fromIndex || 0;

		if (Math.abs(fromIndex) === Infinity) {
			fromIndex = 0;
		}

		if (fromIndex < 0) {
			fromIndex += length;
			if (fromIndex < 0) {
				fromIndex = 0;
			}
		}

		for (; fromIndex < length; fromIndex++) {
			if (this[fromIndex] === searchElement) {
				return fromIndex;
			}
		}

		return -1;
	};
}