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Replace old shim with current from mozilla #15

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Replace old shim with current from mozilla #15

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34 changes: 18 additions & 16 deletions Array/every.js
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Original file line number Diff line number Diff line change
@@ -1,12 +1,10 @@
/*
https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Array/every
*/
if (!Array.prototype.every) {
Array.prototype.every = function(callback, thisArg) {
Array.prototype.every = function(callbackfn, thisArg) {
'use strict';
var T, k;

if (this === void 0 || this === null) {
throw new TypeError('Array.prototype.every called on null or undefined');
if (this == null) {
throw new TypeError('this is null or not defined');
}

// 1. Let O be the result of calling ToObject passing the this
Expand All @@ -18,13 +16,15 @@ if (!Array.prototype.every) {
// 3. Let len be ToUint32(lenValue).
var len = O.length >>> 0;

// 4. If IsCallable(callback) is false, throw a TypeError exception.
if (callback.__class__ !== 'Function') {
throw new TypeError(callback + ' is not a function');
// 4. If IsCallable(callbackfn) is false, throw a TypeError exception.
if (typeof callbackfn !== 'function' && Object.prototype.toString.call(callbackfn) !== '[object Function]') {
throw new TypeError();
}

// 5. If thisArg was supplied, let T be thisArg; else let T be undefined.
T = (arguments.length > 1) ? thisArg : void 0;
if (arguments.length > 1) {
T = thisArg;
}

// 6. Let k be 0.
k = 0;
Expand All @@ -41,15 +41,17 @@ if (!Array.prototype.every) {
// This step can be combined with c
// c. If kPresent is true, then
if (k in O) {

var testResult;
// i. Let kValue be the result of calling the Get internal method
// of O with argument Pk.
kValue = O[k];

// ii. Let testResult be the result of calling the Call internal method
// of callback with T as the this value and argument list
// containing kValue, k, and O.
var testResult = callback.call(T, kValue, k, O);
// ii. Let testResult be the result of calling the Call internal method
// of callbackfn with T as the this value if T is not undefined
// else is the result of calling callbackfn
// and argument list containing kValue, k, and O.
if(T) testResult = callbackfn.call(T, kValue, k, O);
else testResult = callbackfn(kValue,k,O)

// iii. If ToBoolean(testResult) is false, return false.
if (!testResult) {
Expand All @@ -60,4 +62,4 @@ if (!Array.prototype.every) {
}
return true;
};
}
}