Move polyfills to separate, optional file.

Author: Eric Wendelin

error-stack-parser.js

@@ -11,55 +11,6 @@
 }(this, function ErrorStackParser(StackFrame) {
     'use strict';
 
-    // ES5 Polyfills
-    // See https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Array/map
-    if (!Array.prototype.map) {
-        Array.prototype.map = function(callback, thisArg) {
-            var O = Object(this);
-            var len = O.length >>> 0;
-            var T;
-            if (arguments.length > 1) {
-                T = thisArg;
-            }
-
-            var A = new Array(len);
-            var k = 0;
-
-            while (k < len) {
-                var kValue, mappedValue;
-                if (k in O) {
-                    kValue = O[k];
-                    mappedValue = callback.call(T, kValue, k, O);
-                    A[k] = mappedValue;
-                }
-                k++;
-            }
-
-            return A;
-        };
-    }
-
-    // See https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Array/filter
-    if (!Array.prototype.filter) {
-        Array.prototype.filter = function(callback/*, thisArg*/) {
-            var t = Object(this);
-            var len = t.length >>> 0;
-
-            var res = [];
-            var thisArg = arguments.length >= 2 ? arguments[1] : void 0;
-            for (var i = 0; i < len; i++) {
-                if (i in t) {
-                    var val = t[i];
-                    if (callback.call(thisArg, val, i, t)) {
-                        res.push(val);
-                    }
-                }
-            }
-
-            return res;
-        };
-    }
-
     var FIREFOX_SAFARI_STACK_REGEXP = /\S+\:\d+/;
     var CHROME_IE_STACK_REGEXP = /\s+at /;