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Edit File: shims.js

/* eslint-disable */
/* jscs: disable */
'use strict';

// pulled specific shims from https://github.com/es-shims/es5-shim

var ArrayPrototype = Array.prototype;
var ObjectPrototype = Object.prototype;
var FunctionPrototype = Function.prototype;
var StringPrototype = String.prototype;
var array_slice = ArrayPrototype.slice;

// Define configurable, writable and non-enumerable props
// if they don't exist.
var defineProperty;
if (supportsDescriptors) {
    defineProperty = function (object, name, method, forceAssign) {
        if (!forceAssign && (name in object)) { return; }
        Object.defineProperty(object, name, {
            configurable: true,
            enumerable: false,
            writable: true,
            value: method
        });
    };
} else {
    defineProperty = function (object, name, method, forceAssign) {
        if (!forceAssign && (name in object)) { return; }
        object[name] = method;
    };
}
var defineProperties = function (object, map, forceAssign) {
    for (var name in map) {
        if (ObjectPrototype.hasOwnProperty.call(map, name)) {
          defineProperty(object, name, map[name], forceAssign);
        }
    }
};

var toObject = function (o) {
    if (o == null) { // this matches both null and undefined
        throw new TypeError("can't convert " + o + ' to object');
    }
    return Object(o);
};

//
// Util
// ======
//

// ES5 9.4
// http://es5.github.com/#x9.4
// http://jsperf.com/to-integer

function ToUint32(x) {
    return x >>> 0;
}

//
// Function
// ========
//

// ES-5 15.3.4.5
// http://es5.github.com/#x15.3.4.5

function Empty() {}

defineProperties(FunctionPrototype, {
    bind: function bind(that) { // .length is 1
        // 1. Let Target be the this value.
        var target = this;
        // 2. If IsCallable(Target) is false, throw a TypeError exception.
        if (!isFunction(target)) {
            throw new TypeError('Function.prototype.bind called on incompatible ' + target);
        }
        // 3. Let A be a new (possibly empty) internal list of all of the
        //   argument values provided after thisArg (arg1, arg2 etc), in order.
        // XXX slicedArgs will stand in for "A" if used
        var args = array_slice.call(arguments, 1); // for normal call
        // 4. Let F be a new native ECMAScript object.
        // 11. Set the [[Prototype]] internal property of F to the standard
        //   built-in Function prototype object as specified in 15.3.3.1.
        // 12. Set the [[Call]] internal property of F as described in
        //   15.3.4.5.1.
        // 13. Set the [[Construct]] internal property of F as described in
        //   15.3.4.5.2.
        // 14. Set the [[HasInstance]] internal property of F as described in
        //   15.3.4.5.3.
        var binder = function () {

if (this instanceof bound) {
                // 15.3.4.5.2 [[Construct]]
                // When the [[Construct]] internal method of a function object,
                // F that was created using the bind function is called with a
                // list of arguments ExtraArgs, the following steps are taken:
                // 1. Let target be the value of F's [[TargetFunction]]
                //   internal property.
                // 2. If target has no [[Construct]] internal method, a
                //   TypeError exception is thrown.
                // 3. Let boundArgs be the value of F's [[BoundArgs]] internal
                //   property.
                // 4. Let args be a new list containing the same values as the
                //   list boundArgs in the same order followed by the same
                //   values as the list ExtraArgs in the same order.
                // 5. Return the result of calling the [[Construct]] internal
                //   method of target providing args as the arguments.

var result = target.apply(
                    this,
                    args.concat(array_slice.call(arguments))
                );
                if (Object(result) === result) {
                    return result;
                }
                return this;

} else {
                // 15.3.4.5.1 [[Call]]
                // When the [[Call]] internal method of a function object, F,
                // which was created using the bind function is called with a
                // this value and a list of arguments ExtraArgs, the following
                // steps are taken:
                // 1. Let boundArgs be the value of F's [[BoundArgs]] internal
                //   property.
                // 2. Let boundThis be the value of F's [[BoundThis]] internal
                //   property.
                // 3. Let target be the value of F's [[TargetFunction]] internal
                //   property.
                // 4. Let args be a new list containing the same values as the
                //   list boundArgs in the same order followed by the same
                //   values as the list ExtraArgs in the same order.
                // 5. Return the result of calling the [[Call]] internal method
                //   of target providing boundThis as the this value and
                //   providing args as the arguments.

// equiv: target.call(this, ...boundArgs, ...args)
                return target.apply(
                    that,
                    args.concat(array_slice.call(arguments))
                );

}

};

// 15. If the [[Class]] internal property of Target is "Function", then
        //     a. Let L be the length property of Target minus the length of A.
        //     b. Set the length own property of F to either 0 or L, whichever is
        //       larger.
        // 16. Else set the length own property of F to 0.

var boundLength = Math.max(0, target.length - args.length);

// 17. Set the attributes of the length own property of F to the values
        //   specified in 15.3.5.1.
        var boundArgs = [];
        for (var i = 0; i < boundLength; i++) {
            boundArgs.push('$' + i);
        }

// XXX Build a dynamic function with desired amount of arguments is the only
        // way to set the length property of a function.
        // In environments where Content Security Policies enabled (Chrome extensions,
        // for ex.) all use of eval or Function costructor throws an exception.
        // However in all of these environments Function.prototype.bind exists
        // and so this code will never be executed.
        var bound = Function('binder', 'return function (' + boundArgs.join(',') + '){ return binder.apply(this, arguments); }')(binder);

if (target.prototype) {
            Empty.prototype = target.prototype;
            bound.prototype = new Empty();
            // Clean up dangling references.
            Empty.prototype = null;
        }

// TODO
        // 18. Set the [[Extensible]] internal property of F to true.

// TODO
        // 19. Let thrower be the [[ThrowTypeError]] function Object (13.2.3).
        // 20. Call the [[DefineOwnProperty]] internal method of F with
        //   arguments "caller", PropertyDescriptor {[[Get]]: thrower, [[Set]]:
        //   thrower, [[Enumerable]]: false, [[Configurable]]: false}, and
        //   false.
        // 21. Call the [[DefineOwnProperty]] internal method of F with
        //   arguments "arguments", PropertyDescriptor {[[Get]]: thrower,
        //   [[Set]]: thrower, [[Enumerable]]: false, [[Configurable]]: false},
        //   and false.

// TODO
        // NOTE Function objects created using Function.prototype.bind do not
        // have a prototype property or the [[Code]], [[FormalParameters]], and
        // [[Scope]] internal properties.
        // XXX can't delete prototype in pure-js.

// 22. Return F.
        return bound;
    }
});

//
// Array
// =====
//

// ES5 15.4.3.2
// http://es5.github.com/#x15.4.3.2
// https://developer.mozilla.org/en/JavaScript/Reference/Global_Objects/Array/isArray
defineProperties(Array, { isArray: isArray });

var boxedString = Object('a');
var splitString = boxedString[0] !== 'a' || !(0 in boxedString);

var properlyBoxesContext = function properlyBoxed(method) {
    // Check node 0.6.21 bug where third parameter is not boxed
    var properlyBoxesNonStrict = true;
    var properlyBoxesStrict = true;
    if (method) {
        method.call('foo', function (_, __, context) {
            if (typeof context !== 'object') { properlyBoxesNonStrict = false; }
        });

method.call([1], function () {
            'use strict';
            properlyBoxesStrict = typeof this === 'string';
        }, 'x');
    }
    return !!method && properlyBoxesNonStrict && properlyBoxesStrict;
};

defineProperties(ArrayPrototype, {
    forEach: function forEach(fun /*, thisp*/) {
        var object = toObject(this),
            self = splitString && isString(this) ? this.split('') : object,
            thisp = arguments[1],
            i = -1,
            length = self.length >>> 0;

// If no callback function or if callback is not a callable function
        if (!isFunction(fun)) {
            throw new TypeError(); // TODO message
        }

while (++i < length) {
            if (i in self) {
                // Invoke the callback function with call, passing arguments:
                // context, property value, property key, thisArg object
                // context
                fun.call(thisp, self[i], i, object);
            }
        }
    }
}, !properlyBoxesContext(ArrayPrototype.forEach));

// ES5 15.4.4.14
// http://es5.github.com/#x15.4.4.14
// https://developer.mozilla.org/en/JavaScript/Reference/Global_Objects/Array/indexOf
var hasFirefox2IndexOfBug = Array.prototype.indexOf && [0, 1].indexOf(1, 2) !== -1;
defineProperties(ArrayPrototype, {
    indexOf: function indexOf(sought /*, fromIndex */ ) {
        var self = splitString && isString(this) ? this.split('') : toObject(this),
            length = self.length >>> 0;

if (!length) {
            return -1;
        }

var i = 0;
        if (arguments.length > 1) {
            i = toInteger(arguments[1]);
        }

// handle negative indices
        i = i >= 0 ? i : Math.max(0, length + i);
        for (; i < length; i++) {
            if (i in self && self[i] === sought) {
                return i;
            }
        }
        return -1;
    }
}, hasFirefox2IndexOfBug);

//
// String
// ======
//

// ES5 15.5.4.14
// http://es5.github.com/#x15.5.4.14

// [bugfix, IE lt 9, firefox 4, Konqueror, Opera, obscure browsers]
// Many browsers do not split properly with regular expressions or they
// do not perform the split correctly under obscure conditions.
// See http://blog.stevenlevithan.com/archives/cross-browser-split
// I've tested in many browsers and this seems to cover the deviant ones:
//    'ab'.split(/(?:ab)*/) should be ["", ""], not [""]
//    '.'.split(/(.?)(.?)/) should be ["", ".", "", ""], not ["", ""]
//    'tesst'.split(/(s)*/) should be ["t", undefined, "e", "s", "t"], not
//       [undefined, "t", undefined, "e", ...]
//    ''.split(/.?/) should be [], not [""]
//    '.'.split(/()()/) should be ["."], not ["", "", "."]

var string_split = StringPrototype.split;
if (
    'ab'.split(/(?:ab)*/).length !== 2 ||
    '.'.split(/(.?)(.?)/).length !== 4 ||
    'tesst'.split(/(s)*/)[1] === 't' ||
    'test'.split(/(?:)/, -1).length !== 4 ||
    ''.split(/.?/).length ||
    '.'.split(/()()/).length > 1
) {
    (function () {
        var compliantExecNpcg = /()??/.exec('')[1] === void 0; // NPCG: nonparticipating capturing group

StringPrototype.split = function (separator, limit) {
            var string = this;
            if (separator === void 0 && limit === 0) {
                return [];
            }

// If `separator` is not a regex, use native split
            if (_toString.call(separator) !== '[object RegExp]') {
                return string_split.call(this, separator, limit);
            }

// [bugfix, chrome]
// If separator is undefined, then the result array contains just one String,
// which is the this value (converted to a String). If limit is not undefined,
// then the output array is truncated so that it contains no more than limit
// elements.
// "0".split(undefined, 0) -> []
} else if ('0'.split(void 0, 0).length) {
    StringPrototype.split = function split(separator, limit) {
        if (separator === void 0 && limit === 0) { return []; }
        return string_split.call(this, separator, limit);
    };
}

// ECMA-262, 3rd B.2.3
// Not an ECMAScript standard, although ECMAScript 3rd Edition has a
// non-normative section suggesting uniform semantics and it should be
// normalized across all browsers
// [bugfix, IE lt 9] IE < 9 substr() with negative value not working in IE
var string_substr = StringPrototype.substr;
var hasNegativeSubstrBug = ''.substr && '0b'.substr(-1) !== 'b';
defineProperties(StringPrototype, {
    substr: function substr(start, length) {
        return string_substr.call(
            this,
            start < 0 ? ((start = this.length + start) < 0 ? 0 : start) : start,
            length
        );
    }
}, hasNegativeSubstrBug);

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