src/third_party/devtools/node_modules/object.assign/dist/browser.js

(function e(t,n,r){function s(o,u){if(!n[o]){if(!t[o]){var a=typeof require=="function"&&require;if(!u&&a)return a(o,!0);if(i)return i(o,!0);var f=new Error("Cannot find module '"+o+"'");throw f.code="MODULE_NOT_FOUND",f}var l=n[o]={exports:{}};t[o][0].call(l.exports,function(e){var n=t[o][1][e];return s(n?n:e)},l,l.exports,e,t,n,r)}return n[o].exports}var i=typeof require=="function"&&require;for(var o=0;o<r.length;o++)s(r[o]);return s})({1:[function(require,module,exports){
'use strict';

var keys = require('object-keys').shim();
delete keys.shim;

var assign = require('./');

module.exports = assign.shim();

delete assign.shim;

},{"./":3,"object-keys":9}],2:[function(require,module,exports){
'use strict';

// modified from https://github.com/es-shims/es6-shim
var keys = require('object-keys');
var bind = require('function-bind');
var canBeObject = function (obj) {
	return typeof obj !== 'undefined' && obj !== null;
};
var hasSymbols = require('has-symbols/shams')();
var toObject = Object;
var push = bind.call(Function.call, Array.prototype.push);
var propIsEnumerable = bind.call(Function.call, Object.prototype.propertyIsEnumerable);
var originalGetSymbols = hasSymbols ? Object.getOwnPropertySymbols : null;

module.exports = function assign(target, source1) {
	if (!canBeObject(target)) { throw new TypeError('target must be an object'); }
	var objTarget = toObject(target);
	var s, source, i, props, syms, value, key;
	for (s = 1; s < arguments.length; ++s) {
		source = toObject(arguments[s]);
		props = keys(source);
		var getSymbols = hasSymbols && (Object.getOwnPropertySymbols || originalGetSymbols);
		if (getSymbols) {
			syms = getSymbols(source);
			for (i = 0; i < syms.length; ++i) {
				key = syms[i];
				if (propIsEnumerable(source, key)) {
					push(props, key);
				}
			}
		}
		for (i = 0; i < props.length; ++i) {
			key = props[i];
			value = source[key];
			if (propIsEnumerable(source, key)) {
				objTarget[key] = value;
			}
		}
	}
	return objTarget;
};

},{"function-bind":7,"has-symbols/shams":8,"object-keys":9}],3:[function(require,module,exports){
'use strict';

var defineProperties = require('define-properties');

var implementation = require('./implementation');
var getPolyfill = require('./polyfill');
var shim = require('./shim');

var polyfill = getPolyfill();

defineProperties(polyfill, {
	getPolyfill: getPolyfill,
	implementation: implementation,
	shim: shim
});

module.exports = polyfill;

},{"./implementation":2,"./polyfill":11,"./shim":12,"define-properties":4}],4:[function(require,module,exports){
'use strict';

var keys = require('object-keys');
var foreach = require('foreach');
var hasSymbols = typeof Symbol === 'function' && typeof Symbol() === 'symbol';

var toStr = Object.prototype.toString;

var isFunction = function (fn) {
	return typeof fn === 'function' && toStr.call(fn) === '[object Function]';
};

var arePropertyDescriptorsSupported = function () {
	var obj = {};
	try {
		Object.defineProperty(obj, 'x', { enumerable: false, value: obj });
        /* eslint-disable no-unused-vars, no-restricted-syntax */
        for (var _ in obj) { return false; }
        /* eslint-enable no-unused-vars, no-restricted-syntax */
		return obj.x === obj;
	} catch (e) { /* this is IE 8. */
		return false;
	}
};
var supportsDescriptors = Object.defineProperty && arePropertyDescriptorsSupported();

var defineProperty = function (object, name, value, predicate) {
	if (name in object && (!isFunction(predicate) || !predicate())) {
		return;
	}
	if (supportsDescriptors) {
		Object.defineProperty(object, name, {
			configurable: true,
			enumerable: false,
			value: value,
			writable: true
		});
	} else {
		object[name] = value;
	}
};

var defineProperties = function (object, map) {
	var predicates = arguments.length > 2 ? arguments[2] : {};
	var props = keys(map);
	if (hasSymbols) {
		props = props.concat(Object.getOwnPropertySymbols(map));
	}
	foreach(props, function (name) {
		defineProperty(object, name, map[name], predicates[name]);
	});
};

defineProperties.supportsDescriptors = !!supportsDescriptors;

module.exports = defineProperties;

},{"foreach":5,"object-keys":9}],5:[function(require,module,exports){

var hasOwn = Object.prototype.hasOwnProperty;
var toString = Object.prototype.toString;

module.exports = function forEach (obj, fn, ctx) {
    if (toString.call(fn) !== '[object Function]') {
        throw new TypeError('iterator must be a function');
    }
    var l = obj.length;
    if (l === +l) {
        for (var i = 0; i < l; i++) {
            fn.call(ctx, obj[i], i, obj);
        }
    } else {
        for (var k in obj) {
            if (hasOwn.call(obj, k)) {
                fn.call(ctx, obj[k], k, obj);
            }
        }
    }
};


},{}],6:[function(require,module,exports){
'use strict';

/* eslint no-invalid-this: 1 */

var ERROR_MESSAGE = 'Function.prototype.bind called on incompatible ';
var slice = Array.prototype.slice;
var toStr = Object.prototype.toString;
var funcType = '[object Function]';

module.exports = function bind(that) {
    var target = this;
    if (typeof target !== 'function' || toStr.call(target) !== funcType) {
        throw new TypeError(ERROR_MESSAGE + target);
    }
    var args = slice.call(arguments, 1);

    var bound;
    var binder = function () {
        if (this instanceof bound) {
            var result = target.apply(
                this,
                args.concat(slice.call(arguments))
            );
            if (Object(result) === result) {
                return result;
            }
            return this;
        } else {
            return target.apply(
                that,
                args.concat(slice.call(arguments))
            );
        }
    };

    var boundLength = Math.max(0, target.length - args.length);
    var boundArgs = [];
    for (var i = 0; i < boundLength; i++) {
        boundArgs.push('$' + i);
    }

    bound = Function('binder', 'return function (' + boundArgs.join(',') + '){ return binder.apply(this,arguments); }')(binder);

    if (target.prototype) {
        var Empty = function Empty() {};
        Empty.prototype = target.prototype;
        bound.prototype = new Empty();
        Empty.prototype = null;
    }

    return bound;
};

},{}],7:[function(require,module,exports){
'use strict';

var implementation = require('./implementation');

module.exports = Function.prototype.bind || implementation;

},{"./implementation":6}],8:[function(require,module,exports){
'use strict';

/* eslint complexity: [2, 17], max-statements: [2, 33] */
module.exports = function hasSymbols() {
	if (typeof Symbol !== 'function' || typeof Object.getOwnPropertySymbols !== 'function') { return false; }
	if (typeof Symbol.iterator === 'symbol') { return true; }

	var obj = {};
	var sym = Symbol('test');
	var symObj = Object(sym);
	if (typeof sym === 'string') { return false; }

	if (Object.prototype.toString.call(sym) !== '[object Symbol]') { return false; }
	if (Object.prototype.toString.call(symObj) !== '[object Symbol]') { return false; }

	// temp disabled per https://github.com/ljharb/object.assign/issues/17
	// if (sym instanceof Symbol) { return false; }
	// temp disabled per https://github.com/WebReflection/get-own-property-symbols/issues/4
	// if (!(symObj instanceof Symbol)) { return false; }

	// if (typeof Symbol.prototype.toString !== 'function') { return false; }
	// if (String(sym) !== Symbol.prototype.toString.call(sym)) { return false; }

	var symVal = 42;
	obj[sym] = symVal;
	for (sym in obj) { return false; } // eslint-disable-line no-restricted-syntax
	if (typeof Object.keys === 'function' && Object.keys(obj).length !== 0) { return false; }

	if (typeof Object.getOwnPropertyNames === 'function' && Object.getOwnPropertyNames(obj).length !== 0) { return false; }

	var syms = Object.getOwnPropertySymbols(obj);
	if (syms.length !== 1 || syms[0] !== sym) { return false; }

	if (!Object.prototype.propertyIsEnumerable.call(obj, sym)) { return false; }

	if (typeof Object.getOwnPropertyDescriptor === 'function') {
		var descriptor = Object.getOwnPropertyDescriptor(obj, sym);
		if (descriptor.value !== symVal || descriptor.enumerable !== true) { return false; }
	}

	return true;
};

},{}],9:[function(require,module,exports){
'use strict';

// modified from https://github.com/es-shims/es5-shim
var has = Object.prototype.hasOwnProperty;
var toStr = Object.prototype.toString;
var slice = Array.prototype.slice;
var isArgs = require('./isArguments');
var isEnumerable = Object.prototype.propertyIsEnumerable;
var hasDontEnumBug = !isEnumerable.call({ toString: null }, 'toString');
var hasProtoEnumBug = isEnumerable.call(function () {}, 'prototype');
var dontEnums = [
	'toString',
	'toLocaleString',
	'valueOf',
	'hasOwnProperty',
	'isPrototypeOf',
	'propertyIsEnumerable',
	'constructor'
];
var equalsConstructorPrototype = function (o) {
	var ctor = o.constructor;
	return ctor && ctor.prototype === o;
};
var excludedKeys = {
	$console: true,
	$external: true,
	$frame: true,
	$frameElement: true,
	$frames: true,
	$innerHeight: true,
	$innerWidth: true,
	$outerHeight: true,
	$outerWidth: true,
	$pageXOffset: true,
	$pageYOffset: true,
	$parent: true,
	$scrollLeft: true,
	$scrollTop: true,
	$scrollX: true,
	$scrollY: true,
	$self: true,
	$webkitIndexedDB: true,
	$webkitStorageInfo: true,
	$window: true
};
var hasAutomationEqualityBug = (function () {
	/* global window */
	if (typeof window === 'undefined') { return false; }
	for (var k in window) {
		try {
			if (!excludedKeys['$' + k] && has.call(window, k) && window[k] !== null && typeof window[k] === 'object') {
				try {
					equalsConstructorPrototype(window[k]);
				} catch (e) {
					return true;
				}
			}
		} catch (e) {
			return true;
		}
	}
	return false;
}());
var equalsConstructorPrototypeIfNotBuggy = function (o) {
	/* global window */
	if (typeof window === 'undefined' || !hasAutomationEqualityBug) {
		return equalsConstructorPrototype(o);
	}
	try {
		return equalsConstructorPrototype(o);
	} catch (e) {
		return false;
	}
};

var keysShim = function keys(object) {
	var isObject = object !== null && typeof object === 'object';
	var isFunction = toStr.call(object) === '[object Function]';
	var isArguments = isArgs(object);
	var isString = isObject && toStr.call(object) === '[object String]';
	var theKeys = [];

	if (!isObject && !isFunction && !isArguments) {
		throw new TypeError('Object.keys called on a non-object');
	}

	var skipProto = hasProtoEnumBug && isFunction;
	if (isString && object.length > 0 && !has.call(object, 0)) {
		for (var i = 0; i < object.length; ++i) {
			theKeys.push(String(i));
		}
	}

	if (isArguments && object.length > 0) {
		for (var j = 0; j < object.length; ++j) {
			theKeys.push(String(j));
		}
	} else {
		for (var name in object) {
			if (!(skipProto && name === 'prototype') && has.call(object, name)) {
				theKeys.push(String(name));
			}
		}
	}

	if (hasDontEnumBug) {
		var skipConstructor = equalsConstructorPrototypeIfNotBuggy(object);

		for (var k = 0; k < dontEnums.length; ++k) {
			if (!(skipConstructor && dontEnums[k] === 'constructor') && has.call(object, dontEnums[k])) {
				theKeys.push(dontEnums[k]);
			}
		}
	}
	return theKeys;
};

keysShim.shim = function shimObjectKeys() {
	if (Object.keys) {
		var keysWorksWithArguments = (function () {
			// Safari 5.0 bug
			return (Object.keys(arguments) || '').length === 2;
		}(1, 2));
		if (!keysWorksWithArguments) {
			var originalKeys = Object.keys;
			Object.keys = function keys(object) {
				if (isArgs(object)) {
					return originalKeys(slice.call(object));
				} else {
					return originalKeys(object);
				}
			};
		}
	} else {
		Object.keys = keysShim;
	}
	return Object.keys || keysShim;
};

module.exports = keysShim;

},{"./isArguments":10}],10:[function(require,module,exports){
'use strict';

var toStr = Object.prototype.toString;

module.exports = function isArguments(value) {
	var str = toStr.call(value);
	var isArgs = str === '[object Arguments]';
	if (!isArgs) {
		isArgs = str !== '[object Array]' &&
			value !== null &&
			typeof value === 'object' &&
			typeof value.length === 'number' &&
			value.length >= 0 &&
			toStr.call(value.callee) === '[object Function]';
	}
	return isArgs;
};

},{}],11:[function(require,module,exports){
'use strict';

var implementation = require('./implementation');

var lacksProperEnumerationOrder = function () {
	if (!Object.assign) {
		return false;
	}
	// v8, specifically in node 4.x, has a bug with incorrect property enumeration order
	// note: this does not detect the bug unless there's 20 characters
	var str = 'abcdefghijklmnopqrst';
	var letters = str.split('');
	var map = {};
	for (var i = 0; i < letters.length; ++i) {
		map[letters[i]] = letters[i];
	}
	var obj = Object.assign({}, map);
	var actual = '';
	for (var k in obj) {
		actual += k;
	}
	return str !== actual;
};

var assignHasPendingExceptions = function () {
	if (!Object.assign || !Object.preventExtensions) {
		return false;
	}
	// Firefox 37 still has "pending exception" logic in its Object.assign implementation,
	// which is 72% slower than our shim, and Firefox 40's native implementation.
	var thrower = Object.preventExtensions({ 1: 2 });
	try {
		Object.assign(thrower, 'xy');
	} catch (e) {
		return thrower[1] === 'y';
	}
	return false;
};

module.exports = function getPolyfill() {
	if (!Object.assign) {
		return implementation;
	}
	if (lacksProperEnumerationOrder()) {
		return implementation;
	}
	if (assignHasPendingExceptions()) {
		return implementation;
	}
	return Object.assign;
};

},{"./implementation":2}],12:[function(require,module,exports){
'use strict';

var define = require('define-properties');
var getPolyfill = require('./polyfill');

module.exports = function shimAssign() {
	var polyfill = getPolyfill();
	define(
		Object,
		{ assign: polyfill },
		{ assign: function () { return Object.assign !== polyfill; } }
	);
	return polyfill;
};

},{"./polyfill":11,"define-properties":4}]},{},[1]);