관리-도구
편집 파일: index.js
'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 = { $applicationCache: true, $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) { // eslint-disable-line func-name-matching if (isArgs(object)) { return originalKeys(slice.call(object)); } else { return originalKeys(object); } }; } } else { Object.keys = keysShim; } return Object.keys || keysShim; }; module.exports = keysShim;