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files >> //lib/node_modules/npm/node_modules/es-abstract/es5.js
'use strict'; var GetIntrinsic = require('./GetIntrinsic'); var $Object = GetIntrinsic('%Object%'); var $TypeError = GetIntrinsic('%TypeError%'); var $String = GetIntrinsic('%String%'); var $isNaN = require('./helpers/isNaN'); var $isFinite = require('./helpers/isFinite'); var sign = require('./helpers/sign'); var mod = require('./helpers/mod'); var IsCallable = require('is-callable'); var toPrimitive = require('es-to-primitive/es5'); var has = require('has'); // https://es5.github.io/#x9 var ES5 = { ToPrimitive: toPrimitive, ToBoolean: function ToBoolean(value) { return !!value; }, ToNumber: function ToNumber(value) { return +value; // eslint-disable-line no-implicit-coercion }, ToInteger: function ToInteger(value) { var number = this.ToNumber(value); if ($isNaN(number)) { return 0; } if (number === 0 || !$isFinite(number)) { return number; } return sign(number) * Math.floor(Math.abs(number)); }, ToInt32: function ToInt32(x) { return this.ToNumber(x) >> 0; }, ToUint32: function ToUint32(x) { return this.ToNumber(x) >>> 0; }, ToUint16: function ToUint16(value) { var number = this.ToNumber(value); if ($isNaN(number) || number === 0 || !$isFinite(number)) { return 0; } var posInt = sign(number) * Math.floor(Math.abs(number)); return mod(posInt, 0x10000); }, ToString: function ToString(value) { return $String(value); }, ToObject: function ToObject(value) { this.CheckObjectCoercible(value); return $Object(value); }, CheckObjectCoercible: function CheckObjectCoercible(value, optMessage) { /* jshint eqnull:true */ if (value == null) { throw new $TypeError(optMessage || 'Cannot call method on ' + value); } return value; }, IsCallable: IsCallable, SameValue: function SameValue(x, y) { if (x === y) { // 0 === -0, but they are not identical. if (x === 0) { return 1 / x === 1 / y; } return true; } return $isNaN(x) && $isNaN(y); }, // https://www.ecma-international.org/ecma-262/5.1/#sec-8 Type: function Type(x) { if (x === null) { return 'Null'; } if (typeof x === 'undefined') { return 'Undefined'; } if (typeof x === 'function' || typeof x === 'object') { return 'Object'; } if (typeof x === 'number') { return 'Number'; } if (typeof x === 'boolean') { return 'Boolean'; } if (typeof x === 'string') { return 'String'; } }, // https://ecma-international.org/ecma-262/6.0/#sec-property-descriptor-specification-type IsPropertyDescriptor: function IsPropertyDescriptor(Desc) { if (this.Type(Desc) !== 'Object') { return false; } var allowed = { '[[Configurable]]': true, '[[Enumerable]]': true, '[[Get]]': true, '[[Set]]': true, '[[Value]]': true, '[[Writable]]': true }; // jscs:disable for (var key in Desc) { // eslint-disable-line if (has(Desc, key) && !allowed[key]) { return false; } } // jscs:enable var isData = has(Desc, '[[Value]]'); var IsAccessor = has(Desc, '[[Get]]') || has(Desc, '[[Set]]'); if (isData && IsAccessor) { throw new $TypeError('Property Descriptors may not be both accessor and data descriptors'); } return true; }, // https://ecma-international.org/ecma-262/5.1/#sec-8.10.1 IsAccessorDescriptor: function IsAccessorDescriptor(Desc) { if (typeof Desc === 'undefined') { return false; } if (!this.IsPropertyDescriptor(Desc)) { throw new $TypeError('Desc must be a Property Descriptor'); } if (!has(Desc, '[[Get]]') && !has(Desc, '[[Set]]')) { return false; } return true; }, // https://ecma-international.org/ecma-262/5.1/#sec-8.10.2 IsDataDescriptor: function IsDataDescriptor(Desc) { if (typeof Desc === 'undefined') { return false; } if (!this.IsPropertyDescriptor(Desc)) { throw new $TypeError('Desc must be a Property Descriptor'); } if (!has(Desc, '[[Value]]') && !has(Desc, '[[Writable]]')) { return false; } return true; }, // https://ecma-international.org/ecma-262/5.1/#sec-8.10.3 IsGenericDescriptor: function IsGenericDescriptor(Desc) { if (typeof Desc === 'undefined') { return false; } if (!this.IsPropertyDescriptor(Desc)) { throw new $TypeError('Desc must be a Property Descriptor'); } if (!this.IsAccessorDescriptor(Desc) && !this.IsDataDescriptor(Desc)) { return true; } return false; }, // https://ecma-international.org/ecma-262/5.1/#sec-8.10.4 FromPropertyDescriptor: function FromPropertyDescriptor(Desc) { if (typeof Desc === 'undefined') { return Desc; } if (!this.IsPropertyDescriptor(Desc)) { throw new $TypeError('Desc must be a Property Descriptor'); } if (this.IsDataDescriptor(Desc)) { return { value: Desc['[[Value]]'], writable: !!Desc['[[Writable]]'], enumerable: !!Desc['[[Enumerable]]'], configurable: !!Desc['[[Configurable]]'] }; } else if (this.IsAccessorDescriptor(Desc)) { return { get: Desc['[[Get]]'], set: Desc['[[Set]]'], enumerable: !!Desc['[[Enumerable]]'], configurable: !!Desc['[[Configurable]]'] }; } else { throw new $TypeError('FromPropertyDescriptor must be called with a fully populated Property Descriptor'); } }, // https://ecma-international.org/ecma-262/5.1/#sec-8.10.5 ToPropertyDescriptor: function ToPropertyDescriptor(Obj) { if (this.Type(Obj) !== 'Object') { throw new $TypeError('ToPropertyDescriptor requires an object'); } var desc = {}; if (has(Obj, 'enumerable')) { desc['[[Enumerable]]'] = this.ToBoolean(Obj.enumerable); } if (has(Obj, 'configurable')) { desc['[[Configurable]]'] = this.ToBoolean(Obj.configurable); } if (has(Obj, 'value')) { desc['[[Value]]'] = Obj.value; } if (has(Obj, 'writable')) { desc['[[Writable]]'] = this.ToBoolean(Obj.writable); } if (has(Obj, 'get')) { var getter = Obj.get; if (typeof getter !== 'undefined' && !this.IsCallable(getter)) { throw new TypeError('getter must be a function'); } desc['[[Get]]'] = getter; } if (has(Obj, 'set')) { var setter = Obj.set; if (typeof setter !== 'undefined' && !this.IsCallable(setter)) { throw new $TypeError('setter must be a function'); } desc['[[Set]]'] = setter; } if ((has(desc, '[[Get]]') || has(desc, '[[Set]]')) && (has(desc, '[[Value]]') || has(desc, '[[Writable]]'))) { throw new $TypeError('Invalid property descriptor. Cannot both specify accessors and a value or writable attribute'); } return desc; } }; module.exports = ES5;
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