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node_modules/es-abstract/2017/SetFunctionName.js
| 44 lines
| 1.4 KiB
| application/javascript
| JavascriptLexer
|
| r789 | 'use strict'; | |||
| var GetIntrinsic = require('../GetIntrinsic'); | ||||
| var has = require('has'); | ||||
| var $TypeError = GetIntrinsic('%TypeError%'); | ||||
| var getSymbolDescription = require('../helpers/getSymbolDescription'); | ||||
| var DefinePropertyOrThrow = require('./DefinePropertyOrThrow'); | ||||
| var IsExtensible = require('./IsExtensible'); | ||||
| var Type = require('./Type'); | ||||
| // https://ecma-international.org/ecma-262/6.0/#sec-setfunctionname | ||||
| module.exports = function SetFunctionName(F, name) { | ||||
| if (typeof F !== 'function') { | ||||
| throw new $TypeError('Assertion failed: `F` must be a function'); | ||||
| } | ||||
| if (!IsExtensible(F) || has(F, 'name')) { | ||||
| throw new $TypeError('Assertion failed: `F` must be extensible, and must not have a `name` own property'); | ||||
| } | ||||
| var nameType = Type(name); | ||||
| if (nameType !== 'Symbol' && nameType !== 'String') { | ||||
| throw new $TypeError('Assertion failed: `name` must be a Symbol or a String'); | ||||
| } | ||||
| if (nameType === 'Symbol') { | ||||
| var description = getSymbolDescription(name); | ||||
| // eslint-disable-next-line no-param-reassign | ||||
| name = typeof description === 'undefined' ? '' : '[' + description + ']'; | ||||
| } | ||||
| if (arguments.length > 2) { | ||||
| var prefix = arguments[2]; | ||||
| // eslint-disable-next-line no-param-reassign | ||||
| name = prefix + ' ' + name; | ||||
| } | ||||
| return DefinePropertyOrThrow(F, 'name', { | ||||
| '[[Value]]': name, | ||||
| '[[Writable]]': false, | ||||
| '[[Enumerable]]': false, | ||||
| '[[Configurable]]': true | ||||
| }); | ||||
| }; | ||||