| 'use strict'; |
| |
| var GetIntrinsic = require('get-intrinsic'); |
| |
| var has = require('has'); |
| |
| var $TypeError = GetIntrinsic('%TypeError%'); |
| |
| var getSymbolDescription = require('get-symbol-description'); |
| |
| 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 |
| }); |
| }; |