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- 'use strict';
- var GetIntrinsic = require('get-intrinsic');
- 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
- });
- };
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