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- 'use strict';
- var define = require('define-data-property');
- var hasDescriptors = require('has-property-descriptors')();
- var functionsHaveConfigurableNames = require('functions-have-names').functionsHaveConfigurableNames();
- var $TypeError = require('es-errors/type');
- /** @type {import('.')} */
- module.exports = function setFunctionName(fn, name) {
- if (typeof fn !== 'function') {
- throw new $TypeError('`fn` is not a function');
- }
- var loose = arguments.length > 2 && !!arguments[2];
- if (!loose || functionsHaveConfigurableNames) {
- if (hasDescriptors) {
- define(/** @type {Parameters<define>[0]} */ (fn), 'name', name, true, true);
- } else {
- define(/** @type {Parameters<define>[0]} */ (fn), 'name', name);
- }
- }
- return fn;
- };
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