1 | 'use strict';
|
2 | var DESCRIPTORS = require('../internals/descriptors');
|
3 | var FUNCTION_NAME_EXISTS = require('../internals/function-name').EXISTS;
|
4 | var uncurryThis = require('../internals/function-uncurry-this');
|
5 | var defineBuiltInAccessor = require('../internals/define-built-in-accessor');
|
6 |
|
7 | var FunctionPrototype = Function.prototype;
|
8 | var functionToString = uncurryThis(FunctionPrototype.toString);
|
9 | var nameRE = /function\b(?:\s|\/\*[\S\s]*?\*\/|\/\/[^\n\r]*[\n\r]+)*([^\s(/]*)/;
|
10 | var regExpExec = uncurryThis(nameRE.exec);
|
11 | var NAME = 'name';
|
12 |
|
13 |
|
14 |
|
15 | if (DESCRIPTORS && !FUNCTION_NAME_EXISTS) {
|
16 | defineBuiltInAccessor(FunctionPrototype, NAME, {
|
17 | configurable: true,
|
18 | get: function () {
|
19 | try {
|
20 | return regExpExec(nameRE, functionToString(this))[1];
|
21 | } catch (error) {
|
22 | return '';
|
23 | }
|
24 | }
|
25 | });
|
26 | }
|