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Last change
on this file was 79a0317, checked in by stefan toskovski <stefantoska84@…>, 4 days ago |
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File size:
914 bytes
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| 1 | 'use strict';
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| 2 | var DESCRIPTORS = require('../internals/descriptors');
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| 3 | var FUNCTION_NAME_EXISTS = require('../internals/function-name').EXISTS;
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| 4 | var uncurryThis = require('../internals/function-uncurry-this');
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| 5 | var defineBuiltInAccessor = require('../internals/define-built-in-accessor');
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| 6 |
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| 7 | var FunctionPrototype = Function.prototype;
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| 8 | var functionToString = uncurryThis(FunctionPrototype.toString);
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| 9 | var nameRE = /function\b(?:\s|\/\*[\S\s]*?\*\/|\/\/[^\n\r]*[\n\r]+)*([^\s(/]*)/;
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| 10 | var regExpExec = uncurryThis(nameRE.exec);
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| 11 | var NAME = 'name';
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| 12 |
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| 13 | // Function instances `.name` property
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| 14 | // https://tc39.es/ecma262/#sec-function-instances-name
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| 15 | if (DESCRIPTORS && !FUNCTION_NAME_EXISTS) {
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| 16 | defineBuiltInAccessor(FunctionPrototype, NAME, {
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| 17 | configurable: true,
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| 18 | get: function () {
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| 19 | try {
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| 20 | return regExpExec(nameRE, functionToString(this))[1];
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| 21 | } catch (error) {
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| 22 | return '';
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| 23 | }
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| 24 | }
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| 25 | });
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| 26 | }
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