| Leo Repp | 58b9f11 | 2021-11-22 11:57:47 +0100 | [diff] [blame^] | 1 | 'use strict'; |
| 2 | |
| 3 | var callBound = require('call-bind/callBound'); |
| 4 | |
| 5 | var $SymbolValueOf = callBound('Symbol.prototype.valueOf', true); |
| 6 | |
| 7 | var Type = require('./Type'); |
| 8 | |
| 9 | // https://262.ecma-international.org/9.0/#sec-thissymbolvalue |
| 10 | |
| 11 | module.exports = function thisSymbolValue(value) { |
| 12 | if (!$SymbolValueOf) { |
| 13 | throw new SyntaxError('Symbols are not supported; thisSymbolValue requires that `value` be a Symbol or a Symbol object'); |
| 14 | } |
| 15 | if (Type(value) === 'Symbol') { |
| 16 | return value; |
| 17 | } |
| 18 | return $SymbolValueOf(value); |
| 19 | }; |