github-pages-deploy-action/node_modules/es-abstract/2018/thisSymbolValue.js

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2020-03-07 11:45:40 +08:00
'use strict';
var callBound = require('../helpers/callBound');
var $SymbolValueOf = callBound('Symbol.prototype.valueOf', true);
var Type = require('./Type');
// https://ecma-international.org/ecma-262/9.0/#sec-thissymbolvalue
module.exports = function thisSymbolValue(value) {
if (!$SymbolValueOf) {
throw new SyntaxError('Symbols are not supported; thisSymbolValue requires that `value` be a Symbol or a Symbol object');
}
if (Type(value) === 'Symbol') {
return value;
}
return $SymbolValueOf(value);
};