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musix-oss/node_modules/es-abstract/2018/IsRegExp.js
2020-03-03 22:30:50 +02:00

25 lines
547 B
JavaScript

'use strict';
var GetIntrinsic = require('../GetIntrinsic');
var $match = GetIntrinsic('%Symbol.match%', true);
var hasRegExpMatcher = require('is-regex');
var ToBoolean = require('./ToBoolean');
// https://ecma-international.org/ecma-262/6.0/#sec-isregexp
module.exports = function IsRegExp(argument) {
if (!argument || typeof argument !== 'object') {
return false;
}
if ($match) {
var isRegExp = argument[$match];
if (typeof isRegExp !== 'undefined') {
return ToBoolean(isRegExp);
}
}
return hasRegExpMatcher(argument);
};