isMatchRecord.js
532 Bytes
'use strict';
var has = require('has');
// https://262.ecma-international.org/13.0/#sec-match-records
module.exports = function isMatchRecord(record) {
return (
has(record, '[[StartIndex]]')
&& has(record, '[[EndIndex]]')
&& record['[[StartIndex]]'] >= 0
&& record['[[EndIndex]]'] >= record['[[StartIndex]]']
&& String(parseInt(record['[[StartIndex]]'], 10)) === String(record['[[StartIndex]]'])
&& String(parseInt(record['[[EndIndex]]'], 10)) === String(record['[[EndIndex]]'])
);
};