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1 year ago
'use strict';
var GetIntrinsic = require('get-intrinsic');
var $TypeError = GetIntrinsic('%TypeError%');
var substring = require('./substring');
var Type = require('./Type');
var assertRecord = require('../helpers/assertRecord');
// https://ecma-international.org/ecma-262/13.0/#sec-getmatchstring
module.exports = function GetMatchString(S, match) {
if (Type(S) !== 'String') {
throw new $TypeError('Assertion failed: `S` must be a String');
}
assertRecord(Type, 'Match Record', 'match', match);
if (!(match['[[StartIndex]]'] <= S.length)) {
throw new $TypeError('`match` [[StartIndex]] must be a non-negative integer <= the length of S');
}
if (!(match['[[EndIndex]]'] <= S.length)) {
throw new $TypeError('`match` [[EndIndex]] must be an integer between [[StartIndex]] and the length of S, inclusive');
}
return substring(S, match['[[StartIndex]]'], match['[[EndIndex]]']);
};