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