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26 lines
884 B
26 lines
884 B
'use strict'; |
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var $TypeError = require('es-errors/type'); |
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var substring = require('./substring'); |
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var isMatchRecord = require('../helpers/records/match-record'); |
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// https://262.ecma-international.org/13.0/#sec-getmatchstring |
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module.exports = function GetMatchString(S, match) { |
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if (typeof S !== 'string') { |
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throw new $TypeError('Assertion failed: `S` must be a String'); |
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} |
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if (!isMatchRecord(match)) { |
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throw new $TypeError('Assertion failed: `match` must be a Match Record'); |
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} |
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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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