40 lines
901 B
JavaScript
40 lines
901 B
JavaScript
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'use strict';
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var GetIntrinsic = require('get-intrinsic');
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var callBound = require('call-bind/callBound');
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var $TypeError = GetIntrinsic('%TypeError%');
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var Type = require('./Type');
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var isInteger = require('../helpers/isInteger');
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var $charAt = callBound('String.prototype.charAt');
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// https://262.ecma-international.org/12.0/#sec-splitmatch
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module.exports = function SplitMatch(S, q, R) {
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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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if (!isInteger(q)) {
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throw new $TypeError('Assertion failed: `q` must be an integer');
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}
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if (Type(R) !== 'String') {
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throw new $TypeError('Assertion failed: `R` must be a String');
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}
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var r = R.length;
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var s = S.length;
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if (q + r > s) {
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return 'not-matched';
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}
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for (var i = 0; i < r; i += 1) {
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if ($charAt(S, q + i) !== $charAt(R, i)) {
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return 'not-matched';
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}
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}
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return q + r;
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};
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