hatch-surf/node_modules/es-abstract/2023/IsStringWellFormedUnicode.js
Riley Zhang df378d33ef
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Merge GitHub main into Gitea repo (allow unrelated histories)
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Co-Authored-By: Paperclip <noreply@paperclip.ing>
2026-06-25 05:20:46 +02:00

24 lines
631 B
JavaScript

'use strict';
var CodePointAt = require('./CodePointAt');
var $TypeError = require('es-errors/type');
// https://262.ecma-international.org/14.0/#sec-isstringwellformedunicode
module.exports = function IsStringWellFormedUnicode(string) {
if (typeof string !== 'string') {
throw new $TypeError('Assertion failed: `string` must be a String');
}
var len = string.length; // step 1
var k = 0; // step 2
while (k < len) { // step 3
var cp = CodePointAt(string, k); // step 3.a
if (cp['[[IsUnpairedSurrogate]]']) {
return false; // step 3.b
}
k += cp['[[CodeUnitCount]]']; // step 3.c
}
return true; // step 4
};