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'use strict';
var GetIntrinsic = require('get-intrinsic');
var CodePointAt = require('./CodePointAt');
var $TypeError = GetIntrinsic('%TypeError%');
var Type = require('./Type');
// https://262.ecma-international.org/14.0/#sec-isstringwellformedunicode
module.exports = function IsStringWellFormedUnicode(string) {
if (Type(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
};
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