Edit File: UTF16Encoding.js
'use strict'; var GetIntrinsic = require('get-intrinsic'); var $TypeError = GetIntrinsic('%TypeError%'); var $fromCharCode = GetIntrinsic('%String.fromCharCode%'); var floor = require('./floor'); var modulo = require('./modulo'); var isCodePoint = require('../helpers/isCodePoint'); // https://262.ecma-international.org/7.0/#sec-utf16encoding module.exports = function UTF16Encoding(cp) { if (!isCodePoint(cp)) { throw new $TypeError('Assertion failed: `cp` must be >= 0 and <= 0x10FFFF'); } if (cp <= 65535) { return $fromCharCode(cp); } var cu1 = floor((cp - 65536) / 1024) + 0xD800; var cu2 = modulo(cp - 65536, 1024) + 0xDC00; return $fromCharCode(cu1) + $fromCharCode(cu2); };
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