Edit File: UTF16EncodeCodePoint.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://ecma-international.org/ecma-262/12.0/#sec-utf16encoding module.exports = function UTF16EncodeCodePoint(cp) { if (!isCodePoint(cp)) { throw new $TypeError('Assertion failed: `cp` must be >= 0 and <= 0x10FFFF'); } if (cp <= 65535) { return $fromCharCode(cp); } var cu1 = $fromCharCode(floor((cp - 65536) / 1024) + 0xD800); var cu2 = $fromCharCode(modulo(cp - 65536, 1024) + 0xDC00); return cu1 + cu2; };
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