mirror of
https://github.com/joelwmale/webhook-action.git
synced 2024-11-25 17:06:52 +01:00
25 lines
700 B
JavaScript
25 lines
700 B
JavaScript
'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);
|
|
};
|