3 // https://mathiasbynens.be/notes/javascript-encoding
4 // https://github.com/bestiejs/punycode.js - punycode.ucs2.decode
5 module.exports = function ucs2length(str) {
12 value = str.charCodeAt(pos++);
13 if (value >= 0xD800 && value <= 0xDBFF && pos < len) {
14 // high surrogate, and there is a next character
15 value = str.charCodeAt(pos);
16 if ((value & 0xFC00) == 0xDC00) pos++; // low surrogate