lib: update punycode to 2.1.1

PR-URL: #21768
Reviewed-By: Ruben Bridgewater <ruben@bridgewater.de>
Reviewed-By: Yuta Hiroto <hello@hiroppy.me>
Reviewed-By: Tiancheng "Timothy" Gu <timothygu99@gmail.com>
Reviewed-By: Colin Ihrig <cjihrig@gmail.com>
Reviewed-By: Trivikram Kamat <trivikr.dev@gmail.com>

Author: Trott

lib/punycode.js

@@ -15,7 +15,7 @@ const delimiter = '-'; // '\x2D'
 
 /** Regular expressions */
 constregexPunycode=/^xn--/;
-constregexNonASCII=/[^\x20-\x7E]/;// unprintable ASCII chars + non-ASCII chars
+constregexNonASCII=/[^\0-\x7E]/;// non-ASCII chars
 constregexSeparators=/[\x2E\u3002\uFF0E\uFF61]/g;// RFC 3490 separators
 
 /** Error messages */
@@ -210,7 +210,7 @@ const decode = function(input) {
 basic=0;
 }
 
-for(varj=0;j<basic;++j){
+for(letj=0;j<basic;++j){
 // if it's not a basic code point
 if(input.charCodeAt(j)>=0x80){
 error('not-basic');
@@ -221,15 +221,15 @@ const decode = function(input) {
 // Main decoding loop: start just after the last delimiter if any basic code
 // points were copied; start at the beginning otherwise.
 
-for(varindex=basic>0 ? basic+1 : 0;index<inputLength;/* no final expression */){
+for(letindex=basic>0 ? basic+1 : 0;index<inputLength;/* no final expression */){
 
 // `index` is the index of the next character to be consumed.
 // Decode a generalized variable-length integer into `delta`,
 // which gets added to `i`. The overflow checking is easier
 // if we increase `i` as we go, then subtract off its starting
 // value at the end to obtain `delta`.
 letoldi=i;
-for(varw=1,k=base;/* no condition */;k+=base){
+for(letw=1,k=base;/* no condition */;k+=base){
 
 if(index>=inputLength){
 error('invalid-input');
@@ -345,7 +345,7 @@ const encode = function(input) {
 if(currentValue==n){
 // Represent delta as a generalized variable-length integer.
 letq=delta;
-for(vark=base;/* no condition */;k+=base){
+for(letk=base;/* no condition */;k+=base){
 constt=k<=bias ? tMin : (k>=bias+tMax ? tMax : k-bias);
 if(q<t){
 break;
@@ -419,7 +419,7 @@ const punycode = {
  * @memberOf punycode
  * @type String
  */
-'version': '2.0.0',
+'version': '2.1.0',
 /**
  * An object of methods to convert from JavaScript's internal character
  * representation (UCS-2) to Unicode code points, and back.