tls: change loop var to let

PR-URL: #30445
Reviewed-By: James M Snell <jasnell@gmail.com>
Reviewed-By: Anna Henningsen <anna@addaleax.net>
Reviewed-By: Gireesh Punathil <gpunathi@in.ibm.com>
Reviewed-By: Ruben Bridgewater <ruben@bridgewater.de>

Author: Xavier-Redondo

lib/internal/tls.js

@@ -7,7 +7,7 @@ const { Object } = primordials;
 function parseCertString(s) {
   const out = Object.create(null);
   const parts = s.split('\n');
-  for (var i = 0, len = parts.length; i < len; i++) {
+  for (let i = 0, len = parts.length; i < len; i++) {
     const sepIndex = parts[i].indexOf('=');
     if (sepIndex > 0) {
       const key = parts[i].slice(0, sepIndex);

lib/internal/url.js

@@ -165,7 +165,7 @@ class URLSearchParams {
         // Need to use reflection APIs for full spec compliance.
         this[searchParams] = [];
         const keys = Reflect.ownKeys(init);
-        for (var i = 0; i < keys.length; i++) {
+        for (let i = 0; i < keys.length; i++) {
           const key = keys[i];
           const desc = Reflect.getOwnPropertyDescriptor(init, key);
           if (desc !== undefined && desc.enumerable) {
@@ -203,7 +203,7 @@ class URLSearchParams {
 
     const list = this[searchParams];
     const output = [];
-    for (var i = 0; i < list.length; i += 2)
+    for (let i = 0; i < list.length; i += 2)
       output.push(`${innerInspect(list[i])} => ${innerInspect(list[i + 1])}`);
 
     const length = output.reduce(
@@ -390,7 +390,7 @@ Object.defineProperties(URL.prototype, {
         ...options
       };
       const ctx = this[context];
-      var ret = ctx.scheme;
+      let ret = ctx.scheme;
       if (ctx.host !== null) {
         ret += '//';
         const has_username = ctx.username !== '';
@@ -539,7 +539,7 @@ Object.defineProperties(URL.prototype, {
     configurable: true,
     get() {
       const ctx = this[context];
-      var ret = ctx.host || '';
+      let ret = ctx.host || '';
       if (ctx.port !== null)
         ret += `:${ctx.port}`;
       return ret;
@@ -707,13 +707,13 @@ function initSearchParams(url, init) {
 // Ref: https://url.spec.whatwg.org/#concept-urlencoded-parser
 function parseParams(qs) {
   const out = [];
-  var pairStart = 0;
-  var lastPos = 0;
-  var seenSep = false;
-  var buf = '';
-  var encoded = false;
-  var encodeCheck = 0;
-  var i;
+  let pairStart = 0;
+  let lastPos = 0;
+  let seenSep = false;
+  let buf = '';
+  let encoded = false;
+  let encodeCheck = 0;
+  let i;
   for (i = 0; i < qs.length; ++i) {
     const code = qs.charCodeAt(i);
 
@@ -834,7 +834,7 @@ function serializeParams(array) {
   const firstEncodedValue = encodeStr(array[1], noEscape, paramHexTable);
   let output = `${firstEncodedParam}=${firstEncodedValue}`;
 
-  for (var i = 2; i < len; i += 2) {
+  for (let i = 2; i < len; i += 2) {
     const encodedParam = encodeStr(array[i], noEscape, paramHexTable);
     const encodedValue = encodeStr(array[i + 1], noEscape, paramHexTable);
     output += `&${encodedParam}=${encodedValue}`;
@@ -876,7 +876,7 @@ function defineIDLClass(proto, classStr, obj) {
 function merge(out, start, mid, end, lBuffer, rBuffer) {
   const sizeLeft = mid - start;
   const sizeRight = end - mid;
-  var l, r, o;
+  let l, r, o;
 
   for (l = 0; l < sizeLeft; l++)
     lBuffer[l] = out[start + l];
@@ -926,7 +926,7 @@ defineIDLClass(URLSearchParams.prototype, 'URLSearchParams', {
 
     const list = this[searchParams];
     name = toUSVString(name);
-    for (var i = 0; i < list.length;) {
+    for (let i = 0; i < list.length;) {
       const cur = list[i];
       if (cur === name) {
         list.splice(i, 2);
@@ -947,7 +947,7 @@ defineIDLClass(URLSearchParams.prototype, 'URLSearchParams', {
 
     const list = this[searchParams];
     name = toUSVString(name);
-    for (var i = 0; i < list.length; i += 2) {
+    for (let i = 0; i < list.length; i += 2) {
       if (list[i] === name) {
         return list[i + 1];
       }
@@ -966,7 +966,7 @@ defineIDLClass(URLSearchParams.prototype, 'URLSearchParams', {
     const list = this[searchParams];
     const values = [];
     name = toUSVString(name);
-    for (var i = 0; i < list.length; i += 2) {
+    for (let i = 0; i < list.length; i += 2) {
       if (list[i] === name) {
         values.push(list[i + 1]);
       }
@@ -984,7 +984,7 @@ defineIDLClass(URLSearchParams.prototype, 'URLSearchParams', {
 
     const list = this[searchParams];
     name = toUSVString(name);
-    for (var i = 0; i < list.length; i += 2) {
+    for (let i = 0; i < list.length; i += 2) {
       if (list[i] === name) {
         return true;
       }
@@ -1007,8 +1007,8 @@ defineIDLClass(URLSearchParams.prototype, 'URLSearchParams', {
     // If there are any name-value pairs whose name is `name`, in `list`, set
     // the value of the first such name-value pair to `value` and remove the
     // others.
-    var found = false;
-    for (var i = 0; i < list.length;) {
+    let found = false;
+    for (let i = 0; i < list.length;) {
       const cur = list[i];
       if (cur === name) {
         if (!found) {
@@ -1042,10 +1042,10 @@ defineIDLClass(URLSearchParams.prototype, 'URLSearchParams', {
       // 100 is found through testing.
       // Simple stable in-place insertion sort
       // Derived from v8/src/js/array.js
-      for (var i = 2; i < len; i += 2) {
-        var curKey = a[i];
-        var curVal = a[i + 1];
-        var j;
+      for (let i = 2; i < len; i += 2) {
+        const curKey = a[i];
+        const curVal = a[i + 1];
+        let j;
         for (j = i - 2; j >= 0; j -= 2) {
           if (a[j] > curKey) {
             a[j + 2] = a[j];
@@ -1061,10 +1061,10 @@ defineIDLClass(URLSearchParams.prototype, 'URLSearchParams', {
       // Bottom-up iterative stable merge sort
       const lBuffer = new Array(len);
       const rBuffer = new Array(len);
-      for (var step = 2; step < len; step *= 2) {
-        for (var start = 0; start < len - 2; start += 2 * step) {
-          var mid = start + step;
-          var end = mid + step;
+      for (let step = 2; step < len; step *= 2) {
+        for (let start = 0; start < len - 2; start += 2 * step) {
+          const mid = start + step;
+          let end = mid + step;
           end = end < len ? end : len;
           if (mid > end)
             continue;
@@ -1097,7 +1097,7 @@ defineIDLClass(URLSearchParams.prototype, 'URLSearchParams', {
 
     let list = this[searchParams];
 
-    var i = 0;
+    let i = 0;
     while (i < list.length) {
       const key = list[i];
       const value = list[i + 1];
@@ -1279,10 +1279,10 @@ const forwardSlashRegEx = /\//g;
 
 function getPathFromURLWin32(url) {
   const hostname = url.hostname;
-  var pathname = url.pathname;
-  for (var n = 0; n < pathname.length; n++) {
+  let pathname = url.pathname;
+  for (let n = 0; n < pathname.length; n++) {
     if (pathname[n] === '%') {
-      var third = pathname.codePointAt(n + 2) | 0x20;
+      const third = pathname.codePointAt(n + 2) | 0x20;
       if ((pathname[n + 1] === '2' && third === 102) || // 2f 2F /
           (pathname[n + 1] === '5' && third === 99)) {  // 5c 5C \
         throw new ERR_INVALID_FILE_URL_PATH(
@@ -1303,8 +1303,8 @@ function getPathFromURLWin32(url) {
     return `\\\\${domainToUnicode(hostname)}${pathname}`;
   } else {
     // Otherwise, it's a local path that requires a drive letter
-    var letter = pathname.codePointAt(1) | 0x20;
-    var sep = pathname[2];
+    const letter = pathname.codePointAt(1) | 0x20;
+    const sep = pathname[2];
     if (letter < CHAR_LOWERCASE_A || letter > CHAR_LOWERCASE_Z ||   // a..z A..Z
         (sep !== ':')) {
       throw new ERR_INVALID_FILE_URL_PATH('must be absolute');
@@ -1318,9 +1318,9 @@ function getPathFromURLPosix(url) {
     throw new ERR_INVALID_FILE_URL_HOST(platform);
   }
   const pathname = url.pathname;
-  for (var n = 0; n < pathname.length; n++) {
+  for (let n = 0; n < pathname.length; n++) {
     if (pathname[n] === '%') {
-      var third = pathname.codePointAt(n + 2) | 0x20;
+      const third = pathname.codePointAt(n + 2) | 0x20;
       if (pathname[n + 1] === '2' && third === 102) {
         throw new ERR_INVALID_FILE_URL_PATH(
           'must not include encoded / characters'