code cleanup - replace var by let or const

lib/tmp.js

@@ -56,7 +56,7 @@ let
  * @private
  */
 function _randomChars(howMany) {
-  var
+  let
     value = [],
     rnd = null;
 
@@ -253,7 +253,7 @@ function _assertIsRelative(name, option, tmpDir) {
  * @param {?tmpNameCallback} callback the callback function
  */
 function tmpName(options, callback) {
-  let
+  const
     args = _parseArguments(options, callback),
     opts = args[0],
     cb = args[1];
@@ -295,7 +295,7 @@ function tmpName(options, callback) {
  * @throws {Error} if the options are invalid or could not generate a filename
  */
 function tmpNameSync(options) {
-  var
+  const
     args = _parseArguments(options),
     opts = args[0];
 
@@ -321,7 +321,7 @@ function tmpNameSync(options) {
  * @param {?fileCallback} callback
  */
 function file(options, callback) {
-  var
+  const
     args = _parseArguments(options, callback),
     opts = args[0],
     cb = args[1];
@@ -359,7 +359,7 @@ function file(options, callback) {
  * @throws {Error} if cannot create a file
  */
 function fileSync(options) {
-  var
+  const
     args = _parseArguments(options),
     opts = args[0];
 
@@ -386,7 +386,7 @@ function fileSync(options) {
  * @param {?dirCallback} callback
  */
 function dir(options, callback) {
-  var
+  const
     args = _parseArguments(options, callback),
     opts = args[0],
     cb = args[1];
@@ -414,7 +414,7 @@ function dir(options, callback) {
  * @throws {Error} if it cannot create a directory
  */
 function dirSync(options) {
-  var
+  const
     args = _parseArguments(options),
     opts = args[0];
 
@@ -457,7 +457,7 @@ function _removeFileAsync(fdPath, next) {
  * @private
  */
 function _removeFileSync(fdPath) {
-  var rethrownException = null;
+  let rethrownException = null;
   try {
     if (0 <= fdPath[0]) fs.closeSync(fdPath[0]);
   } catch (e) {
@@ -535,7 +535,7 @@ function _prepareTmpDirRemoveCallback(name, opts, sync) {
  * @private
  */
 function _prepareRemoveCallback(removeFunction, fileOrDirName, sync, cleanupCallbackSync) {
-  var called = false;
+  let called = false;
 
   // if sync is true, the next parameter will be ignored
   return function _cleanupCallback(next) {