Bug/35

.gitignore

@@ -26,3 +26,6 @@ node_modules
 
 # Users Environment Variables
 .lock-wscript
+
+#Intellij
+.idea/

.jshintrc

@@ -10,5 +10,7 @@
   "unused": true,
   "boss": true,
   "eqnull": true,
-  "node": true
+  "node": true,
+  "mocha": true,
+  "esversion": 6
 }

.travis.yml

@@ -1,4 +1,8 @@
 language: node_js
 node_js:
-  - "4"
-  - "6"
+  - "12"
+  - "13"
+  - "14"
+  - "15"
+  - "16"
+  - "17"

README.md

@@ -3,7 +3,7 @@ command-exists
 
 node module to check if a command-line command exists
 
-
+**supported Node Versions**: 12+
 
 ## installation
 
@@ -16,32 +16,35 @@ npm install command-exists
 ### async
 
 ```js
-var commandExists = require('command-exists');
+const commandExists = require('command-exists');
 
-commandExists('ls', function(err, commandExists) {
+commandExists('ls', function (err, commandExists) {
 
-    if(commandExists) {
+    if (commandExists) {
         // proceed confidently knowing this command is available
     }
 
 });
 ```
+
 ### promise
+
 ```js
-var commandExists = require('command-exists');
+const commandExists = require('command-exists');
 
 // invoked without a callback, it returns a promise
 commandExists('ls')
-.then(function(command){
-    // proceed
-}).catch(function(){
+    .then(function (command) {
+        // proceed
+    }).catch(function () {
     // command doesn't exist
 });
 ```
 
 ### sync
+
 ```js
-var commandExistsSync = require('command-exists').sync;
+const commandExistsSync = require('command-exists').sync;
 // returns true/false; doesn't throw
 if (commandExistsSync('ls')) {
     // proceed
@@ -51,10 +54,8 @@ if (commandExistsSync('ls')) {
 
 ```
 
-
 ## changelog
 
-
 ### v1.2.9
 
 Fix issue with absolute paths on Windows ([#24](https://github.com/mathisonian/command-exists/pull/24))
@@ -65,7 +66,7 @@ Fix issue with paths on Windows ([#21](https://github.com/mathisonian/command-ex
 
 ### v1.2.7
 
-Removes unnecessary printed output on windows.
+Removes unnecessary printed output on Windows.
 
 ### v1.2.6
 

appveyor.yml

@@ -10,11 +10,12 @@ matrix:
 
 environment:
   matrix:
-    - nodejs_version: "4"
-    - nodejs_version: "6"
-    - nodejs_version: "7"
-    - nodejs_version: "8"
-    - nodejs_version: "9"
+    - nodejs_version: "12"
+    - nodejs_version: "13"
+    - nodejs_version: "14"
+    - nodejs_version: "15"
+    - nodejs_version: "16"
+    - nodejs_version: "17"
 
 install:
   # install modules
@@ -28,4 +29,4 @@ test_script:
   - npm run test
 
 # Don't actually build.
-build: off
+build: off