Require Node.js >=6 and Grunt >=1

.editorconfig

@@ -7,6 +7,6 @@ charset = utf-8
 trim_trailing_whitespace = true
 insert_final_newline = true
 
-[{package.json,*.yml}]
+[*.yml]
 indent_style = space
 indent_size = 2

.gitattributes

@@ -1,2 +1 @@
-* text=auto
-*.js text eol=lf
+* text=auto eol=lf

.gitignore

@@ -1 +1,2 @@
 node_modules
+yarn.lock

.npmrc

@@ -0,0 +1 @@
+package-lock=false

.travis.yml

@@ -1,5 +1,5 @@
-sudo: false
 language: node_js
 node_js:
+  - '10'
+  - '8'
   - '6'
-  - '4'

gruntfile.js

@@ -1,29 +1,30 @@
 'use strict';
+
 module.exports = grunt => {
 	let checkCounter = 0;
 
 	function check(substring) {
 		checkCounter++;
 
-		return (err, stdout, stderr, cb) => {
-			if (err) {
-				grunt.fatal(`Command failed: ${err}`);
+		return (error, stdout, stderr, callback) => {
+			if (error) {
+				grunt.fatal(`Command failed: ${error}`);
 			}
 
 			if (!stdout.includes(substring)) {
 				grunt.fatal(`Expected substring not found: ${substring}`);
 			}
 
 			checkCounter--;
-			cb();
+			callback();
 		};
 	}
 
 	let path = null;
 
-	function pathCallback(err, stdout, stderr, cb) {
-		if (err) {
-			grunt.fatal(`Command failed: ${err}`);
+	function pathCallback(error, stdout, stderr, callback) {
+		if (error) {
+			grunt.fatal(`Command failed: ${error}`);
 		}
 
 		if (path === null) {
@@ -32,7 +33,7 @@ module.exports = grunt => {
 			grunt.fatal('Path shouldn\'t have changed!');
 		}
 
-		cb();
+		callback();
 	}
 
 	grunt.initConfig({

license

@@ -1,21 +1,9 @@
-The MIT License (MIT)
+MIT License
 
 Copyright (c) Sindre Sorhus <[email protected]> (sindresorhus.com)
 
-Permission is hereby granted, free of charge, to any person obtaining a copy
-of this software and associated documentation files (the "Software"), to deal
-in the Software without restriction, including without limitation the rights
-to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
-copies of the Software, and to permit persons to whom the Software is
-furnished to do so, subject to the following conditions:
+Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files (the "Software"), to deal in the Software without restriction, including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do so, subject to the following conditions:
 
-The above copyright notice and this permission notice shall be included in
-all copies or substantial portions of the Software.
+The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software.
 
-THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
-IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
-FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
-AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
-LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
-OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
-THE SOFTWARE.
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.

package.json

@@ -1,47 +1,44 @@
 {
-  "name": "grunt-shell",
-  "version": "2.1.0",
-  "description": "Run shell commands",
-  "license": "MIT",
-  "repository": "sindresorhus/grunt-shell",
-  "author": {
-    "name": "Sindre Sorhus",
-    "email": "[email protected]",
-    "url": "sindresorhus.com"
-  },
-  "engines": {
-    "node": ">=4"
-  },
-  "scripts": {
-    "test": "xo && grunt"
-  },
-  "files": [
-    "tasks"
-  ],
-  "keywords": [
-    "gruntplugin",
-    "shell",
-    "command",
-    "cmd",
-    "exec",
-    "spawn",
-    "child",
-    "process",
-    "cli"
-  ],
-  "dependencies": {
-    "chalk": "^1.0.0",
-    "npm-run-path": "^2.0.0"
-  },
-  "devDependencies": {
-    "grunt": "^1.0.1",
-    "grunt-cli": "^1.2.0",
-    "xo": "0.20.3"
-  },
-  "peerDependencies": {
-    "grunt": ">=0.4.0"
-  },
-  "xo": {
-    "esnext": true
-  }
+	"name": "grunt-shell",
+	"version": "2.1.0",
+	"description": "Run shell commands",
+	"license": "MIT",
+	"repository": "sindresorhus/grunt-shell",
+	"author": {
+		"name": "Sindre Sorhus",
+		"email": "[email protected]",
+		"url": "sindresorhus.com"
+	},
+	"engines": {
+		"node": ">=6"
+	},
+	"scripts": {
+		"test": "xo && grunt"
+	},
+	"files": [
+		"tasks"
+	],
+	"keywords": [
+		"gruntplugin",
+		"shell",
+		"command",
+		"cmd",
+		"exec",
+		"spawn",
+		"child",
+		"process",
+		"cli"
+	],
+	"dependencies": {
+		"chalk": "^2.4.1",
+		"npm-run-path": "^2.0.0"
+	},
+	"devDependencies": {
+		"grunt": "^1.0.1",
+		"grunt-cli": "^1.2.0",
+		"xo": "^0.23.0"
+	},
+	"peerDependencies": {
+		"grunt": ">=1"
+	}
 }

readme.md

@@ -2,28 +2,26 @@
 
 > Run shell commands
 
-A good way to interact with other CLI tools. E.g. compiling Compass `compass compile` or get the current git branch `git branch`.
+A good way to interact with other CLI tools. For example, get the current Git branch with `git branch`.
 
 **Use [Stack Overflow](https://stackoverflow.com/questions/tagged/gruntjs) for support questions.**
 
----
-
-<p align="center"><b>🔥 Want to strengthen your core JavaScript skills and master ES6?</b><br>I would personally recommend this awesome <a href="https://ES6.io/friend/AWESOME">ES6 course</a> by Wes Bos.</p>
-
----
-
 
 ## Install
 
 ```
 $ npm install --save-dev grunt-shell
 ```
 
+<a href="https://www.patreon.com/sindresorhus">
+	<img src="https://c5.patreon.com/external/logo/[email protected]" width="160">
+</a>
+
 
 ## Usage
 
 ```js
-require('load-grunt-tasks')(grunt); // npm install --save-dev load-grunt-tasks
+require('load-grunt-tasks')(grunt);
 
 grunt.initConfig({
 	shell: {
@@ -33,7 +31,7 @@ grunt.initConfig({
 		target: {
 			command: 'ls'
 		},
-		another: 'ls ./src' // shorthand
+		another: 'ls ./src' // Shorthand
 	}
 });
 
@@ -90,7 +88,7 @@ module.exports = grunt => {
 	grunt.initConfig({
 		shell: {
 			greet: {
-				command: greeting => 'echo ' + greeting
+				command: greeting => `echo ${greeting}`
 			}
 		}
 	});
@@ -117,14 +115,14 @@ grunt.initConfig({
 Do whatever you want with the output.
 
 ```js
-function log(err, stdout, stderr, cb) {
-	if (err) {
-		cb(err);
+function log(error, stdout, stderr, callback) {
+	if (error) {
+		callback(error);
 		return;
 	}
 
 	console.log(stdout);
-	cb();
+	callback();
 }
 
 grunt.initConfig({
@@ -141,7 +139,7 @@ grunt.initConfig({
 
 ### Option passed to the .exec() method
 
-Run a command in another directory. In this example we run it in a subfolder using the `cwd` (current working directory) option.
+Run a command in another directory. In this example, we run it in a subfolder using the `cwd` (current working directory) option.
 
 ```js
 grunt.initConfig({
@@ -233,13 +231,13 @@ Default: `false`
 
 Set `stdin` to [act as a raw device](https://nodejs.org/api/tty.html#tty_readstream_setrawmode_mode).
 
-### callback(err, stdout, stderr, cb)
+### callback(error, stdout, stderr, callback)
 
 Type: `Function`
 
 Lets you override the default callback with your own.
 
-**Make sure to call the `cb` method when you're done.** Supply an error as the first argument to `cb` to print a warning and cause the task to fail.
+**Make sure to call the `callback` method when you're done.** Supply an error as the first argument to `callback` to print a warning and cause the task to fail.
 
 ### preferLocal
 

tasks/shell.js

@@ -1,14 +1,14 @@
 'use strict';
-const exec = require('child_process').exec;
+const {exec} = require('child_process');
 const chalk = require('chalk');
 const npmRunPath = require('npm-run-path');
 
 const TEN_MEGABYTES = 1000 * 1000 * 10;
 
 module.exports = grunt => {
-	grunt.registerMultiTask('shell', 'Run shell commands', function () {
-		const cb = this.async();
-		const opts = this.options({
+	grunt.registerMultiTask('shell', 'Run shell commands', function (...args) {
+		const callback = this.async();
+		const options = this.options({
 			stdout: true,
 			stderr: true,
 			stdin: true,
@@ -20,7 +20,7 @@ module.exports = grunt => {
 			}
 		});
 
-		let cmd = typeof this.data === 'string' || typeof this.data === 'function' ?
+		let cmd = (typeof this.data === 'string' || typeof this.data === 'function') ?
 			this.data :
 			this.data.command;
 
@@ -29,27 +29,27 @@ module.exports = grunt => {
 		}
 
 		// Increase max buffer
-		opts.execOptions = Object.assign({}, opts.execOptions);
-		opts.execOptions.maxBuffer = opts.execOptions.maxBuffer || TEN_MEGABYTES;
+		options.execOptions = Object.assign({}, options.execOptions);
+		options.execOptions.maxBuffer = options.execOptions.maxBuffer || TEN_MEGABYTES;
 
-		cmd = grunt.template.process(typeof cmd === 'function' ? cmd.apply(grunt, arguments) : cmd);
+		cmd = grunt.template.process(typeof cmd === 'function' ? cmd.apply(grunt, args) : cmd);
 
-		if (opts.preferLocal === true) {
-			opts.execOptions.env = npmRunPath.env({env: opts.execOptions.env || process.env});
+		if (options.preferLocal === true) {
+			options.execOptions.env = npmRunPath.env({env: options.execOptions.env || process.env});
 		}
 
 		if (this.data.cwd) {
-			opts.execOptions.cwd = this.data.cwd;
+			options.execOptions.cwd = this.data.cwd;
 		}
 
-		const cp = exec(cmd, opts.execOptions, (err, stdout, stderr) => {
-			if (typeof opts.callback === 'function') {
-				opts.callback.call(this, err, stdout, stderr, cb);
+		const cp = exec(cmd, options.execOptions, (error, stdout, stderr) => {
+			if (typeof options.callback === 'function') {
+				options.callback.call(this, error, stdout, stderr, callback);
 			} else {
-				if (err && opts.failOnError) {
-					grunt.warn(err);
+				if (error && options.failOnError) {
+					grunt.warn(error);
 				}
-				cb();
+				callback();
 			}
 		});
 
@@ -65,19 +65,19 @@ module.exports = grunt => {
 
 		grunt.verbose.writeln('Command:', chalk.yellow(cmd));
 
-		if (opts.stdout || grunt.option('verbose')) {
+		if (options.stdout || grunt.option('verbose')) {
 			captureOutput(cp.stdout, process.stdout);
 		}
 
-		if (opts.stderr || grunt.option('verbose')) {
+		if (options.stderr || grunt.option('verbose')) {
 			captureOutput(cp.stderr, process.stderr);
 		}
 
-		if (opts.stdin) {
+		if (options.stdin) {
 			process.stdin.resume();
 			process.stdin.setEncoding('utf8');
 
-			if (opts.stdinRawMode && process.stdin.isTTY) {
+			if (options.stdinRawMode && process.stdin.isTTY) {
 				process.stdin.setRawMode(true);
 			}