Require Node.js 10 and upgrade XO

.travis.yml

@@ -1,5 +1,5 @@
 language: node_js
 node_js:
+  - '14'
+  - '12'
   - '10'
-  - '8'
-  - '6'

gruntfile.js

@@ -8,15 +8,15 @@ module.exports = grunt => {
 			xo: {
 				command: 'grunt xo',
 				options: {
-					callback(_, stdout, stderr, cb) {
-						if (/test\/fixture\.js/.test(stdout)) {
-							if (/camelcase/.test(stdout) && /no-unused-vars/.test(stdout)) {
-								cb();
+					callback(_, stdout, stderr, done) {
+						if (stdout.includes('test/fixture.js')) {
+							if (stdout.includes('camelcase') && stdout.includes('no-unused-vars')) {
+								done();
 							} else {
-								cb(false);
+								done(false);
 							}
 						} else {
-							cb(false);
+							done(false);
 						}
 					}
 				}

license

@@ -1,6 +1,6 @@
 MIT License
 
-Copyright (c) Sindre Sorhus <sindresorhus@gmail.com> (sindresorhus.com)
+Copyright (c) Sindre Sorhus <sindresorhus@gmail.com> (https://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:
 

package.json

@@ -4,13 +4,14 @@
 	"description": "Validate files with XO",
 	"license": "MIT",
 	"repository": "xojs/grunt-xo",
+	"funding": "https://github.com/sponsors/sindresorhus",
 	"author": {
 		"name": "Sindre Sorhus",
 		"email": "sindresorhus@gmail.com",
-		"url": "sindresorhus.com"
+		"url": "https://sindresorhus.com"
 	},
 	"engines": {
-		"node": ">=6"
+		"node": ">=10"
 	},
 	"scripts": {
 		"test": "xo --ignore=test/fixture.js && grunt"
@@ -47,7 +48,7 @@
 		"simple"
 	],
 	"dependencies": {
-		"xo": "^0.24.0"
+		"xo": "^0.32.0"
 	},
 	"devDependencies": {
 		"grunt": "^1.0.1",

readme.md

@@ -1,4 +1,4 @@
-# grunt-xo [![Build Status](https://travis-ci.org/xojs/grunt-xo.svg?branch=master)](https://travis-ci.org/xojs/grunt-xo)
+# grunt-xo [![Build Status](https://travis-ci.com/xojs/grunt-xo.svg?branch=master)](https://travis-ci.com/github/xojs/grunt-xo)
 
 > Validate files with [XO](https://github.com/xojs/xo)
 
@@ -8,14 +8,12 @@ Please consider if you really need Grunt for this. Using a [npm run script](http
 
 *Issues regarding rules should be reported on the ESLint [issue tracker](https://github.com/eslint/eslint/issues) as it's the actual linter.*
 
-
 ## Install
 
 ```
 $ npm install --save-dev grunt-xo
 ```
 
-
 ## Usage
 
 ```js
@@ -33,7 +31,6 @@ grunt.initConfig({
 grunt.registerTask('default', ['xo']);
 ```
 
-
 ## Options
 
 XO [options](https://github.com/xojs/xo#config) can be specified in package.json.
@@ -42,8 +39,8 @@ In the Gruntfile you can specify the following options:
 
 ##### reporter
 
-Type: `string`<br>
-Default: [`eslint-formatter-pretty`](https://github.com/sindresorhus/eslint-formatter-pretty)
+Type: `string`\
+Default: [`'eslint-formatter-pretty'`](https://github.com/sindresorhus/eslint-formatter-pretty)
 
 Any [ESLint reporter](http://eslint.org/docs/user-guide/command-line-interface#f---format).
 
@@ -55,12 +52,7 @@ Output the report to a file.
 
 ### quiet
 
-Type: `boolean`<br>
+Type: `boolean`\
 Default: `false`
 
 Report errors only.
-
-
-## License
-
-MIT © [Sindre Sorhus](https://sindresorhus.com)

tasks/xo.js

@@ -3,36 +3,40 @@ const xo = require('xo');
 
 module.exports = grunt => {
 	grunt.registerMultiTask('xo', 'Validate files with XO', function () {
-		const cb = this.async();
-		const opts = this.options({
+		const done = this.async();
+
+		const options = this.options({
 			outputFile: false,
 			quiet: false
 		});
 
 		if (this.filesSrc.length === 0) {
-			cb();
+			done();
 			return;
 		}
 
-		xo.lintFiles(this.filesSrc).then(report => {
-			let {results} = report;
+		(async () => {
+			try {
+				const report = await xo.lintFiles(this.filesSrc);
+				let {results} = report;
 
-			if (opts.quiet) {
-				results = xo.getErrorResults(results);
-			}
+				if (options.quiet) {
+					results = xo.getErrorResults(results);
+				}
 
-			const output = xo.getFormatter(opts.reporter)(results);
+				const output = xo.getFormatter(options.reporter)(results);
 
-			if (opts.outputFile) {
-				grunt.file.write(opts.outputFile, output);
-			} else {
-				console.log(output);
-			}
+				if (options.outputFile) {
+					grunt.file.write(options.outputFile, output);
+				} else {
+					console.log(output);
+				}
 
-			cb(report.errorCount === 0);
-		}).catch(error => {
-			grunt.warn(error);
-			cb();
-		});
+				done(report.errorCount === 0);
+			} catch (error) {
+				grunt.warn(error);
+				done();
+			}
+		})();
 	});
 };