# grunt-contrib-jshint v2.0.0 [![Build Status: Linux](https://travis-ci.org/gruntjs/grunt-contrib-jshint.svg?branch=master)](https://travis-ci.org/gruntjs/grunt-contrib-jshint) [![Build Status: Windows](https://ci.appveyor.com/api/projects/status/j04ik7qgx21ixyfw/branch/master?svg=true)](https://ci.appveyor.com/project/gruntjs/grunt-contrib-jshint/branch/master) > Validate files with JSHint ## Getting Started If you haven't used [Grunt](https://gruntjs.com/) before, be sure to check out the [Getting Started](https://gruntjs.com/getting-started) guide, as it explains how to create a [Gruntfile](https://gruntjs.com/sample-gruntfile) as well as install and use Grunt plugins. Once you're familiar with that process, you may install this plugin with this command: ```shell npm install grunt-contrib-jshint --save-dev ``` Once the plugin has been installed, it may be enabled inside your Gruntfile with this line of JavaScript: ```js grunt.loadNpmTasks('grunt-contrib-jshint'); ``` ## Jshint task _Run this task with the `grunt jshint` command._ Task targets, files and options may be specified according to the grunt [Configuring tasks](https://gruntjs.com/configuring-tasks) guide. ### Options Any specified option will be passed through directly to [JSHint][], thus you can specify any option that JSHint supports. See the [JSHint documentation][] for a list of supported options. [JSHint]: http://jshint.com/ [JSHint documentation]: http://jshint.com/docs/ A few additional options are supported: #### globals Type: `Object` Default: `null` A map of global variables, with keys as names and a boolean value to determine if they are assignable. This is not a standard JSHint option, but is passed into the `JSHINT` function as its third argument. See the [JSHint documentation][] for more information. #### jshintrc Type: `String` or `true` Default: `null` If set to `true`, no config will be sent to JSHint and JSHint will search for `.jshintrc` files relative to the files being linted. If a filename is specified, options and globals defined therein will be used. The `jshintrc` file must be valid JSON and looks something like this: ```json { "curly": true, "eqnull": true, "eqeqeq": true, "undef": true, "globals": { "jQuery": true } } ``` *Be aware that `jshintrc` settings are not merged with your Grunt options.* #### extensions Type: `String` Default: `''` A list of non-dot-js extensions to check. #### ignores Type: `Array` Default: `null` A list of files and dirs to ignore. This will override your `.jshintignore` file if set and does not merge. #### force Type: `Boolean` Default: `false` Set `force` to `true` to report JSHint errors but not fail the task. #### reporter Type: `String` Default: `null` Allows you to modify this plugins output. By default it will use a built-in Grunt reporter. Set the path to your own custom reporter or to one of the built-in JSHint reporters: `jslint` or `checkstyle`. See also: [Writing your own JSHint reporter.](http://jshint.com/docs/reporters/) You can also use an external reporter. For example [jshint-stylish](https://github.com/sindresorhus/jshint-stylish): ``` $ npm install --save-dev jshint-stylish ``` ```js options: { reporter: require('jshint-stylish') } ``` #### reporterOutput Type: `String` Default: `null` Specify a filepath to output the results of a reporter. If `reporterOutput` is specified then all output will be written to the given filepath instead of printed to stdout. ###### reporterOutputRelative Type: `Boolean` Default: `true` Results of a reporter will use a relative filepath to `reporterOutput`. If set to `false` then filepaths will appear relative to the current folder. Unless `reporterOutput` is not set this option will not have any effect. ### Usage examples #### Wildcards In this example, running `grunt jshint:all` (or `grunt jshint` because `jshint` is a [multi task](https://gruntjs.com/configuring-tasks#task-configuration-and-targets)) will lint the project's Gruntfile as well as all JavaScript files in the `lib` and `test` directories and their subdirectories, using the default JSHint options. ```js // Project configuration. grunt.initConfig({ jshint: { all: ['Gruntfile.js', 'lib/**/*.js', 'test/**/*.js'] } }); ``` #### Linting before and after concatenating In this example, running `grunt jshint` will lint both the "beforeconcat" set and "afterconcat" sets of files. This is not ideal, because `dist/output.js` may get linted before it gets created via the [grunt-contrib-concat plugin](https://github.com/gruntjs/grunt-contrib-concat) `concat` task. In this case, you should lint the "beforeconcat" files first, then concat, then lint the "afterconcat" files, by running `grunt jshint:beforeconcat concat jshint:afterconcat`. ```js // Project configuration. grunt.initConfig({ concat: { dist: { src: ['src/foo.js', 'src/bar.js'], dest: 'dist/output.js' } }, jshint: { beforeconcat: ['src/foo.js', 'src/bar.js'], afterconcat: ['dist/output.js'] } }); ``` #### Specifying JSHint options and globals In this example, custom JSHint options are specified. Note that when `grunt jshint:uses_defaults` is run, those files are linted using the default options, but when `grunt jshint:with_overrides` is run, those files are linted using _merged_ task/target options. ```js // Project configuration. grunt.initConfig({ jshint: { options: { curly: true, eqeqeq: true, eqnull: true, browser: true, globals: { jQuery: true }, }, uses_defaults: ['dir1/**/*.js', 'dir2/**/*.js'], with_overrides: { options: { curly: false, undef: true, }, files: { src: ['dir3/**/*.js', 'dir4/**/*.js'] }, } }, }); ``` #### Ignoring specific warnings If you would like to ignore a specific warning: ```shell [L24:C9] W015: Expected '}' to have an indentation at 11 instead at 9. ``` You can toggle it by prepending `-` to the warning id as an option: ```js grunt.initConfig({ jshint: { ignore_warning: { options: { '-W015': true, }, src: ['**/*.js'], }, }, }); ``` ## Release History * 2018-09-22   v2.0.0   Bump devDependencies. Drop Node.js < 6 support. * 2016-11-23   v1.1.0   Fix relative output Bump minor version * 2016-02-16   v1.0.0   Replace String prototype colors with chalk. Update Grunt peerDep to `>=0.4.0`. * 2016-01-17   v0.12.0   Update to JSHint ~2.9.0. * 2015-09-03   v0.11.3   Update to JSHint ~2.8.0. * 2015-04-16   v0.11.2   Fix default value of the `reporter` option. * 2015-03-20   v0.11.1   Fix io.js compatibility issues. Other fixes to pathing. * 2015-01-22   v0.11.0   Update to JSHint ~2.6.0. * 2014-04-02   v0.10.0   Update to JSHint 2.5.0. * 2014-03-12   v0.9.2   Fixes a bug where `reporterOutput` was still passed to JSHint. * 2014-03-12   v0.9.1   Don't pass `reporterOutput` option to JSHint. * 2014-03-12   v0.9.0   Replace deprecated `grunt.util._.clone` with `Object.create()`. Replace deprecated `grunt.util.hooker` with hooker lib. Enhancing the readability of the output. Reporter output is relative to the output file. Pass JSHint options to the external reporter. * 2013-12-25   v0.8.0   Update to JSHint 2.4.0. * 2013-11-16   v0.7.2   Only print file name once per error. * 2013-10-31   v0.7.1   Ability to set jshintrc option to true to use JSHint's native ability for finding .jshintrc files relative to the linted files. * 2013-10-23   v0.7.0   Update to JSHint 2.3.0. * 2013-10-23   v0.6.5   Fix output when `maxerr` is low. * 2013-08-29   v0.6.4   jshintrc now loaded by JSHint allowing comments. * 2013-08-15   v0.6.3   Fix module location for JSHint 2.1.10. * 2013-07-29   v0.6.2   Update to JSHint 2.1.7. * 2013-07-27   v0.6.1   Peg JSHint to 2.1.4 until breaking changes in 2.1.5 are fixed. * 2013-06-02   v0.6.0   Don't always succeed the task when using a custom reporter. Bump JSHint to 2.1.3. * 2013-05-22   v0.5.4   Fix default reporter to show offending file. * 2013-05-19   v0.5.3   Performance: Execute the reporter once rather than per file. * 2013-05-18   v0.5.2   Fix printing too many erroneous ignored file errors. * 2013-05-17   v0.5.1   Fix for when only 1 file is lint free. * 2013-05-17   v0.5.0   Bump to JSHint 2.0. Add support for .jshintignore files and ignores option. Add support for `extensions` option. Add support for custom reporters and output report to a file. * 2013-04-08   v0.4.3   Fix evaluation of `predef` option when it's an object. * 2013-04-08   v0.4.2   Avoid wiping `force` option when jshintrc is used. * 2013-04-06   v0.4.1   Fix to allow object type for deprecated predef. * 2013-04-04   v0.4.0   Revert task level options to override jshintrc files. * 2013-03-13   v0.3.0   Bump to JSHint 1.1.0. Add force option to report JSHint errors but not fail the task. Add error/warning code to message. Allow task level options to override jshintrc file. * 2013-02-26   v0.2.0   Bump to JSHint 1.0. * 2013-02-15   v0.1.1   First official release for Grunt 0.4.0. * 2013-01-18   v0.1.1rc6   Updating grunt/gruntplugin dependencies to rc6. Changing in-development grunt/gruntplugin dependency versions from tilde version ranges to specific versions. * 2013-01-09   v0.1.1rc5   Updating to work with grunt v0.4.0rc5. Switching to `this.filesSrc` API. * 2012-10-18   v0.1.0   Work in progress, not yet officially released. --- Task submitted by ["Cowboy" Ben Alman](http://benalman.com/) *This file was generated on Sat Sep 22 2018 08:57:29.*