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Hofmann"},"license":"MIT","homepage":"https://github.com/researchgate/grunt-changed","keywords":["gruntplugin","grunt","changed","files"],"repository":{"url":"git://github.com/researchgate/grunt-changed.git","type":"git"},"description":"Run Grunt tasks with only those source files where the content changed to the last run.","maintainers":[{"email":"michael.haeusler@researchgate.net","name":"haeusler"},{"email":"stefan.hoth@researchgate.net","name":"researchgate-bot"},{"email":"michael.diodone@researchgate.net","name":"mdio"},{"email":"it-contact@researchgate.net","name":"grid_rg"}],"readme":"# grunt-changed\n\n[](https://travis-ci.org/researchgate/grunt-changed)\n[](https://www.npmjs.com/package/grunt-changed)\n\nConfigure [Grunt](http://gruntjs.com/) tasks to run with changed file contents only.\n\n**Synopsis:** The [`changed`](#changed) task will configure another task to run with `src` files that have *a)* different content than on the previous run (based on md5 hash). See below for examples and more detail. This library is heavily inspired by and based on [`grunt-newer`](https://npmjs.org/package/grunt-newer)\n\n## Getting Started\nThis plugin requires at least Grunt `0.4.1` and is also compatible to version `1.0.0`\n\nIf you haven't used [Grunt](http://gruntjs.com/) before, be sure to check out the [Getting Started](http://gruntjs.com/getting-started) guide, as it explains how to create a [`gruntfile.js`](http://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:\n\n```shell\nnpm install grunt-changed --save-dev\n```\n\nOnce the plugin has been installed, it may be enabled inside your `gruntfile.js` with this line:\n\n```js\ngrunt.loadNpmTasks('grunt-changed');\n```\n\n\n## The `changed` task\n\nThe `changed` task doesn't require any special configuration. To use it, just add `changed` as the first argument when running other tasks.\n\nFor example, if you want to use [Uglify](https://npmjs.org/package/grunt-contrib-uglify) to minify your source files only when one or more of them is changed compared to the previous run, configure the `uglify` task as you would otherwise, and then register a task with `changed` at the front.\n\n```js\n grunt.initConfig({\n uglify: {\n all: {\n files: {\n 'dest/app.min.js': ['src/**/*.js']\n }\n }\n }\n });\n\n grunt.loadNpmTasks('grunt-contrib-uglify');\n grunt.loadNpmTasks('grunt-changed');\n\n grunt.registerTask('minify', ['changed:uglify:all']);\n```\n\nWith the above configuration the `minify` task will only run `uglify` if one or more of the `src/**/*.js` files changed after the last run.\n\nThe `changed` task can also be used with tasks that don't generate any `dest` files.\n\nFor example, if you want to run [JSHint](https://npmjs.org/package/grunt-contrib-jshint) on only those files that have been modified since the last successful run, configure the `jshint` task as you would otherwise, and then register a task with `changed` at the front.\n\n```js\n grunt.initConfig({\n jshint: {\n options: {\n jshintrc: '.jshintrc'\n },\n all: {\n src: 'src/**/*.js'\n }\n }\n });\n\n grunt.loadNpmTasks('grunt-contrib-jshint');\n grunt.loadNpmTasks('grunt-changed');\n\n grunt.registerTask('lint', ['changed:jshint:all']);\n```\n\nWith the above configuration, running `grunt lint` will configure your `jshint:all` task to use only files in the `jshint.all.src` config that have been modified since the last successful run of the same task. The first time the `jshint:changed:all` task runs, all source files will be used. After that, only the files you modify will be run through the linter.\n\nAnother example is to use the `changed` task in conjunction with `watch`. For example, you might want to set up a watch to run a linter on all your `.js` files whenever one changes. With the `changed` task, instead of re-running the linter on all files, you only need to run it on the files that changed.\n\n```js\n var srcFiles = 'src/**/*.js';\n\n grunt.initConfig({\n jshint: {\n all: {\n src: srcFiles\n }\n },\n watch: {\n all: {\n files: srcFiles,\n tasks: ['changed:jshint:all']\n }\n }\n });\n\n grunt.loadNpmTasks('grunt-contrib-jshint');\n grunt.loadNpmTasks('grunt-contrib-watch');\n grunt.loadNpmTasks('grunt-changed');\n\n```\n\nWith the above configuration, running `grunt jshint watch` will first lint all your files with `jshint` and then set up a watch. Whenever one of your source files changes, the `jshint` task will be run on just the modified file.\n\n## Options for the `changed` task\n\nIn most cases, you shouldn't need to add any special configuration for the `changed` task. Just `grunt.loadNpmTasks('grunt-changed')` and you can use `changed` as a prefix to your other tasks. The options below are available for advanced usage.\n\n#### options.cache\n * type: `string`\n * default: `node_modules/grunt-changed/.cache`\n\nTo keep track of timestamps for successful runs, the `changed` task writes to a cache directory. The default is to use a `.cache` directory within the `grunt-changed` installation directory. If you need timestamp info to be written to a different location, configure the task with a `cache` option.\n\nExample use of the `cache` option:\n\n```js\n grunt.initConfig({\n changed: {\n options: {\n cache: 'path/to/custom/cache/directory'\n }\n }\n });\n```\n\n## That's it\n\nPlease [submit an issue](https://github.com/researchgate/grunt-changed/issues) if you encounter any trouble. Contributions or suggestions for improvements welcome!\n\n## Known limitations\n\nThe `changed` task relies on Grunt's convention for specifying [`src`/`dest` mappings](http://gruntjs.com/configuring-tasks#files). So it should be expected to work with two types of tasks:\n\nTasks that specify `src` files: The task prefixed by `changed` will be configured to run with `src` files that have changed content to the last run (based on md5 hash of files).\n\n\n","readmeFilename":"README.md"}