It's like dotfiles but for grunt.
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Grunt will include any tasks in ~/.grunt/tasks. Any files put in there might override built-in tasks or create new custom one. This is a really nice feature, it's maybe not really well documented yet, but it's kinda hot if you ask me.

It's like dotfiles but for grunt.

In addition to that, grunt has this special init task that can be used to setup a variety of scaffolding use case. It'll also scan the ~/.grunt/tasks/init folder to lookup any valid templates.

I'll be using this repo to manage my collection of grunt custom tasks and scaffolding templates.


git clone git:// ~/.grunt
cd ~/.grunt
npm install

The npm install command will install the appropriate dependencies in ~/.grunt, and run the postinstall script scripts/install.js.

This postinstall script will lookup for any package.json in the tasks dir and try to install each nested modules individually.

grunt --help

You should see no red here and the few additionnal tasks added.


There's a few special files in the hierarchy.

  • tasks/*.js: Any .js files in the ~/.grunt/tasks dir are automatically loaded by grunt.
  • tasks/autoload.js: This file, being a .js file inside the ~/.grunt/tasks directory, is automatically loaded by grunt and will itself require and load any package in the ./tasks/ dir.
  • tasks/init/: is a special folder only used with built-in grunt init task. Each tasks/init/*.js files are templates that may be run via grunt init:template command.
  • tasks/*/package.json: Any package.json get loaded by the npm scripts (see below) and enables tasks to be layout in their own modules.
  • scripts/*: Any npm script related files are put in there (postinstall, test, update, ...). Usually, they'll lookup for appropriate package.json files tasks and use npm programmatically.

The idea is that any other folder in tasks/ than the init one is required to load-in any additional tasks or helpers. This autoload mechanism + the npm install script enables task to be contained within their own module, with dependencies properly sandboxed.


grunt init:vows

This one is pretty simple and will prompt for various informations to generate a basic vows suite inside the ./test/ dir.

Running "init:vows" (init) task

Please answer the following:
[?] Project name (projectname)
[?] filename (test.js)
[?] subject (The Deep Thought)
[?] context (An instance of DeepThought)
[?] vows (should know the answer to the ultimate question of life)
[?] Are these answers correct? (Y/n)

Writing test/test.js...OK

Initialized from template "vows".

Done, without errors.

grunt init:h5bp

This one will fetch latest copy of html5-boilerplate files from master and add a basic grunt.js file at the dirname location.

Running "init:h5bp" (init) task

Fetching latest copy of html5-boilerplate files

Please answer the following:
[?] dirname (./)
[?] files (**.*)
[?] Are these answers correct? (Y/n)

Fetching 18 files from h5bp/html5-boilerplate repo...
Writing grunt.js...OK

Initialized from template "h5bp".

grunt init:h5bp:bootstrap

This one is slight variation of init:h5bp by adding in a few prompts to remotely fetch files from twitter bootstrap's repo too.

The gruntfile added will also include necessary config to build bootstrap's stylesheets from less files. The watch:less task may even be used to recompile them as they're changing.

Running "init:h5bp:bootstrap" (init) task

Fetching latest copy of html5-boilerplate files

Please answer the following:
[?] dirname (./)
[?] files (**.*)
[?] Would you like to include bootstrap files? (Y/n)
[?] Which ones? (ignored if previous answer not Y or y) (**.less js/*.js)
[?] Are these answers correct? (Y/n)

Fetching 18 files from h5bp/html5-boilerplate repo...

Fetching 47 files from twitter/bootstrap repo...

Which bootstrap plugin files would you like concat'd into js/plugins.js

Note that popovers requires tooltip plugin to be included first,
so be sure to include both files if popover is needed.

Please answer the following:
[?] Would you like them to be minified? (Y/n)
[?] bootstrap-typeahead.js >> js/plugins.js (Y/n)
[?] bootstrap-transition.js >> js/plugins.js (Y/n)
[?] bootstrap-tooltip.js >> js/plugins.js (Y/n)
[?] bootstrap-tab.js >> js/plugins.js (Y/n)
[?] bootstrap-scrollspy.js >> js/plugins.js (Y/n)
[?] bootstrap-popover.js >> js/plugins.js (Y/n)
[?] bootstrap-modal.js >> js/plugins.js (Y/n)
[?] bootstrap-dropdown.js >> js/plugins.js (Y/n)
[?] bootstrap-collapse.js >> js/plugins.js (Y/n)
[?] bootstrap-carousel.js >> js/plugins.js (Y/n)
[?] bootstrap-button.js >> js/plugins.js (Y/n)
[?] bootstrap-alert.js >> js/plugins.js (Y/n)
[?] Are these answers correct? (Y/n)

Writing grunt.js...OK

Initialized from template "h5bp".

Done, without errors.

grunt less

The less task will compile any expanded less files into raw CSS. It'll run a compilation through the less compiler for each files in the fileset. The CSS results of these less files is then concat'd into the destincation file.

Just as the built-in concat / min grunt tasks, the destination file (the file that'll be written to the file system) is guessed by resolving the subprop task name.

  less: {
    'css/bootstrap.css': ['less/bootstrap.less'],
    'css/bootstrap.min.css': ['less/bootstrap.less'],
    'css/bootstrap-responsive.css': ['less/responsive.less'],
    'css/bootstrap-responsive.min.css': ['less/responsive.less'],
    'css/style.css': ['less/bootstrap.less', 'less/responsive.less']

Would output the following to the console when grunt less is run:

  Running "less:css/bootstrap.css" (less) task
  Writing to ./css/bootstrap.css...OK

  Running "less:css/bootstrap.min.css" (less) task
  Writing to ./css/bootstrap.min.css...OK

  Running "less:css/bootstrap-responsive.css" (less) task
  Writing to ./css/bootstrap-responsive.css...OK

  Running "less:css/bootstrap-responsive.min.css" (less) task
  Writing to ./css/bootstrap-responsive.min.css...OK

  Running "less:css/style.css" (less) task
  Writing to ./css/style.css...OK

  Done, without errors.

grunt install

A basic wrapper on top of npm's install. This simply creates a grunt install task that might be used to install npm packages from grunt right into the ~/.grunt directory.

It may come handy when a built-task in ~/.grunt is missing one more dependencies:

grunt install:rimraf
grunt install:handlebars

grunt install:clean-css:requirejs:coffee-script

grunt help

This task will use the grunt documentation and nicely ouput them in the console as a manpage. First time the task is called, the latest copy of grunt documentation are fetched from master repo.

Then ronnjs is used to generate the according manpage when the following commands are run:

grunt help:api
grunt help:configuring

Running just help will output the following:

Running "help" task
>> Unable to find related page for undefined. Valid terms are: api
>> api_log
>> configuring
>> contributing
>> example_gruntfiles
>> exit_codes
>> helpers_directives
>> task_concat
>> tasks_builtin
>> tasks_creating
>> toc
Would you like to open the toc page instead?

Please answer the following:
[?] toc (Y/n)
[?] Are these answers correct? (Y/n)


Even though tasks may be layout in different and independant nested npm modules, the top level npm test command should be able to aggregate them.

npm test

It works by running the scripts/test.s and by using npm programmatically to lookup any tasks/*/package.json and run each package's "test" script.

Note: The install commands works pretty much the same. When npm install is run from the top-level dir, it'll use a postinstall script and the scripts/install.js file to lookup nested package and install them. This acts much the same ways as cd'ing into each one individually and installing them on the command-line.