Gulpfile

An opinionated and modular gulpfile.

Developed with ❤️ by GRRR

• GRRR is a B Corp
• GRRR has a tech blog
• GRRR is hiring
• @GRRRTech tweets

Installation

Install this package in your project through yarn or npm:

$ npm install @grrr/gulpfile --save-dev

Configuration

1. Create a gulp.json config file (examples).

2. When transpiling JavaScript, add the required Babel dependencies for your project. See the Babel docs for more information. A good starting point is by adding @babel/preset-env:

   $ npm install --save-dev @babel/preset-env

3. When using the watch task, create an environment variable called BROWSERSYNC_PROXY with your app domain (eg: localhost:10000). This will point Browsersync to your app. To do so, add a .env file in the root of your project. You can also load it from another location by specifying it in the gulp.json config file.

Usage

Run gulp by calling:

$ gulp --cwd . --gulpfile 'node_modules/@grrr/gulpfile/gulpfile.js'

You can also add shortcuts as npm scripts, and run them like so:

$ npm run build # run build task
$ npm run watch # run watch task
$ npm run build:production # run build for environment
$ npm run build images # run specific task

To do so, add these to the scripts entry in your package.json.

"scripts": {
  "watch": "gulp watch --cwd . --gulpfile 'node_modules/@grrr/gulpfile/gulpfile.js'",
  "build": "gulp --cwd . --gulpfile 'node_modules/@grrr/gulpfile/gulpfile.js'",
  "build:staging": "gulp --staging --cwd . --gulpfile 'node_modules/@grrr/gulpfile/gulpfile.js'",
  "build:production": "gulp --production --cwd . --gulpfile 'node_modules/@grrr/gulpfile/gulpfile.js'"
},

Available tasks

The individual tasks are:

• browsersync — auto refresh and hot reloading in the browser
• clean — removes all built assets
• copy — copies files that don't need processing (like fonts, videos and the favicon)
• eslint — lints js with opinionated rules, based on Prettier, which can be overwritten by including your own .eslintrc
• images — runs imagemin on all images in the config.paths.images.src and saves the result to config.paths.images.dist
• javascript:build — bundles JavaScript into a single bundle with Rollup and transpiles it with Babel
• javascript:watch — watches for changes and builds the bundle when changes are detected
• javascript:vendor — copies and uglifies vendor files (can also concatenate them)
• init — prints some debug info
• icons — creates a svg sprite
• modernizr — checks js and scss source files for Modernizr tests and creates a custom Modernizr build
• revision — creates a revisioned filename for each static asset
• sass — compiles Sass with globbing and Autoprefixer
• stylelint — lints styles with opinionated rules, which can be overwritten by including your own .stylelintrc

The main tasks are:

• build runs all above tasks, except browsersync (some tasks are dependent on the called environment)
• watch runs the same tasks as default but will retrigger when files are changed, and will start Browsersync

For more info, take a look into the tasks folder.

Prefixer & linter defaults

The project uses a few sensible defaults for prefixers and linters. They can all be overwritten.

Autoprefixer

Used in sass task. Can be specified in the gulp.json file in an autoprefixer object within the sass task.

Style Lint

Used in stylelint tasks. Place a .stylelintrc file in the root of your project.

ESLint

Used in eslint tasks. Place an .eslintrc file in the root of your project. You can additionally add an .eslintignore for ignoring (wildcarded) folders or packages specific to your project.

Contributing

To make changes to this gulpfile, it's best to replace the installed package in a real project with a locally linked development version. To do so, run the following command in the repo of this project:

$ yarn link

Inside the root of the project you want to test @grrr/gulpfile in, run:

$ yarn link @grrr/gulpfile

If you're testing a Node version which doesn't match the current engines restriction, installing or rebuilding won't work. You can circumvent that restriction via:

yarn --force --ignore-engines

When you're done, you can publish the changes and unlink the development version by running:

$ yarn unlink @grrr/gulpfile
$ yarn install

Note that when locally testing updated dependencies, it's better to use a tool like Yalc. Dependency resolution in linked packages (via yarn link) does not work the same way as when the package would've been published.