Magento 2 gulpfile

Gulp tasks and configuration necessary to setup gulp-based front-end workflow for deploying and watching theme customizations.

Requirements

• Node.js
• gulp-cli (intalled globally) - npm install -g gulp-cli
• Magento 2 project with LESS based theme

If you need SASS support I highly recommend the excellent Frontools by Snowdog

Installation

1. Download gulpfile.js into the root folder of your project

2. Add the following dependancies to your local package.json file (into devDependancies):

    "autoprefixer": "^9.4.10",
    "browser-sync": "^2.26.7",
    "chalk": "^2.1.0",
    "cssnano": "^4.1.10",
    "fancy-log": "^1.3.3",
    "gulp": "^4.0.2",
    "gulp-clean": "^0.3.2",
    "gulp-eslint": "^5.0.0",
    "gulp-image": "^6.0.0",
    "gulp-image-resize": "^0.13.1",
    "gulp-less": "^4.0.1",
    "gulp-postcss": "^8.0.0",
    "gulp-rename": "^2.0.0",
    "gulp-run": "^1.7.1",
    "gulp-sourcemaps": "^2.6.0",
    "gulp-stylelint": "^8.0.0",
    "minimist": "^1.2.5",
    "postcss-less": "^3.1.2",
    "postcss-uncss": "^0.17.0",
    "stylelint": "^9.10.0",
    "stylelint-config-standard": "^18.2.0",
    "uncss": "^0.17.3"
   

3. Run

    yarn install
   

   or

    npm install
   

Configuration

Copy dev/tools/gulp/configs/ into your root directory and update configuration using the following templates:

themes.js

	module.exports = {
		<"theme-alias">: {
			"locale": locale,
			"lang": "less",
			"area": "frontend",
			"vendor": <"Vendor">,
			"name": <"Theme-name">,
			"files": [
				"css/styles-m",
				"css/styles-l",
				"css/<custom-css>"
			]
		}
	};

• locale: local language,
• lang: css preprocessor (currently only less is supported)
• area: area, one of (frontend|adminhtml|base),
• vendor: developing company,
• name: theme name,
• files: Files to compile

browser-sync.js

    module.exports = {
      	proxy : "local.magento"
    }

proxy: Local address of your site

stylelint.js

	module.exports = {
		"extends": "stylelint-config-standard",
		"ignoreFiles": ["/**/_module.less", "/**/_widgets.less"],
		"rules": {
			"at-rule-empty-line-before": null,
			"no-descending-specificity": true,
			"indentation": 4,
			"string-quotes": "single",
			"selector-max-id": 0,
			"max-nesting-depth": 4,
			"number-leading-zero": "never",
			"max-empty-lines": 2,
			"font-family-no-missing-generic-family-keyword": null
		}
	}

Update rules with your custom ones adding to or overriding the existing standard rules.

eslint.js

module.exports = {
	"configFile": "./dev/tools/gulp/configs/.eslintrc"
}

Note: ESlint configuration is specified within .eslintrc file. Please change your eslint environments and rules there.

uncss.js

module.exports = {
	baseUrl: 'http://local.magento',
	entrypoints: [
		{
			page: 'hp',
			path: '/',
		},
		{
			page: 'pdp',
			path: '/juno-jacket.html',
		},
		{
			page: 'plp',
			path: '/women/tops-women/jackets-women.html',
		}
	]
}

• baseUrl: Local url of your site
• page: page identifier (will used in css file name eg. styles-m-hp.css)
• path: path to page on storefront relative to base url

Usage

To see all available commands in the console run gulp --tasks

Basic tasks

Lint less files:

gulp less:lint [--theme-alias]

Note: _module.less and _widget.less are excluded from linting

Compile less to CSS:

gulp less:compile [--theme-alias]

Alias for less:lint and less:compile sequence:

gulp less [--theme-alias]

Lint js files:

gulp js:lint [--theme-alias]

Alias for js:lint:

gulp js [--theme-alias]

UnCSS main css files:

gulp css:uncss [--theme-alias]

Note: this task requires uncss configuration file (dev/tools/gulp/configs/uncss.js)

Minify css files using postCss:

gulp css:minify [--theme-alias]

Optimize images in the {theme}/web/images folder:

gulp image:theme:optimize [--theme-alias]

Note: this task overwrites existing image files. If you want to keep the original files specify optimized images destination folder in gulp.dest pipe

Optimize specific images in the pub/media folder:

gulp image:media:optimize [--theme-alias --input --output]

Resize specific images:

gulp image:resize [--theme-alias --input --output --width --height --crop --upscale --gravity --format --quality --background --percentage --cover]

Clean local cache in var/page_cache/ var/cache/ /var/di/ /var/generation/:

gulp clean:cache [--theme-alias]

Clean static assets in pub/static and var/view_preprocessed folders:

gulp clean:static [--theme-alias]

Create aliases in pub/static folder:

gulp source [--theme-alias]

Manually trigger static asset deployment for frontend:

gulp deploy:static [--theme-alias]

Manually trigger static asset deployment for admin:

gulp deploy:admin [--theme-alias]

Serves static assets and watches for less file changes in vendor modules/themes:

gulp serve [--theme-alias]

---

Task sequences Lint and compile less:

gulp less [--theme-alias]

JS processing:

gulp js [--theme-alias]

Rebuild aliases and compile less (eg. when adding new less files):

gulp refresh [--theme-alias]

Dev build - clean static assets, lint, compile and watch less files for changes:

gulp dev [--theme-alias]

Prod build - clean static assets, lint, compile and optimize CSS (uncss and minify):

gulp build [--theme-alias]

Note: [--theme-alias] is optional, the first available theme in themes.js is used by default

License

This project is licensed under GNU General Public License v3.0