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Let Grunt do the work,
focus on the fun!
Dirk Ginader, Google, 2013
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Let Grunt do the endlessly
repetitive tedious tasks, focus
on the important stuff!
Dirk Ginader, Google, 2013
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Let Grunt do the work,
focus on the fun!
Dirk Ginader, Google, 2013
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Why Build scripts?
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Because great
Developers
are lazy.
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Because great
Developers
are lazy.
FACT.
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time
spent
task size
non-geek
geek does it manually
makes fun of geek’s
complicated method
loses
does it
manually
gets
annoyed
writes script
to automate
runs script
wins
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Build systems have
been around for ages
• Make
• Maven
• and so many more ...
• Ant
• Rake
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They’re all great and
powerful and all...
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Minify with Ant
Compiling JS files in ${input.scripts.dir} in closure...
Finished compiling JS files
http://mechanics.flite.com/blog/2012/06/19/why-we-use-node-dot-js-and-grunt-to-build-javascript/
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How much I liked to
configure with XML?
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I’m a Front End
Developer!
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I like Javascript
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I like LOVE Javascript
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Just one year ago
Ben Alman did me a
great favor:
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GRUNT
The JavaScript Task Runner
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written in Javascript
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using the node
package manager
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FAST adoption rate
• jQuery
• Modernizr
• Adobe
• twitter
• ...
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because it’s easy!
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System Setup:
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download and install
node.js from:
http://nodejs.org/
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$ npm install -g grunt-cli
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Project Setup:
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2 important Files:
package.json
Gruntfile.js
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package.json
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{
"name": "jQuery-Accessible-Tabs",
"version": "1.9.7",
"homepage": "http://github.com/ginader/Accessible-Tabs",
"author": {
"name": "Dirk Ginader",
"url": "http://ginader.com"
},
"devDependencies": {
}
}
https://npmjs.org/doc/json.html
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Gives you:
• Variables you can use in your script
i.e. version and name
• Dev Dependencies that allows you to
quickly install all required npm modules
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{
"name": "jQuery-Accessible-Tabs",
"version": "1.9.7",
"homepage": "http://github.com/ginader/Accessible-Tabs",
"author": {
"name": "Dirk Ginader",
"url": "http://ginader.com"
},
"devDependencies": {
}
}
https://npmjs.org/doc/json.html
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$ npm install grunt --save-dev
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{
"name": "jQuery-Accessible-Tabs",
"version": "1.9.7",
"homepage": "http://github.com/ginader/Accessible-Tabs",
"author": {
"name": "Dirk Ginader",
"url": "http://ginader.com"
},
"devDependencies": {
"grunt": "~0.4.0"
}
}
https://npmjs.org/doc/json.html
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$ npm install
install all the defined
Dependencies in one go
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Gruntfile.js
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Minify with Grunt
http://mechanics.flite.com/blog/2012/06/19/why-we-use-node-dot-js-and-grunt-to-build-javascript/
module.exports = function(grunt) {
grunt.initConfig({
uglify: {
dist: {
src: 'dist/myfile.js',
dest: 'dist/myfile.min.js'
},
}
});
grunt.loadNpmTasks('grunt-contrib-uglify');
grunt.registerTask('default', ['uglify']);
};
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Minify with Ant
Compiling JS files in ${input.scripts.dir} in closure...
Finished compiling JS files
http://mechanics.flite.com/blog/2012/06/19/why-we-use-node-dot-js-and-grunt-to-build-javascript/
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Minify with Grunt
http://mechanics.flite.com/blog/2012/06/19/why-we-use-node-dot-js-and-grunt-to-build-javascript/
module.exports = function(grunt) {
grunt.initConfig({
uglify: {
dist: {
src: 'dist/myfile.js',
dest: 'dist/myfile.min.js'
}
}
});
grunt.loadNpmTasks('grunt-contrib-uglify');
grunt.registerTask('default', ['uglify']);
};
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Minify with Grunt
http://mechanics.flite.com/blog/2012/06/19/why-we-use-node-dot-js-and-grunt-to-build-javascript/
module.exports = function(grunt) {
grunt.initConfig({
uglify: {
dist: {
src: 'dist/myfile.js',
dest: 'dist/myfile.min.js'
}
}
});
grunt.loadNpmTasks('grunt-contrib-uglify');
grunt.registerTask('default', ['uglify']);
};
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Minify with Grunt
http://mechanics.flite.com/blog/2012/06/19/why-we-use-node-dot-js-and-grunt-to-build-javascript/
module.exports = function(grunt) {
grunt.initConfig({
uglify: {
dist: {
src: 'dist/myfile.js',
dest: 'dist/myfile.min.js'
}
}
});
grunt.loadNpmTasks('grunt-contrib-uglify');
grunt.registerTask('default', ['uglify']);
};
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easy to add more
$ npm i grunt-contrib-jshint --save-dev
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add JS Linting
module.exports = function(grunt) {
grunt.initConfig({
jshint: {
all: ['*.js']
},
uglify: {
dist: {
src: 'myfile.js',
dest: 'myfile.min.js'
}
}
});
grunt.loadNpmTasks('grunt-contrib-uglify');
grunt.loadNpmTasks('grunt-contrib-jshint');
grunt.registerTask('default', ['jshint','uglify']);
};
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add data from package.json
module.exports = function(grunt) {
grunt.initConfig({
pkg: grunt.file.readJSON('package.json'),
jshint: {
all: ['*.js']
},
uglify: {
options: {
banner: '/*! <%= pkg.name %>' +
' <%= grunt.template.today("yyyy-mm-dd") %> */\n'
},
dist: {
src: 'myfile.js',
dest: 'myfile.min.js'
}
}
});
grunt.loadNpmTasks('grunt-contrib-uglify');
grunt.loadNpmTasks('grunt-contrib-jshint');
grunt.registerTask('default', ['jshint','uglify']);
};
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add data from package.json
module.exports = function(grunt) {
grunt.initConfig({
pkg: grunt.file.readJSON('package.json'),
jshint: {
all: ['*.js']
},
uglify: {
options: {
banner: '/*! <%= pkg.name %>' +
' <%= grunt.template.today("yyyy-mm-dd") %> */\n'
},
dist: {
src: '<%= pkg.name %>.js',
dest: '<%= pkg.name %>.min.js'
}
}
});
grunt.loadNpmTasks('grunt-contrib-uglify');
grunt.loadNpmTasks('grunt-contrib-jshint');
grunt.registerTask('default', ['jshint','uglify']);
};
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add data from package.json
module.exports = function(grunt) {
grunt.initConfig({
pkg: grunt.file.readJSON('package.json'),
jshint: {
all: ['*.js']
},
uglify: {
options: {
banner: '/*! <%= pkg.name %>' +
' <%= grunt.template.today("yyyy-mm-dd") %> */\n'
},
dist: {
src: '<%= pkg.name %>.js',
dest: '<%= pkg.name %>.<%= pkg.version %>.min.js'
}
}
});
grunt.loadNpmTasks('grunt-contrib-uglify');
grunt.loadNpmTasks('grunt-contrib-jshint');
grunt.registerTask('default', ['jshint','uglify']);
};
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minify and combine CSS
cssmin: {
compress: {
options: {
banner: '<%= banner %>'
},
files: {
'project.min.css': ['1.css','2.css', '...']
}
}
}
grunt.loadNpmTasks('grunt-contrib-cssmin');
grunt.registerTask('default', ['jshint','uglify', 'cssmin']);
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optimize Images
imagemin: {
dist: {
options: {
optimizationLevel: 3
},
files: {
// 'destination': 'source'
'dist/img.png': 'src/img.png',
'dist/img.jpg': 'src/img.jpg'
}
}
}
grunt.registerTask('default', ['imagemin']);
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but it’s more than just
optimizations
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render markdown to
HTML
markdown: {
all: {
files: ['readme.markdown','version-history.markdown'],
template: 'web/template.html',
dest: 'web',
options: {
gfm: true,
codeLines: {
before: '',
after: ''
}
}
}
}
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remove debug code
removelogging: {
dist: {
src: 'js/jquery.tabs.min.js',
dest: 'js/jquery.tabs.min.js'
}
}
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compile Sass/Compass
// setup Compass/Sass to load from existing config.rb
compass: {
dist: {
options: {
config: 'config.rb'
}
}
}
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and Livereload!
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Scaffolding
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$ npm install -g grunt-init
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many templates for
grunt-init
• Gruntfile
• Grunt plugin
• jQuery plugin
• node.js
• ...
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$ git clone git://
github.com/gruntjs/grunt-
init-jquery.git ~/.grunt-
init/jquery
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$ grunt-init jquery
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The opinions I expressed here represent my own
and not necessarily those of my employer.
btw: We’re hiring! Talk to me :-)
Thank you! Questions?
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Resources
• Grunt: http://gruntjs.com/
• Great article: http://dir.kg/grunt.workflow
• Extending Grunt big time: http://yeoman.io
• Me: http://dir.kg/me
• @ginader on twitter
• the example projects: http://github.com/ginader/
• http://ginader.com
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