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Assets Build Automation
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Marconi Moreto
February 25, 2014
Programming
2
280
Assets Build Automation
Automated building of your webapp assets using Gruntjs.
Marconi Moreto
February 25, 2014
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Transcript
Assets Build Automation Marconi Moreto @marconimjr
Story time...
Classic way: <!doctype html> <html> <head> <title>My Awesome WebApp</title> <link
href="/static/css/somegrid.css" type="text/css" rel="stylesheet"/> <link href="/static/css/plugins.css" type="text/css" rel="stylesheet"/> <link href="/static/css/styles.css" type="text/css" rel="stylesheet"/> </head> <body> ... <script src="/static/js/jquery.js" type="text/javascript"></script> <script src="/static/js/plugins.js" type="text/javascript"></script> <script src="/static/js/app.js" type="text/javascript"></script> </body> </html> Number of requests: 7
None
Concatenate everything: <!doctype html> <html> <head> <title>My Awesome WebApp</title> <link
href="/static/css/app.css" type="text/css" rel="stylesheet"/> </head> <body> ... <script src="/static/js/app.js" type="text/javascript"></script> </body> </html> Number of requests: 3
Quick peak 1/2 body { padding: 0; margin: 0; }
#notification { width: 100%; font-size: 18px; text-align: center; padding: 15px 0; } #notification.success { background: #1abc9c; } #notification.error { background: #e74c3c; } app.css app.js /** * Basic notification class */ function Notification(msg, type) { this.msg = msg; this.type = typeof type !== 'undefined' ? type : 'success'; } Notification.prototype.show = function() { // build notification var notif = document.createElement('div'); notif.id = 'notification'; notif.className = this.type; notif.innerHTML = this.msg; // prepend notificaiton var doc = document.getElementsByTagName("body")[0]; doc.insertBefore(notif, doc.firstChild); }; $(function() { new Notification("Welcome!").show(); })(); Size: 277 bytes Size: 543 bytes
None
Minify everything: <!doctype html> <html> <head> <title>My Awesome WebApp</title> <link
href="/static/css/app.min.css" type="text/css" rel="stylesheet"/> </head> <body> ... <script src="/static/js/app.min.js" type="text/javascript"></script> </body> </html> ✓ Number of requests: 3 ✓ Faster loading time
Quick peak 2/2 body{padding:0;margin:0} #notification{width: 100%;font-size:18px;text- align:center;padding:15px 0} #notification.success{backg round:#1abc9c}
#notification.error{backgro und:#e74c3c} app.min.css app.min.js function Notification(a,b){this.msg=a,this.type="undefined"! =typeof b?b:"success"}Notification.prototype.show=function() {var a=document.createElement("div");a.id="notification",a.classNam e=this.type,a.innerHTML=this.msg;var b=document.getElementsByTagName("body") [0];b.insertBefore(a,b.firstChild)},$(function(){new Notification("Welcome!").show()})(); Size: 277 bytes Size: 177 bytes Size: 543 bytes Size: 352 bytes
None
Why do all these?
None
None
None
But why do we automate?
None
But really, why do we automate?
Focus on fun stuff!
The JavaScript Task Runner
✓ Node ✓ JS/Coffee + JSON ✓ Focus on web
development ✓ Over 2,294 plugins! Things to love about Grunt:
None
Who’s using it? And some more: Wordpress, Opera, etc.
$ npm install -g grunt-cli - package.json - Gruntfile.(js|coffee) Getting
started: Installation: Requirements:
{ "name": "MyAwesomeApp", "version": "0.0.1", "private": true } package.json $
npm install grunt --save $ npm install grunt-contrib-uglify --save $ npm install grunt-contrib-cssmin --save ... $ cat package.json { "name": "MyAwesomeApp", "version": "0.0.1", "private": true, "dependencies": { "grunt": "~0.4.2", "grunt-contrib-uglify": "~0.3.2", "grunt-contrib-cssmin": "~0.8.0" } } Install dependencies:
CSS Minification
module.exports = function(grunt) { grunt.initConfig({ pkg: grunt.file.readJSON('package.json'), cssmin: { styles:
{ files: { 'static/css/app.min.css': ['src/css/*.css'] } } } }); grunt.loadNpmTasks('grunt-contrib-cssmin'); grunt.registerTask('default', ['cssmin']); }; Gruntfile.js Lets run it! $ grunt
JS Minification
module.exports = function(grunt) { grunt.initConfig({ pkg: grunt.file.readJSON('package.json'), cssmin: { styles:
{ files: { 'static/css/app.min.css': ['src/css/*.css'] } } }, uglify: { scripts: { files: { 'static/js/app.min.js': [ 'src/js/jquery.js', 'src/js/plugins.js', 'src/js/app.js' ] } } } }); grunt.loadNpmTasks('grunt-contrib-cssmin'); grunt.loadNpmTasks('grunt-contrib-uglify'); grunt.registerTask('default', ['cssmin']); grunt.registerTask('deploy', ['cssmin', 'uglify']); }; Gruntfile.js: Lets run it! $ grunt deploy
Concatenate on development + minify on deploy
module.exports = function(grunt) { grunt.initConfig({ ... concat: { dist: {
src: ['src/js/**/*.js'], dest: 'static/js/app.all.js' } }, uglify: { scripts: { files: { 'static/js/app.min.js': ['static/js/app.all.js'] } } } }); ... grunt.loadNpmTasks('grunt-contrib-concat'); grunt.registerTask('default', ['cssmin', 'concat']); grunt.registerTask('deploy', ['cssmin', 'concat', 'uglify']); }; Gruntfile.js: Lets run it! $ grunt deploy Install plugin: $ npm install grunt-contrib-concat --save
What about SASS? Updated project structure: $ tree . .
├── public │ └── index.html ├── src │ ├── Gruntfile.js │ ├── js │ │ ├── jquery.js │ │ ├── app.js │ │ └── plugins.js │ ├── package.json │ └── sass │ ├── _plugins.scss │ └── app.scss └── static ├── css │ └── app.min.css └── js ├── app.all.js └── app.min.js #notification { width: 100%; font-size: 18px; text-align: center; padding: 15px 0; &.success { background: #1abc9c; } &.error { background: #e74c3c; } } _plugins.scss body { padding: 0; margin: 0; } @import "plugins"; app.scss
module.exports = function(grunt) { grunt.initConfig({ pkg: grunt.file.readJSON('package.json'), sass: { dist:
{ options: { outputStyle: 'compressed' }, files: { '../static/css/app.min.css': 'sass/app.scss' } } }, concat: { ... }, uglify: { ... } }); grunt.loadNpmTasks('grunt-sass'); grunt.loadNpmTasks('grunt-contrib-concat'); grunt.loadNpmTasks('grunt-contrib-uglify'); grunt.registerTask('default', ['sass', 'concat']); grunt.registerTask('deploy', ['sass', 'concat', 'uglify']); }; Gruntfile.js: Install plugin: $ npm install grunt-sass --save
Watching files
module.exports = function(grunt) { grunt.initConfig({ pkg: grunt.file.readJSON('package.json'), ... watch: {
sass: { files: ['sass/**/*.scss'], tasks: ['sass'] }, concat: { files: ['js/**/*.js'], tasks: ['concat'] }, uglify: { files: ['../static/js/app.all.js'], tasks: ['uglify'] } } }); ... grunt.loadNpmTasks("grunt-contrib-watch"); ... }; Gruntfile.js: Install plugin: $ npm install grunt-contrib-watch --save Watch changes: $ grunt watch
<!doctype html> <html> <head> <title>My Awesome WebApp</title> <link href="/static/css/app.min.css" type="text/css"
rel="stylesheet"/> </head> <body> ... <script src="/static/js/app.min.js" type="text/javascript"></script> </body> </html> index.html
None
None
body { padding: 0; margin: 0; } #left, #right {
width: 290px; height: 315px; float: left; margin-right: 10px; } #left { background: url('../images/left.jpg') no-repeat top left; } #right { background: url('../images/right.jpg') no-repeat top left; } @import "plugins"; app.scss
<!doctype html> <html> <head> <title>My Awesome WebApp</title> <link href="/static/css/app.min.css" type="text/css"
rel="stylesheet"/> </head> <body> ... <script src="/static/js/app.min.js" type="text/javascript"></script> </body> </html> index.html Number of requests: 5
module.exports = function(grunt) { grunt.initConfig({ pkg: grunt.file.readJSON('package.json'), sass: { ...
}, imageEmbed: { dist: { src: ['../static/css/app.min.css'], dest: '../static/css/app.min.css', options: {deleteAfterEncoding : false} } }, ... watch: { sass: { files: ['sass/**/*.scss'], tasks: ['sass', 'imageEmbed'] }, ... } }); grunt.loadNpmTasks("grunt-contrib-watch"); grunt.loadNpmTasks("grunt-image-embed"); grunt.registerTask('default', ['sass', 'imageEmbed', 'concat']); grunt.registerTask('deploy', ['sass', 'imageEmbed', 'concat', 'uglify']); }; Gruntfile.js: Install plugin: $ npm install grunt-image-embed --save
Number of requests: 3
OMG!
Thank you Marconi Moreto @marconimjr http://marconijr.com https://github.com/marconi