Combine and minify all bower libraries with gruntjs
Is there a way to combine and minify all bower installed libraries into 1 file automatically?
First I tried the most basic approach: combine all .js files from all subdirectories:
uglify: {
options: {compress: true},
my_target: { files: {
'vendor.js': ['bower_components/**/*.js'],
} } }
But this is obviously a bad approach. It also doesn't work because of too many errors.
I manually deleted all the files and kept only 1 (main) file that each library has, and it worked.
Is there a way to do this all automatically?
Also, is it advisable to do it? (i.e. combine all vendor libraries into 1 file)
Answer
I recommend the combination of 2 nice grunt libraries, Wiredep and Usemin:
Wiredep: Load all dependencies of bower identified in bower.json inside your html automatically
Usemin: Detect all src inside two comments tags and all that source are minified and concatenated in dist folder, below are a little example of a grunt files using this packages, is based on the generator of angular to yeoman this is only a brief of that grunt
Grunt
wiredep: {
options: {
cwd: 'appFolder'
},
app: {
src: ['htmlCollections'],
ignorePath: /\.\.\//
}
},
useminPrepare: {
html: 'htmlCollections',
options: {
dest: 'distributionFolder',
flow: {
html: {
steps: {
js: ['concat', 'uglifyjs'],
css: ['cssmin']
},
post: {}
}
}
}
},
usemin: {
html: ['distributionFolder+HtmlFiles'],
css: ['distributionFolder+cssFiles'],
js: ['distributionFolder+javascriptFiles']
}
HTML
<!doctype html>
<html lang="en" ng-app="MobileDev" id="ng-app">
<head>
<!-- build:css(app) styles/vendor.css -->
<!-- bower:css -->
//This gonna be generated for the grunt by dependencies in bower
<!-- endbower -->
<!-- endbuild -->
<!-- build:css(.tmp) styles/main.css -->
//All the script inside this gonna be concatened and minified in
//the dist folder by the name of main.css
<link type="text/css" rel="stylesheet" href="styles/app.css"/>
<!-- endbuild -->
</head>
<body>
<!-- build:js(app) scripts/vendor.js -->
<!-- bower:js -->
//This gonna be generated for the grunt by dependencies in bower
//And in distribution all bower components added gonna be minified by usemin in
//vendor.js
<!-- endbower -->
<!-- endbuild -->
<!-- build:js({.tmp,app}) scripts/scripts.js -->
//All the script inside this gonna be concatened and minified in the dist
//folder by the name of scripts.js
<script type="text/javascript" src="scripts/numero1"></script>
<script type="text/javascript" src="scripts/numero2"></script>
<!-- endbuild -->
</body>