browserify-css
Advanced tools
A Browserify transform for bundling, rebasing, inlining, and minifying CSS files
A Browserify transform for bundling, rebasing, inlining, and minifying CSS files. It's useful for CSS modularization where styles are scoped to their related bundles.
If you're new to browserify, check out the browserify handbook and the resources on browserify.org.
npm install --save-dev browserify-css
app.css:
@import url("modules/foo/index.css");
@import url("modules/bar/index.css");
body {
background-color: #fff;
}
app.js:
var css = require('./app.css');
console.log(css);
You can compile your app by passing -t browserify-css to browserify:
$ browserify -t browserify-css app.js > bundle.js
Each require('./path/to/file.css') call will concatenate CSS files with @import statements, rebasing urls, inlining @import, and minifying CSS. It will add a style tag with an optional data-href attribute to the head section of the document during runtime:
<html>
<head>
<style type="text/css" data-href="app.css">...</style>
</head>
</html>
You can set configuration to your package.json file:
{
"browserify-css": {
"autoInject": true,
"minify": true,
"rootDir": "."
}
}
or use an external configuration file like below:
{
"browserify-css": "./config/browserify-css.js"
}
config/browserify-css.js:
module.exports = {
"autoInject": true,
"minify": true,
"rootDir": "."
};
Furthermore, browserify-css transform can obtain options from the command-line with subarg syntax:
$ browserify -t [ browserify-css --autoInject=true ] app.js
or from the api:
b.transform('browserify-css', { autoInject: true })
Type: Boolean
Default: true
If true, each require('path/to/file.css') call will add a style tag to the head section of the document.
Type: Object
Default:
{
"verbose": true
}
If verbose is set to true, the path to CSS will be specified in the data-href attribute inside the style tag
Type: Boolean
Default: false
Type: Object
Default: {}
Check out a list of CSS minify options at CleanCSS.
Type: Function
The processRelativeUrl option accepts a function which takes one argument (the relative url) and returns the original relativeUrl string or the converted result. For example:
var browserify = require('browserify');
browserify(options)
.add('src/index.js')
.transform(require('browserify-css'), {
rootDir: 'src',
processRelativeUrl: function(relativeUrl) {
return relativeUrl;
}
})
.bundle();
You can embed the image data directly into the CSS file with data URI, like so:
var _ = require('lodash');
var path = require('path');
var browserify = require('browserify');
browserify(options)
.add('src/index.js')
.transform(require('browserify-css'), {
rootDir: 'src',
processRelativeUrl: function(relativeUrl) {
if (_.contains(['.jpg','.png','.gif'], path.extname(relativeUrl))) {
// Embed image data with data URI
var DataUri = require('datauri');
var dUri = new DataUri(relativeUrl);
return dUri.content;
}
return relativeUrl;
}
})
.bundle();
You may also want to check out the FAQ for advanced usage.
Type: Boolean
Default: true
If true, relative paths will be rebased in css files; if false, paths will be unchanged.
Type: String
Default: ./
An absolute path to resolve relative paths against the project's base directory.
You can choose one of the following methods to include CSS files located inside the node_modules folder:
@import rule. For example:app.js:
require('./app.css');
app.css:
/* Use CSS from your node_modules folder */
@import "node_modules/foo/foo.css";
/* Or your own relative files */
@import "styles/common.css";
--global-transform or -g) on the command line to transform all files in a node_modules directory:$ browserify -g browserify-css app.js > bundle.js
or use the API directly:
var browserify = require('browserify');
var b = browserify('./app.js');
b.transform('browserify-css', {global: true});
b.bundle().pipe(process.stdout);
See browserify transform options for details.
node_modules directory on a per-module basis like so:node_modules/foo/package.json:
{
"browserify": {
"transform": ["browserify-css"]
}
}
Then, run browserify transform on the command line:
$ browserify -t browserify-css app.js > bundle.js
Assume that you have the following directory structure:
package.json
dist/
src/
index.js
index.css
node_modules/
bootstrap/
dist/
css/
bootstrap.css
The index.css uses @import to import external style sheets:
@import url("../node_modules/bootstrap/dist/css/bootstrap.css");
All output files, including the generated bundle.js, are created under the dist directory:
dist/
bundle.js
vendor/
bootstrap/
dist/
css/
bootstrap.css
Suppose that the dist directory is your web root, you might want to copy external font and images files from ../node_modules/ to dist/vendor/.
For example, the @font-face rules in node_modules/bootstrap/dist/css/bootstrap.css:
@font-face {
font-family: 'Glyphicons Halflings';
src: url('../fonts/glyphicons-halflings-regular.eot');
src: url('../fonts/glyphicons-halflings-regular.eot?#iefix') format('embedded-opentype'),
url('../fonts/glyphicons-halflings-regular.woff2') format('woff2'),
url('../fonts/glyphicons-halflings-regular.woff') format('woff'),
url('../fonts/glyphicons-halflings-regular.ttf') format('truetype'),
url('../fonts/glyphicons-halflings-regular.svg#glyphicons_halflingsregular') format('svg');
}
The example below illustrates the use of the processRelativeUrl option:
var gulp = require('gulp');
var gutil = require('gulp-util');
var path = require('path');
var browserify = require('browserify');
var sourceStream = require('vinyl-source-stream');
var fse = require('fs-extra');
var bundleStream = browserify()
.add('src/index.js')
.transform(require('browserify-css'), {
rootDir: 'src',
processRelativeUrl: function(relativeUrl) {
var stripQueryStringAndHashFromPath = function(url) {
return url.split('?')[0].split('#')[0];
};
var rootDir = path.resolve(process.cwd(), 'src');
var relativePath = stripQueryStringAndHashFromPath(relativeUrl);
var queryStringAndHash = relativeUrl.substring(relativePath.length);
//
// Copying files from '../node_modules/bootstrap/' to 'dist/vendor/bootstrap/'
//
var prefix = '../node_modules/';
if (_.startsWith(relativePath, prefix)) {
var vendorPath = 'vendor/' + relativePath.substring(prefix.length);
var source = path.join(rootDir, relativePath);
var target = path.join(rootDir, vendorPath);
gutil.log('Copying file from ' + JSON.stringify(source) + ' to ' + JSON.stringify(target));
fse.copySync(source, target);
// Returns a new path string with original query string and hash fragments
return vendorPath + queryStringAndHash;
}
return relativeUrl;
}
})
.bundle();
bundleStream
.pipe(sourceStream(bundleFile))
.pipe(gulp.dest(browserifyConfig.dest));
Copyright (c) 2014-2015 Cheton Wu
Licensed under the MIT License.
FAQs
A Browserify transform for bundling, rebasing, inlining, and minifying CSS files
We found that browserify-css demonstrated a not healthy version release cadence and project activity because the last version was released a year ago. It has 1 open source maintainer collaborating on the project.
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