Broccoli.js from scratch

We'll install and configure Broccoli using a hello world website. Then we'll add a couple of Broccoli plugins for common tasks like loading assets and bundling CSS.

    1. Requirements
    2. Project setup
    3. Install Broccoli
      1. Config Broccoli
    4. Adding Styles
    5. Fontello

All the code for this example can be found here: broccolijs-from-scratch


Install Node.

node -v

npm -v

Project setup

mkdir broccolijs-from-scratch
cd broccolijs-from-scratch
npm init

Answer the questions and the result will be the file package.json.

Install Broccoli

# broccolijs-from-scratch/
npm install -g broccoli@1.0.0-beta.7
npm install --save-dev broccoli

Create an index.html file.

<!DOCTYPE html>
        <meta charset="utf-8">
        <meta http-equiv="X-UA-Compatible" content="IE=edge">
        <meta name="description" content="">
        <meta name="viewport" content="width=device-width, initial-scale=1">
        <h1>Broccoli.js hello world</h1>

Config Broccoli

We will install a Broccoli plugin that allows us to load files into Broccoli trees.

npm install --save-dev broccoli-funnel

Create the file Brocfile.js and add:

var funnel = require('broccoli-funnel');

// the variable `html` now holds a Broccoli tree
var html = funnel('.', {
  files   : ['index.html'],
  destDir : '/'

module.exports = html;

Save the file and build the site:

broccoli build dist

Open in you browser the file dist/index.html and you'll see:

Broccoli.js hello world

Adding Styles

We'll install two Broccoli plugins:

# concatenates the files in a Broccoli tree
npm install --save-dev broccoli-concat

# allows us to merge two Broccoli trees into one
npm install --save-dev broccoli-merge-trees

We add the file style.css with:

body {
  margin: 30px;

In Brocfile.js we add:

var concat = require('broccoli-concat');
var mergeTrees = require('broccoli-merge-trees');

var styles = concat('.', {
               inputFiles : ['style.css'],
               outputFile : '/site.css'

module.exports = mergeTrees([html, styles]);

The final CSS file must be included in index.html:

<link rel="stylesheet" href="site.css">

Rebuild and verify the changes:

rm -r dist/ && broccoli build dist
# visit dist/index.html


We'll add a third party stylesheet that makes use of font files.

In index.html add:

<i class="icon-emo-grin red"></i></a>
<i class="icon-emo-grin green"></i></a>
<i class="icon-emo-grin blue"></i></a>

In style.css add:

.red, .green, .blue {
  font-size: 7rem;

.red {
  background-color: red;
.green {
  background-color: green;
.blue {
  background-color: blue;

In Brocfile.js add:

var styles = concat('.', {
               inputFiles : ['style.css',
               outputFile : '/site.css'

var fonts = funnel('fontello/font', {
  files   : ['fontello.woff',
  destDir : '/font'

module.exports = mergeTrees([html, styles, fonts]);

This time a server will be needed for us to see the changes:

broccoli serve
# visit http://localhost:4200/