sheetify

Modular CSS bundler for browserify. Works with npm modules like browserify does.

Features

• clarity: namespace CSS, no more need for naming schemes
• modularity: import and reuse CSS packages from npm
• extensibility: transform CSS using existing plugins, or write your own
• transparency: inline CSS in your views
• simplicity: tiny API surface and a minimal code base

Example

Given some inline CSS:

const vdom = require('virtual-dom')
const hyperx = require('hyperx')
const sf = require('sheetify')
const hx = hyperx(vdom.h)

const prefix = sf`
  h1 {
    text-align: center;
  }
`

const tree = hx`
  <section className=${prefix}>
    <h1>My beautiful, centered title</h1>
  </section>
`

document.body.appendChild(vdom.create(tree))

Compile with browserify using -t sheetify/transform:

$ browserify -t sheetify/transform index.js > bundle.js

CSS classes are namespaced based on the content hash:

._60ed23ec9f h1 {
  text-align: center;
}

And the rendered HTML includes the namespace:

<section class="._60ed23e">
  <h1>My beautiful, centered title</h1>
</section>

External files

To include an external CSS file you can pass a path to sheetify as sheetify('./my-file.css'):

const vdom = require('virtual-dom')
const hyperx = require('hyperx')
const sf = require('sheetify')
const hx = hyperx(vdom.h)

const prefix = sf('./my-styles.css')

const tree = hx`
  <section className=${prefix}>
    <h1>My beautiful, centered title</h1>
  </section>
`

document.body.appendChild(vdom.create(tree))

Use npm packages

To consume a package from npm that has .css file in its main or style field:

const sf = require('sheetify')

sf('normalize.css')

Packages from npm will not be namespaced by default.

Toggle namespaces

To toggle namespaces for external files or npm packages:

const sf = require('sheetify')

sf('./my-file.css', { global: true })

Write to separate file on disk

To write the compiled CSS to a separate file, rather than keep it in the bundle:

$ browserify -t [ sheetify/transform -o bundle.css ] index.js > bundle.js

Write to stream

To write the compiled CSS to a stream:

const browserify = require('browserify')
const fs = require('fs')

const b = browserify(path.join(__dirname, 'transform/source.js'))
const ws = fs.createWriteStream('/bundle.css')
b.transform('sheetify', { out: ws })
const r = b.bundle().pipe(fs.createWriteStream('./bundle.js'))
r.on('end', () => ws.end())

Browserify transforms don't know when browserify is done, so we have to attach a listener on browserify for the 'end' event to close the writeStream accordingly.

Plugins

Sheetify uses plugins that take CSS and apply a transform. For example include sheetify-cssnext to support autoprefixing, variables and more:

const vdom = require('virtual-dom')
const hyperx = require('hyperx')
const sf = require('sheetify')
const hx = hyperx(vdom.h)

const prefix = sf`
  h1 {
    transform: translate(0, 0);
  }
`

const tree = hx`
  <section className=${prefix}>
    <h1>My beautiful, centered title</h1>
  </section>
`

document.body.appendChild(vdom.create(tree))

Compile with browserify using -t [ sheetify/transform -u sheetify-cssnext ]:

$ browserify -t [ sheetify/transform -u sheetify-cssnext ] index.js > bundle.js

Transforms the CSS into:

h1 {
  -webkit-transform: translate(0, 0);
          transform: translate(0, 0);
}

The following plugins are available:

• sheetify-cssnext - use tomorrow's CSS syntax today

API

Browserify transforms accept either flags from the command line using subargs:

$ browserify -t [ sheetify/transform -o bundle.css ] index.js > bundle.js

Or the equivalent options by passing in a configuration object in the JavaScript API:

const browserify = require('browserify')

const b = browserify(path.join(__dirname, 'transform/source.js'))
b.transform('sheetify', { out: path.join(__dirname, '/bundle.css') })
b.bundle().pipe(process.stdout)

The following options are available:

Options:
  -o, --out    Specify an output file
  -u, --use    Consume a sheetify plugin

Installation

$ npm install sheetify

License

MIT