rework

What is rework?

Rework is a plugin framework for CSS preprocessing. It allows you to manipulate CSS using JavaScript, providing a way to transform stylesheets with various plugins.

What are rework's main functionalities?

CSS Parsing

Rework can parse CSS strings into an Abstract Syntax Tree (AST), which can then be manipulated programmatically.

const rework = require('rework');
const css = 'body { color: red; }';
const ast = rework(css).toString();
console.log(ast);

CSS Transformation

Rework allows you to transform CSS using plugins. For example, the rework-npm plugin lets you import CSS from npm packages.

const rework = require('rework');
const reworkNPM = require('rework-npm');
const css = '@import "normalize.css";';
const output = rework(css).use(reworkNPM()).toString();
console.log(output);

Vendor Prefixing

Rework can automatically add vendor prefixes to CSS properties using plugins like rework-plugin-prefix.

const rework = require('rework');
const reworkPrefix = require('rework-plugin-prefix');
const css = 'body { display: flex; }';
const output = rework(css).use(reworkPrefix('webkit')).toString();
console.log(output);

Other packages similar to rework

postcss

PostCSS is a tool for transforming CSS with JavaScript plugins. It is more modern and widely used compared to Rework, offering a larger ecosystem of plugins and better performance.

less

Less is a CSS pre-processor that extends the CSS language, adding features like variables, mixins, and functions. Unlike Rework, Less is a full-fledged pre-processor rather than a plugin framework.

sass

Sass is another CSS pre-processor that provides advanced features like variables, nested rules, and mixins. Sass is more feature-rich and has a larger community compared to Rework.

README

rework

CSS manipulations built on css, allowing you to automate vendor prefixing, create your own properties, inline images, anything you can imagine!

Please refer to css for AST documentation and to report parser/stringifier issues.

Installation

$ npm install rework

Usage

var rework = require('rework');
var pluginA = require('pluginA');
var pluginB = require('pluginB');

rework('body { font-size: 12px; }', { source: 'source.css' })
  .use(pluginA)
  .use(pluginB)
  .toString({ sourcemap: true })

API

rework(code, [options])

Accepts a CSS string and returns a new Rework instance. The options are passed directly to css.parse.

Rework#use(fn)

Use the given plugin fn. A rework "plugin" is simply a function accepting the stylesheet root node and the Rework instance.

Rework#toString([options])

Returns the string representation of the manipulated CSS. The options are passed directly to css.stringify.

Unlike css.stringify, if you pass sourcemap: true a string will still be returned, with the source map inlined. Also use sourcemapAsObject: true if you want the css.stringify return value.

Plugins

Rework has a rich collection of plugins and mixins. Browse all the Rework plugins available on npm.

Plugins of particular note:

• at2x – serve high resolution images
• calc – resolve simple calc() expressions
• colors – color helpers like rgba(#fc0, .5)
• ease – several additional easing functions
• extend – extend: selector support
• function – user-defined CSS functions
• import – read and inline CSS via @import
• inline – inline assets as data URIs
• mixin – custom property logic with mixins
• npm - inline CSS via @import using node's module resolver
• references – property references like height: @width
• url – rewrite url()s with a given function
• variables – W3C-style variables

Built with rework

• styl
• rework-pure-css
• rework-suit
• resin
• Myth

License

(The MIT License)

Copyright (c) 2012–2013 TJ Holowaychuk [e-mail]

Copyright (c) 2014 Contributors

Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files (the 'Software'), to deal in the Software without restriction, including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do so, subject to the following conditions:

The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software.

THE SOFTWARE IS PROVIDED 'AS IS', WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.