CSS Byebye

CSS Byebye is a node module that lets you explicitly remove the CSS rules that you don't want.

Description

It's very simple: pass him a list of selectors that you want to exclude and it will remove them and the associated rules from your CSS.

I've found some cases where this approach is easier than using more powerful tools like uncss. Use what's best for you and give some feedback :)

CSS Byebye is built with postcss postcss.

Note: A grunt task for CSS Byebye is currently being developed.

API

CSS Byebye is a CSS post processor built with postcss; part of its API is defined as in the postcss docs.

It exposes a process method with the following signature:

process(css, options)

• css is your stylesheet
• options is an object that has at least the rulesToRemove property defined.

rulesToRemove is an array of strings or regular expressions (selectors).

If you provide a string, it will remove the rule(s) for this exact selector.

Examples

var cssbyebye = require('css-byebye')

var css = 'a { font-size: 12px; } .hello .h1 { background: red } .world { color: blue }'
var rulesToRemove = ['.hello .h1', '.world']

var result = cssbyebye.process(css, { rulesToRemove: rulesToRemove, map: false })

result will be an object like this:

{
  css: 'a { font-size: 12px; }'
}

If you use the postcss map option, then it will be added to the result object.

You can mix strings and regular expressions

var rulesToRemove = ['.hello', /.*\.world.*/]

In this case, it would remove a rule with the exact selector .hello and any rule that contains the .world class.

Changelog

2015-10-19 v0.2.0

• The default behaviour is to match the exact selector when a string is given.
• Added the possibility to match with regular expressions.