nukecss


Eliminates unused CSS rules. Built from the ground up for single-page apps. Inspired by purifycss and uncss.

How It Works

* Parses the CSS with postcss and gonzales-pe and walks the AST to find the IDs, classes, and DOM types used in selectors.
* Parses HTML and JavaScript sources to find rule usage in strings and attributes, falling back to simple RegExp search when parsing fails.
* Removes rules whose selectors cannot be found in the source set.

Usage

npm install --save nukecss

#### nuke.js
``js
const fs = require('fs')
const nukecss = require('nukecss')
const css = fs.readFileSync('myfile.css')

nukecss('./*/.@(js|html)', css)
// .js-class { color: white; }
// .other-class { color: white; }
// .still-works { color: white; }
// #primary { color: white; }
`

#### myfile.js
`js
const jsignored = "js-class other-class"
const woah = ["still", "works"].join("-")
`

#### myfile.css
`css
.jsignored { color: white; }
.html-ignored { color: white; }
.js-class { color: white; }
.other-class { color: white; }
.still-works { color: white; }
#primary { color: white; }
#primary > .unused { color: white; }
.also-unused { color: white; }
`

#### myfile.html
`html







``