cave

Remove critical CSS from your stylesheet after inlining it in your pages

If you don't understand the purpose of this module, refer to penthouse which extracts critical CSS from a file, but doesn't remove it. Using this tool you can take the styles produced by an extraction tool like penthouse and actually remove them from your stylesheet.

Install

npm install cave --save

API

The cave exposes a single function that takes the file path to a stylesheet and a string containing valid CSS you want to remove from the provided stylesheet.

cave(stylesheet, options, done)

The options object contains the following properties.

Property | Description ---------|----------------------------------------------------------------------- css | The CSS rules to remove from the stylesheet. e.g: a { color: #f00; }

Cave will produce an AST and remove any matching rules, then the done callback will be executed.

CLI

Cave works well with standard input.

cat path/to/file | cave <stylesheet> > slim.css

You can also pass in the critical CSS file as an option.

cave --css path/to/file <stylesheet> > slim.css

Tests

Run tests using npm.

npm test

License

MIT