strip-css-comments

Strip comments from CSS

Also available as a gulp/grunt/broccoli plugin.

Usage

$ npm install --save strip-css-comments

var stripCssComments = require('strip-css-comments');

// by default important comments `/*!` are preserved
stripCssComments('/*! <copyright> */ body { /* unicorns */color: hotpink; }');
//=> '/*! <copyright> */ body { color: hotpink; }'

// `preserve: false` will strip all comments including `/*!`
stripCssComments(
    '/*! <copyright> */ body { /* unicorns */color: hotpink; }',
    {preserve: false}
);
//=> 'body { color: hotpink; }'

// preserve comments based on a regex
stripCssComments(
    '/*# preserved */ body { /* unicorns */color: hotpink; }',
    {preserve: /^#/}
);
//=> '/*# preserved */ body { color: hotpink; }'

// preserve comments based on the return value of the supplied function
stripCssComments(
    '/*# preserved */ body { /* unicorns */color: hotpink; }',
    {
        preserve: function (comment) {
            return comment.charAt(0) === '#';
        }
    }
);
//=> '/*# preserved */ body { color: hotpink; }'

API

stripCssComments(input, [options])

input

Required
Type: string

String with CSS.

options

preserve

Type: boolean, RegExp, function
Default: true

• true - Preserve comments that use the /*! */ syntax
• false - Strip all comments
• RegExp - Preserve comments where the comment body matches a regular expression.
• Function - Preserve comments for which a function returns true. The function is called on each comment, gets the comment body as the first argument, and is expected to return a boolean of whether to preserve the comment.

CLI

$ npm install --global strip-css-comments

$ strip-css-comments --help

  Usage
    $ strip-css-comments <input-file> > <output-file>
    $ strip-css-comments < <input-string>

  Option
    -a, --all  Strip all comments including `/*!`

  Example
    $ strip-css-comments src/app.css > dist/app.css
    $ strip-css-comments < src/app.css --all

Benchmark

$ npm run bench

Related

• strip-json-comments

License

MIT © Sindre Sorhus