const 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: comment => comment.charAt(0) === '#'
    }
);
//=> '/*# preserved */ body { color: hotpink; }'