postcss-filter-plugins
v3.0.1
Published
Exclude/warn on duplicated PostCSS plugins.
Downloads
2,336,920
Readme
postcss-filter-plugins
Exclude/warn on duplicated PostCSS plugins.
Install
With npm do:
$ npm install postcss-filter-plugins --save
Example
Note that this plugin does not actually transform your CSS; instead, it ensures that plugins in the PostCSS instance are not duplicated. It is intended to be used by plugin packs such as cssnano or cssnext.
var counter = postcss.plugin('counter', function () {
return function (css) {
css.eachDecl('foo', function (decl) {
let value = parseInt(decl.value, 10);
value += 1;
decl.value = String(value);
});
}
});
var css = 'h1 { foo: 1 }';
var out = postcss([
filter(),
counter(),
counter()
]).process(css).css;
console.log(out);
// => h1 { foo: 2 }
// Note that you will get a PostCSS warning in the message registry
API
filterPlugins([options])
options
direction
Type: string
Default: 'both'
Pass 'forward'
, 'backward'
, or 'both'
to customise the direction in which the
plugin will look in the plugins array. See the tests for examples on how this
works.
postcss([ filter({
direction: 'forward'
}) ]).process(css).css);
exclude
Type: array
Default: [] (empty)
Plugins that should be excluded from the filter. Pass an array of plugin names.
postcss([ filter({
exclude: ['postcss-cssstats']
}) ]).process(css).css);
silent
Type: boolean
Default: false
Set this to true to disable the plugin from emitting any PostCSS warnings.
postcss([ filter({
silent: true
}) ]).process(css).css);
template
Type: function
Default: format function
This function will be passed each PostCSS plugin object. You are expected to return a string from each call, which is then used to warn the user about her duplicated plugins.
postcss([ filter({
template: function (plugin) {
return 'Duplicate plugin found: ' + plugin.postcssPlugin;
}
}) ]).process(css).css);
Usage
See the PostCSS documentation for examples for your environment.
Contributors
Thanks goes to these wonderful people (emoji key):
| Ben Briggs💻 📖 👀 ⚠️ | Maxime Thirouin📖 | Andreas Lind💻 | | :---: | :---: | :---: |
This project follows the all-contributors specification. Contributions of any kind welcome!
License
MIT © Ben Briggs