{"maintainers":[{"name":"beneb","email":"beneb.info@gmail.com"}],"keywords":["css","postcss","postcss-plugin"],"dist-tags":{"latest":"2.0.2"},"author":{"name":"Ben Briggs","email":"beneb.info@gmail.com","url":"http://beneb.info"},"description":"Exclude/warn on duplicated PostCSS plugins.","readme":"# [postcss][postcss]-filter-plugins [][ci]\n\n> Exclude/warn on duplicated PostCSS plugins.\n\n## Install\n\nWith [npm](https://npmjs.org/package/postcss-filter-plugins) do:\n\n```console\n$ npm install postcss-filter-plugins --save\n```\n\n## Example\n\nNote that this plugin does not actually transform your CSS; instead, it ensures\nthat plugins in the PostCSS instance are not duplicated. It is intended to be\nused by plugin packs such as [cssnano] or [cssnext].\n\n```js\nvar counter = postcss.plugin('counter', function () {\n return function (css) {\n css.eachDecl('foo', function (decl) {\n let value = parseInt(decl.value, 10);\n value += 1;\n decl.value = String(value);\n });\n }\n});\n\nvar css = 'h1 { foo: 1 }';\nvar out = postcss([\n filter(),\n counter(),\n counter()\n]).process(css).css;\n\nconsole.log(out);\n// => h1 { foo: 2 }\n// Note that you will get a PostCSS warning in the message registry\n```\n\n## API\n\n### filterPlugins([options])\n\n#### options\n\n##### direction\n\nType: `string` \nDefault: `'both'`\n\nPass `'forward'`, `'backward'`, or `'both'` to customise the direction in which the\nplugin will look in the plugins array. See the [tests] for examples on how this\nworks.\n\n```js\npostcss([ filter({\n direction: 'forward'\n}) ]).process(css).css);\n```\n\n##### exclude\n\nType: `array` \nDefault: `[] (empty)`\n\nPlugins that should be excluded from the filter. Pass an array of plugin names.\n\n```js\npostcss([ filter({\n exclude: ['postcss-cssstats']\n}) ]).process(css).css);\n```\n\n##### silent\n\nType: `boolean` \nDefault: `false`\n\nSet this to true to disable the plugin from emitting any PostCSS warnings.\n\n```js\npostcss([ filter({\n silent: true\n}) ]).process(css).css);\n```\n\n##### template\n\nType: `function` \nDefault: `format function`\n\nThis function will be passed each PostCSS plugin object. You are expected to\nreturn a string from each call, which is then used to warn the user about her\nduplicated plugins.\n\n```js\npostcss([ filter({\n template: function (plugin) {\n return 'Duplicate plugin found: ' + plugin.postcssPlugin;\n }\n}) ]).process(css).css);\n```\n\n## Usage\n\nSee the [PostCSS documentation](https://github.com/postcss/postcss#usage) for\nexamples for your environment.\n\n## Contributors\n\nThanks goes to these wonderful people ([emoji key](https://github.com/kentcdodds/all-contributors#emoji-key)):\n\n\n| [![](\"https://avatars.githubusercontent.com/u/1282980?v=3\")
Ben Briggs](http://beneb.info)
[💻](https://github.com/postcss/postcss-filter-plugins/commits?author=ben-eb) [📖](https://github.com/postcss/postcss-filter-plugins/commits?author=ben-eb) 👀 [⚠️](https://github.com/postcss/postcss-filter-plugins/commits?author=ben-eb) | [![](\"https://avatars.githubusercontent.com/u/157534?v=3\")
Maxime Thirouin](https://moox.io/)
[📖](https://github.com/postcss/postcss-filter-plugins/commits?author=MoOx) | [![](\"https://avatars.githubusercontent.com/u/373545?v=3\")
Andreas Lind](https://github.com/papandreou)
[💻](https://github.com/postcss/postcss-filter-plugins/commits?author=papandreou) |\n| :---: | :---: | :---: |\n\n\nThis project follows the [all-contributors](https://github.com/kentcdodds/all-contributors) specification.\nContributions of any kind welcome!\n\n\n## License\n\nMIT © [Ben Briggs](http://beneb.info)\n\n[ci]: https://travis-ci.org/postcss/postcss-filter-plugins\n[cssnano]: http://cssnano.co\n[cssnext]: http://cssnext.io\n[postcss]: https://github.com/postcss/postcss\n[tests]: src/__tests__\n","repository":{"type":"git","url":"git+https://github.com/postcss/postcss-filter-plugins.git"},"bugs":{"url":"https://github.com/postcss/postcss-filter-plugins/issues"},"license":"MIT","versions":{"1.0.0":{"name":"postcss-filter-plugins","version":"1.0.0","description":"Exclude/warn on duplicated PostCSS plugins.","main":"dist/index.js","scripts":{"prepublish":"babel src --out-dir dist --ignore /__tests__/","test-unformatted":"babel-tape-runner \"src/**/__tests__/*.js\"","test":"npm 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