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motion - moving development forward
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"author": {
"email": "beneb.info@gmail.com",
"name": "Ben Briggs",
"url": "http://beneb.info"
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"url": "https://github.com/postcss/postcss-filter-plugins/issues"
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"dependencies": {
"postcss": "^5.0.4",
"uniqid": "^1.0.0"
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"description": "Exclude/warn on duplicated PostCSS plugins.",
"devDependencies": {
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"main": "dist/index.js",
"name": "postcss-filter-plugins",
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"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## Contributing\n\nPull requests are welcome. If you add functionality, then please add unit tests\nto cover it.\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",
"readmeFilename": "README.md",
"repository": {
"type": "git",
"url": "git+https://github.com/postcss/postcss-filter-plugins.git"
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"scripts": {
"prepublish": "babel src --out-dir dist --ignore /__tests__/",
"test": "npm run test-unformatted | tap-spec",
"test-unformatted": "babel-tape-runner \"src/**/__tests__/*.js\""
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"version": "2.0.0"
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