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Remove unused css and duplicated css rules.It detects all unused css rules by looking into all assets on the webpack output dir.

This module requires a minimum of Node v6.9.0 and Webpack v4.0.0.

To begin, you'll need to installcss-cleanup-webpack-plugin:

$npm install css-cleanup-webpack-plugin rm-unused-css --save-dev

Then add the plugin to yourwebpack config. For example:

webpack.config.js

constCssCleanupPlugin=require('css-cleanup-webpack-plugin');module.exports={plugins:[newCssCleanupPlugin()]}

And runwebpack via your preferred method.