webpack.config.js

const ExtractTextPlugin = require("extract-text-webpack-plugin");
const path = require('path');

const extractSass = new ExtractTextPlugin({
    filename: '[name].css',
    allChunks: true
});

module.exports = [
  {
        name: 'css',
        entry: {
            cmsbundle: './scss/main.scss',
        },
        output: {
            path: path.resolve(__dirname, 'dist/css'),
            filename: '[name].css',
        },
        module: {
            rules: [{
                test: /\.scss$/,
                use: extractSass.extract({
                    use: [{
                        loader: 'css-loader?discardComments'
                    }, {
                        loader: 'sass-loader'
                    }],
                    fallback: 'style-loader'
                })
            }, {
                test: /\.(jpg|gif|png|svg)$/,
                use: [{
                    loader: 'file-loader?emitFile=false&name=../../[path][name].[ext]'
                }]
            }]
        },
        plugins: [
        extractSass
        ]
    }
    ];