demo/webpack.config.js at master · cacheQL/demo · GitHub

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const path = require('path');
const webpack = require('webpack');
const precss = require('precss');
const autoprefixer = require('autoprefixer');

// const css = require('file.css');
// console.log(process.env.NODE_ENV);
module.exports = {
  entry: './index.js',
  output: {
    path: path.resolve(__dirname, 'build'),
    filename: 'bundle.js'
  },
  mode: process.env.NODE_ENV,
  devServer: {
    publicPath: '/build/',
    port:8080,
    proxy: {
      '/': 'http://localhost:3000'
    }
  },
  module: {
    rules: [
      {
        test: /\.jsx?$/,
        exclude: /node_modules/,
        use: {
          loader: 'babel-loader',
          options: {
            presets: ['@babel/preset-env', '@babel/preset-react']
          }
        }
      },
      {
        test: /\.(png|svg|jpg|gif)$/,
        use: [
          'file-loader',
        ],
      },
      {
        test: /\.(s*)css$/,
        use: [{ loader: 'style-loader' },
        { loader: 'css-loader' },
        {
          loader: 'postcss-loader',
          options: {
            plugins() {
              return [
                precss,
                autoprefixer,
              ];
            },
          },
        },
        { loader: 'sass-loader' },]
      },
    ]
  },
  resolve: {
    extensions: ['.js', '.jsx']
  },
  plugins: [
    new webpack.DefinePlugin({
      'process.env': {
        NODE_ENV: JSON.stringify(process.env.NODE_ENV)
      }
    })
  ]
};