grafana/scripts/webpack/webpack.hot.js

'use strict';

const merge = require('webpack-merge');
const common = require('./webpack.common.js');
const path = require('path');
const webpack = require('webpack');
const HtmlWebpackPlugin = require("html-webpack-plugin");
const HtmlWebpackHarddiskPlugin = require('html-webpack-harddisk-plugin');
const CleanWebpackPlugin = require('clean-webpack-plugin');

module.exports = merge(common, {
  entry: {
    app: [
      'webpack-dev-server/client?http://localhost:3333',
      './public/app/dev.ts',
    ],
  },

  output: {
    path: path.resolve(__dirname, '../../public/build'),
    filename: '[name].[hash].js',
    publicPath: "/public/build/",
    pathinfo: false,
  },

  resolve: {
    extensions: ['.scss', '.ts', '.tsx', '.es6', '.js', '.json', '.svg', '.woff2', '.png', '.html'],
  },

  devtool: 'eval-source-map',

  devServer: {
    publicPath: '/public/build/',
    hot: true,
    port: 3333,
    proxy: {
      '!/public/build': 'http://localhost:3000'
    }
  },

  optimization: {
    removeAvailableModules: false,
    removeEmptyChunks: false,
    splitChunks: false,
  },

  module: {
    rules: [
      {
        test: /\.(j|t)sx?$/,
        exclude: /node_modules/,
        use: [{
          loader: 'babel-loader',
          options: {
            cacheDirectory: true,
            babelrc: false,
            plugins: [
              [require("@rtsao/plugin-proposal-class-properties"), { loose: true }],
              'angularjs-annotate',
              'syntax-dynamic-import', // needed for `() => import()` in routes.ts
              'react-hot-loader/babel'
            ],
            presets: [
              [
                '@babel/preset-env',
                {
                  targets: { browsers: 'last 3 versions' },
                  useBuiltIns: 'entry'
                }
              ],
              '@babel/preset-typescript',
              '@babel/preset-react'
            ],
          }
        }],
      },
      {
        test: /\.scss$/,
        use: [
          "style-loader", // creates style nodes from JS strings
          "css-loader", // translates CSS into CommonJS
          "sass-loader" // compiles Sass to CSS
        ]
      },
      {
        test: /\.(png|jpg|gif|ttf|eot|svg|woff(2)?)(\?[a-z0-9=&.]+)?$/,
        loader: 'file-loader'
      },
    ]
  },

  plugins: [
    new CleanWebpackPlugin('../public/build', { allowExternal: true }),
    new HtmlWebpackPlugin({
      filename: path.resolve(__dirname, '../../public/views/index.html'),
      template: path.resolve(__dirname, '../../public/views/index.template.html'),
      inject: 'body',
      alwaysWriteToDisk: true
    }),
    new HtmlWebpackHarddiskPlugin(),
    new webpack.NamedModulesPlugin(),
    new webpack.HotModuleReplacementPlugin(),
    new webpack.DefinePlugin({
      'GRAFANA_THEME': JSON.stringify(process.env.GRAFANA_THEME || 'dark'),
      'process.env': {
        'NODE_ENV': JSON.stringify('development')
      }
    }),
  ]
});