webpack.config.js

/**
 * @license
 * Copyright 2021 Google LLC
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
/**
 * @fileoverview Configuration for webpack-dev-server, used during development
 * to test Megaplot features under load.
 */

const path = require('path');

const {CleanWebpackPlugin} = require('clean-webpack-plugin');
const HtmlWebpackPlugin = require('html-webpack-plugin');

// Select which demo to run by checking the MEGAPLOT_DEMO env variable.
const TEXT_DEMO = './src/demo/text-demo.ts';
const DEBUG_DEMO = './src/demo/debugging-demo.ts';
const entry = process.env.MEGAPLOT_DEMO === 'text' ? TEXT_DEMO : DEBUG_DEMO;

process.traceDeprecation = true;

module.exports = {
  mode: 'development',
  entry,
  devtool: 'inline-source-map',
  devServer: {
    allowedHosts: 'all',
    host: '0.0.0.0',
    static: {
      directory: './data',
    },
  },
  module: {
    rules: [
      {
        test: /\.ts$/,
        use: 'ts-loader',
        exclude: /node_modules/,
      },
      {
        test: /\.css$/i,
        use: ['style-loader', 'css-loader'],
      },
    ]
  },
  resolve: {extensions: ['.ts', '.js']},
  output: {
    filename: 'megaplot.js',
    path: path.resolve(__dirname, 'dist', 'webpack'),
    libraryTarget: 'umd',
    library: 'megaplot',
  },
  plugins: [
    new CleanWebpackPlugin(),
    new HtmlWebpackPlugin(),
  ],
};