webpack.common.js

"use strict";

const path = require("path");
const webpack = require("webpack");

const WebpackNodeExternals = require("webpack-node-externals");
const {CleanWebpackPlugin} = require("clean-webpack-plugin");


// Common webpack configuration / utilities
const projectConstants = require("./webpack.constants.js");


// Global constants
const MODE_PRODUCTION = "production";
const MODE_DEVELOPMENT = "development";


module.exports = {

  // Global constants
  PRODUCTION: MODE_PRODUCTION,
  DEVELOPMENT: MODE_DEVELOPMENT,

  // Common webpack configuration
  getCommonConfiguration: (type) => {

    const outputSuffix = "";

    return {
      target: "node",
      entry: {
        index: "./src/index.tsx"
      },
      output: {
        path: path.join(__dirname, `${projectConstants.outputRoot}`),
        filename: `[name].${outputSuffix && (outputSuffix !== "") ? outputSuffix + "." : ""}js`,
        library: {
          type: "commonjs"
        }
      },
      resolve: {
        extensions: [".tsx", ".ts", ".js"],
        modules: [
          "node_modules"
        ]
      },
      module: {
        rules: [
          {test: /\.tsx$/i, loader: "ts-loader"},
          {test: /\.ts$/i, loader: "ts-loader"},
          {
            test: /\.css$/,
            use: ['style-loader', 'css-loader']
          }
        ]
      },
      externals: [WebpackNodeExternals({
        allowlist: []
      })],
      plugins: [
        new CleanWebpackPlugin({
          dry: false,
          verbose: true,
          cleanOnceBeforeBuildPatterns: projectConstants.outputPaths.map((value, index, array) => path.join(process.cwd(), `${value}`))
        }),

        new webpack.DefinePlugin({
          DEVELOPMENT: JSON.stringify(type === MODE_DEVELOPMENT),
          "process.env.NODE_ENV": JSON.stringify(type)
        })
      ]
    };
  }
};