/**
 * Base webpack config used across other specific configs
 */

import path from "path";
import webpack from "webpack";
import { dependencies as externals } from "./app/package.json";

export default {
  externals: Object.keys(externals || {}),

  module: {
    rules: [{
      test: /\.jsx?$/,
      exclude: /node_modules/,
      use: {
        loader: "babel-loader",
        options: {
          cacheDirectory: true
        }
      }
    }]
  },

  output: {
    path: path.join(__dirname, "app"),
    filename: "bundle.js",
    // https://github.com/webpack/webpack/issues/1114
    libraryTarget: "commonjs2"
  },

  /**
   * Determine the array of extensions that should be used to resolve modules.
   */
  resolve: {
    extensions: [".js", ".jsx", ".json"],
    modules: [
      path.join(__dirname, "app"),
      "node_modules",
    ],
  },

  plugins: [
    new webpack.NamedModulesPlugin(),
  ],
};
