webpack.config.js

var webpack = require("webpack");
var path = require("path");
var argv = require("yargs").argv;
var package = require("./package.json");
var HtmlWebpackPlugin = require("html-webpack-plugin");
var UglifyJsPlugin = require("uglifyjs-webpack-plugin");

var DEBUG = true;
if (process.env.NODE_ENV == "production") DEBUG = false;

// Paths
var basePath = path.resolve(__dirname);
var paths = {
  base: basePath,
  nodeModules: path.join(basePath, "node_modules"),
  app: path.join(basePath, "src"),
  index: path.join(basePath, "src/index.html"),
  build: path.join(basePath, "docs")
};

var wConfig = {
  entry: {
    neosig: path.join(paths.app, "js/index")
  },
  output: {
    filename: "[name]-" + package.version + ".js",
    path: paths.build
  },
  module: {
    rules: [
      {
        test: /\.js$/,
        loader: "eslint-loader",
        enforce: "pre",
        include: path.resolve("src")
      },
      // Enable ES6 support
      {
        test: /\.js?$/,
        exclude: [paths.nodeModules],
        loaders: ["babel-loader"]
      },
      //load sigma as global
      { test: /.*\/sigma.+\.js$/, use: "imports-loader?this=>window" }
    ]
  },
  externals: {
    neo4j: "neo4j"
  },
  plugins: [
    new webpack.NoEmitOnErrorsPlugin(),
    new HtmlWebpackPlugin({
      template: "./src/index.html",
      inject: "head"
    })
  ],
  cache: DEBUG,
  devtool: DEBUG ? "#inline-source-map" : false
};

if (!DEBUG)
  wConfig.plugins.push(
    new webpack.DefinePlugin({
      "process.env": {
        NODE_ENV: process.env.NODE_ENV
      }
    })
  );
if (DEBUG) {
  // Entry points - In production we'll have only the `main.jsx` entry.
  // However in DEBUG, we'll enable Webpacks "Hot Module Replacement"
  // functionality for fast development!
  var entries = {};
  var defaultEntries = [
    "webpack-dev-server/client?http://localhost:8080",
    "webpack/hot/only-dev-server"
  ];
  // Adding default entries
  entries["neosig"] = defaultEntries.concat(wConfig.entry.neosig);
  wConfig.entry = entries;

  // Hot Module Replacement ftw
  wConfig.plugins = wConfig.plugins.concat([
    new webpack.HotModuleReplacementPlugin(),
    new UglifyJsPlugin({
      test: /\.js($|\?)/i,
      uglifyOptions: {
        comments: false
      }
    })
  ]);
  wConfig.devServer = {
    hot: true,
    disableHostCheck: true
  };
}

module.exports = wConfig;