webpack.js

/**
 * gulp js
 */

/*eslint-env node, es6*/

'use strict';

const fs = require('fs');
const path = require('path');
const util = require('util');
const log = require('debug')('js');
const edPaths = require('../paths.js');
const webpack = require('webpack');

const JS_SRC_DIR = path.join(process.cwd(), edPaths.themeDir, 'src/js/nda/');
const JS_DIST_DIR = path.join(process.cwd(), edPaths.themeDir, 'dist/js/nda/');

const JS_ENTRIES = (function () {
  log('Reading files from ', JS_SRC_DIR);
  let files = fs.readdirSync(JS_SRC_DIR);
  let entriesObject = files.reduce((entries, filename) => {
    // filter & reduce
    if (path.extname(filename) === '.js'
        && fs.statSync(path.join(JS_SRC_DIR, filename)).isFile()) {
      entries[path.basename(filename, '.js')] = `./${filename}`;
    }
    return entries;
  }, {});
  log(entriesObject);
  return entriesObject;
})();

const JS_PLUGINS = [];

JS_PLUGINS.push(new webpack.BannerPlugin(
  `Built on ${new Date().toString()}`
  //{ raw: true }
));

const sp = require('webpack-split-by-path');
JS_PLUGINS.push(new sp([
  {
    name: 'node_modules',
    path: `${JS_SRC_DIR}node_modules/`
  },
  {
    name: 'root-node_modules',
    path: `${process.cwd()}/config/node_modules/`
  }
]));

JS_PLUGINS.push(new webpack.optimize.CommonsChunkPlugin({
  name:       'main',
  filename:   'main-bundle.min.js',
  chunks:      [
    'main', 'posttype-post', 'home-cat-tag',
  ],
  minChunks:  2,
}));

JS_PLUGINS.push(new webpack.optimize.UglifyJsPlugin({
  compress: {
    warnings: false
  },
  preserveComments: function (currentNode, currentComment) {
    return currentComment.value.indexOf('/*!') > -1;
  }, // not using 'some', since it preserves any comments with jsdoc
}));

const WEBPACK_CONFIG = {
  context:  JS_SRC_DIR,
  entry:    JS_ENTRIES,
  output: {
    path:              JS_DIST_DIR,
    filename:          '[name]-bundle.min.js',
    sourceMapFilename: '[name]-bundle.map',
  },
  module: {
    loaders: [
      { test: /\.hbs$/, loader: 'mustache?minify' },
    ],
  },
  resolve: {
    modulesDirectories: [
      'config/node_modules/',
      // only use local node_modules/, not ed-com/config/node_modules
      `${JS_SRC_DIR}node_modules/`,
      // allow require bower packages
      `${edPaths.themeDir}src/bower/`,
    ],
  },
  // devtool: 'source-map',
  plugins: JS_PLUGINS,
};

const compiler = webpack(WEBPACK_CONFIG);

const buildEntries = (gulpDone) => {
  const webpackDone = (err, stats) => {
    console.log(stats.toString());
    gulpDone(err);
  };
  compiler.run(webpackDone);
};

module.exports = buildEntries;