Haul packager updates are very slow to load

Current Behavior

When making a change to my source code and reloading, the app takes 5-10 seconds to actually download the changes and restart the app (this is after a 10 second webpack rebuild).

Expected Behavior

The reloading should be just as fast as it is when using the metro bundler (nearly instantaneous)

Haul Configuration (webpack.haul.js)

import { createWebpackConfig } from 'haul';
import merge from 'webpack-merge';

const ALIASED_MODULES = [
  'react-native-linear-gradient',
  'galmorous-react-native',
  'react-native-svg',
  'lottie-react-native',
  'react-navigation',
];

export default {
  webpack: env => {
    const config = createWebpackConfig(({ platform }) => ({
      entry: ['babel-polyfill', `./index.${platform}.js`],
    }))(env);

    const moduleAliases = ALIASED_MODULES.reduce((acc, moduleName) => {
      acc[moduleName] = path.resolve(`./node_modules/${moduleName}`);
      return acc;
    }, {});

    const customConfig = {
      resolve: {
        symlinks: false,
        alias: moduleAliases,
      },
    };
    // eslint-disable-next-line no-useless-escape
    const customExclude = /node_modules(?!.*[\/\\](react|pretty-format|haul|metro|shared-mobile|glamorous-native|static-container))/;

    // Create a custom webpack configuration based on a deep merge of the default
    // configuration and our custom build settings from above.
    const jsLoader = config.module.rules.find(
      rule => rule.test && rule.test.test('foo.js')
    );

    jsLoader.exclude = customExclude;
    jsLoader.use.find(loader =>
      loader.loader.includes('thread')
    ).options.workerParallelJobs = 50;

    const mergedConfig = merge(config, customConfig);
    return mergedConfig;
  },
};

Your Environment

software	version
Haul	1.0.0-rc.9
react-native	0.57.4
node	10.0.0
npm or yarn	6.4.1

[tido64]

I can try taking a stab at it over the weekend if nobody has picked it up by then.

[thymikee]

Update to the latest RC.12