This illustrates lazy loading modules using the systemjs builder and gulp. The source code is taken directly from the official Angular.io routing tutorial plunker.

Workflow

1. Clone the respository git clone https://github.com/smac89/SystemjsBuilderLazyLoad.git

2. Enter the repository directory cd SystemjsBuilderLazyLoad

3. run npm i

4. run gulp to build the app or PROD=true gulp to build the (semi) bundled app

5. run npm start and the app should be running at localhost:8080