gulp command to start the local server and all the watchers. If everything went OK, visit http://localhost:8080.
All the custom scripts are located under
main/static/src/script/ directory and you can update them if needed. Most of the time though it is much better to create more files for better structure of the project.
Create new files (
main/static/src/script/ and your web app should automatically refresh to load the updated files.