Question about how to automate generation of .g.dart files.

Hi. I would ask how to make integration of json_serializable more convenient in terms of repository that contains ready to run code base. I think that storing of generated files in repo is not optimal way and better to generate all necessary files on local machine. But new-comers in my project will be confused about how to generate missing files.

So my question is:
Is that possible to automate process of generating missing .g.dart files? Maybe extension for VS Code or something?

My current thoughts is that I can make .sh script and run `dart run build_runner build` but it takes around 20 secs of time each run even if no files missing.