start This is obviously how the application should run.
test If this exits with a 0, then tests are good (including code coverage)!
build Used for a CICD set to transpile the TS to JS. This is configured by the tsconfig.json file
test:watch I usually keep 3 console windows open when developing, this is one of them. This automatically runs all tests on ever file save.
build:watch This is my second dev-time console window. Best having tsc running after every save as well.
view:coverage view how often each line of code is being called while testing.
clean This is used for dev-time. When you feel things are out-of-whack, you can run clean to delete all the temporary files generated by other scripts.