Migrate the app to typescript

[origranot]

Hey,

I suggest you refactor this project in typescript.

[noams24]

I agree

[DavidMarom]

The purpose of this project is to learn next, and not to write a clean/stable code.
It's hard enough to learn something new, I dont want to add complexity to it.
Every member can start his/her own project in next+TS once they feel confident enough with next itself.

The next project I'll do with next will definitely have TS.