To what extent is writing TypeScript mandatory for users of Fresh?

[frou]

Is it considered a supported usage scenario for a user of Fresh to write all the code in .js & .jsx and never be obliged to write any TypeScript?

[LoganTann]

I think so but as I never properly developed in this particular framework, I can't confirm. (so please take a step back from my answer!!)

Deno has a flag --no-check to disable type checking. You can also add // @ts-nocheck at the beginning of every file you want to disable typescript.

Common uses cases are in my opinion to start the app faster in production when you know everything is type safe, or just because your codebase don't support typescript (due to a lack of architecture design from your side or just a poor typing compatibility with dependancies used).

So my answer would be just to try it. However, chances are you're starting a new project so it's a very good opportunity to learn Typescript. Unless you have any particular reason to not use it, it worth the try. The learning curve is a bit difficult at first but I can confirm it changed in a positive way how I develop code with the js ecosystem.

[marvinhagemeister]

Yes, normal JavaScript is officially supported so you can use .js or .jsx files. The documentation is TS only for the moment and I hope we can add a way to switch between TS and JS in the code snippets there some time in the future. Either way, JS is supported.

[JoshuaWoodsdev]

How can i spin a project up without type?

[marvinhagemeister]

We don't have a non-TS template specifically, but you can bootstrap a Fresh project like you'd usually do, change the extensions and remove the types.