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Elm.

If there is a back-end API with a spec (GraphQL or OpenAPIv3) you can generate an Elm client for that which makes API calls type-safe and thus very robust.

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Cosigned. And if the backend is yet to be written then put the whole thing on Lamdera.

I'm trying to understand Lamdera, but I dont really get it.

How does it persist data? Does it use WebSockets (and thus push from server)?

I think that's exactly how it works. The whole backend model persists for every user. Your backend model is what would be your DB state in another stack.

So persistence is just text files (that's what I got from scanning through the source).

I'm a bit scared for what that does to state that's shared (instead of that's specific to a user).

Very cool project non the less..

secound, espeicaly together with elm street for generating code from Haskell

I like to skip the backend all together and write the Elm app directly to something like Hasura (GraphQL with authorization on top of PG).

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