Blitz: Integrate superjson serialization & deserialization to the RPC layer

[flybayer]

What do you want and why?

Switch to use superjson instead of JSON.stringify and result.json().

Possible implementation(s)

Relevant files:

• https://github.com/blitz-js/blitz/blob/canary/packages/core/src/rpc.ts
• https://github.com/blitz-js/blitz/blob/canary/packages/server/src/rpc.ts

Additional context

Related #700

[robertgrzonka]

This sounds interesting, I'd love to take it as second issue if everything works as expected in my previous PR :)

[flybayer]

@robertgrzonka awesome!

[Skn0tt]

While SuperJSON is a lot more capable than normal JSON, there's still some stuff that's not supported:

• Map with non-uniform key types
• Map with complex key types
• ES6 Classes
• potentially more ...

We'll have to address these limitations in the Docs to prevent high expectations to burn. I'd be down to write the Docs for this! :D

[flybayer]

No problem, because they will be able to do a lot more than they can now!! :)

[merelinguist]

@robertgrzonka How’s this going? 😄

[flybayer]

Btw, I just published superjson 1.1.0 which has bug fixes you will want :)

[flybayer]

@robertgrzonka have you started on this? I need it finished within a day, so I can take over if you want!

[Skn0tt]

While SuperJSON is a lot more capable than normal JSON, there's still some stuff that's not supported:

Forget about this - SuperJSON will support all of these in the coming days ^^ Maybe I'm a bit over-confident, but I don't think users will notice any edge cases once Blitz.js properly integrated SuperJSON. No Docs required then ;D

[flybayer]

Hey @robertgrzonka, I'm going ahead and working on this. Hopefully you hadn't started 😬 I'm really sorry about this. I didn't realize I needed this so suddenly this week 😕. Hopefully there's no hard feelings!