trpc

• rename originalError to cause to align with https://github.com/tc39/proposal-error-cause (#881)
• add @internal/@public/@alpha/@beta-tags to indicate users should use and not (#890)
• add ci checks for node version 12.x (#886)

• @trpc/server: Make createContext() optional (#872)

thanks @joaopaulobdac!

• @trpc/react: Fix prefetchInfiniteQuery with pageParam - #857

Thank you @hypnodron for finding the issue, fixing it, and adding tests! 🙏

• next(): method in server-side middlewares - see docs
• responseMeta(): Better support for custom HTTP headers & status code - see caching docs
• Server-side errors in @trpc/next are now serialized

Upgrade guide for the 99% usecase

1. npx npm-check-updates --filter /@trpc/ -u && yarn
2. Simply update any .middleware() and add return next() at the end. See middleware docs

Breaking changes

• Middlewares will now have to call a next() function that you have to call.
• Reduce TRPCErrors - METHOD_NOT_FOUND removed & PATH_NOT_FOUND renamed to NOT_FOUND (#733)
• Align input and output serialization (#746)
• Remove deprecated httpErrors-helper
• Remove support for ?input to be an array - now assuming a Record<number, unknown>-style dict (changed with backward compat in #669)
• Remove support for POST calls being { input: x } (originally from #671)
• Refactored some internals and removed some unnecessary exports on adapters - minor breaking changes if someone relied on something they shouldn't have :)
• Stricter ErrorFormatter - data has to be a Record<string, unknown>

Minor changes

• Expose httpStatus as part of error object as the default error shape
• httpStatus will be used to determine the actual HTTP Status code set
• Expose TRPCClientError.data as a shortcut to error.shape.data as that's the only one I find myself using
• TRPCError we infer in @trpc/react is now TRPCErrorLike and is serialized for SSR in @trpc/next
• add new method responseMeta() that is triggered before a request ends - both as part of @trpc/next & @trpc/server
  • on @trpc/server receives type, paths, errors, and the unserialized data[] that is going out
  • on @trpc/next it client errors

Thanks to @mmkal, @peterp, @anthonyshort, & @simonedelmann for your feedback!

See https://github.com/trpc/trpc/issues/810

• @trpc/server - inherit stack trace when resolvers failing (#754)

• fix inference of procedures without input (null|undefined rather than unknown) (#697)

• HTTP batching is now the default behavior and is opt-out rather than opt-in (#670)
• splitLink: left/right now aliased as true/false (#689)
• WebSocket server fix: missing initial msgs if slow createContext-fn (#687)

add workaround for a superjson issue when serializing an object that originates from Object.create(null) - #680

• Batching fix: ability to pass undefined to batch inputs without them being type-casted as null - #669
• HTTP requests: flatten POST HTTP requests, skip wrapping in input property - #671

Both of the above changes shape of HTTP-requests, but backwards-compatability and tests are added, in case someone uses tRPC as a public API.

Thanks to @simonedelmann for the idea on #669!

• fix websocket client edge-case where subscriptions aren't resumed on reconnect (#663)

improve websockets support (#595)

• make both dev & prod env for full-stack websocket example
• subscriptions now auto-resubscribe after disconnect and reconnect signal

@trpc/react: trpc.useQuery ignores enabled: false during SSR (#622 / #621)

thanks @hypnodron!

• @trpc/server fix: combined transformers not transforming errors on server (#620)

thanks to @simonedelmann for finding and fixing the issue 🙏

• @trpc/server fix - TRPCError wasn't exported (#606 / #608)

@trpc/next

• no functional change - just refactored the internals of withTRPC() a bit

• add typings for ssg.fetchQuery / ssg.fetchInfiniteQuery (#585)

• Align to JSON-RPC2 (#532)
• Move transformers to router (#545)
• delete useLiveQuery - #568
• delete subscriptions on http
• remove transformer as part of http handler (previously deprecated) #545 / #571
• flatten client.fetchOpts - #570
• withTRPC() refactor - now only accepts 1 argument - #572
• change http req id to null

Upgrade guide

• Update all trpc-deps: npx npm-check-updates --filter /@trpc/ -u && yarn
• Update withTRPC() - see docs
• Update to use router.transform() over transform in http handlers - docs

(broken build - please ignore)

• add deprecation warning for http handler transform (#561)