Skip global instance of `createTRPCClient`

[KATT]

The readme currently tells you to create a global tRPC client instance.

This will be problematic when SSRing because the same TRPCClient will be used for all requests.

Instead, create the client in a useState(() => ... callback

Related:

• https://trpc.io/docs/react#3-add-trpc-providers
• https://discord.com/channels/867764511159091230/965891303621656576

[sachinraja]

I did see that in the docs but was unsure of the reason.

This will be problematic when SSRing because the same TRPCClient will be used for all requests.

Could you elaborate on why this is problematic? Also note that this package doesn't do any special SSR logic like @trpc/react does. The only SSR you'll get with this package is through server side suspense.

[KATT]

Examples:

• A request from user A could be accidentally batched with user B
• Setting headers: on the instance will be global for all requests in the app

[sachinraja]

Ah ok that makes sense. I'll fix the readme.