refactor: type helpers

README.md

@@ -143,6 +143,7 @@ export const onError = (payload: OnErrorPayload<typeof router>) => {
 - [Merging Routers](/recipes/merging-routers.md)
 - [Error Handling](/recipes/error-handling.md)
 - [Error Formatting](/recipes/error-formatting.md)
+- [Inference Helpers](/recipes/inference-helpers.md)
 
 Learn more about tRPC.io [here](https://trpc.io/docs).
 

src/module.ts

@@ -20,7 +20,7 @@ export default defineNuxtModule<ModuleOptions>({
   },
   async setup(options, nuxt) {
     const runtimeDir = fileURLToPath(new URL('./runtime', import.meta.url))
-    nuxt.options.build.transpile.push(runtimeDir, '#build/trpc-client', '#build/trpc-handler')
+    nuxt.options.build.transpile.push(runtimeDir, '#build/trpc-client', '#build/trpc-handler', '#build/trpc-helpers')
 
     const handlerPath = join(nuxt.options.buildDir, 'trpc-handler.ts')
     const trpcOptionsPath = join(nuxt.options.rootDir, 'server/trpc')
@@ -82,7 +82,7 @@ export default defineNuxtModule<ModuleOptions>({
     addTemplate({
       filename: 'trpc-helpers.ts',
       write: true,
-      src: join(runtimeDir, 'helpers.ts'),
+      src: join(runtimeDir, 'helpers.d.ts'),
     })
   },
 })

src/runtime/client.ts

@@ -10,11 +10,12 @@ import type { TRPCClientErrorLike } from '@trpc/client'
 import { objectHash } from 'ohash'
 import { useAsyncData, useState } from '#app'
 import { useClient } from '#build/trpc-client'
+// @ts-expect-error: Resolved by Nuxt
 import type { router } from '~/server/trpc'
 
 type AppRouter = typeof router
 
-type inferProcedures<
+export type inferProcedures<
   TObj extends ProcedureRecord<any, any, any, any, any, any>,
 > = {
   [TPath in keyof TObj]: {
@@ -23,10 +24,10 @@ type inferProcedures<
   };
 }
 
-type TQueries = AppRouter['_def']['queries']
-type TError = TRPCClientErrorLike<AppRouter>
+export type TQueries = AppRouter['_def']['queries']
+export type TError = TRPCClientErrorLike<AppRouter>
 
-type TQueryValues = inferProcedures<AppRouter['_def']['queries']>
+export type TQueryValues = inferProcedures<AppRouter['_def']['queries']>
 
 export async function useAsyncQuery<
   TPath extends keyof TQueryValues & string,

src/runtime/helpers.d.ts

@@ -1,10 +1,8 @@
 import type { inferProcedureInput, inferProcedureOutput, inferSubscriptionOutput } from '@trpc/server'
+// @ts-expect-error: Resolved by Nuxt
 import type { router } from '~/server/trpc'
 
-/**
- * The main router type
- */
-export type AppRouter = typeof router
+type AppRouter = typeof router
 
 /**
  * Enum containing all api query paths