update directory structure

src/client/index.ts

@@ -0,0 +1,73 @@
+import type { CreateTRPCClientOptions, inferRouterProxyClient } from '@trpc/client'
+import { createTRPCProxyClient } from '@trpc/client'
+import type {
+  AnyRouter,
+} from '@trpc/server'
+import { createFlatProxy, createRecursiveProxy } from '@trpc/server/shared'
+import { hash } from 'ohash'
+import type { DecoratedProcedureRecord } from './types'
+
+/**
+ * Calculates the key used for `useAsyncData` call
+ */
+export function getQueryKey(
+  path: string,
+  input: unknown,
+): string {
+  return input === undefined ? path : `${path}-${hash(input || '')}`
+}
+
+/**
+ * @internal
+ */
+export function createNuxtProxyDecoration<TRouter extends AnyRouter>(name: string, client: inferRouterProxyClient<TRouter>) {
+  return createRecursiveProxy((opts) => {
+    const args = opts.args
+
+    const pathCopy = [name, ...opts.path]
+
+    // The last arg is for instance `.mutate` or `.query()`
+    // eslint-disable-next-line @typescript-eslint/no-non-null-assertion
+    const lastArg = pathCopy.pop()!
+
+    const path = pathCopy.join('.')
+
+    const [input, asyncDataOptions] = args
+
+    const queryKey = getQueryKey(path, input)
+
+    return useAsyncDataWithError(queryKey, () => (client as any)[path][lastArg](input), asyncDataOptions)
+  })
+}
+
+/**
+ * Custom useAsyncData to add server error to client
+ */
+async function useAsyncDataWithError(queryKey: string, cb: any, asyncDataOptions: any) {
+  // @ts-ignore: nuxt internal
+  const serverError = useState(`error-${queryKey}`, () => null)
+  // @ts-ignore: nuxt internal
+  const { error, data, ...rest } = await useAsyncData(queryKey, cb, asyncDataOptions)
+
+  if (error.value && !serverError.value)
+    serverError.value = error.value as any
+
+  if (data.value)
+    serverError.value = null
+
+  return {
+    ...rest,
+    data,
+    error: serverError,
+  }
+}
+
+export function createTRPCNuxtProxyClient<TRouter extends AnyRouter>(opts: CreateTRPCClientOptions<TRouter>) {
+  const client = createTRPCProxyClient(opts)
+
+  const decoratedClient = createFlatProxy((key) => {
+    return createNuxtProxyDecoration(key, client)
+  }) as DecoratedProcedureRecord<TRouter['_def']['record']>
+
+  return decoratedClient
+}