chore: release v0.4.4

Bringing back tRPC Client

.gitignore

@@ -49,3 +49,5 @@ coverage
 Network Trash Folder
 Temporary Items
 .apdisk
+
+.vercel

README.md

@@ -1,12 +1,10 @@
 # tRPC-Nuxt
 
-[![Version](https://img.shields.io/npm/v/trpc-nuxt?style=flat&colorA=000000&colorB=000000)](https://www.npmjs.com/package/trpc-nuxt)
-
 End-to-end typesafe APIs with [tRPC.io](https://trpc.io/) in Nuxt applications.
 
 <p align="center">
   <figure>
-    <img src="https://i.imgur.com/AjmNUxj.gif" alt="Demo" />
+    <img src="https://i.imgur.com/3AZlBZH.gif" alt="Demo" />
     <figcaption>
       <p align="center">
         The client above is <strong>not</strong> importing any code from the server, only its type declarations.
@@ -15,153 +13,9 @@ End-to-end typesafe APIs with [tRPC.io](https://trpc.io/) in Nuxt applications.
   </figure>
 </p>
 
-**⚠️ Currently works on Node v16 until [this issue](https://github.com/trpc/trpc/issues/2420) gets fixed.**
+Docs: https://trpc-nuxt.vercel.app
 
-## Install
-
-```bash
-npm i trpc-nuxt
-```
-
-```ts
-// nuxt.config.ts
-import { defineNuxtConfig } from 'nuxt'
-
-export default defineNuxtConfig({
-  modules: ['trpc-nuxt'],
-  trpc: {
-    baseURL: 'http://localhost:3000', // defaults to http://localhost:3000
-    endpoint: '/trpc', // defaults to /trpc
-  },
-  typescript: {
-    strict: true // required to make input/output types work
-  }
-})
-```
-
-## Usage
-
-Expose your tRPC [routes](https://trpc.io/docs/router) under `~/server/trpc/index.ts`:
-
-```ts
-// ~/server/trpc/index.ts
-import type { inferAsyncReturnType } from '@trpc/server'
-import * as trpc from '@trpc/server'
-import { z } from 'zod' //  yup/superstruct/zod/myzod/custom
-
-export const router = trpc.router()
-  // queries and mutations...
-  .query('getUsers', {
-    async resolve(req) {
-      // use your ORM of choice
-      return await UserModel.all()
-    },
-  })
-  .mutation('createUser', {
-    // validate input with Zod
-    input: z.object({ name: z.string().min(5) }),
-    async resolve(req) {
-      // use your ORM of choice
-      return await UserModel.create({
-        data: req.input,
-      })
-    },
-  })
-```
-
-Use the client like so:
-
-```ts
-const client = useClient() // auto-imported
-
-const users = await client.query('getUsers')
-
-const newUser = await client.mutation('createUser', {
-  name: 'wagmi'
-})
-```
-
-## useAsyncQuery
-
-A thin wrapper around [`useAsyncData`](https://v3.nuxtjs.org/api/composables/use-async-data/) and `client.query()`.
-
-The first argument is a `[path, input]`-tuple - if the `input` is optional, you can omit the, `input`-part.
-
-You'll notice that you get autocompletion on the `path` and automatic typesafety on the `input`.
-
-```ts
-const {
-  data,
-  pending,
-  error,
-  refresh
-} = await useAsyncQuery(['getUser', { id: 69 }], {
-  // pass useAsyncData options here
-  lazy: false
-})
-```
-
-## useClientHeaders
-
-A composable that lets you add additional properties to pass to the tRPC Client. It uses `useState` from [nuxt 3](https://v3.nuxtjs.org/api/composables/use-state).
-
-```ts
-const headers = useClientHeaders()
-
-const { data: token } = await useAsyncQuery(['auth.login', { username, password }])
-
-headers.value.Authorization = `Bearer ${token}`
-
-// All client calls will now include the Authorization header.
-```
-
-## Options
-
-trpc-nuxt accepts the following options exposed under `~/server/trpc/index.ts`:
-
-```ts
-import * as trpc from '@trpc/server'
-import type { inferAsyncReturnType } from '@trpc/server'
-import type { CompatibilityEvent } from 'h3'
-import type { OnErrorPayload } from 'trpc-nuxt/api'
-
-export const router = trpc.router<inferAsyncReturnType<typeof createContext>>()
-
-// Optional
-// https://trpc.io/docs/context
-export const createContext = (event: CompatibilityEvent) => {
-  // ...
-  return {
-    /** context data */
-  }
-}
-
-// Optional
-// https://trpc.io/docs/caching#using-responsemeta--to-cache-responses
-export const responseMeta = () => {
-  // ...
-  return {
-    // { headers: ... }
-  }
-}
-
-// Optional
-// https://trpc.io/docs/error-handling#handling-errors
-export const onError = (payload: OnErrorPayload<typeof router>) => {
-  // Do whatever here like send to bug reporting and stuff
-}
-```
-
-## Recipes
-
-- [Validation](/recipes/validation.md)
-- [Authorization](/recipes/authorization.md)
-- [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).
+For version 3 of this module (tRPC v9, auto-imports, auto handlers), [go here](https://github.com/wobsoriano/trpc-nuxt/tree/v3).
 
 ## Recommended IDE Setup
 

api.d.ts

@@ -1 +0,0 @@
-export * from './dist/runtime/api'

client.d.ts

@@ -0,0 +1 @@
+export * from './dist/client/index'

docs/.gitignore

@@ -0,0 +1 @@
+.vercel

docs/README.md

@@ -0,0 +1 @@
+docs

docs/app.config.ts

@@ -0,0 +1,25 @@
+export default defineAppConfig({
+  docus: {
+    title: 'tRPC Nuxt',
+    image: 'https://og-image.vercel.app/tRPC-Nuxt',
+    alt: 'tRPC-Nuxt cover',
+    url: 'https://trpc-nuxt.vercel.app',
+    debug: false,
+    socials: {
+      github: 'wobsoriano/trpc-nuxt'
+    },
+    aside: {
+      level: 1
+    },
+    footer: {
+      credits: true,
+      icons: [
+        {
+          label: 'NuxtJS',
+          href: 'https://nuxtjs.org',
+          component: 'IconNuxt'
+        }
+      ]
+    }
+  }
+})

docs/content/1.get-started/1.installation.md

@@ -0,0 +1,46 @@
+---
+title: Installation
+description: tRPC-Nuxt provides first class integration with tRPC.
+---
+
+# Installation
+
+::code-group
+
+```bash [pnpm]
+pnpm add @trpc/server @trpc/client trpc-nuxt zod
+```
+
+```bash [npm]
+npm install @trpc/server @trpc/client trpc-nuxt zod
+```
+
+```bash [yarn]
+yarn add @trpc/server @trpc/client trpc-nuxt zod
+```
+
+::
+
+```ts [nuxt.config.ts]
+export default defineNuxtConfig({
+  build: {
+    transpile: ['trpc-nuxt/client']
+  }
+})
+```
+
+#### Why @trpc/server?
+
+For implementing tRPC endpoints and routers.
+
+#### Why @trpc/client?
+
+For making typesafe API calls from your client.
+
+#### Why zod?
+
+Most examples use [Zod](https://github.com/colinhacks/zod) for input validation and tRPC.io highly recommends it, though it isn't required.
+
+## Next Steps
+
+Now that you've installed the required dependencies, you are ready to start building your application.

docs/content/1.get-started/2.usage/1.simple.md

@@ -0,0 +1,118 @@
+---
+title: Simple
+description: tRPC-Nuxt provides first class integration with tRPC.
+---
+
+# Simple Usage
+
+## 1. Create a tRPC router
+
+Initialize your tRPC backend using the `initTRPC` function and create your first router.
+
+::code-group
+
+```ts [server/trpc/trpc.ts]
+/**
+ * This is your entry point to setup the root configuration for tRPC on the server.
+ * - `initTRPC` should only be used once per app.
+ * - We export only the functionality that we use so we can enforce which base procedures should be used
+ *
+ * Learn how to create protected base procedures and other things below:
+ * @see https://trpc.io/docs/v10/router
+ * @see https://trpc.io/docs/v10/procedures
+ */
+import { initTRPC } from '@trpc/server'
+
+const t = initTRPC.create()
+
+/**
+ * Unprotected procedure
+ **/
+export const publicProcedure = t.procedure;
+
+export const router = t.router;
+export const middleware = t.middleware;
+```
+
+```ts [server/api/trpc/[trpc].ts]
+/**
+ * This is the API-handler of your app that contains all your API routes.
+ * On a bigger app, you will probably want to split this file up into multiple files.
+ */
+import { createNuxtApiHandler } from 'trpc-nuxt'
+import { publicProcedure, router } from '~/server/trpc/trpc'
+import { z } from 'zod'
+
+export const appRouter = router({
+  hello: publicProcedure
+    // This is the input schema of your procedure
+    .input(
+      z.object({
+        text: z.string().nullish(),
+      }),
+    )
+    .query(({ input }) => {
+      // This is what you're returning to your client
+      return {
+        greeting: `hello ${input?.text ?? 'world'}`,
+      }
+    }),
+})
+
+// export only the type definition of the API
+// None of the actual implementation is exposed to the client
+export type AppRouter = typeof appRouter;
+
+// export API handler
+export default createNuxtApiHandler({
+  router: appRouter,
+  createContext: () => ({}),
+})
+```
+
+::
+
+## 2. Create tRPC client plugin
+
+Create a strongly-typed plugin using your API's type signature.
+
+```ts [plugins/client.ts]
+import { createTRPCNuxtClient, httpBatchLink } from 'trpc-nuxt/client'
+import type { AppRouter } from '~/server/trpc/routers'
+
+export default defineNuxtPlugin(() => {
+  /**
+   * createTRPCNuxtClient adds a `useQuery` composable
+   * built on top of `useAsyncData`.
+   */
+  const client = createTRPCNuxtClient<AppRouter>({
+    links: [
+      httpBatchLink({
+        url: '/api/trpc',
+      }),
+    ],
+  })
+
+  return {
+    provide: {
+      client,
+    },
+  }
+})
+```
+
+## 3. Make an API request
+
+```vue [pages/index.vue]
+<script setup lang="ts">
+const { $client } = useNuxtApp()
+
+const hello = await $client.hello.useQuery({ text: 'client' })
+</script>
+
+<template>
+  <div>
+    <p>{{ hello.data?.greeting }}</p>
+  </div>
+</template>
+```

docs/content/1.get-started/2.usage/2.recommended.md

@@ -0,0 +1,153 @@
+---
+title: Recommended
+description: tRPC-Nuxt provides first class integration with tRPC.
+---
+
+# Recommended Usage
+
+Recommended but not enforced file structure.
+
+```graphql
+.
+├── server
+│   ├── api
+│   │   └── trpc
+│   │       └── [trpc].ts  # <-- tRPC HTTP handler
+│   │   └── [..]
+│   ├── trpc
+│   │   ├── routers
+│   │   │   ├── index.ts  # <-- main app router
+│   │   │   ├── todo.ts  # <-- sub routers
+│   │   │   └── [..]
+│   │   ├── context.ts   # <-- create app context
+│   │   └── trpc.ts      # <-- procedure helpers
+├── plugins
+│   ├── client.ts  # <-- tRPC client plugin
+└── [..]
+```
+
+## 1. Create a tRPC router
+
+Initialize your tRPC backend using the `initTRPC` function and create your first router.
+
+::code-group
+
+```ts [server/trpc/trpc.ts]
+/**
+ * This is your entry point to setup the root configuration for tRPC on the server.
+ * - `initTRPC` should only be used once per app.
+ * - We export only the functionality that we use so we can enforce which base procedures should be used
+ *
+ * Learn how to create protected base procedures and other things below:
+ * @see https://trpc.io/docs/v10/router
+ * @see https://trpc.io/docs/v10/procedures
+ */
+import { initTRPC } from '@trpc/server'
+import { Context } from '~/server/trpc/context'
+
+const t = initTRPC.context<Context>().create()
+
+/**
+ * Unprotected procedure
+ **/
+export const publicProcedure = t.procedure;
+export const router = t.router;
+export const middleware = t.middleware;
+```
+
+```ts [server/trpc/routers/index.ts]
+import { z } from 'zod'
+import { publicProcedure, router } from '../trpc'
+
+export const appRouter = router({
+  hello: publicProcedure
+    .input(
+      z.object({
+        text: z.string().nullish(),
+      }),
+    )
+    .query(({ input }) => {
+      return {
+        greeting: `hello ${input?.text ?? 'world'}`,
+      }
+    }),
+})
+
+// export type definition of API
+export type AppRouter = typeof appRouter
+```
+
+```ts [server/api/trpc/[trpc].ts]
+import { createNuxtApiHandler } from 'trpc-nuxt'
+import { appRouter } from '~/server/trpc/routers'
+import { createContext } from '~/server/trpc/context'
+
+// export API handler
+export default createNuxtApiHandler({
+  router: appRouter,
+  createContext,
+})
+```
+
+```ts [server/trpc/context.ts]
+import { inferAsyncReturnType } from '@trpc/server'
+
+/**
+ * Creates context for an incoming request
+ * @link https://trpc.io/docs/context
+ */
+export const createContext = () => {}
+
+export type Context = inferAsyncReturnType<typeof createContext>;
+```
+
+::
+
+::alert{type=info}
+If you need to split your router into several subrouters, you can implement them in the `server/trpc/routers` directory and import and [merge them](https://trpc.io/docs/v10/merging-routers) to a single root `appRouter`.
+::
+
+## 2. Create tRPC client plugin
+
+Create a strongly-typed plugin using your API's type signature.
+
+```ts [plugins/client.ts]
+import { createTRPCNuxtClient, httpBatchLink } from 'trpc-nuxt/client'
+import type { AppRouter } from '~/server/trpc/routers'
+
+export default defineNuxtPlugin(() => {
+  /**
+   * createTRPCNuxtClient adds a `useQuery` composable
+   * built on top of `useAsyncData`.
+   */
+  const client = createTRPCNuxtClient<AppRouter>({
+    links: [
+      httpBatchLink({
+        url: '/api/trpc',
+      }),
+    ],
+  })
+
+  return {
+    provide: {
+      client,
+    },
+  }
+})
+```
+
+## 3. Make an API request
+
+```vue [pages/index.vue]
+<script setup lang="ts">
+const { $client } = useNuxtApp()
+
+const hello = await $client.hello.useQuery({ text: 'client' })
+</script>
+
+<template>
+  <div>
+    <p>{{ hello.data?.greeting }}</p>
+  </div>
+</template>
+```

docs/content/1.get-started/3.client.md

@@ -0,0 +1,53 @@
+---
+title: Client
+description: tRPC-Nuxt provides first class integration with tRPC.
+---
+
+# Nuxt client
+
+The magic of tRPC is making strongly typed API calls without relying on code generation. With full-stack TypeScript projects, you can directly import types from the server into the client! This is a vital part of how tRPC works.
+
+## Initialize a tRPC client
+
+Create a typesafe client via a Nuxt [plugin](https://nuxt.com/docs/guide/directory-structure/plugins) with the `createTRPCNuxtClient` method from `trpc-nuxt/client`, and add a `links` array with a [terminating link](https://trpc.io/docs/links#the-terminating-link). If you want to learn more about tRPC links, check out the docs [here](https://trpc.io/docs/links):
+
+::alert{type="info"}
+`createTRPCNuxtClient` extends [createTRPCProxyClient](https://trpc.io/docs/vanilla#initialize-a-trpc-client) and adds a `useQuery` method built on top of [useAsyncData](https://nuxt.com/docs/api/composables/use-async-data).
+::
+
+```ts [plugins/client.ts]
+import { createTRPCNuxtClient, httpBatchLink } from 'trpc-nuxt/client'
+import type { AppRouter } from '~/server/trpc/routers'
+
+export default defineNuxtPlugin(() => {
+  const client = createTRPCNuxtClient<AppRouter>({
+    links: [
+      httpBatchLink({
+        url: '/api/trpc',
+      }),
+    ],
+  })
+
+  return {
+    provide: {
+      client,
+    },
+  }
+})
+```
+
+As you can see, we passed `AppRouter` as a type argument of `createTRPCNuxtClient`. This returns a strongly typed `client` instance, a proxy that mirrors the structure of your `AppRouter` on the client:
+
+```vue [pages/index.vue]
+<script setup lang="ts">
+const { $client } = useNuxtApp()
+
+const getUser = await $client.getUser.useQuery('id_bilbo');
+// => { data: { id: 'id_bilbo', name: 'Bilbo' }, pending: false, error: false };
+
+const bilbo = await $client.getUser.query('id_bilbo');
+// => { id: 'id_bilbo', name: 'Bilbo' };
+const frodo = await $client.createUser.mutate({ name: 'Frodo' });
+// => { id: 'id_frodo', name: 'Frodo' };
+</script>
+```

docs/content/1.get-started/4.links/1.httpLink.md

@@ -0,0 +1,58 @@
+---
+title: HTTP Link
+description: httpLink is a terminating link that sends a tRPC operation to a tRPC procedure over HTTP.
+---
+
+# HTTP Link
+
+`httpLink` is a [terminating link](https://trpc.io/docs/links#the-terminating-link) that sends a tRPC operation to a tRPC procedure over HTTP.
+
+`httpLink` supports both POST and GET requests.
+
+::alert{type="info"}
+`httpLink` imported from `trpc-nuxt/client` is a convenience wrapper around the original `httpLink` that replaces regular `fetch` with a [`$fetch`](https://nuxt.com/docs/api/utils/dollarfetch) from Nuxt. It also sets the default headers using [`useRequestHeaders`](https://nuxt.com/docs/api/composables/use-request-headers#userequestheaders).
+::
+
+## Usage
+
+You can import and add the `httpLink` to the `links` array as such:
+
+```ts
+import { createTRPCNuxtClient, httpLink } from 'trpc-nuxt/client'
+import type { AppRouter } from '~/server/trpc/routers'
+
+const client = createTRPCNuxtClient<AppRouter>({
+  links: [
+    httpLink({
+      url: '/api/trpc',
+    }),
+  ],
+})
+```
+
+## `httpLink` Options
+
+The `httpLink` function takes an options object that has the `HTTPLinkOptions` shape.
+
+```ts
+export interface HTTPLinkOptions {
+  url: string;
+  /**
+   * Select headers to pass to `useRequestHeaders`.
+   */
+  pickHeaders?: string[];
+  /**
+   * Add ponyfill for fetch.
+   */
+  fetch?: typeof fetch;
+  /**
+   * Add ponyfill for AbortController
+   */
+  AbortController?: typeof AbortController | null;
+  /**
+   * Headers to be set on outgoing requests or a callback that of said headers
+   * @link http://trpc.io/docs/v10/header
+   */
+  headers?: HTTPHeaders | (() => HTTPHeaders | Promise<HTTPHeaders>);
+}
+```

docs/content/1.get-started/4.links/2.httpBatchLink.md

@@ -0,0 +1,88 @@
+---
+title: HTTP Batch Link
+description: httpBatchLink is a terminating link that batches an array of individual tRPC operations into a single HTTP request that's sent to a single tRPC procedure.
+---
+
+# HTTP Batch Link
+
+`httpBatchLink` is a [terminating link](https://trpc.io/docs/links#the-terminating-link) that batches an array of individual tRPC operations into a single HTTP request that's sent to a single tRPC procedure.
+
+::alert{type="info"}
+`httpBatchLink` imported from `trpc-nuxt/client` is a convenience wrapper around the original `httpBatchLink` that replaces regular `fetch` with a [`$fetch`](https://nuxt.com/docs/api/utils/dollarfetch) from Nuxt. It also sets the default headers using [`useRequestHeaders`](https://nuxt.com/docs/api/composables/use-request-headers#userequestheaders).
+::
+
+## Usage
+
+You can import and add the `httpBatchLink` to the `links` array as such:
+
+```ts
+import { createTRPCNuxtClient, httpBatchLink } from 'trpc-nuxt/client'
+import type { AppRouter } from '~/server/trpc/routers'
+
+const client = createTRPCNuxtClient<AppRouter>({
+  links: [
+    httpBatchLink({
+      url: '/api/trpc',
+    }),
+  ],
+})
+```
+
+After that, you can make use of batching by setting all your procedures in a `Promise.all`. The code below will produce exactly one HTTP request and on the server exactly `one` database query:
+
+```ts
+const somePosts = await Promise.all([
+  $client.post.byId.query(1);
+  $client.post.byId.query(2);
+  $client.post.byId.query(3);
+])
+```
+
+## `httpBatchLink` Options
+
+The `httpBatchLink` function takes an options object that has the `HTTPBatchLinkOptions` shape.
+
+```ts
+export interface HttpBatchLinkOptions extends HTTPLinkOptions {
+  maxURLLength?: number;
+}
+
+export interface HTTPLinkOptions {
+  url: string;
+  /**
+   * Select headers to pass to `useRequestHeaders`.
+   */
+  pickHeaders?: string[];
+  /**
+   * Add ponyfill for fetch.
+   */
+  fetch?: typeof fetch;
+  /**
+   * Add ponyfill for AbortController
+   */
+  AbortController?: typeof AbortController | null;
+  /**
+   * Headers to be set on outgoing requests or a callback that of said headers
+   * @link http://trpc.io/docs/v10/header
+   */
+  headers?: HTTPHeaders | (() => HTTPHeaders | Promise<HTTPHeaders>);
+}
+```
+
+## Setting a maximum URL length
+
+When sending batch requests, sometimes the URL can become too large causing HTTP errors like [413 Payload Too Large](https://developer.mozilla.org/en-US/docs/Web/HTTP/Status/413), [414 URI Too Long](https://developer.mozilla.org/en-US/docs/Web/HTTP/Status/414), and [404 Not Found](https://developer.mozilla.org/en-US/docs/Web/HTTP/Status/404). The `maxURLLength` option will limit the number of requests that can be sent together in a batch.
+
+```ts
+import { createTRPCNuxtClient, httpBatchLink } from 'trpc-nuxt/client';
+import type { AppRouter } from '~/server/trpc/routers'
+
+const client = createTRPCNuxtClient<AppRouter>({
+  links: [
+    httpBatchLink({
+      url: '/api/trpc',
+      maxURLLength: 2083, // a suitable size
+    }),
+  ],
+});
+```

docs/content/1.get-started/5.tips/1.composables.md

@@ -0,0 +1,44 @@
+---
+title: Composables
+---
+
+# Composables
+
+It is often useful to wrap functionality of your `@trpc/client` api within other functions. For this purpose, it's necessary to be able to infer input types and output types generated by your `@trpc/server` router.
+
+::alert{type="info"}
+[createTRPCNuxtClient](/get-started/client/create) adds a `useQuery` method built on top of [useAsyncData](https://nuxt.com/docs/api/composables/use-async-data/).
+::
+
+## Inference Helpers
+
+`@trpc/server` exports the following helper types to assist with inferring these types from the `AppRouter` exported by your `@trpc/server` router:
+
+- `inferRouterInputs<TRouter>`
+- `inferRouterOutputs<TRouter>`
+
+Let's assume we have this example query wrapped within Nuxt's [useAsyncData](https://v3.nuxtjs.org/api/composables/use-async-data/):
+
+```ts
+const { data, error } = await useAsyncData(() => $client.todo.getTodos.query())
+```
+
+We can wrap this in a composable and also set the client error types:
+
+```ts [composables/useGetTodos.ts]
+import { TRPCClientError } from '@trpc/client'
+import type { inferRouterOutputs } from '@trpc/server'
+import type { AppRouter } from '@/server/trpc/routers'
+
+type RouterOutput = inferRouterOutputs<AppRouter>
+type GetTodosOutput = RouterOutput['todo']['getTodos']
+
+type ErrorOutput = TRPCClientError<AppRouter>
+
+export default function useGetTodos() {
+  const { $client } = useNuxtApp()
+  return useAsyncData<GetTodosOutput, ErrorOutput>(() => $client.todo.getTodos.query())
+}
+```
+
+Now, we have a fully-typed composable.

docs/content/1.get-started/5.tips/2.headers.md

@@ -0,0 +1,44 @@
+---
+title: Headers
+---
+
+# Headers
+
+We can use the built-in [useRequestHeaders](https://v3.nuxtjs.org/api/composables/use-request-headers/) to set outgoing request headers:
+
+::alert{type="info"}
+[createTRPCNuxtClient](/get-started/client/create) has this feature by default.
+::
+
+```ts [plugins/client.ts]
+export default defineNuxtPlugin(() => {
+  const headers = useRequestHeaders()
+
+  const client = createTRPCProxyClient<AppRouter>({
+    links: [
+      httpBatchLink({
+        // headers need to be a function so it gets called dynamically
+        // every HTTP request
+        headers() {
+          // You can add more custom headers here
+          return headers
+        }
+      }),
+    ],
+  })
+
+  return {
+    provide: {
+      client,
+    },
+  }
+})
+```
+
+```ts [server/trpc/context.ts]
+export function createContext (event: H3Event) {
+  console.log('cookies', parseCookies(event))
+
+  return {}
+}
+```

docs/content/1.get-started/5.tips/3.authorization.md

@@ -0,0 +1,103 @@
+---
+title: Authorization
+---
+
+# Authorization
+
+The `createContext` function is called for each incoming request so here you can add contextual information about the calling user from the request object.
+
+::alert{type="warning"}
+Before you can access request headers in any context or middleware, you need to set the outgoing request headers. See [here](/get-started/tips/headers).
+::
+
+## Create context from request headers
+
+```ts [server/trpc/context.ts]
+import { inferAsyncReturnType } from '@trpc/server'
+import { decodeAndVerifyJwtToken } from './somewhere/in/your/app/utils'
+
+export async function createContext(event: H3Event) {
+  // Create your context based on the request object
+  // Will be available as `ctx` in all your resolvers
+
+  // This is just an example of something you might want to do in your ctx fn
+  const authorization = getRequestHeader(event, 'authorization')
+  async function getUserFromHeader() {
+    if (authorization) {
+      const user = await decodeAndVerifyJwtToken(authorization.split(' ')[1])
+      return user
+    }
+    return null
+  }
+  const user = await getUserFromHeader()
+
+  return {
+    user,
+  }
+}
+type Context = inferAsyncReturnType<typeof createContext>
+```
+
+## Option 1: Authorize using resolver
+
+```ts
+import { TRPCError, initTRPC } from '@trpc/server'
+import type { Context } from '../context'
+
+export const t = initTRPC.context<Context>().create()
+
+const appRouter = t.router({
+  // open for anyone
+  hello: t.procedure
+    .input(z.string().nullish())
+    .query(({ input, ctx }) => `hello ${input ?? ctx.user?.name ?? 'world'}`),
+  // checked in resolver
+  secret: t.procedure.query(({ ctx }) => {
+    if (!ctx.user) {
+      throw new TRPCError({ code: 'UNAUTHORIZED' })
+    }
+    return {
+      secret: 'sauce',
+    }
+  }),
+})
+```
+
+## Option 2: Authorize using middleware
+
+```ts
+import { TRPCError, initTRPC } from '@trpc/server'
+
+export const t = initTRPC.context<Context>().create()
+
+const isAuthed = t.middleware(({ next, ctx }) => {
+  if (!ctx.user?.isAdmin) {
+    throw new TRPCError({ code: 'UNAUTHORIZED' })
+  }
+  return next({
+    ctx: {
+      user: ctx.user,
+    },
+  })
+})
+
+// you can reuse this for any procedure
+export const protectedProcedure = t.procedure.use(isAuthed)
+
+t.router({
+  // this is accessible for everyone
+  hello: t.procedure
+    .input(z.string().nullish())
+    .query(({ input, ctx }) => `hello ${input ?? ctx.user?.name ?? 'world'}`),
+  admin: t.router({
+    // this is accessible only to admins
+    secret: protectedProcedure.query(({ ctx }) => {
+      return {
+        secret: 'sauce',
+      }
+    }),
+  }),
+})
+```
+
+This page is entirely based on [authorization docs](https://trpc.io/docs/v10/authorization) of tRPC with a minimal change made to work with Nuxt.

docs/content/1.get-started/5.tips/4.server-side-calls.md

@@ -0,0 +1,84 @@
+---
+title: Server Side Calls
+---
+
+# Server Side Calls
+
+You may need to call your procedure(s) directly from the server, `createCaller()` function returns you an instance of `RouterCaller` able to execute queries and mutations.
+
+## Input query example
+
+We create the router with a input query and then we call the asynchronous `greeting` procedure to get the result.
+
+::code-group
+
+```ts [server/trpc/trpc.ts]
+import { initTRPC } from '@trpc/server'
+import { z } from 'zod'
+ 
+const t = initTRPC.create()
+ 
+export const router = t.router({
+  // Create procedure at path 'greeting'
+  greeting: t.procedure
+    .input(z.object({ name: z.string() }))
+    .query(({ input }) => `Hello ${input.name}`),
+})
+```
+
+```ts [server/api/greeting.ts]
+import { router } from '@/server/trpc/trpc'
+
+export default eventHandler(async (event) => {
+  const { name } = getQuery(event)
+  const caller = router.createCaller({})
+
+  const greeting = await caller.greeting({ name })
+
+  return {
+    greeting
+  }
+})
+```
+
+::
+
+## Mutation example
+
+We create the router with a mutation and then we call the asynchronous `post` procedure to get the result.
+
+::code-group
+
+```ts [server/trpc/trpc.ts]
+import { initTRPC } from '@trpc/server'
+import { z } from 'zod'
+ 
+const posts = ['One', 'Two', 'Three']
+ 
+const t = initTRPC.create()
+export const router = t.router({
+  post: t.router({
+    add: t.procedure.input(z.string()).mutation(({ input }) => {
+      posts.push(input)
+      return posts
+    }),
+  }),
+})
+```
+
+```ts [server/api/post.ts]
+import { router } from '@/server/trpc/trpc'
+
+export default eventHandler(async (event) => {
+  const body = await getBody(event)
+  const caller = router.createCaller({})
+
+  const post = await caller.post.add(body.post)
+
+  return {
+    post
+  }
+})
+```
+
+::

docs/content/1.get-started/5.tips/5.aborting-procedures.md

@@ -0,0 +1,24 @@
+---
+title: Aborting Procedures
+---
+
+# Aborting Procedures
+
+tRPC adheres to the industry standard when it comes to aborting procedures. All you have to do is pass an `AbortSignal` to the query-options and then call its parent `AbortController`'s `abort` method.
+
+```ts [composables/useGetTodo.ts]
+export default function useGetTodo(id: number) {
+  const { $client } = useNuxtApp()
+  const ac = new AbortController()
+
+  onScopeDispose(() => {
+    ac.abort()
+  })
+  
+  return useAsyncData(() => {
+    return $client.todo.getTodo.query(id, {
+      signal: ac.signal
+    })
+  })
+}
+```

docs/content/1.get-started/index.md

@@ -0,0 +1,4 @@
+---
+navigation: false
+redirect: /get-started/installation
+---

docs/content/2.examples/1.basic.md

@@ -0,0 +1,6 @@
+---
+title: Basic
+description: tRPC-Nuxt provides first class integration with tRPC.
+---
+
+# Basic Example

docs/content/2.examples/2.multiple-routers.md

@@ -0,0 +1,6 @@
+---
+title: Multiple Routers
+description: tRPC-Nuxt provides first class integration with tRPC.
+---
+
+# Multi Routers

docs/content/index.md

@@ -0,0 +1,31 @@
+---
+title: "tRPC Nuxt"
+description: "End-to-end typesafe APIs in Nuxt applications."
+navigation: false
+layout: page
+---
+
+::block-hero
+---
+cta:
+  - Get Started
+  - /get-started/installation
+secondary:
+  - Star on GitHub ->
+  - https://github.com/wobsoriano/trpc-nuxt
+snippet: npm install trpc-nuxt
+---
+
+#title
+tRPC [Nuxt]{.text-primary-500}
+
+#description
+End-to-end typesafe APIs in Nuxt applications. 
+
+#extra
+  ::list
+  - Automatic typesafety 
+  - Snappy DX
+  - Autocompletion on the client, for inputs, outputs and errors
+  ::
+::

docs/nuxt.config.ts

@@ -0,0 +1,22 @@
+export default defineNuxtConfig({
+  app: {
+    pageTransition: false,
+    layoutTransition: false
+  },
+  modules: ['@nuxtlabs/github-module'],
+  extends: process.env.DOCUS_THEME_PATH || '@nuxt-themes/docus',
+  github: {
+    owner: 'wobsoriano',
+    repo: 'trpc-nuxt',
+    branch: 'next'
+  },
+  colorMode: {
+    preference: 'dark'
+  },
+  build: {
+    transpile: [/content-edge/, /github-module/]
+  },
+  nitro: {
+    preset: 'vercel'
+  }
+})

docs/package.json

@@ -0,0 +1,17 @@
+{
+  "name": "docs",
+  "description": "Docs for TRPC-Nuxt",
+  "scripts": {
+    "dev": "nuxi dev",
+    "build": "nuxi build",
+    "generate": "nuxi build",
+    "preview": "nuxi preview"
+  },
+  "dependencies": {
+    "nuxt": "^3.0.0"
+  },
+  "devDependencies": {
+    "@nuxt-themes/docus": "^1.1.10",
+    "@nuxtlabs/github-module": "^1.5.4"
+  }
+}

docs/tokens.config.ts

@@ -0,0 +1,18 @@
+import { defineTheme } from 'pinceau'
+
+export default defineTheme({
+  colors: {
+    primary: {
+      50: '#BFEDFC',
+      100: '#B0E9FB',
+      200: '#93DEFA',
+      300: '#76D4F9',
+      400: '#58C8F7',
+      500: '#3BBBF6',
+      600: '#0BA6F3',
+      700: '#0981C2',
+      800: '#075E91',
+      900: '#043D61'
+    }
+  }
+})

docs/tsconfig.json

@@ -0,0 +1,3 @@
+{
+  "extends": "./.nuxt/tsconfig.json"
+}

package.json

@@ -1,66 +1,83 @@
 {
   "name": "trpc-nuxt",
+  "description": "End-to-end typesafe APIs in Nuxt applications.",
   "type": "module",
-  "version": "0.2.7",
-  "packageManager": "pnpm@7.5.0",
+  "packageManager": "pnpm@7.18.2",
+  "version": "0.4.4",
   "license": "MIT",
-  "main": "./dist/module.cjs",
-  "types": "./dist/types.d.ts",
+  "sideEffects": false,
   "exports": {
-    "./package.json": "./package.json",
     ".": {
-      "import": "./dist/module.mjs",
-      "require": "./dist/module.cjs"
+      "require": "./dist/index.cjs",
+      "import": "./dist/index.mjs"
     },
-    "./api": {
-      "import": "./dist/runtime/api.mjs",
-      "types": "./dist/runtime/api.d.ts"
+    "./client": {
+      "types": "./dist/client/index.d.ts",
+      "require": "./dist/client/index.cjs",
+      "import": "./dist/client/index.mjs"
     }
   },
+  "main": "./dist/index.mjs",
+  "module": "./dist/index.mjs",
+  "types": "./dist/index.d.ts",
   "files": [
     "dist",
-    "*.d.ts"
+    "client.d.ts"
   ],
   "scripts": {
-    "prepublishOnly": "nr build",
-    "build": "nuxt-module-build",
-    "play": "nr build && nuxi dev playground",
-    "build:playground": "nuxi build playground",
+    "dev": "concurrently \"pnpm build -- --watch\" \"pnpm --filter playground dev\"",
+    "dev:prepare": "pnpm build && nuxt prepare playground",
+    "prepublishOnly": "pnpm build",
+    "build": "tsup",
     "lint": "eslint .",
     "lint:fix": "eslint . --fix",
-    "release": "bumpp --commit --push --tag && pnpm publish",
-    "prepare": "nuxi prepare playground"
+    "release": "bumpp && npm publish"
+  },
+  "peerDependencies": {
+    "@trpc/client": "^10.0.0",
+    "@trpc/server": "^10.0.0"
   },
   "dependencies": {
-    "@nuxt/kit": "3.0.0-rc.8",
-    "@trpc/client": "^9.27.1",
-    "@trpc/server": "^9.27.1",
-    "dedent": "^0.7.0",
-    "defu": "^6.0.0",
-    "h3": "^0.7.10",
-    "ohash": "^0.1.5",
-    "pathe": "^0.3.0",
-    "ufo": "^0.8.5"
+    "h3": "^1.0.2",
+    "ofetch": "^1.0.0",
+    "ohash": "^1.0.0",
+    "ufo": "^1.0.0"
   },
   "devDependencies": {
-    "@antfu/eslint-config": "^0.23.1",
-    "@antfu/ni": "^0.16.2",
-    "@nuxt/module-builder": "^0.1.7",
-    "@types/dedent": "^0.7.0",
-    "bumpp": "^7.2.0",
-    "eslint": "^8.14.0",
-    "nuxt": "3.0.0-rc.8",
-    "pnpm": "^7.5.0",
-    "trpc-nuxt": "workspace:*",
-    "zod": "^3.16.0"
+    "@nuxt/eslint-config": "^0.1.1",
+    "@trpc/client": "^10.5.0",
+    "@trpc/server": "^10.5.0",
+    "bumpp": "^8.2.1",
+    "concurrently": "^7.5.0",
+    "eslint": "^8.25.0",
+    "tsup": "6.4.0",
+    "typescript": "^4.7.4"
   },
   "eslintConfig": {
-    "extends": "@antfu",
+    "extends": [
+      "@nuxt/eslint-config"
+    ],
     "rules": {
-      "no-console": "warn"
+      "@typescript-eslint/no-unused-vars": [
+        "off"
+      ],
+      "vue/multi-word-component-names": "off",
+      "vue/no-multiple-template-root": "off"
     }
   },
-  "volta": {
-    "node": "16.14.2"
+  "eslintIgnore": [
+    "*.json",
+    "node_modules",
+    "*.md",
+    "dist",
+    ".output"
+  ],
+  "pnpm": {
+    "overrides": {
+      "nuxt": "3.0.0"
+    }
+  },
+  "engines": {
+    "node": "^16.13.0 || ^18.12.0"
   }
 }

playground/nuxt.config.ts

@@ -1,13 +1,6 @@
-import { defineNuxtConfig } from 'nuxt'
-import Module from '../src/module'
-
 // https://v3.nuxtjs.org/api/configuration/nuxt.config
 export default defineNuxtConfig({
-  modules: [Module],
-  runtimeConfig: {
-    baseURL: 'http://localhost:3000',
-  },
-  typescript: {
-    strict: true,
-  },
+  build: {
+    transpile: ['trpc-nuxt/client']
+  }
 })

playground/package.json

@@ -1,4 +1,21 @@
 {
   "name": "playground",
-  "private": true
+  "private": true,
+  "scripts": {
+    "build": "nuxt build",
+    "dev": "nuxt dev",
+    "generate": "nuxt generate",
+    "preview": "nuxt preview",
+    "postinstall": "nuxt prepare"
+  },
+  "dependencies": {
+    "@trpc/client": "^10.5.0",
+    "@trpc/server": "^10.5.0",
+    "superjson": "^1.11.0",
+    "trpc-nuxt": "workspace:*",
+    "zod": "^3.19.1"
+  },
+  "devDependencies": {
+    "nuxt": "^3.0.0"
+  }
 }

playground/pages/cookie.vue

@@ -1,19 +0,0 @@
-<script setup lang="ts">
-const counter = useCookie('counter')
-counter.value = counter.value || Math.round(Math.random() * 1000)
-</script>
-
-<template>
-  <div>
-    <h1> Counter: {{ counter || '-' }}</h1>
-    <button @click="counter = null">
-      reset
-    </button>
-    <button @click="counter--">
-      -
-    </button>
-    <button @click="counter++">
-      +
-    </button>
-  </div>
-</template>

playground/pages/index.vue

@@ -1,55 +1,54 @@
 <script setup lang="ts">
-const client = useClient()
-const headers = useClientHeaders()
-const { data: todos, pending, error, refresh } = await useAsyncQuery(['getTodos'])
-
-const addHeader = () => {
-  headers.value.authorization = 'Bearer abcdefghijklmnop'
-  console.log(headers.value)
-}
+const { $client } = useNuxtApp()
 
 const addTodo = async () => {
   const title = Math.random().toString(36).slice(2, 7)
 
   try {
-    const result = await client.mutation('addTodo', {
+    const x = await $client.todo.addTodo.mutate({
       id: Date.now(),
       userId: 69,
       title,
-      completed: false,
+      completed: false
     })
-    console.log('Todo: ', result)
-  }
-  catch (e) {
+    console.log(x)
+  } catch (e) {
     console.log(e)
   }
 }
+
+const { data: todos, pending, error, refresh } = await $client.todo.getTodos.useQuery()
 </script>
 
 <template>
-  <div v-if="pending">
-    Loading...
-  </div>
-  <div v-else-if="error?.data?.code">
-    Error: {{ error.data.code }}
-  </div>
-  <div v-else-if="todos">
-    <ul>
-      <li v-for="t in todos.slice(0, 10)" :key="t.id">
-        <NuxtLink :class="{ completed: t.completed }" :to="`/todo/${t.id}`">
-          Title: {{ t.title }}
-        </NuxtLink>
-      </li>
-    </ul>
-    <button @click="addTodo">
-      Add Todo
-    </button>
-    <button @click="() => refresh()">
-      Refresh
-    </button>
-    <button @click="addHeader">
-      Add header
-    </button>
+  <div>
+    <div v-if="pending">
+      Loading...
+    </div>
+    <div v-else-if="error?.data?.code">
+      Error: {{ error.data.code }}
+    </div>
+    <div v-else>
+      <ul>
+        <li
+          v-for="t in todos?.slice(0, 10)"
+          :key="t.id"
+        >
+          <NuxtLink
+            :class="{ completed: t.completed }"
+            :to="`/todo/${t.id}`"
+          >
+            Title: {{ t.title }}
+          </NuxtLink>
+        </li>
+      </ul>
+      <button @click="addTodo">
+        Add Todo
+      </button>
+      <button @click="() => refresh()">
+        Refresh
+      </button>
+    </div>
   </div>
 </template>
 

playground/pages/todo/[id].vue

@@ -1,6 +1,7 @@
 <script setup lang="ts">
 const route = useRoute()
-const { data: todo, pending, error } = await useAsyncQuery(['getTodo', Number(route.params.id)])
+const { $client } = useNuxtApp()
+const { data: todo, pending, error } = await useAsyncData(() => $client.todo.getTodo.query(Number(route.params.id)))
 </script>
 
 <template>
@@ -11,8 +12,8 @@ const { data: todo, pending, error } = await useAsyncQuery(['getTodo', Number(ro
     {{ error.data.code }}
   </div>
   <div v-else>
-    ID: {{ todo.id }} <br>
-    Title: {{ todo.title }} <br>
-    Completed: {{ todo.completed }}
+    ID: {{ todo?.id }} <br>
+    Title: {{ todo?.title }} <br>
+    Completed: {{ todo?.completed }}
   </div>
 </template>

playground/plugins/trpc-client.ts

@@ -0,0 +1,25 @@
+import { loggerLink } from '@trpc/client'
+import superjson from 'superjson'
+import { createTRPCNuxtClient, httpBatchLink } from 'trpc-nuxt/client'
+import type { AppRouter } from '~~/server/trpc/routers'
+
+export default defineNuxtPlugin(() => {
+  const client = createTRPCNuxtClient<AppRouter>({
+    transformer: superjson,
+    links: [
+      // adds pretty logs to your console in development and logs errors in production
+      loggerLink({
+        enabled: opts =>
+          process.env.NODE_ENV === 'development' ||
+          (opts.direction === 'down' && opts.result instanceof Error)
+      }),
+      httpBatchLink()
+    ]
+  })
+
+  return {
+    provide: {
+      client
+    }
+  }
+})

playground/server/api/trpc/[trpc].ts

@@ -0,0 +1,23 @@
+import { createNuxtApiHandler } from 'trpc-nuxt'
+import { appRouter } from '@/server/trpc/routers'
+import { createContext } from '@/server/trpc/context'
+
+export default createNuxtApiHandler({
+  router: appRouter,
+  /**
+   * @link https://trpc.io/docs/context
+   */
+  createContext,
+  onError ({ error }) {
+    if (error.code === 'INTERNAL_SERVER_ERROR') {
+      // send to bug reporting
+      console.error('Something went wrong', error)
+    }
+  }
+  /**
+   * @link https://trpc.io/docs/caching#api-response-caching
+   */
+  // responseMeta() {
+  //   // ...
+  // },
+})

playground/server/trpc/context.ts

@@ -0,0 +1,18 @@
+/* eslint-disable @typescript-eslint/no-unused-vars */
+import type { inferAsyncReturnType } from '@trpc/server'
+import type { H3Event } from 'h3'
+
+export type Context = inferAsyncReturnType<typeof createContext>
+
+/**
+ * Creates context for an incoming request
+ * @link https://trpc.io/docs/context
+ */
+export function createContext (
+  event: H3Event
+) {
+  // for API-response caching see https://trpc.io/docs/caching
+  console.log('cookies', parseCookies(event))
+  
+  return {}
+}

playground/server/trpc/index.ts

@@ -1,53 +0,0 @@
-import * as trpc from '@trpc/server'
-import type { inferAsyncReturnType } from '@trpc/server'
-import { z } from 'zod'
-import type { CompatibilityEvent } from 'h3'
-
-const baseURL = 'https://jsonplaceholder.typicode.com'
-
-const TodoShape = z.object({
-  userId: z.number(),
-  id: z.number(),
-  title: z.string(),
-  completed: z.boolean(),
-})
-
-export type Todo = z.infer<typeof TodoShape>
-
-export const router = trpc.router<Context>()
-  .query('getTodos', {
-    async resolve() {
-      return await $fetch<Todo[]>(`${baseURL}/todos`)
-    },
-  })
-  .query('getTodo', {
-    input: z.number(),
-    async resolve(req) {
-      return await $fetch<Todo>(`${baseURL}/todos/${req.input}`)
-    },
-  })
-  .mutation('addTodo', {
-    input: TodoShape,
-    async resolve(req) {
-      console.log(req.input)
-      return await $fetch<Todo>(`${baseURL}/todos`, {
-        method: 'POST',
-        body: req.input,
-      })
-    },
-  })
-
-export async function createContext(event: CompatibilityEvent) {
-  // Create your context based on the request object
-  // Will be available as `ctx` in all your resolvers
-
-  // This is just an example of something you'd might want to do in your ctx fn
-  // const x = useCookies(event)
-  console.log(event.req.headers)
-
-  return {
-
-  }
-}
-
-  type Context = inferAsyncReturnType<typeof createContext>

playground/server/trpc/routers/index.ts

@@ -0,0 +1,10 @@
+import { router } from '../trpc'
+import { todoRouter } from './todo'
+import { userRouter } from './user'
+
+export const appRouter = router({
+  todo: todoRouter,
+  user: userRouter
+})
+
+export type AppRouter = typeof appRouter

playground/server/trpc/routers/todo.ts

@@ -0,0 +1,33 @@
+import { z } from 'zod'
+import { publicProcedure, router } from '../trpc'
+
+const baseURL = 'https://jsonplaceholder.typicode.com'
+
+const TodoShape = z.object({
+  userId: z.number(),
+  id: z.number(),
+  title: z.string(),
+  completed: z.boolean()
+})
+
+export type Todo = z.infer<typeof TodoShape>
+
+export const todoRouter = router({
+  getTodos: publicProcedure
+    .query(() => {
+      return $fetch<Todo[]>(`${baseURL}/todos`)
+    }),
+  getTodo: publicProcedure
+    .input(z.number())
+    .query((req) => {
+      return $fetch<Todo>(`${baseURL}/todos/${req.input}`)
+    }),
+  addTodo: publicProcedure
+    .input(TodoShape)
+    .mutation((req) => {
+      return $fetch<Todo>(`${baseURL}/todos`, {
+        method: 'POST',
+        body: req.input
+      })
+    })
+})

playground/server/trpc/routers/user.ts

@@ -0,0 +1,33 @@
+import { z } from 'zod'
+import { publicProcedure, router } from '../trpc'
+
+const baseURL = 'https://jsonplaceholder.typicode.com'
+
+const UserShape = z.object({
+  id: z.number(),
+  name: z.string(),
+  username: z.string(),
+  email: z.string()
+})
+
+export type User = z.infer<typeof UserShape>
+
+export const userRouter = router({
+  getUsers: publicProcedure
+    .query(() => {
+      return $fetch<User[]>(`${baseURL}/users`)
+    }),
+  getUser: publicProcedure
+    .input(z.number())
+    .query((req) => {
+      return $fetch<User>(`${baseURL}/users/${req.input}`)
+    }),
+  addUser: publicProcedure
+    .input(UserShape)
+    .mutation((req) => {
+      return $fetch<User>(`${baseURL}/users`, {
+        method: 'POST',
+        body: req.input
+      })
+    })
+})

playground/server/trpc/trpc.ts

@@ -0,0 +1,43 @@
+import { initTRPC } from '@trpc/server'
+import superjson from 'superjson'
+import { ZodError } from 'zod'
+import type { Context } from './context'
+
+const t = initTRPC.context<Context>().create({
+  transformer: superjson,
+  errorFormatter ({ shape, error }) {
+    return {
+      ...shape,
+      data: {
+        ...shape.data,
+        zodError:
+          error.code === 'BAD_REQUEST' &&
+          error.cause instanceof ZodError
+            ? error.cause!.flatten()
+            : null
+      }
+    }
+  }
+})
+
+/**
+ * Create a router
+ * @see https://trpc.io/docs/v10/router
+ */
+export const router = t.router
+
+/**
+  * Create an unprotected procedure
+  * @see https://trpc.io/docs/v10/procedures
+  **/
+export const publicProcedure = t.procedure
+
+/**
+  * @see https://trpc.io/docs/v10/middlewares
+  */
+export const middleware = t.middleware
+
+/**
+  * @see https://trpc.io/docs/v10/merging-routers
+  */
+export const mergeRouters = t.mergeRouters

playground/tsconfig.json

@@ -0,0 +1,4 @@
+{
+  // https://v3.nuxtjs.org/concepts/typescript
+  "extends": "./.nuxt/tsconfig.json"
+}

pnpm-workspace.yaml

@@ -1,2 +1,3 @@
 packages:
   - playground
+  - docs

recipes/authorization.md

@@ -1,102 +0,0 @@
-## Authorization
-
-The `createContext`-function is called for each incoming request so here you can add contextual information about the calling user from the request object.
-
-### Create context from request headers
-
-```ts
-// ~/server/trpc/index.ts
-import type { inferAsyncReturnType } from '@trpc/server'
-import type { CompatibilityEvent } from 'h3'
-import { decodeAndVerifyJwtToken } from '~/somewhere/in/your/app/utils'
-
-// The app's context - is generated for each incoming request
-export async function createContext({ req }: CompatibilityEvent) {
-  // Create your context based on the request object
-  // Will be available as `ctx` in all your resolvers
-
-  // This is just an example of something you'd might want to do in your ctx fn
-  async function getUserFromHeader() {
-    if (req.headers.authorization) {
-      const user = await decodeAndVerifyJwtToken(req.headers.authorization.split(' ')[1])
-      return user
-    }
-    return null
-  }
-  const user = await getUserFromHeader()
-
-  return {
-    user,
-  }
-}
-
-type Context = inferAsyncReturnType<typeof createContext>
-
-// [..] Define API handler and app router
-```
-
-### Option 1: Authorize using resolver
-
-```ts
-import { TRPCError } from '@trpc/server'
-
-export const router = trpc
-  .router<Context>()
-  // open for anyone
-  .query('hello', {
-    input: z.string().nullish(),
-    resolve: ({ input, ctx }) => {
-      return `hello ${input ?? ctx.user?.name ?? 'world'}`
-    },
-  })
-  // checked in resolver
-  .query('secret', {
-    resolve: ({ ctx }) => {
-      if (!ctx.user)
-        throw new TRPCError({ code: 'UNAUTHORIZED' })
-
-      return {
-        secret: 'sauce',
-      }
-    },
-  })
-```
-
-### Option 2: Authorize using middleware
-
-```ts
-import * as trpc from '@trpc/server'
-import { TRPCError } from '@trpc/server'
-
-// Merging routers: https://trpc.io/docs/merging-routers
-
-export const router = trpc
-  .router<Context>()
-  // this is accessible for everyone
-  .query('hello', {
-    input: z.string().nullish(),
-    resolve: ({ input, ctx }) => {
-      return `hello ${input ?? ctx.user?.name ?? 'world'}`
-    },
-  })
-  .merge(
-    'admin.',
-    trpc.router<Context>()
-      // this protects all procedures defined next in this router
-      .middleware(async ({ ctx, next }) => {
-        if (!ctx.user?.isAdmin)
-          throw new TRPCError({ code: 'UNAUTHORIZED' })
-
-        return next()
-      })
-      .query('secret', {
-        resolve: ({ ctx }) => {
-          return {
-            secret: 'sauce',
-          }
-        },
-      }),
-  )
-```
-
-Learn more about authorization [here](https://trpc.io/docs/authorization).

recipes/error-formatting.md

@@ -1,41 +0,0 @@
-## Error Formatting
-
-The error formatting in your router will be inferred all the way to your client (& Vue components).
-
-### Adding custom formatting
-
-```ts
-// ~/server/trpc/index.ts
-import * as trpc from '@trpc/server'
-
-export const router = trpc.router<Context>()
-  .formatError(({ shape, error }) => {
-    return {
-      ...shape,
-      data: {
-        ...shape.data,
-        zodError:
-          error.code === 'BAD_REQUEST'
-          && error.cause instanceof ZodError
-            ? error.cause.flatten()
-            : null,
-      }
-    }
-  })
-```
-
-### Usage in Vue
-
-```html
-<script setup lang="ts">
-const { error } = await useAsyncQuery(['getUser', { id: 69 }])
-</script>
-
-<template>
-  <pre v-if="error?.data?.zodError">
-    {{ JSON.stringify(error.data.zodError, null, 2) }}
-  </pre>
-</template>
-```
-
-Learn more about error formatting [here](https://trpc.io/docs/error-formatting).

recipes/error-handling.md

@@ -1,15 +0,0 @@
-## Handling errors
-
-All errors that occur in a procedure go through the `onError` method before being sent to the client. Here you can handle or change errors.
-
-```ts
-// ~/server/trpc/index.ts
-import * as trpc from '@trpc/server'
-
-export function onError({ error, type, path, input, ctx, req }) {
-  console.error('Error:', error)
-  if (error.code === 'INTERNAL_SERVER_ERROR') {
-    // send to bug reporting
-  }
-}
-```

recipes/inference-helpers.md

@@ -1,80 +0,0 @@
-## Inference Helpers
-
-`@trpc/server` exports the following helper types to assist with inferring these types from the `router` exported in `~/server/trpc/index.ts`:
-
-- `inferProcedureOutput<TProcedure>`
-- `inferProcedureInput<TProcedure>`
-- `inferSubscriptionOutput<TRouter, TPath>`
-
-```ts
-// ~/utils/trpc.ts
-import type { router } from '~/server/trpc/index.ts'
-
-type AppRouter = typeof router
-
-/**
- * Enum containing all api query paths
- */
-export type TQuery = keyof AppRouter['_def']['queries']
-
-/**
- * Enum containing all api mutation paths
- */
-export type TMutation = keyof AppRouter['_def']['mutations']
-
-/**
- * Enum containing all api subscription paths
- */
-export type TSubscription = keyof AppRouter['_def']['subscriptions']
-
-/**
- * This is a helper method to infer the output of a query resolver
- * @example type HelloOutput = InferQueryOutput<'hello'>
- */
-export type InferQueryOutput<TRouteKey extends TQuery> = inferProcedureOutput<
-  AppRouter['_def']['queries'][TRouteKey]
->
-
-/**
- * This is a helper method to infer the input of a query resolver
- * @example type HelloInput = InferQueryInput<'hello'>
- */
-export type InferQueryInput<TRouteKey extends TQuery> = inferProcedureInput<
-  AppRouter['_def']['queries'][TRouteKey]
->
-
-/**
- * This is a helper method to infer the output of a mutation resolver
- * @example type HelloOutput = InferMutationOutput<'hello'>
- */
-export type InferMutationOutput<TRouteKey extends TMutation> =
-  inferProcedureOutput<AppRouter['_def']['mutations'][TRouteKey]>
-
-/**
- * This is a helper method to infer the input of a mutation resolver
- * @example type HelloInput = InferMutationInput<'hello'>
- */
-export type InferMutationInput<TRouteKey extends TMutation> =
-  inferProcedureInput<AppRouter['_def']['mutations'][TRouteKey]>
-
-/**
- * This is a helper method to infer the output of a subscription resolver
- * @example type HelloOutput = InferSubscriptionOutput<'hello'>
- */
-export type InferSubscriptionOutput<TRouteKey extends TSubscription> =
-  inferProcedureOutput<AppRouter['_def']['subscriptions'][TRouteKey]>
-
-/**
- * This is a helper method to infer the asynchronous output of a subscription resolver
- * @example type HelloAsyncOutput = InferAsyncSubscriptionOutput<'hello'>
- */
-export type InferAsyncSubscriptionOutput<TRouteKey extends TSubscription> =
-  inferSubscriptionOutput<AppRouter, TRouteKey>
-
-/**
- * This is a helper method to infer the input of a subscription resolver
- * @example type HelloInput = InferSubscriptionInput<'hello'>
- */
-export type InferSubscriptionInput<TRouteKey extends TSubscription> =
-  inferProcedureInput<AppRouter['_def']['subscriptions'][TRouteKey]>
-```

recipes/merging-routers.md

@@ -1,46 +0,0 @@
-# Merging Routers
-
-Writing all API-code in your code in the same file is not a great idea. It's easy to merge routers with other routers.
-
-Define your routes:
-
-```ts
-// ~/server/trpc/routes/posts.ts
-export const posts = trpc.router()
-  .query('list', {
-    resolve() {
-      // ..
-      return []
-    }
-  })
-```
-
-```ts
-// ~/server/trpc/routes/users.ts
-export const users = trpc.router()
-  .query('list', {
-    resolve() {
-      // ..
-      return []
-    }
-  })
-```
-
-```ts
-// ~/server/trpc/index.ts
-import { users } from './routes/users'
-import { posts } from './routes/posts'
-
-export const router = trpc.router()
-  .merge('user.', users) // prefix user procedures with "user."
-  .merge('post.', posts) // prefix post procedures with "post."
-```
-
-and use it like this:
-
-```html
-<script setup lang="ts">
-const { data: users } = await useAsyncQuery(['user.list'])
-const { data: posts } = await useAsyncQuery(['post.list'])
-</script>
-```

recipes/validation.md

@@ -1,49 +0,0 @@
-## Validation
-
-tRPC works out-of-the-box with yup/superstruct/zod/myzod/custom validators.
-
-### Input Validation
-
-```ts
-// ~/server/trpc/index.ts
-import { z } from 'zod'
-
-export const router = trpc
-  .router()
-  .mutation('createUser', {
-    // validate input with Zod
-    input: z.object({
-      name: z.string().min(5)
-    }),
-    async resolve(req) {
-      // use your ORM of choice
-      return await UserModel.create({
-        data: req.input,
-      })
-    },
-  })
-```
-
-### Output Validation
-
-```ts
-// ~/server/trpc/index.ts
-import { z } from 'zod'
-
-export const router = trpc
-  .router()
-  .query('hello', {
-    // validate output with Zod
-    output: z.object({
-      greeting: z.string()
-    }),
-    // expects return type of { greeting: string }
-    resolve() {
-      return {
-        greeting: 'hello!',
-      }
-    },
-  })
-```
-
-Learn more about input validation [here](https://trpc.io/docs/router#input-validation).

src/client/index.ts

@@ -0,0 +1,71 @@
+import { type CreateTRPCClientOptions, type inferRouterProxyClient, 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'
+// @ts-expect-error: Nuxt auto-imports
+import { getCurrentInstance, onScopeDispose, useAsyncData } from '#imports'
+
+/**
+ * Calculates the key used for `useAsyncData` call
+ */
+export function getQueryKey (
+  path: string,
+  input: unknown
+): string {
+  return input === undefined ? path : `${path}-${hash(input || '')}`
+}
+
+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 `.useMutation` or `.useQuery()`
+    const lastArg = pathCopy.pop()!
+
+    // The `path` ends up being something like `post.byId`
+    const path = pathCopy.join('.')
+
+    const [input, otherOptions] = args
+
+    if (lastArg === 'useQuery') {
+      const { trpc, ...asyncDataOptions } = otherOptions || {} as any
+
+      let controller: AbortController
+
+      if (trpc?.abortOnUnmount) {
+        if (getCurrentInstance()) {
+          onScopeDispose(() => {
+            controller?.abort?.()
+          })
+        }
+        controller = typeof AbortController !== 'undefined' ? new AbortController() : {} as AbortController
+      }
+
+      const queryKey = getQueryKey(path, input)
+      return useAsyncData(queryKey, () => (client as any)[path].query(input, {
+        signal: controller?.signal,
+        ...trpc
+      }), asyncDataOptions)
+    }
+
+    return (client as any)[path][lastArg](input)
+  })
+}
+
+export function createTRPCNuxtClient<TRouter extends AnyRouter> (opts: CreateTRPCClientOptions<TRouter>) {
+  const client = createTRPCProxyClient<TRouter>(opts)
+
+  const decoratedClient = createFlatProxy((key) => {
+    return createNuxtProxyDecoration(key, client)
+  }) as DecoratedProcedureRecord<TRouter['_def']['record'], TRouter>
+
+  return decoratedClient
+}
+
+export {
+  httpBatchLink,
+  httpLink
+} from './links'

src/client/links.ts

@@ -0,0 +1,78 @@
+import { httpLink as _httpLink, httpBatchLink as _httpBatchLink } from '@trpc/client'
+import { type AnyRouter } from '@trpc/server'
+import { FetchError } from 'ofetch'
+// @ts-expect-error: Nuxt auto-imports
+import { useRequestHeaders } from '#imports'
+import { type HTTPLinkOptions as _HTTPLinkOptions } from '@trpc/client/dist/links/internals/httpUtils'
+
+function customFetch(input: RequestInfo | URL, init?: RequestInit) {
+  return globalThis.$fetch.raw(input.toString(), init)
+    .catch((e) => {
+      if (e instanceof FetchError && e.response) { return e.response }
+      throw e
+    })
+    .then(response => ({
+      ...response,
+      json: () => Promise.resolve(response._data)
+    }))
+}
+
+export interface HTTPLinkOptions extends _HTTPLinkOptions {
+  /**
+   * Select headers to pass to `useRequestHeaders`.
+   */
+  pickHeaders?: string[] 
+}
+
+/**
+ * This is a convenience wrapper around the original httpLink
+ * that replaces regular `fetch` with a `$fetch` from Nuxt. It
+ * also sets the default headers based on `useRequestHeaders` values.
+ *
+ * During server-side rendering, calling $fetch to fetch your internal API routes
+ * will directly call the relevant function (emulating the request),
+ * saving an additional API call.
+ *
+ * @see https://nuxt.com/docs/api/utils/dollarfetch
+ */
+export function httpLink<TRouter extends AnyRouter>(opts?: HTTPLinkOptions) {
+  const headers = useRequestHeaders(opts?.pickHeaders)
+
+  return _httpLink<TRouter>({
+    url: '/api/trpc',
+    headers () {
+      return headers
+    },
+    fetch: customFetch,
+    ...opts,
+  })
+}
+
+export interface HttpBatchLinkOptions extends HTTPLinkOptions {
+  maxURLLength?: number;
+}
+
+
+/**
+ * This is a convenience wrapper around the original httpBatchLink
+ * that replaces regular `fetch` with a `$fetch` from Nuxt. It
+ * also sets the default headers based on `useRequestHeaders` values.
+ *
+ * During server-side rendering, calling $fetch to fetch your internal API routes
+ * will directly call the relevant function (emulating the request),
+ * saving an additional API call.
+ *
+ * @see https://nuxt.com/docs/api/utils/dollarfetch
+ */
+export function httpBatchLink<TRouter extends AnyRouter>(opts?: HttpBatchLinkOptions) {
+  const headers = useRequestHeaders(opts?.pickHeaders)
+
+  return _httpBatchLink<TRouter>({
+    url: '/api/trpc',
+    headers () {
+      return headers
+    },
+    fetch: customFetch,
+    ...opts,
+  })
+}

src/client/types.ts

@@ -0,0 +1,80 @@
+import type { TRPCClientErrorLike, TRPCRequestOptions as _TRPCRequestOptions } from '@trpc/client'
+import { type TRPCSubscriptionObserver } from '@trpc/client/dist/internals/TRPCClient'
+import type {
+  AnyMutationProcedure,
+  AnyProcedure,
+  AnyQueryProcedure,
+  AnyRouter,
+  ProcedureRouterRecord,
+  inferProcedureInput,
+  inferProcedureOutput,
+  ProcedureArgs,
+  AnySubscriptionProcedure
+} from '@trpc/server'
+import { type inferObservableValue, type Unsubscribable } from '@trpc/server/observable'
+import { inferTransformedProcedureOutput } from '@trpc/server/shared'
+import type {
+  AsyncData,
+  AsyncDataOptions,
+  KeyOfRes,
+  PickFrom,
+  _Transform
+} from 'nuxt/dist/app/composables/asyncData'
+
+interface TRPCRequestOptions extends _TRPCRequestOptions {
+  abortOnUnmount?: boolean
+}
+
+type Resolver<TProcedure extends AnyProcedure> = (
+  ...args: ProcedureArgs<TProcedure['_def']>
+) => Promise<inferTransformedProcedureOutput<TProcedure>>;
+
+type SubscriptionResolver<
+  TProcedure extends AnyProcedure,
+  TRouter extends AnyRouter,
+> = (
+  ...args: [
+    input: ProcedureArgs<TProcedure['_def']>[0],
+    opts: ProcedureArgs<TProcedure['_def']>[1] &
+    Partial<
+        TRPCSubscriptionObserver<
+          inferObservableValue<inferProcedureOutput<TProcedure>>,
+          TRPCClientErrorLike<TRouter>
+        >
+      >,
+  ]
+) => Unsubscribable
+
+type DecorateProcedure<
+  TProcedure extends AnyProcedure,
+  TRouter extends AnyRouter,
+> = TProcedure extends AnyQueryProcedure
+  ? {
+      useQuery: <
+      TData = inferTransformedProcedureOutput<TProcedure>,
+      Transform extends _Transform<TData> = _Transform<TData, TData>,
+      PickKeys extends KeyOfRes<Transform> = KeyOfRes<Transform>,
+     >(
+        input: inferProcedureInput<TProcedure>,
+        opts?: AsyncDataOptions<TData, Transform, PickKeys> & { trpc?: TRPCRequestOptions },
+      ) => AsyncData<PickFrom<ReturnType<Transform>, PickKeys>, TRPCClientErrorLike<TProcedure>>,
+      query: Resolver<TProcedure>
+    } : TProcedure extends AnyMutationProcedure ? {
+      mutate: Resolver<TProcedure>
+    } : TProcedure extends AnySubscriptionProcedure ? {
+      subscribe: SubscriptionResolver<TProcedure, TRouter>
+    } : never
+
+/**
+* @internal
+*/
+export type DecoratedProcedureRecord<
+  TProcedures extends ProcedureRouterRecord,
+  TRouter extends AnyRouter,
+> = {
+  [TKey in keyof TProcedures]: TProcedures[TKey] extends AnyRouter
+    ? DecoratedProcedureRecord<TProcedures[TKey]['_def']['record'], TRouter>
+    : TProcedures[TKey] extends AnyProcedure
+      ? DecorateProcedure<TProcedures[TKey], TRouter>
+      : never;
+}

src/index.ts

@@ -0,0 +1,126 @@
+import type { ResponseMeta } from '@trpc/server/http'
+import { resolveHTTPResponse } from '@trpc/server/http'
+import type {
+  AnyRouter,
+  ProcedureType,
+  inferRouterContext,
+  inferRouterError
+} from '@trpc/server'
+import {
+  TRPCError
+} from '@trpc/server'
+import { createURL } from 'ufo'
+import type { H3Event } from 'h3'
+import { createError, defineEventHandler, isMethod, readBody } from 'h3'
+import type { TRPCResponse } from '@trpc/server/rpc'
+
+type MaybePromise<T> = T | Promise<T>
+
+export type CreateContextFn<TRouter extends AnyRouter> = (event: H3Event) => MaybePromise<inferRouterContext<TRouter>>
+
+export interface ResponseMetaFnPayload<TRouter extends AnyRouter> {
+  data: TRPCResponse<unknown, inferRouterError<TRouter>>[]
+  ctx?: inferRouterContext<TRouter>
+  paths?: string[]
+  type: ProcedureType | 'unknown'
+  errors: TRPCError[]
+}
+
+export type ResponseMetaFn<TRouter extends AnyRouter> = (opts: ResponseMetaFnPayload<TRouter>) => ResponseMeta
+
+export interface OnErrorPayload<TRouter extends AnyRouter> {
+  error: TRPCError
+  type: ProcedureType | 'unknown'
+  path: string | undefined
+  req: H3Event['node']['req']
+  input: unknown
+  ctx: undefined | inferRouterContext<TRouter>
+}
+
+export type OnErrorFn<TRouter extends AnyRouter> = (opts: OnErrorPayload<TRouter>) => void
+
+export interface ResolveHTTPRequestOptions<TRouter extends AnyRouter> {
+  router: TRouter
+  createContext?: CreateContextFn<TRouter>
+  responseMeta?: ResponseMetaFn<TRouter>
+  onError?: OnErrorFn<TRouter>
+  batching?: {
+    enabled: boolean
+  }
+}
+
+function getPath (event: H3Event): string | null {
+  if (typeof event.context.params.trpc === 'string') { return event.context.params.trpc }
+
+  if (Array.isArray(event.context.params.trpc)) { return event.context.params.trpc.join('/') }
+
+  return null
+}
+
+export function createNuxtApiHandler<TRouter extends AnyRouter> ({
+  router,
+  createContext,
+  responseMeta,
+  onError,
+  batching
+}: ResolveHTTPRequestOptions<TRouter>) {
+  return defineEventHandler(async (event) => {
+    const {
+      req,
+      res
+    } = event.node
+
+    const $url = createURL(req.url!)
+
+    const path = getPath(event)
+
+    if (path === null) {
+      const error = router.getErrorShape({
+        error: new TRPCError({
+          message:
+            'Param "trpc" not found - is the file named `[trpc]`.ts or `[...trpc].ts`?',
+          code: 'INTERNAL_SERVER_ERROR'
+        }),
+        type: 'unknown',
+        ctx: undefined,
+        path: undefined,
+        input: undefined
+      })
+
+      throw createError({
+        statusCode: 500,
+        statusMessage: JSON.stringify(error)
+      })
+    }
+
+    const httpResponse = await resolveHTTPResponse({
+      batching,
+      router,
+      req: {
+        method: req.method!,
+        headers: req.headers,
+        body: isMethod(event, 'GET') ? null : await readBody(event),
+        query: $url.searchParams
+      },
+      path,
+      createContext: async () => await createContext?.(event),
+      responseMeta,
+      onError: (o) => {
+        onError?.({
+          ...o,
+          req
+        })
+      }
+    })
+
+    const { status, headers, body } = httpResponse
+
+    res.statusCode = status
+
+    headers && Object.keys(headers).forEach((key) => {
+      res.setHeader(key, headers[key]!)
+    })
+
+    return body
+  })
+}

src/module.ts

@@ -1,66 +0,0 @@
-import { fileURLToPath } from 'url'
-import { join, resolve } from 'pathe'
-import { defu } from 'defu'
-import dedent from 'dedent'
-
-import { addAutoImport, addPlugin, addServerHandler, addTemplate, defineNuxtModule } from '@nuxt/kit'
-
-export interface ModuleOptions {
-  baseURL: string
-  endpoint: string
-}
-
-export default defineNuxtModule<ModuleOptions>({
-  meta: {
-    name: 'trpc-nuxt',
-    configKey: 'trpc',
-  },
-  defaults: {
-    baseURL: 'http://localhost:3000',
-    endpoint: '/trpc',
-  },
-  async setup(options, nuxt) {
-    const runtimeDir = fileURLToPath(new URL('./runtime', import.meta.url))
-    nuxt.options.build.transpile.push(runtimeDir, '#build/trpc-handler')
-
-    const handlerPath = join(nuxt.options.buildDir, 'trpc-handler.ts')
-    const trpcOptionsPath = join(nuxt.options.srcDir, 'server/trpc')
-
-    // Final resolved configuration
-    const finalConfig = nuxt.options.runtimeConfig.public.trpc = defu(nuxt.options.runtimeConfig.public.trpc, {
-      baseURL: options.baseURL,
-      endpoint: options.endpoint,
-    })
-
-    addAutoImport([
-      { name: 'useClient', from: join(runtimeDir, 'client') },
-      { name: 'useAsyncQuery', from: join(runtimeDir, 'client') },
-      { name: 'useClientHeaders', from: join(runtimeDir, 'client') },
-      { name: 'getQueryKey', from: join(runtimeDir, 'client') },
-    ])
-
-    addServerHandler({
-      route: `${finalConfig.endpoint}/*`,
-      handler: handlerPath,
-    })
-
-    addPlugin(resolve(runtimeDir, 'plugin'))
-
-    addTemplate({
-      filename: 'trpc-handler.ts',
-      write: true,
-      getContents() {
-        return dedent`
-          import { createTRPCHandler } from 'trpc-nuxt/api'
-          import * as functions from '${trpcOptionsPath}'
-    
-          export default createTRPCHandler({
-            ...functions,
-            endpoint: '${finalConfig.endpoint}'
-          })
-        `
-      },
-    })
-  },
-})
-

src/runtime/api.ts

@@ -1,90 +0,0 @@
-import { resolveHTTPResponse } from '@trpc/server'
-import type {
-  AnyRouter,
-  ProcedureType,
-  ResponseMeta,
-  TRPCError,
-  inferRouterContext,
-  inferRouterError,
-} from '@trpc/server'
-import { createURL } from 'ufo'
-import type { CompatibilityEvent } from 'h3'
-import { defineEventHandler, isMethod, useBody } from 'h3'
-import type { TRPCResponse } from '@trpc/server/dist/declarations/src/rpc'
-
-type MaybePromise<T> = T | Promise<T>
-
-export type CreateContextFn<TRouter extends AnyRouter> = (event: CompatibilityEvent) => MaybePromise<inferRouterContext<TRouter>>
-
-export interface ResponseMetaFnPayload<TRouter extends AnyRouter> {
-  data: TRPCResponse<unknown, inferRouterError<TRouter>>[]
-  ctx?: inferRouterContext<TRouter>
-  paths?: string[]
-  type: ProcedureType | 'unknown'
-  errors: TRPCError[]
-}
-
-export type ResponseMetaFn<TRouter extends AnyRouter> = (opts: ResponseMetaFnPayload<TRouter>) => ResponseMeta
-
-export interface OnErrorPayload<TRouter extends AnyRouter> {
-  error: TRPCError
-  type: ProcedureType | 'unknown'
-  path: string | undefined
-  req: CompatibilityEvent['req']
-  input: unknown
-  ctx: undefined | inferRouterContext<TRouter>
-}
-
-export type OnErrorFn<TRouter extends AnyRouter> = (opts: OnErrorPayload<TRouter>) => void
-
-export function createTRPCHandler<Router extends AnyRouter>({
-  router,
-  createContext,
-  responseMeta,
-  onError,
-  endpoint,
-}: {
-  router: Router
-  createContext?: CreateContextFn<Router>
-  responseMeta?: ResponseMetaFn<Router>
-  onError?: OnErrorFn<Router>
-  endpoint: string
-}) {
-  return defineEventHandler(async (event) => {
-    const {
-      req,
-      res,
-    } = event
-
-    const $url = createURL(req.url!)
-
-    const httpResponse = await resolveHTTPResponse({
-      router,
-      req: {
-        method: req.method!,
-        headers: req.headers,
-        body: isMethod(event, 'GET') ? null : await useBody(event),
-        query: $url.searchParams,
-      },
-      path: $url.pathname.substring(endpoint.length + 1),
-      createContext: async () => createContext?.(event),
-      responseMeta,
-      onError: (o) => {
-        onError?.({
-          ...o,
-          req,
-        })
-      },
-    })
-
-    const { status, headers, body } = httpResponse
-
-    res.statusCode = status
-
-    headers && Object.keys(headers).forEach((key) => {
-      res.setHeader(key, headers[key]!)
-    })
-
-    return body
-  })
-}

src/runtime/client.ts

@@ -1,82 +0,0 @@
-import type {
-  AsyncData,
-  AsyncDataOptions,
-  KeyOfRes,
-  PickFrom,
-  _Transform,
-} from 'nuxt/dist/app/composables/asyncData'
-import type { ProcedureRecord, inferHandlerInput, inferProcedureInput, inferProcedureOutput } from '@trpc/server'
-import type { TRPCClient, TRPCClientErrorLike } from '@trpc/client'
-import { objectHash } from 'ohash'
-import type { Ref } from 'vue'
-import { useAsyncData, useNuxtApp, useState } from '#app'
-import type { router } from '~/server/trpc'
-
-type MaybeRef<T> = T | Ref<T>
-
-type AppRouter = typeof router
-
-export type inferProcedures<
-  TObj extends ProcedureRecord<any, any, any, any, any, any>,
-> = {
-  [TPath in keyof TObj]: {
-    input: inferProcedureInput<TObj[TPath]>
-    output: inferProcedureOutput<TObj[TPath]>
-  };
-}
-
-export type TQueries = AppRouter['_def']['queries']
-export type TError = TRPCClientErrorLike<AppRouter>
-
-export type TQueryValues = inferProcedures<AppRouter['_def']['queries']>
-
-/**
- * Calculates the key used for `useAsyncData` call
- * @param pathAndInput
- */
-export function getQueryKey<
-    TPath extends keyof TQueryValues & string,
-    >(pathAndInput: [path: TPath, ...args: inferHandlerInput<TQueries[TPath]>]) {
-  return `${pathAndInput[0]}-${objectHash(pathAndInput[1] ? JSON.stringify(pathAndInput[1]) : '')}`
-}
-
-export async function useAsyncQuery<
-  TPath extends keyof TQueryValues & string,
-  TOutput extends TQueryValues[TPath]['output'] = TQueryValues[TPath]['output'],
-  Transform extends _Transform<TOutput> = _Transform<TOutput, TOutput>,
-  PickKeys extends KeyOfRes<Transform> = KeyOfRes<Transform>,
->(
-  pathAndInput: [path: TPath, ...args: inferHandlerInput<TQueries[TPath]>],
-  options: AsyncDataOptions<TOutput, Transform, PickKeys> = {},
-): Promise<AsyncData<PickFrom<ReturnType<Transform>, PickKeys>, TError>> {
-  const { $client } = useNuxtApp()
-  const key = getQueryKey(pathAndInput)
-  const serverError = useState<TError | null>(`error-${key}`, () => null)
-  const { error, data, ...rest } = await useAsyncData(
-    key,
-    () => $client.query(...pathAndInput),
-    // @ts-expect-error: Internal
-    options,
-  )
-
-  if (process.server && error.value && !serverError.value)
-    serverError.value = error.value as any
-
-  if (data.value)
-    serverError.value = null
-
-  return {
-    ...rest,
-    data,
-    error: serverError,
-  } as any
-}
-
-export function useClient(): TRPCClient<AppRouter> {
-  const { $client } = useNuxtApp()
-  return $client
-}
-
-export function useClientHeaders(initialValue: MaybeRef<Record<string, any>> = {}): Ref<Record<string, any>> {
-  return useState('trpc-nuxt-header', () => initialValue)
-}

src/runtime/plugin.ts

@@ -1,30 +0,0 @@
-import * as trpc from '@trpc/client'
-import { unref } from 'vue'
-import { useClientHeaders } from './client'
-import { defineNuxtPlugin, useRequestHeaders, useRuntimeConfig } from '#app'
-import type { router } from '~/server/trpc'
-
-declare type AppRouter = typeof router
-
-export default defineNuxtPlugin((nuxtApp) => {
-  const config = useRuntimeConfig().public.trpc
-  const headers = useRequestHeaders()
-  const otherHeaders = useClientHeaders()
-  const client = trpc.createTRPCClient<AppRouter>({
-    url: `${config.baseURL}${config.endpoint}`,
-    headers: () => {
-      return {
-        ...unref(otherHeaders),
-        ...headers,
-      }
-    },
-  })
-
-  nuxtApp.provide('client', client)
-})
-
-declare module '#app' {
-  interface NuxtApp {
-    $client: trpc.TRPCClient<AppRouter>
-  }
-}

tsconfig.json

@@ -1,3 +1,16 @@
 {
-  "extends": "./playground/.nuxt/tsconfig.json"
+  "compilerOptions": {
+    "target": "es2020",
+    "module": "esnext",
+    "strict": true,
+    "esModuleInterop": true,
+    "moduleResolution": "node",
+    "skipLibCheck": true,
+    "noUnusedLocals": true,
+    "noImplicitAny": true,
+    "allowJs": true,
+    "noEmit": true,
+    "resolveJsonModule": true,
+    "skipDefaultLibCheck": true
+  }
 }

tsup.config.ts

@@ -0,0 +1,15 @@
+import { defineConfig } from 'tsup'
+
+export default defineConfig({
+  entry: ['src/index.ts', 'src/client/index.ts'],
+  format: ['cjs', 'esm'],
+  splitting: false,
+  clean: true,
+  external: ['#app', '#imports', /@trpc\/client/, /@trpc\/server/],
+  dts: true,
+  outExtension ({ format }) {
+    return {
+      js: format === 'esm' ? '.mjs' : `.${format}`
+    }
+  }
+})