update dev playground

playground/server/trpc/index.ts

@@ -1,15 +1,17 @@
 import * as trpc from '@trpc/server'
 import { z } from 'zod'
 
-export interface Todo {
-  userId: number
-  id: number
-  title: string
-  completed: boolean
-}
-
 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()
   .query('getTodos', {
     async resolve() {
@@ -22,3 +24,12 @@ export const router = trpc.router()
       return await $fetch<Todo>(`${baseURL}/todos/${req.input}`)
     },
   })
+  .mutation('addTodo', {
+    input: TodoShape,
+    async resolve(req) {
+      return await $fetch<Todo>(`${baseURL}/todos`, {
+        method: 'POST',
+        body: req.input,
+      })
+    },
+  })