Step1

ts
const t = initTRPC.create();
 
const router = t.router;
const publicProcedure = t.procedure;
 
const appRouter = router({
  greeting: publicProcedure
    .input(z.object({ name: z.string() }))
    .query((opts) => {
      const { input } = opts;
               
const input: {
    name: string;
}
 
      return `Hello ${input.name}` as const;
  }),
});
 
export type AppRouter = typeof appRouter;

ts
const t = initTRPC.create();
 
const router = t.router;
const publicProcedure = t.procedure;
 
const appRouter = router({
  greeting: publicProcedure
    .input(z.object({ name: z.string() }))
    .query((opts) => {
      const { input } = opts;
               
const input: {
    name: string;
}
 
      return `Hello ${input.name}` as const;
  }),
});
 
export type AppRouter = typeof appRouter;