No overload matches this call.
  Overload 1 of 3, '(handler: ServeHandler): Server', gave the following error.
    Argument of type '(request: Request) => Promise<Response | undefined>' is not assignable to parameter of type 'ServeHandler'.
      Type 'Promise<Response | undefined>' is not assignable to type 'Response | Promise<Response>'.
        Type 'Promise<Response | undefined>' is not assignable to type 'Promise<Response>'.
          Type 'Response | undefined' is not assignable to type 'Response'.
            Type 'undefined' is not assignable to type 'Response'.  Overload 2 of 3, '(options: ServeInit & (ServeOptions | ServeTlsOptions)): Server', gave the following error.

No overload matches this call.
  Overload 1 of 3, '(handler: ServeHandler): Server', gave the following error.
    Argument of type '(request: Request) => Promise<Response | undefined>' is not assignable to parameter of type 'ServeHandler'.
      Type 'Promise<Response | undefined>' is not assignable to type 'Response | Promise<Response>'.
        Type 'Promise<Response | undefined>' is not assignable to type 'Promise<Response>'.
          Type 'Response | undefined' is not assignable to type 'Response'.
            Type 'undefined' is not assignable to type 'Response'.  Overload 2 of 3, '(options: ServeInit & (ServeOptions | ServeTlsOptions)): Server', gave the following error.

import InputLoop from "https://deno.land/x/input@2.0.3/index.ts";

const kv = await Deno.openKv();
const input = new InputLoop();
let name;
let age;
let profession;
let id;

while (true) {
    console.log("");
    console.log("DENO KV DEMO");
    console.log("> 0: Read Database");
    console.log("> 1: Create/Edit User");
    console.log("> 2: Delete User");
    console.log("> 3: Exit");
    const choice = await input.question("Input: ", false);
    switch (choice) {
        case "0":
            for (const i in kv.list({ prefix: ["users"] })) {
                console.log(i);
            }
            break;
        case "1":
            name = await input.question("Name: ", false);
            if (!name) {
                console.log("Invalid Input!");
                break;
            }
            age = await input.question("Age: ", false);
            profession = await input.question("Profession: ", false);
            id = await input.question("Id: ", false);
            await kv.set(["users", name], { age, profession, id });
            break;
        case "2":
            name = await input.question("Name: ", false);
            if (!name) {
                console.log("Invalid Input!");
                break;
            }
            kv.delete(["users", name]);
            break;
        case "3":
            Deno.exit();
            break;
        default:
            console.log("Invalid Input!");
    }
}

import InputLoop from "https://deno.land/x/input@2.0.3/index.ts";

const kv = await Deno.openKv();
const input = new InputLoop();
let name;
let age;
let profession;
let id;

while (true) {
    console.log("");
    console.log("DENO KV DEMO");
    console.log("> 0: Read Database");
    console.log("> 1: Create/Edit User");
    console.log("> 2: Delete User");
    console.log("> 3: Exit");
    const choice = await input.question("Input: ", false);
    switch (choice) {
        case "0":
            for (const i in kv.list({ prefix: ["users"] })) {
                console.log(i);
            }
            break;
        case "1":
            name = await input.question("Name: ", false);
            if (!name) {
                console.log("Invalid Input!");
                break;
            }
            age = await input.question("Age: ", false);
            profession = await input.question("Profession: ", false);
            id = await input.question("Id: ", false);
            await kv.set(["users", name], { age, profession, id });
            break;
        case "2":
            name = await input.question("Name: ", false);
            if (!name) {
                console.log("Invalid Input!");
                break;
            }
            kv.delete(["users", name]);
            break;
        case "3":
            Deno.exit();
            break;
        default:
            console.log("Invalid Input!");
    }
}