index.js

#!/usr/bin/env node
import inquirer from "inquirer";
console.log("Hi Welcome to todo list maker");
let todolist = [];
let repeat = true;
let serial = 1;
let update = true;
let del = true;
while (repeat) { // means repeat = true
    const asksFortodos = await inquirer.prompt([{
            name: "Ask",
            type: "input",
            message: `What do you want to add in serial no : ${serial} of your todo list?`
        },
        {
            name: "confirmForNext",
            type: "confirm",
            message: "Do yo want to add more things in your todo list?",
            default: "true"
        }
    ]);
    if (asksFortodos.Ask !== "") {
        todolist.push(serial + "." + asksFortodos.Ask);
        serial++;
        console.log(todolist);
    }
    repeat = asksFortodos.confirmForNext;
}
while (update) {
    let askforUpdate = await inquirer.prompt({
        name: "firstAsk",
        type: "confirm",
        message: " Are you want to change any list item ?",
        default: "false"
    });
    if (askforUpdate.firstAsk == true) {
        let askforUpdate2 = await inquirer.prompt([
            {
                name: "secondAsk",
                type: "number",
                message: "Write the number of your element."
            },
            {
                name: "thirdAsk",
                type: "string",
                message: "Write the value you want to replace it with."
            }
        ]);
        if (askforUpdate2.thirdAsk !== "") {
            todolist[askforUpdate2.secondAsk - 1] = askforUpdate2.secondAsk + "." + askforUpdate2.thirdAsk;
        }
    }
    update = askforUpdate.firstAsk;
}
while (del) {
    let askForDelete = await inquirer.prompt({
        name: "ask",
        type: "confirm",
        message: "Are you want to delete any list item?",
        default: "false"
    });
    if (askForDelete.ask === true) {
        let askForDelete2 = await inquirer.prompt({
            name: "ask",
            type: "number",
            message: "Write its serial no : "
        });
        todolist.splice(askForDelete2.ask - 1, 1);
    }
    del = askForDelete.ask;
}
console.log("Thanks for using");
console.log(`Here  is your todo list items : `);
console.log(todolist);