index.ts

#! /usr/bin/env node

import inquirer from "inquirer";

const answer = await inquirer.prompt([
    { message: "Enter first number", type: "number", name: "firstNumber" },
    { message: "Enter second number", type: "number", name: "secondNumber" },
    {
      message: "Select one of the operators to perform operations",
      type: "list",
      name: "operator",
      choices: ["Addition", "subtraction", "multiplication", "division"],
    },
  ]);

  // conditional statement
if (answer.operator === "Addition") {
    console.log(answer.firstNumber + answer.secondNumber);
  } else if (answer.operator === "subtraction") {
    console.log(answer.firstNumber - answer.secondNumber);
  } else if (answer.operator === "multiplication") {
    console.log(answer.firstNumber * answer.secondNumber);
  } else if (answer.operator === "division") {
    console.log(answer.firstNumber / answer.secondNumber);
  } else {
    console.log("please select valid operator");
  }