Nodejs: question of type input with npm inquirer not working

I am using npm inquirer for the first time.

I am using a code similar to this:

const inquirer = require("inquirer");

const questions = [
  {
    type: "checkbox",
    name: "collections.telemetria",
    message: "Select collections of database telemetria",
    choices: [
      "chimera-11/14/2019,-4:22:38-PM",
      "chimera-11/14/2019,-4:28:26-PM"
    ]
  },
  {
    type: "checkbox",
    name: "collections.testa",
    message: "Select collections of database testa",
    choices: ["testa_c"]
  }
];

async function main() {
  const collections = (await inquirer.prompt(questions)).collections;
  console.log("collections:", collections);
  const outPath = await inquirer.prompt([
    {
      type: "input",
      name: "outPath",
      default: "./",
      message: "Insert the output path"
    }
  ]).outPath;
  console.log(outPath);
}
main();

The problem is that when it comes to the question of type input to be answered, the word undefined appears and I cannot put any input.

Here is a code sandbox: https://codesandbox.io/s/stoic-kowalevski-dgg5u

Thanks to the advice of Shivam Sood, I found that there was only a mistake in the code. I forgot to put the await inquirer.prompt([...]) inside the parenthesis before calling the property outPath of the expected result.

So the right code should be:

const outPath = (await inquirer.prompt([
    {
      type: "input",
      name: "outPath",
      default: "./",
      message: "Insert the output path"
    }
  ])).outPath;
  console.log(outPath);