Promise.all return value [duplicate]

Question

I'm trying to build an array of objects where some of the fields need remote data. It all works with awaits inside the loop but I'm interested in optimising this. I wrote the following proof-of-concept:

async function p1(x) { // the first remote data
  return new Promise((resolve) => {
    setTimeout(() => {
      resolve(`p1-${x}`);
    }, 250);
  });
}

async function p2(x) { // the second remote data
  return new Promise((resolve) => {
    setTimeout( () => {
      resolve(`p2-${x}`);
    }, 250);
  });
}

async function t(n) {
  return { a: await p1(n), b: await p2(n), c: n };
}

async function r() {
  const results = new Map();
  for (let n = 0; n < 2; n++) {
    results.set(n, t(n));
  }
  await Promise.all(results.values());
  console.log('in function', results);
  return results;
}

(async () => {
  const answers = await r();
  console.log('answers', JSON.stringify(answers));
})().catch((e) => {
  console.log(e);
});

This is the output from running node (13.x):

in function Map(2) {
  0 => Promise { { a: 'p1-0', b: 'p2-0', c: 0 } },
  1 => Promise { { a: 'p1-1', b: 'p2-1', c: 1 } }
}
answers {}

So my function r() seems to be doing the right thing but the value returned is empty. What am I not understanding?