What does finally do with return values and errors in this code?

async function main() {
  const a = await Promise.resolve("value").finally(() => "ignored");
  console.log(a);
 
  const b = await Promise.reject(new Error("original"))
    .finally(() => console.log("cleanup"))
    .catch((error) => error.message);
  console.log(b);
 
  const c = await Promise.resolve("value")
    .finally(() => {
      throw new Error("from finally");
    })
    .catch((error) => error.message);
  console.log(c);
}
 
main();