Async

The callback passed to mayfail can return a promise. Await the same tuple at the call site.

import { mayfail } from "mayfail";

const [user, error] = await mayfail(() => fetch("/api/me").then((response) => response.json()));

if (error) {
  console.error(error.message);
} else {
  console.log(user);
}

The returned promise resolves to the same Result<T> shape used by synchronous operations.