Type Alias Result<T>

Example

async function getData(): Promise<Result<Data>> {
  if (error) {
    errorStack.stack_push("error", "Failed to get data");
    return Err();
  }
  return Ok(data);
}

const result = await getData();
if (!result.ok) {
  // Can't access result.value here - TypeScript error
  console.log(errorStack.stack_search("data"));
  return;
}
// TypeScript knows result.ok === true, so .value exists
useData(result.value);
Copy