Waiting for an async reporter callback

[Ansis100]

I'd like to log envalid errors to our log aggregation service. However, the logger function is async, which means that the reporter callback also has to be async. Here's a pseudocode-y example:

const goodEnv = cleanEnv(env, validators, {
  reporter: async ({ errors }) => {
    await logger(errors);
    process.exit(1);
  }
});

The issue is that the goodEnv should not be used until it is fully checked, which is why there is a process.exit in the reporter - to stop further code from using an unchecked environment. However, the application will only exit when the logger function has finished, which means that further code has a chance to mess something up while it is logging. I also can't make the logger function synchronous because then the logging service request will be cancelled by the application exiting.

Is there any way to make cleanEnv return a promise that resolves when everything is finished, including reporter calls?

[Ansis100]

Side note - I'm pretty sure this would mean changes in the cleanEnv code for my specific case. If that's not possible then maybe I can just call the validator functions myself, basically reimplementing cleanEnv?

[SimenB]

problem with this is that I think that means cleanEnv needs to be async as well, which is very breaking.

What about:

let reporterErrors;

const goodEnv = cleanEnv(env, validators, {
  reporter: ({ errors }) => {
    reporterErrors = errors;
  }
});

if (reporterErrors) {
  await logger(errors);
  process.exit(1);
}

?

[Ansis100]

This is exactly what I needed. I'm not sure why I didn't think of that. My bad. Thank you for the suggestion!