RMF003 — onSubmit threw

The form calls onSubmit from a DOM submit event, where nobody is waiting on the promise it returns. A failure there is the app's to handle — the form does not know whether a network error should become a message, a retry or a redirect — but it must not vanish either, so it is reported and the form leaves isSubmitting behind it.

Handle it inside the handler, which is where the context is:

async save(values: Signup) {
  try {
    await register(values);
  } catch {
    this.form.setError("email", "we could not reach the server");
  }
}

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