vm.Module.evaluate() morphs loader errors into module evaluation rejections

This came up in https://github.com/nodejs/node/pull/60205#discussion_r2423587581 when I was trying to make vm.Module.evaluate() return the module evaluation promise as-is (so synchronously fulfilled for synthetic modules and source text modules without TLA). Currently the validation errors, ERR_VM_MODULE_STATUS, THROW_ERR_SCRIPT_EXECUTION_TIMEOUT, and THROW_ERR_SCRIPT_EXECUTION_INTERRUPTED would always be rejected, so for a synchronous loader, they would either have to expose these underlying rejections to users when the loading goes wrong, or be forced to become asynchronous as it cannot catch these errors synchronously and paint it over. i.e. they cannot do something like this:

function syncLoad() {
  try {
    mod.evaluate();
  } catch(e) {  // This allows the user to get the loader errors synchronously
    if (e.code === 'ERR_VM_MODULE_STATUS' ||
        e.code === 'ERR_SCRIPT_EXECUTION_INTERRUPTED' ||
        e.code === 'ERR_SCRIPT_EXECUTION_TIMEOUT') {
      // fix it up and try again, or error and explain to user what to do
      // but hide the errors that do not directly come from module code
      // as implementation detail
    }
  }
  if (mod.status === 'errored') {
    throw mod.error;  // It's an evaluation error from the module code
  }
  return mod.namespace;
}

Opening a separate issue to discuss if there's another way to make this possible other than just making it throw these loader errors synchronously.

Inizia da vm.Module.evaluate() e leggi la discussione della pull request collegata, concentrandoti su come vengono attualmente segnalati gli errori di validazione e del loader. L'issue è completata quando il progetto concorda su un modo che consenta ai loader sincroni di distinguere gli errori del loader dagli errori di valutazione del modulo.