Function reportSuccess

packages/jest-worker/src/workers/processChild.ts:96–116

(result: unknown)

process.on('message', messageListener);

function reportSuccess(result: unknown) {
  if (!process || !process.send) {
    throw new Error('Child can only be used on a forked process');
  }

  try {
    process.send([PARENT_MESSAGE_OK, result]);
  } catch (error) {
    if (
      isError(error) &&
      // if .send is a function, it's a serialization issue
      !error.message.includes('.send is not a function')
    ) {
      // Apply specific serialization only in error cases
      // to avoid affecting performance in regular cases.
      process.send([PARENT_MESSAGE_OK, packMessage(result)]);
    } else {
      throw error;
    }
  }
}

function reportClientError(error: Error) {
  return reportError(error, PARENT_MESSAGE_CLIENT_ERROR);