Function transformErr

src/applications/app-errors.js:58–101

(ogErr, appOrParcel, newStatus)

}

export function transformErr(ogErr, appOrParcel, newStatus) {
  const errPrefix = `${objectType(appOrParcel)} '${toName(
    appOrParcel
  )}' died in status ${appOrParcel.status}: `;

  let result;

  if (ogErr instanceof Error) {
    try {
      ogErr.message = errPrefix + ogErr.message;
    } catch (err) {
      /* Some errors have read-only message properties, in which case there is nothing
       * that we can do.
       */
    }
    result = ogErr;
  } else {
    console.warn(
      formatErrorMessage(
        30,
        __DEV__ &&
          `While ${appOrParcel.status}, '${toName(
            appOrParcel
          )}' rejected its lifecycle function promise with a non-Error. This will cause stack traces to not be accurate.`,
        appOrParcel.status,
        toName(appOrParcel)
      )
    );
    try {
      result = Error(errPrefix + JSON.stringify(ogErr));
    } catch (err) {
      // If it's not an Error and you can't stringify it, then what else can you even do to it?
      result = ogErr;
    }
  }

  result.appOrParcelName = toName(appOrParcel);

  // We set the status after transforming the error so that the error message
  // references the state the application was in before the status change.
  appOrParcel.status = newStatus;

  return result;
}