Function getErrMsg

src/error.ts:42–51

(err: unknown, defaultMsg?: string)

 * @return An error string
 */
export function getErrMsg(err: unknown, defaultMsg?: string): string {
  if (err instanceof Error) {
    return err.message;
  } else if (typeof err === "string") {
    return err;
  } else if (defaultMsg) {
    return defaultMsg;
  }
  return JSON.stringify(err);
}

/**
 * Safely gets an error stack (or error message if no stack is available)