/*
 * Top-level error handler for async functions.
 */
async function errorWrap(cb, ...args) {
  try {
    await cb(...args);
  } catch(err) {
    if (err.stack) {
      // `Error` object
      console.log(err.stack);
    } else {
      // Other object
      console.log(err);
    }

    process.exit()
  }
}

// Usage
async function foo() {
  throw new Error();
}

foo();           // Silently errors
errorWrap(foo);  // Logs stack-trace *and exits*