Sentry error handling in aws lambda (nodejs)

lambda_function.js

const path = require("path");
const Raven = require("raven");

const lambdaHandler = async event => {
  throw new Error("test");
  return {
    statusCode: 200,
    body: JSON.stringify({ message: "ok" })
  };
};

const getSourceMaps = data => {
  const stacktrace = data.exception && data.exception[0].stacktrace;
  if (stacktrace && stacktrace.frames) {
    stacktrace.frames.forEach(frame => {
      frame.filename = "app:///" + path.relative("/var/task/", frame.filename);
    });
  }

  return data;
};

Raven.config(process.env.SENTRY_DSN, {
  dataCallback: getSourceMaps
}).install();

exports.handler = async event => {
  try {
    return await lambdaHandler(event);
  } catch (error) {
    return new Promise(resolve => {
      Raven.captureException(error, () => {
        resolve({
          body: JSON.stringify({
            err: error.message,
            msg: "An error has occured. Our developers have been informed."
          }),
          statusCode: 500
        });
      });
    });
  }
};