Sentry configuration example

app.js

import * as raven from 'raven';
import * as express from 'express';
import * as packageJson from './package.json';

const app: express.Express = express();

const SENTRY_DNS = 'your sentry dns setting will be here';

app.use(configureSentry(SENTRY_DNS));
app.use(sentry.errorHandler());

function prepareSentryData(data: any): any {
  // This function is called with all the data that Raven is going to ship
  // up to Sentry.
  
  // You may choose to scrub out some specific data from `data.request` here
  // as this might contain cookies, access tokens, etc, which you may not wish
  // to leak. Sentry does some auto filtering, but that's on Sentry's server side.
  // This may not be an issue if you're self-hosting Sentry, it's up to you!

  // Modify the stack trace to pick up our sourcemaps
  const stacktrace = data.exception && data.exception[0].stacktrace;
  if (stacktrace && stacktrace.frames) {
    stacktrace.frames.forEach((frame: any) => {
      if (frame.filename.startsWith('/')) {
        // We use __dirname || process.cwd() here, this only works if this file is in the
        // root if your project. If it is not, you should check the Sentry TypeScript docs
        // https://docs.sentry.io/clients/node/typescript/
        frame.filename =
          'app:///' + path.relative(__dirname || process.cwd(), frame.filename);
      }
    });
  }

  return data;
}

function configureSentry(
  dns: string
): (req: IncomingMessage, res: ServerResponse, next: () => void) => void {
  sentry
    .config(dns, {
      dataCallback: prepareSentryData,
      // This version must be a string which is the same as your sentry release.
      // We keep our package.json, git tags, and sentry release versions all the
      // same to make this easy, so here we just feed from that. You may choose
      // to do something different such as reading from an environment variable.
      release: (packageJson as any).version,
    })
    .install();

  return sentry.requestHandler();
}