1939.js

const express = require("express");
const Sentry = require("@sentry/node");

const api = express();

Sentry.init({
  dsn: "http://whatever@sa.com/12",
  environment: "development",
  beforeSend(event) {
    console.log("beforeSend", event.user.id);
    return null;
  }
});

api.use(Sentry.Handlers.requestHandler());

api.use((req, res, next) => {
  req.user = { id: Math.ceil(Math.random() * 1000) };
  next();
});

// Set user for Sentry context
api.use((req, res, next) => {
  if (req.user) {
    console.log("Point A", req.user.id);
    Sentry.getCurrentHub().configureScope(scope => {
      console.log("Point B", req.user.id);
      scope.setUser({ id: req.user.id });
    });
  }

  next();
});

// Throw an error for all requests
api.use((req, res, next) => {
  throw new Error("Uh-oh Test");
});

api.use(Sentry.Handlers.errorHandler());

api.use((err, req, res, next) => {
  const status = err.status || 500;
  const msg = err.message || "Internal Server Error";
  res.status(status).json({ name: "API Error", message: msg });
});

api.listen(3000);