JAVASCRIPT

error handling in node js

app.get('/', function (req, res, next) {
  Promise.resolve().then(function () {
    throw new Error('BROKEN')
  }).catch(next) // Errors will be passed to Express.
})

error handling in node.js

app.use(( err, req, res, next ) => {
  res.locals.error = err;
  if (err.status >= 100 && err.status < 600)
    res.status(err.status);
  else
    res.status(500);
  res.render('error');
});

node.js error handling

process.on('warning', veri => console.log(veri))
process.on('unhandledRejection', veri => console.log(veri))
process.on('uncaughtException', veri => console.log(veri))