prevent to crash node js after uncaughtExceptions - node.js

Question

i have written one middle-ware for handling uncaughtExceptions which is working fine but after that server will crashed.
how do i prevent to crash it?
server.js:
const express = require('express');
const winston = require("winston");
const app = express();
//Logging is responsible to log and display errors
require('./startup/logging')();
//routes will contains all the routes list
require('./startup/routes')(app);
//PORT
const port = process.env.PORT || 3000;
app.listen(port,() => winston.info(`Listening on port ${port}....`));
logging.js
const express = require('express');
const winston = require('winston');
// require('express-async-errors');
module.exports = function() {
winston.handleExceptions(
new winston.transports.File({ filename: 'uncaughtExceptions.log' })
);
process.on('unhandledRejection', (ex) => {
throw ex;
});
winston.add(winston.transports.File, { filename: 'error.log' });
}

Answer 1

As the documentation states,
By default, winston will exit after logging an uncaughtException. If this is not the behavior you want, set exitOnError = false
const logger = winston.createLogger({ exitOnError: false });
//
// or, like this:
//
logger.exitOnError = false;
It is generally considered a bad practice to not exit after an exception because the consequences are unpredictable. If only some of the exceptions are known to be tolerable, they can be specifically handled with a predicate:
const ignoreWarnings = err => !(err instanceof WarningError);
const logger = winston.createLogger({ exitOnError: ignoreWarnings });