How do I send an email for every error that occurs in Node.js?
You could replace nodes global console.error() function with one implementation sending emails:
console.error = function(msg) { // send email // ... // additionaly log process.stderr.write(msg);};Then every call in every library made to console.error() would call your specific implementation send out mails ;)
Since all log entries are stored in a limited number of log files, in stead of trying to intercept all possible error events, why not just set up a file change monitor and have the new lines mailed to you? That way you can also schedule intervals with summary log entries of the last hour/day/... which will be a lot easier to go through, compared to opening separate mails.