Source Map
If you use BabelJS, Typescript or any other Javascript superset you may have noticed that when an exception occurs, the stacktrace is not meaningful at all. To get interesting informations you need to generate source map files.
Once these source map files are generated, PM2 will automatically detects them and will help you inspect errors.
PM2 automatically detects javascript source map files if the file you start (let’s say app.js) has his map equivalence (e.g app.js.map).
Inspect exceptions
Exceptions are logged into your application error log file.
To check your logs to detect exceptions, you simply have to type:
pm2 logs main
Or use PM2+ to get emailed and get exceptions analysis when it happens
Disable source map support
If you do not want PM2 to automatically support javascript source map you can use the option --disable-source-map-support.
It can be done both via CLI and via JSON file.