Make node show stack trace after EventEmitter warning

Question

I have this error:

(node:11164) Warning: Possible EventEmitter memory leak detected. 11 end listeners added. Use emitter.setMaxListeners() to increase limit
         


        

Answer 1

This changed with Node v6 (or possibly with v5).

Previously, a stack trace was shown automatically, now you have to generate one yourself:

process.on('warning', e => console.warn(e.stack));

Documented here.