"MaxListenersExceededWarning: Possible EventEmitter memory leak detected" when downloading

[kjozwiak]

Description

When downloading files using 0.22.6 e6ff4ea, you'll get the following error in the terminal/command prompt:

(node:74390) MaxListenersExceededWarning: Possible EventEmitter memory leak detected. 11 removed listeners added. Use emitter.setMaxListeners() to increase limit
MaxListenersExceededWarning: Possible EventEmitter memory leak detected. 11 removed listeners added. Use emitter.setMaxListeners() to increase limit
    at _addListener (events.js:262:19)
    at DownloadItem.addListener (events.js:279:10)
    at DownloadItem.<anonymous> (/Applications/Brave-Beta.app/Contents/Resources/app.asar/app/filtering.js:596:12)
    at emitTwo (events.js:106:13)
    at DownloadItem.emit (events.js:194:7)

Steps to Reproduce

1. install/launch 0.22.6 e6ff4ea via the terminal/command prompt
2. visit https://github.com/brave/browser-laptop/releases
3. initiate a download

Actual result:

Brave displaying node:74390) MaxListenersExceededWarning: Possible EventEmitter memory leak detected. errors when downloading files.

Expected result:

Brave shouldn't be displaying node:74390) MaxListenersExceededWarning: Possible EventEmitter memory leak detected. errors when downloading files.

Reproduces how often:

100% reproducible using the above STR.

Brave Version

about:brave info:

Brave: 0.22.6
V8: 6.5.254.36
rev: e6ff4ea
libchromiumcontent: 65.0.3325.162
Muon: 5.1.0
OS Release: 17.4.0
Update Channel: Beta
OS Architecture: x64
OS Platform: macOS
Node.js: 7.9.0
Brave Sync: v1.4.2

Reproducible on current live release:

Yes, currently reproducible using 0.21.24 19c78a1 which is the latest released build.

Additional Information

• macOS - reproduced by @LaurenWags and myself
• Win 10 x64 - reproduced by @srirambv
• Ubuntu - reproduced by @btlechowski

[bsclifton]

Fixed in 0.23.x with #12909
cc: @petemill

[bsclifton]

Duplicate of #9643