Reports fs.exists() to be blocking with Node V8.x

[gjegadesh]

I am surprised to see that fs.exists() blocks. Please clarify. Thanks

blocked-at V1.1.2
Node JS V8.9.4

[2018/07/03 11:25:45.933] [INFO] { blockedFor: 1054.224799987793,
stack:
[ ' at Object.fs.exists (fs.js:310:11)',
' at getXYZ (C:\dev\prj1\routes\XYZ.js:122:10)',
' at h.XYZ (C:\dev\prj1\routes\XYZ.js:69:37)',
' at Layer.handle [as handle_request] (C:\dev\prj1\node_modules\express\lib\router\layer.js:95:5)',
' at trim_prefix (C:\dev\prj1\node_modules\express\lib\router\index.js:312:13)',
' at C:\dev\prj1\node_modules\express\lib\router\index.js:280:7',
' at Function.process_params (C:\dev\prj1\node_modules\express\lib\router\index.js:330:12)',
' at next (C:\dev\prj1\node_modules\express\lib\router\index.js:271:10)',
' at SendStream.error (C:\dev\prj1\node_modules\serve-static\index.js:121:7)',
' at emitOne (events.js:116:13)',
' at SendStream.emit (events.js:211:7)',
' at SendStream.error (C:\dev\prj1\node_modules\send\index.js:275:17)',
' at SendStream.onStatError (C:\dev\prj1\node_modules\send\index.js:392:12)',
' at onstat (C:\dev\prj1\node_modules\send\index.js:674:26)',
' at FSReqWrap.oncomplete (fs.js:152:21)' ] }

[naugtur]

It doesn't block, so this is a false positive.
Would you be so kind to try and add a PR with a testcase for this?

[yyfearth]

I think it has false positive on async and await.