Does clinic.js works with Nextjs?

Expected Behavior

I have a project that is in Nextjs and Typescript. As we really need SEO, SSR is a must. However the project seems to be really slow and we are trying to dig in what is the root causes of the issue and I just found out about Clinic.js which seems to be a good tool for this.

When running the command: $ clinic doctor -- node dist/server/index.js I would expected to get the report from Clinicjs.

Current Behavior

Running the command: $ clinic doctor -- node dist/server/index.js ends with this result always:

`[=== ] Analysing dataundefined:1
[{"pid":94325,"tid":775,"ts":610333271714,"tts":142032,"ph":"E","cat":"v8","name":"V8.Execute","dur":0,"tExecute","dur":0,"tdur":0,"args":{"runtime-call-stats":{}}},{"pid":94326,"tid":775,"ts":610333454873,"tts":153118,"ph":"B","cat":"v8","name":"V8.Execute","dur":0,"tdur":0,"args":{}},{"pid":94326,"tid":775,"ts":610333454890,"tts":153135,"ph":"E","cat":"v8","name":"V8.Execute","dur":0,"tdur":0,"args":{"runtime-call-stats":{}}},{"pid":94326,"tid":775,"ts":610333467923,"tts":153165,"ph":"B","cat":"v8","name":"V8.Execute","dur":0,"tdur":0,"args":{}},{"pid":94326,"tid":775,"ts":610333468204,"tts":153446,"ph":"E","cat":"v8","name":"V8.Execute","dur":0,"tdur":0,"args":{"runtime-call-stats":{}}},{"pid":94326,"tid":775,"ts":610333468213,"tts":153454,"ph":"B","cat":"v8","name":"V8.Execute","dur":0,"tdur":0,"args":{}},{"pid":94326,"tid":775,"ts":610333468246,"tts":153488,"ph":"E","cat":"v8","name":"V8.Execute","dur":0,"tdur":0,"args":{"runtime-call-stats":{}}},{"pid":94326,"tid":775,"ts":610333468402,"tt

SyntaxError: Unexpected token , in JSON at position 113
    at JSON.parse (<anonymous>)
    at Parser._transform (/Users/user/.config/yarn/global/node_modules/@nearform/trace-events-parser/index.js:41:34)
    at Parser.Transform._read (_stream_transform.js:191:10)
    at Parser.Transform._write (_stream_transform.js:179:12)
    at doWrite (_stream_writable.js:441:12)
    at writeOrBuffer (_stream_writable.js:425:5)
    at Parser.Writable.write (_stream_writable.js:316:11)
    at TraceEventDecoder._transform (/Users/user/.config/yarn/global/node_modules/@nearform/doctor/format/trace-event-decoder.js:60:19)
    at TraceEventDecoder.Transform._read (_stream_transform.js:191:10)
    at TraceEventDecoder.Transform._write (_stream_transform.js:179:12)`

Environment

• Clinic.js version: v5.0.3

• Node.js version: v12.16.1 npm v6.13.4

• Operating system and version: MacOS Darwin local 19.5.0 Darwin Kernel Version 19.5.0.

[fillon]

Hi @afbarbaro

After making the change in next-dev-server.js, how do you run clinic ?

`clinic doctor --on-port --autocannon [ -c 2 -d 5 / ] – node ./node_modules/.bin/next dev ???

[DylanC]

@guimochila - Yes, that is correct! Child processes are not supported yet.