Profiling crashes because node_modules/0x/lib/preload/no-cluster/package.json is not found and then in the logs

[RunOrVeith]

I have installed 0x using pnpm install -g 0x. The installed version is 5.7.0. (And I am using node v20.9.0, npx 10.1.0, pnpm 8.6.6)

I am trying to profile a typescript file like this 0x -- npx tsx debug.ts. I can run the script successfully using npx tsx debug.ts.

When using 0x, I get the following error:

🔥  Profilingnpm ERR! code ENOENT
npm ERR! syscall open
npm ERR! path /home/veith/.local/share/pnpm/global/5/.pnpm/0x@5.7.0/node_modules/0x/lib/preload/no-cluster/package.json
npm ERR! errno -2
npm ERR! enoent ENOENT: no such file or directory, open '/home/veith/.local/share/pnpm/global/5/.pnpm/0x@5.7.0/node_modules/0x/lib/preload/no-cluster/package.json'
npm ERR! enoent This is related to npm not being able to find a file.
npm ERR! enoent 

npm ERR! A complete log of this run can be found in: /home/veith/.npm/_logs/2024-03-12T15_21_50_704Z-debug-0.log
Target subprocess error, code: 254
🔥  Process exited, generating flamegraphTypeError [ERR_INVALID_ARG_TYPE]: 
🚫  The "path" argument must be of type string. Received undefined
    at new NodeError (node:internal/errors:406:5)
    at validateString (node:internal/validators:162:11)
    at join (node:path:1175:7)
    at /home/veith/.local/share/pnpm/global/5/.pnpm/0x@5.7.0/node_modules/0x/index.js:89:27
    at process.processTicksAndRejections (node:internal/process/task_queues:95:5)
    at async zeroEks (/home/veith/.local/share/pnpm/global/5/.pnpm/0x@5.7.0/node_modules/0x/index.js:46:43)
    at async cmd (/home/veith/.local/share/pnpm/global/5/.pnpm/0x@5.7.0/node_modules/0x/cmd.js:98:21) {
  code: 'ERR_INVALID_ARG_TYPE'
}
node:internal/errors:497
    ErrorCaptureStackTrace(err);
    ^

TypeError [ERR_INVALID_ARG_TYPE]: The "code" argument must be of type number. Received type string ('ERR_INVALID_ARG_TYPE')
    at process.set [as exitCode] (node:internal/bootstrap/node:123:9)
    at process.exit (node:internal/process/per_thread:188:24)
    at /home/veith/.local/share/pnpm/global/5/.pnpm/0x@5.7.0/node_modules/0x/cmd.js:26:13
    at process.processTicksAndRejections (node:internal/process/task_queues:95:5) {
  code: 'ERR_INVALID_ARG_TYPE'
}

The content of the mentioned logfile /home/veith/.npm/_logs/2024-03-12T15_21_50_704Z-debug-0.log is

0 verbose cli /home/veith/.nvm/versions/node/v20.9.0/bin/node /home/veith/.nvm/versions/node/v20.9.0/lib/node_modules/npm/bin/npm-cli.js
1 info using npm@10.1.0
2 info using node@v20.9.0
3 timing npm:load:whichnode Completed in 1ms
4 timing config:load:defaults Completed in 1ms
5 timing config:load:file:/home/veith/.nvm/versions/node/v20.9.0/lib/node_modules/npm/npmrc Completed in 1ms
6 timing config:load:builtin Completed in 1ms
7 timing config:load:cli Completed in 2ms
8 timing config:load:env Completed in 0ms
9 timing config:load:file:/home/veith/projects/automagically/ts/apps/next-automagically/.npmrc Completed in 0ms
10 timing config:load:project Completed in 4ms
11 timing config:load:file:/home/veith/.npmrc Completed in 0ms
12 timing config:load:user Completed in 0ms
13 timing config:load:file:/home/veith/.nvm/versions/node/v20.9.0/etc/npmrc Completed in 0ms
14 timing config:load:global Completed in 0ms
15 timing config:load:setEnvs Completed in 1ms
16 timing config:load Completed in 9ms
17 timing npm:load:configload Completed in 9ms
18 timing config:load:flatten Completed in 2ms
19 timing npm:load:mkdirpcache Completed in 0ms
20 timing npm:load:mkdirplogs Completed in 0ms
21 verbose title npm exec /home/veith/.local/share/pnpm/global/5/.pnpm/0x@5.7.0/node_modules/0x/lib/preload/no-cluster /home/veith/.local/share/pnpm/global/5/.pnpm/0x@5.7.0/node_modules/0x/lib/preload/redir-stdout /home/veith/.local/share/pnpm/global/5/.pnpm/0x@5.7.0/node_modules/0x/lib/preload/soft-exit tsx debug.ts
22 verbose argv "exec" "--prof" "--logfile" "/home/veith/projects/automagically/ts/apps/next-automagically/debug/%p-v8.log" "--print-opt-source" "-r" "/home/veith/.local/share/pnpm/global/5/.pnpm/0x@5.7.0/node_modules/0x/lib/preload/no-cluster" "-r" "/home/veith/.local/share/pnpm/global/5/.pnpm/0x@5.7.0/node_modules/0x/lib/preload/redir-stdout" "-r" "/home/veith/.local/share/pnpm/global/5/.pnpm/0x@5.7.0/node_modules/0x/lib/preload/soft-exit" "--" "tsx" "debug.ts"
23 timing npm:load:setTitle Completed in 1ms
24 timing npm:load:display Completed in 0ms
25 verbose logfile logs-max:10 dir:/home/veith/.npm/_logs/2024-03-12T15_21_50_704Z-
26 verbose logfile /home/veith/.npm/_logs/2024-03-12T15_21_50_704Z-debug-0.log
27 timing npm:load:logFile Completed in 6ms
28 timing npm:load:timers Completed in 0ms
29 timing npm:load:configScope Completed in 0ms
30 timing npm:load Completed in 28ms
31 silly logfile start cleaning logs, removing 1 files
32 silly logfile done cleaning log files
33 timing arborist:ctor Completed in 0ms
34 timing command:exec Completed in 6824ms
35 verbose stack Error: ENOENT: no such file or directory, open '/home/veith/.local/share/pnpm/global/5/.pnpm/0x@5.7.0/node_modules/0x/lib/preload/no-cluster/package.json'
36 verbose cwd /home/veith/projects/automagically/ts/apps/next-automagically/debug
37 verbose Linux 6.5.0-25-generic
38 verbose node v20.9.0
39 verbose npm  v10.1.0
40 error code ENOENT
41 error syscall open
42 error path /home/veith/.local/share/pnpm/global/5/.pnpm/0x@5.7.0/node_modules/0x/lib/preload/no-cluster/package.json
43 error errno -2
44 error enoent ENOENT: no such file or directory, open '/home/veith/.local/share/pnpm/global/5/.pnpm/0x@5.7.0/node_modules/0x/lib/preload/no-cluster/package.json'
45 error enoent This is related to npm not being able to find a file.
45 error enoent
46 verbose exit -2
47 timing npm Completed in 6965ms
48 verbose code -2
49 error A complete log of this run can be found in: /home/veith/.npm/_logs/2024-03-12T15_21_50_704Z-debug-0.log

What is the problem here? The file it is looking for is indeed not there. There is only /home/veith/.local/share/pnpm/global/5/.pnpm/0x@5.7.0/node_modules/0x/lib/preload/no-cluster.js, with contents

const cluster = require('cluster')

cluster.on('fork', () => {
  throw new Error('0x does not support clustering.')
})

I added a console.log in 0x/index.js:89 where the error during logging is thrown to see the args, which seems fine:

{
  _: [],
  open: false,
  o: false,
  version: false,
  v: false,
  help: false,
  h: false,
  quiet: false,
  q: false,
  silent: false,
  s: false,
  treeDebug: false,
  'tree-debug': false,
  kernelTracingDebug: false,
  'kernel-tracing-debug': false,
  kernelTracing: false,
  'kernel-tracing': false,
  collectOnly: false,
  'collect-only': false,
  writeTicks: false,
  'write-ticks': false,
  D: '/tmp/profile-{timestamp}',
  outputDir: '/tmp/profile-{timestamp}',
  '--': [ 'tsx', 'debug.ts' ],
  workingDir: '/home/veith/projects/automagically/ts/apps/next-automagically/debug',
  status: [Function (anonymous)],
  argv: [ 'tsx', 'debug.ts' ],
  pathToNodeBinary: 'npx',
  name: 'flamegraph',
  onProcessExit: [Function: noop],
  collectDelay: 0,
  title: 'node tsx debug.ts',
  pid: 197976
}

The actual in the logging errors issues seems to be that in index.js:89, this v8.getIsolateLog(args.workingDir, args.pid) returns undefined and join can't deal with that.

So what causes these 2 issues?

Thanks!

[luislobo]

I am having the exact same issue

[mcollina]

You should compile your ts before running it with 0x.

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