next.js: Memory Leak with Next.js's global fetch. Tested against http module

Link to the code that reproduces this issue

https://github.com/m-rphy/nextMemoryLeak

To Reproduce

1. In one terminal and cd into the /express_server and run npm start

2. In a sperate teminal cd in /next_app and run npm run inspect

3. Using any browser go to either http://localhost:3000/start-fetch or http://localhost:3000/start-custom-fetch to begin the requests.

4. Then open chrome inspect (chrome://inspect) or use any other debugging tools.

I believe this is ticket is also relevant - but this repo reproduces it with and avoids it -> #54708

Current vs. Expected behavior

Next.js’s global fetch is holding onto performance metrics or some other data that is leading to heap growth after every requests.

The heap should not grow after the scope closes.

Provide environment information

Operating System:
  Platform: darwin
  Arch: arm64
  Version: Darwin Kernel Version 23.4.0: Fri Mar 15 00:12:49 PDT 2024; root:xnu-10063.101.17~1/RELEASE_ARM64_T6020
  Available memory (MB): 16384
  Available CPU cores: 10
Binaries:
  Node: 20.10.0
  npm: 10.2.3
  Yarn: N/A
  pnpm: N/A
Relevant Packages:
  next: 14.2.0-canary.62 // Latest available version is detected (14.2.0-canary.62).
  eslint-config-next: 14.1.4
  react: 18.2.0
  react-dom: 18.2.0
  typescript: 5.4.4
Next.js Config:
  output: N/A

Which area(s) are affected? (Select all that apply)

Not sure, Data fetching (gS(S)P, getInitialProps)

Which stage(s) are affected? (Select all that apply)

next dev (local), next build (local), next start (local), Other (Deployed)

Additional context

I’ve tested this repo against different canary releases (canary-32 and canary-62), as well as Next.js lts. I haven’t been able to find a version that works.