Some JavaScript chunks missing integrity attribute in production build

[lance-shuai]

Link to the code that reproduces this issue

https://github.com/lance-shuai/next-sri-test

To Reproduce

Create a new Next.js project
Enable SRI in next.config.js:
npm run build
npm run start

Current vs. Expected behavior

When building Next.js app in production mode with SRI enabled, I noticed that some JavaScript chunks are missing the integrity attribute in their script tags, while others have it properly set.

Provide environment information

/bin/sh: yarn: command not found

Operating System:
  Platform: darwin
  Arch: arm64
  Version: Darwin Kernel Version 24.1.0: Thu Oct 10 21:06:57 PDT 2024; root:xnu-11215.41.3~3/RELEASE_ARM64_T6041
  Available memory (MB): 24576
  Available CPU cores: 12
Binaries:
  Node: 20.18.3
  npm: 10.8.2
  Yarn: N/A
  pnpm: 10.4.0
Relevant Packages:
  next: 15.2.0 // Latest available version is detected (15.2.0).
  eslint-config-next: N/A
  react: 19.0.0
  react-dom: 19.0.0
  typescript: 5.8.2
Next.js Config:
  output: N/A

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

Output

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

next start (local)

Additional context

No response