This repository demonstrates a compatibility issue between Jest v30 and synckit@0.11.10.

synckit@0.11.10 (released July 18, 2025) introduced a breaking change that causes Jest v30 tests to fail with a createRequire TypeError.

TypeError: The argument 'filename' must be a file URL object, file URL string, or absolute path string. Received 'http://localhost/index.cjs'
    at Function.createRequire (node_modules/jest-runtime/build/index.js:1407:23)
    at Object.<anonymous> (node_modules/@pkgr/core/lib/index.cjs:10:48)
    at Object.<anonymous> (node_modules/synckit/lib/index.cjs:30:29)

1. June 1, 2025: @pkgr/core@0.3.0 introduced breaking changes with Jest's createRequire implementation
2. July 18, 2025: synckit@0.11.10 updated its dependency range to allow @pkgr/core@0.3.x
3. Dependency chain: Jest → jest-snapshot → synckit → @pkgr/core

1. Comment out or remove the pnpm override from package.json
2. Delete pnpm-lock.yaml
3. Run pnpm install
4. Run nx test test or jest - tests will fail

1. Keep the pnpm override in package.json: "synckit": "0.11.9"
2. Run pnpm install
3. Run nx test test or jest - tests pass

The package.json includes a pnpm override to pin synckit to the last working version:

{
  "pnpm": {
    "overrides": {
      "synckit": "0.11.9"
    }
  }
}

• synckit: 0.11.10 (broken), 0.11.9 (works)
• Jest: 30.0.2
• NX: 21.3.0
• Node.js: Latest
• Package manager: pnpm (affects all package managers)

You can also pin the deeper dependency:

{
  "pnpm": {
    "overrides": {
      "@pkgr/core": "0.2.9"
    }
  }
}

• synckit repository
• Jest createRequire issues
• This repository