[BUG] devDependencies considered for minimum version despite --omit-dev

[Sainan]

Is there an existing issue for this?

• I have searched the existing issues

This issue exists in the latest npm version

• I am using the latest npm

Current Behavior

When running npm i --omit=dev in a project with devDependencies requiring newer versions of Node/NPM, e.g. @typescript/native-preview the install will fail on older Node versions despite the fact that this is completely irrelevant to the elected package tree.

Expected Behavior

Minimum version is computed without dev dependencies -> install succeeds.

Steps To Reproduce

1. When using Node <20.6.0
2. In a project where devDependencies contains e.g. "@typescript/native-preview": "7.0.0-dev.20250523.1"
3. Run npm i --omit=dev

npm error code EBADENGINE
npm error engine Unsupported engine
npm error engine Not compatible with your version of node/npm: @typescript/native-preview@7.0.0-dev.20250523.1
npm error notsup Not compatible with your version of node/npm: @typescript/native-preview@7.0.0-dev.20250523.1
npm error notsup Required: {"node":">=20.6.0"}
npm error notsup Actual:   {"npm":"10.8.2","node":"v18.20.5"}

Environment

N/A

[owlstronaut]

Thank you for the report @Sainan. I agree with the assumption that omitted dependencies shouldn't affect the engine check. I've done some code improvements and added that extra check in #8372. We'll see what the team says.