ESLint Plugin: strip prerelease tags from resolved min Grafana version

[tolzhabayev]

Summary

• semver.minVersion(">=11.0.0-0") returns "11.0.0-0", which doesn't exist on npm. The eslint rule then fails when trying to download Grafana types for that version.
• Use semver.coerce() to strip prerelease/build metadata, so the rule resolves to the correct stable package version (e.g. 11.0.0).
• Add unit tests for getMinSupportedVersionFromPackageJson and getMinSupportedGrafanaVersion.

Fixes the CI failure seen in https://github.com/grafana/clock-panel/actions/runs/22856422998/job/66297907427?pr=507

Test plan

• Existing importIsCompatible tests pass
• New minGrafanaVersion tests cover prerelease stripping (>=11.0.0-0 → 11.0.0, >=11.1.0-beta.1 → 11.1.0), standard ranges, and error cases

[github-actions]

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[Copilot]

Pull request overview

Adjusts the eslint-plugin rule’s resolved minimum Grafana version to avoid prerelease/build tags (e.g. 11.0.0-0) that don’t map to published npm versions, and adds unit tests for the version-resolution helpers.

Changes:

• Coerce semver.minVersion(...) results to a stable x.y.z version via semver.coerce() in getMinSupportedVersionFromPackageJson.
• Add Vitest unit tests covering prerelease stripping and option-vs-fallback behavior for getMinSupportedGrafanaVersion.

Reviewed changes

Copilot reviewed 2 out of 2 changed files in this pull request and generated 2 comments.

File	Description
packages/eslint-plugin-plugins/src/rules/minGrafanaVersion.ts	Coerces resolved minimum Grafana version to remove prerelease/build metadata.
packages/eslint-plugin-plugins/src/rules/minGrafanaVersion.test.ts	Adds unit tests for min-version resolution and context option fallback behavior.

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[Copilot]

vi.spyOn(semver, 'minVersion').mockReturnValue(semver.minVersion(range)) calls semver.minVersion(range) after the spy is installed (argument evaluation happens after spyOn), so it will invoke the mocked function and typically return undefined. This makes the test fail (the implementation will treat it like a missing minVersion). Compute the real minVersion before installing the spy, or return a constructed SemVer instance (e.g. new semver.SemVer(...)) instead of calling semver.minVersion inside mockReturnValue.

[Copilot]

Same issue as above: vi.spyOn(semver, 'minVersion').mockReturnValue(semver.minVersion('>=11.0.0')) will evaluate semver.minVersion(...) after minVersion has been spied on, so it will call the mock instead of the real implementation and likely return undefined. Compute the value before spying (or return a SemVer instance) so the fallback-path test is deterministic.

[sunker]

Nice

[grafana-plugins-platform-bot]

🚀 PR was released in @grafana/create-plugin@7.0.7, @grafana/eslint-plugin-plugins@0.6.4, @grafana/plugin-docs-cli@0.0.8, website@5.5.2 🚀