AI / RenovateBot Interview Questions

What is Renovate's 'allowedVersions' configuration and how do you use it to restrict updates?

allowedVersions restricts which version ranges Renovate is permitted to update to. Any version outside the allowed range is silently ignored.

{
  "packageRules": [
    {
      "matchPackageNames": ["node"],
      "allowedVersions": "20"
    },
    {
      "matchPackageNames": ["react", "react-dom"],
      "allowedVersions": "<19"
    },
    {
      "matchPackageNames": ["django"],
      "allowedVersions": "/^(3\.2|4\.2)/"
    },
    {
      "matchPackageNames": ["kubernetes"],
      "allowedVersions": ">=28.0.0 <29.0.0"
    }
  ]
}

allowedVersions syntax
Syntax	Meaning
20	Only versions matching major 20 (20.x.x)
<19	Any version below 19.0.0
>=4.2.0 <5.0.0	Semver range
"/^4\.2/"	Regex match (wrapped in slashes)
!=1.0.0	Anything except exactly 1.0.0

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What is the difference between ignoreDeps and allowedVersions in Renovate?They are identical — both prevent PRs for a package

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ignoreDeps completely disables all updates for a package; allowedVersions still allows Renovate to raise PRs but restricts them to versions within the specified range

✓ Correct! Well done.

allowedVersions only works for npm; ignoreDeps works for all managers

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ignoreDeps is top-level only; allowedVersions only works inside packageRules

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How would you configure Renovate to only allow updates to Node.js versions within the 20.x LTS line?{"matchPackageNames": ["node"], "allowedVersions": ">=20.0.0 <21.0.0"}

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{"matchPackageNames": ["node"], "allowedVersions": "20"}

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Both A and B are correct — they produce equivalent results

✓ Correct! Well done.

{"matchPackageNames": ["node"], "ignoreDeps": ["21", "22"]}

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AI / RenovateBot Interview Questions

What is Renovate's 'allowedVersions' configuration and how do you use it to restrict updates?

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