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Default to StartProxyRemoveUnusedRegistries behaviour#3909

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mbg/ff/remove/StartProxyRemoveUnusedRegistries
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Default to StartProxyRemoveUnusedRegistries behaviour#3909
mbg wants to merge 1 commit into
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mbg/ff/remove/StartProxyRemoveUnusedRegistries

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@mbg mbg commented May 18, 2026

Removes the StartProxyRemoveUnusedRegistries and defaults to the new behaviour.

Risk assessment

For internal use only. Please select the risk level of this change:

  • Low risk: Changes are fully under feature flags, or have been fully tested and validated in pre-production environments and are highly observable, or are documentation or test only.

Which use cases does this change impact?

Workflow types:

  • Managed - Impacts users with dynamic workflows (Default Setup, Code Quality, ...).

Products:

  • Code Scanning - The changes impact analyses when analysis-kinds: code-scanning.
  • Code Quality - The changes impact analyses when analysis-kinds: code-quality.
  • Other first-party - The changes impact other first-party analyses.

Environments:

  • Dotcom - Impacts CodeQL workflows on github.com and/or GitHub Enterprise Cloud with Data Residency.

How did/will you validate this change?

  • Unit tests - I am depending on unit test coverage (i.e. tests in .test.ts files).
  • End-to-end tests - I am depending on PR checks (i.e. tests in pr-checks).

If something goes wrong after this change is released, what are the mitigation and rollback strategies?

  • Rollback - Change can only be disabled by rolling back the release or releasing a new version with a fix.

How will you know if something goes wrong after this change is released?

  • Telemetry - I rely on existing telemetry or have made changes to the telemetry.
    • Dashboards - I will watch relevant dashboards for issues after the release. Consider whether this requires this change to be released at a particular time rather than as part of a regular release.
    • Alerts - New or existing monitors will trip if something goes wrong with this change.

Are there any special considerations for merging or releasing this change?

  • No special considerations - This change can be merged at any time.

Merge / deployment checklist

  • Confirm this change is backwards compatible with existing workflows.
  • Consider adding a changelog entry for this change.
  • Confirm the readme and docs have been updated if necessary.

@mbg mbg self-assigned this May 18, 2026
@github-actions github-actions Bot added the size/S Should be easy to review label May 18, 2026
@mbg mbg marked this pull request as ready for review May 18, 2026 17:53
@mbg mbg requested a review from a team as a code owner May 18, 2026 17:53
Copilot AI review requested due to automatic review settings May 18, 2026 17:53
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Pull request overview

Removes the StartProxyRemoveUnusedRegistries feature flag and makes its behaviour the default, so unused registries are always skipped based on the language being analysed.

Changes:

  • Drop the feature flag and its featureConfig entry.
  • Remove the old LANGUAGE_TO_REGISTRY_TYPE and rename the NEW_* variant to LANGUAGE_TO_REGISTRY_TYPE; simplify getCredentials by removing the skipUnusedRegistries parameter.
  • Update start-proxy-action.ts to no longer query the flag, and adjust tests accordingly.
Show a summary per file
File Description
src/start-proxy.ts Consolidates registry mapping to one constant and removes the skipUnusedRegistries parameter from getCredentials.
src/start-proxy.test.ts Updates tests to match the new signature and removes the now-redundant Actions test case.
src/start-proxy-action.ts Removes the feature flag query and unused Feature import.
src/feature-flags.ts Removes the StartProxyRemoveUnusedRegistries enum value and config entry.
lib/upload-lib.js, lib/entry-points.js Generated JS reflecting the source changes.

Copilot's findings

  • Files reviewed: 4/6 changed files
  • Comments generated: 0

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