refactor(miniflare): use CorePaths for local explorer routes

[edmundhung]

Fixes #12686 (comment).

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• Tests
  • Tests included/updated
  • Automated tests not possible - manual testing has been completed as follows:
  • Additional testing not necessary because: covered by existing tests
• Public documentation
  • Cloudflare docs PR(s):
  • Documentation not necessary because: internal refactor

A picture of a cute animal (not mandatory, but encouraged)

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[changeset-bot]

🦋 Changeset detected

Latest commit: 98934ce

The changes in this PR will be included in the next version bump.

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[workers-devprod]

Codeowners approval required for this PR:

• ✅ @cloudflare/wrangler

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[github-actions]

⚠️ Issues found

File: .changeset/warm-foxes-shave.md

Issue: Changeset may not be required

The README states that "Changes that are purely internal refactoring with no user-facing impact" do not require a changeset. The description explicitly says these were internal constants ("All internal consumers now use CorePaths.EXPLORER directly"), suggesting they were never part of the public API. If LOCAL_EXPLORER_BASE_PATH and LOCAL_EXPLORER_API_PATH were not exported from the miniflare package's public entry point, this changeset should be removed rather than included.

If they were part of the public API (i.e., exported and usable by external consumers), then the changeset is warranted — but the version type should likely be minor (not patch), since removing exported symbols is a breaking change. Per the README, breaking changes to experimental/beta features can use minor rather than major, but the version type should reflect that impact.

Issue: Changelog description quality

The current description is written from an internal implementation perspective ("redundant aliases introduced before CorePaths was centralized"). A changelog entry should describe the user-facing impact. If this change does belong in the changelog, the description should clarify:

• Whether these were public API symbols
• What users (if any) need to do in response (e.g., migrate from the removed constants to CorePaths.EXPLORER)

Recommendation:

• If internal-only: remove the changeset entirely.
• If public API: update the version type to minor and rewrite the description to explain the migration path for consumers who used these constants.

[devin-ai-integration]

✅ Devin Review: No Issues Found

Devin Review analyzed this PR and found no potential bugs to report.

View in Devin Review to see 2 additional findings.

[ask-bonk]

UnknownError: "Internal server error"

github run

[ask-bonk]

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wrangler

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commit: 98934ce

[ask-bonk]

UnknownError: "Internal server error"

github run

[ask-bonk]

The tests import CorePaths from the source path ../../../src/workers/core/constants, while the fixture test imports it from the public miniflare package. Both are correct.

Let me now assess the changeset concern. Since LOCAL_EXPLORER_BASE_PATH and LOCAL_EXPLORER_API_PATH were publicly exported from the miniflare package but were never actually released (the restructuring that added them to the export list happened 2 days ago and no miniflare release has occurred since), this is effectively a pre-release change. The patch level is reasonable since these symbols never shipped in a published version.

LGTM

github run