MoonBit Refactoring Skill

Intent

• Preserve behavior and public contracts unless explicitly changed.
• Minimize the public API to what callers require.
• Prefer declarative style and pattern matching over incidental mutation.
• Use view types (ArrayView/StringView/BytesView) to avoid copies.
• Add tests and docs alongside refactors.

Workflow

Start broad, then refine locally:

1. Architecture first: Review package structure, dependencies, and API boundaries.
2. Inventory public APIs and call sites (moon ide doc, moon ide find-references).
3. Pick one refactor theme (API minimization, package splits, pattern matching, loop style).
4. Apply the smallest safe change.
5. Update docs/tests in the same patch.
6. Run moon check, then moon test.
7. Use coverage to target missing branches.