## Summary
- Fixed `assert.partialDeepStrictEqual` to correctly handle Map subset
checking
- Previously, Map comparison used `Bun.deepEquals` which required exact
equality
- Now properly checks that all entries in the expected Map exist in the
actual Map with matching values
Fixes#24338
## Test plan
- Added comprehensive test suite in
`test/regression/issue/24338.test.ts` covering:
- Basic subset checking (key2 in Map with key1 and key2)
- Exact match cases
- Empty expected Map
- Multiple matching entries
- Nested objects as values
- Failure cases when expected has more keys
- Failure cases when key is missing in actual
- Failure cases when values differ
- Nested Map values
- Non-string keys
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Co-authored-by: Claude Bot <claude-bot@bun.sh>
Co-authored-by: Claude Opus 4.5 <noreply@anthropic.com>
