suaveplan/openspec/archive/2026-05-02-bitpacker-stub-completion/AUDIT_2026-05-02.md

Audit re-confirmation — 2026-05-02

This audit re-walks the gap that prompted the bitpacker-stub-completion change for the @suaveplan/bitpacker-compressed package and confirms the parent change still covers the required scope. No new change folder was created.

What was re-audited

• packages/bitpacker/bitpacker-compressed/src/ (genesis): 61 LOC stub with the self-described "placeholder for a more sophisticated compression algorithm" comment, exporting only compressRle / decompressRle. Confirmed verbatim against the genesis tree on 2026-05-02.
• packages/universal/bitpacker/src/compressed/ (legacy): full CompressedBitPacker<T> extends BitPacker<T> (327 LOC, bitpacker.ts) plus CompressionRegistry with NoCompressionAdapter, GzipCompressionAdapter, DeflateCompressionAdapter (336 LOC, compression.ts). Confirmed against the legacy tree on 2026-05-02.

The audit instruction was: if the parent change bitpacker-stub-completion already covers bitpacker-compressed work in detail, skip creating a redundant bitpacker-compressed-codecs change and instead drop a re-confirmation note here.

Findings

The parent change covers the gap in full. Specifically:

• proposal.md lines 39-46 spell out every requirement on the package — CompressedBitPacker<T>, CompressionAdapter interface, CompressionRegistry class, the three built-in adapters (NoCompressionAdapter, GzipCompressionAdapter, DeflateCompressionAdapter), and the compressData / decompressData async helpers — plus the explicit retention of compressRle / decompressRle for the bytes-only fast path.
• proposal.md Source-mapping table cites the exact upstream files and line ranges (compressed/bitpacker.ts L1-L327; compressed/compression.ts L1-L336; compressed/compression.ts L75-L120).
• specs/bitpacker-compressed/spec.md authors four ADDED requirements — CompressedBitPacker subclass, CompressionAdapter contract and built-in adapters, CompressionRegistry replacement and unknown-algorithm error, Compression failure surfaces coded error — every one carrying a **Verified by:** line.
• tasks.md (parent change) drives implementation, tests, docs, and pre-archive verification for the package.

The parent change is in openspec/changes/ (active, not archived). Its scope is sufficient.

Recommendation

Do not author a separate bitpacker-compressed-codecs change. The implementer working bitpacker-stub-completion should pick up the @suaveplan/bitpacker-compressed portion as written.

If bitpacker-stub-completion is ever archived without shipping the bitpacker-compressed portion (e.g. the change is split into per-package branches), open bitpacker-compressed-codecs then with the requirements above lifted directly from this parent change's spec delta. The four ADDED requirements in specs/bitpacker-compressed/spec.md are ready to be carried forward verbatim.

Pointer

Parent change: openspec/changes/bitpacker-stub-completion/ Spec delta for this package: openspec/changes/bitpacker-stub-completion/specs/bitpacker-compressed/spec.md