Capability Spec Delta: audio-metadata (audio-shipped-file-size-cleanup)

Package: @suaveplan/audio-metadata Status: PROPOSED

Every requirement below carries a **Verified by:** line at authoring time. No exceptions.

MODIFIED Requirements

Requirement: id3v2 parser source modules respect the 300-line cap

The ID3v2 parser implementation MUST be split such that no single .ts file under src/parsers/id3v2/ exceeds the 300-line hard cap. The public function export parseId3v2 SHALL remain available from @suaveplan/audio-metadata with its existing signature and observable behavior across every supported frame type (T... text frames, TXXX user-defined text, W... URL frames, APIC attached picture, UFID file identifier, COMM comments, USLT lyrics, GEOB general encapsulated object) and every supported text encoding (ISO-8859-1, UTF-16, UTF-16BE, UTF-8) with unsynchronisation reversal applied where the header flag is set.

Scenario: every id3v2 source file is at or under the 300-line cap

WHEN find packages/audio/audio-metadata/src/parsers/id3v2 -name "*.ts" ! -name "*.test.ts" | xargs awk 'END { if (NR > 300) print FILENAME, NR }' is run
THEN the output is empty

Scenario: id3v2 fixture parses are unchanged

WHEN parseId3v2 is invoked on the existing fixture set used by id3v2.test.ts
THEN every parse result is deep-equal to the pre-split result

Verified by: src/parsers/id3v2/id3v2.test.ts::"every supported v2.4 fixture parses to the documented shape" AND tests/file-size.test.ts::"every id3v2 src file is under 300 lines"

Requirement: id3v2 test modules respect the 500-line cap

The ID3v2 test suite MUST be split such that no single *.test.ts file under src/parsers/id3v2/ exceeds the 500-line hard cap. The aggregate test count across the split files SHALL be greater than or equal to the pre-split count. The residual id3v2.test.ts SHALL hold end-to-end fixture-parse cases; per-frame-family and per-encoding cases SHALL move to sibling files named after the family they cover.

Scenario: every id3v2 test file is at or under the 500-line cap

WHEN find packages/audio/audio-metadata/src/parsers/id3v2 -name "*.test.ts" | xargs awk 'END { if (NR > 500) print FILENAME, NR }' is run
THEN the output is empty

Verified by: tests/file-size.test.ts::"every id3v2 test file is under 500 lines" AND tests/exports.test.ts::"aggregate id3v2 test count is greater than or equal to pre-split"

Requirement: mp4-atom parser modules respect the size caps

The MP4 atom parser implementation MUST be split such that no .ts source file under src/parsers/mp4-atom/ exceeds the 300-line cap and no .test.ts file exceeds the 500-line cap. The public function export parseMp4Atom SHALL remain available from @suaveplan/audio-metadata with its existing signature and observable behavior across container atoms (ftyp, moov, mvhd, mdat, ilst) and iTunes metadata sub-atoms.

Scenario: every mp4-atom source file is at or under the 300-line cap

WHEN find packages/audio/audio-metadata/src/parsers/mp4-atom -name "*.ts" ! -name "*.test.ts" | xargs awk 'END { if (NR > 300) print FILENAME, NR }' is run
THEN the output is empty

Scenario: every mp4-atom test file is at or under the 500-line cap

WHEN find packages/audio/audio-metadata/src/parsers/mp4-atom -name "*.test.ts" | xargs awk 'END { if (NR > 500) print FILENAME, NR }' is run
THEN the output is empty

Verified by: tests/file-size.test.ts::"every mp4-atom src file is under 300 lines" AND tests/file-size.test.ts::"every mp4-atom test file is under 500 lines"

Requirement: ogg-vorbis test modules respect the 500-line cap

The Ogg-Vorbis test suite MUST be split such that no *.test.ts file under src/parsers/ogg-vorbis/ exceeds the 500-line hard cap. The aggregate test count across the split files SHALL be greater than or equal to the pre-split count. The source file is already within cap and is unchanged.

Scenario: every ogg-vorbis test file is at or under the 500-line cap

WHEN find packages/audio/audio-metadata/src/parsers/ogg-vorbis -name "*.test.ts" | xargs awk 'END { if (NR > 500) print FILENAME, NR }' is run
THEN the output is empty

Verified by: tests/file-size.test.ts::"every ogg-vorbis test file is under 500 lines"

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