OpenSpec Change: enterprise-exif

Change ID: enterprise-exif
Package: @suaveplan/exif
Category: universal
Target path: universal/media/exif
Status: PROPOSED
Date: 2026-04-19
Reference spec: /mnt/s/web/suaveplan/enterprise/exif.md

Summary

Greenfield rebuild of @suaveplan/exif — a comprehensive, dependency-free, runtime-agnostic metadata reader/writer/stripper for JPEG, PNG, WebP, TIFF, HEIC/ISOBMFF, and RAW images. Supports EXIF, XMP, IPTC, ICC, GPS, and MakerNotes (Apple, Canon, Nikon, Sony, incl. ciphered MakerNote decoders). The package's main-branch change openspec/changes/exif-migration is the most recent authoritative delta and is folded in here.

Current-state audit (genesis)

Package does not exist yet — fresh build. Main branch has universal/exif with 40+ exported primitives.

Dependencies

Workspace: none (leaf)
External (via catalog): zod, tslib, @opentelemetry/api
Dev (via catalog): vitest, @vitest/coverage-istanbul, fast-check, mitata

Preserved public surface (grouped)

Binary primitives

ByteReader, ByteWriter, ByteOrder, crc32, crc32Multi, md5, md5Hex, numberToRational, rationalToNumber, Rational.

Core dispatch

detectImageFormat, readMetadata, writeMetadata, stripMetadata, ReadOptions, StripOptions.

Format-specific

JPEG: readJpegSegments, writeJpegSegments. PNG: readPng, writePng. TIFF: readTiffMetadata, writeTiffMetadata. WebP: readWebp, writeWebp. ISOBMFF/HEIC: findAllBoxes, findBox, readBoxes, readFtypBrands, readIsobmffMetadata, writeIsobmffMetadata. RAW: detectRaw.

IFD engine

parseTiff, ParsedTiff, ParseOptions, buildTiff, BuildInput, IfdEntry, TiffType, decodeEntryValue, encodeEntryValue, entrySize, TIFF_TYPE, TIFF_TYPE_SIZE.

GPS, IPTC, XMP, ICC

GPS: decimalToDms, dmsToDecimal, formatDms, gpsToIsoTimestamp, isoToGpsFields, LatRef, LonRef. IPTC: readIptc, writeIptc. XMP: readXmp, writeXmp, XMP_NAMESPACES, namespaceFor. ICC: readIccProfile, writeIccProfile, validateIccProfile, classifyProfile, isSRGB, isAdobeRGB, isDisplayP3, profileDescription.

MakerNotes

decodeMakerNote, decodeAppleMakerNote, decodeBplist, decodeCanonMakerNote, decodeNikonMakerNote, nikonDecrypt, nikonEncrypt, sonyDecrypt, sonyEncrypt.

Types

ExifData, ExifIfd, ExifValue, IccCurve, IccDateTime, IccHeader, IccProfile, IccTagValue, IccText, IccXyz, ImageFormat, ISOBMFF_FAMILY, TIFF_FAMILY, ImageMetadata, CameraInfo, ExposureInfo, GpsCoordinates, LensInfo, IptcData, IptcValue, MakerNote, MakerNoteVendor, GpsPatch, MakerNotePatch, MetadataPatch, XmpData, XmpScalar, XmpStruct, XmpValue.

New genesis additions

Codes: EXIF.UNSUPPORTED_FORMAT, EXIF.PARSE_ERROR, EXIF.WRITE_FAILED, EXIF.INVALID_IFD, EXIF.BUFFER_OVERRUN.
Zod schemas for every wire-facing type: ExifDataSchema, ImageMetadataSchema, MetadataPatchSchema.
OTel histograms per format: exif.read.duration_ms{format}, exif.write.duration_ms{format}, exif.strip.duration_ms{format}.
Property tests: strip is idempotent; read→write→read yields equal metadata; GPS DMS↔decimal round-trip; numberToRational→rationalToNumber within tolerance.
Differential fuzzing harness against exifr for read parity on corpus of 1 000 real images.

Impact

Adds one new package: universal/media/exif
Adds one new spec capability: exif
Unblocks metadata, image, react-image (downstream waves).

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