51 lines
2.0 KiB
Markdown
51 lines
2.0 KiB
Markdown
# Format Lab
|
|
|
|
Explore conversion paths, state the expected preservation boundary, and measure
|
|
what a representative round trip actually changes. Format Lab is a local-first
|
|
module in the add·ideas Toolbox.
|
|
|
|
## v0.1.0 capabilities
|
|
|
|
- Browse directed format graphs for structured data, images, audio/video, and
|
|
subtitles
|
|
- Choose the properties that matter and rank bounded paths by expected loss,
|
|
conditional behaviour, unknowns, and conversion count
|
|
- Inspect every edge's availability and explicit caveat; routes are never called
|
|
lossless merely because no catalog loss is known
|
|
- Execute JSON, NDJSON, CSV, and a typed XML record-dialect conversion path over
|
|
a bounded canonical dataset
|
|
- Convert back to the source format and measure record/field order, names, scalar
|
|
types, nulls, nested values, numbers, and Unicode text
|
|
- Display catalog expectations beside measured evidence and mark metadata as
|
|
untested when it is outside the canonical model
|
|
- Export the target data and a deterministic evidence report containing the
|
|
catalog version, exact path, expectations, measurements, and notices
|
|
|
|
## Honest scope
|
|
|
|
The image, audio/video, and subtitle graphs are planning contracts linked to the
|
|
specialized Toolbox apps; v0.1.0 does not duplicate their codec or renderer
|
|
engines. Catalog statuses are conservative expectations, not measurements of a
|
|
particular file or encoder. The executable data lab supports records only—not
|
|
arbitrary JSON documents, XML mixed content/namespaces, or an external CSV type
|
|
schema. Its typed XML output is a documented lab interchange dialect.
|
|
|
|
Inputs are capped at 2 MiB, 10,000 records, 200 fields per record, 500,000
|
|
top-level values, and 8 MiB output. CSV cells are strings and spreadsheet-formula
|
|
prefixes are neutralized; the resulting semantic change is visible in the
|
|
round-trip measurement.
|
|
|
|
## Development
|
|
|
|
```sh
|
|
npm ci
|
|
npm run check
|
|
npm run test:browser
|
|
```
|
|
|
|
`npm run release:artifact` produces a deterministic ZIP and SHA-256 sidecar.
|
|
|
|
## License
|
|
|
|
GPL-3.0-or-later. See [LICENSE](LICENSE).
|