XTL Implementations
Implementations of the XTL spec. xl3 is the reference implementation.
| Language | Repo | Package | Spec version | Conformance | Notes |
|---|---|---|---|---|---|
| TypeScript | jinyoung4478/xl3 | @jinyoung4478/xl3 | XTL 0.1 (draft) | reference; 119/119 fixtures pass (113 Stage 1 + 6 Stage 2) | Browser + Node ≥ 20.12; runner via npx xl3-conformance; 3-TZ matrix in CI |
| Python | jinyoung4478/xl3-py | (unpublished) | XTL 0.1 (draft) | draft, in development | Tracked alongside the reference impl; drop a --report=json artifact under conformance/reports/ and npm run conformance:dashboard will pick it up |
Adding an implementation
Read PORTERS_GUIDE.md first — it distinguishes
spec-normative requirements from TS-impl-incidental details and gives
a recommended development order keyed to the conformance corpus.
To list a port here:
- Implement enough of XTL 0.1 to pass the conformance fixtures you target.
- Run your impl against
conformance/followingconformance/runner-protocol.md. - Open a PR adding a row to the table above with: language, package URL, spec version targeted, conformance status (full / partial / N of M fixtures).
Ports under active development are welcome — link your in-progress repo even if conformance is partial.
Spec compliance levels
- reference — this implementation. Definitionally conformant for its declared spec version.
- full — passes all conformance fixtures for the declared spec version.
- partial (N/M) — passes N of M fixtures. List the categories of fixtures not yet supported.
- draft — early WIP, not yet running conformance.