Lab Trajectory Explorer — Web (TypeScript port)

Client-side, no-install browser port of the Streamlit app. All parsing and computation runs in the browser; no data leaves the machine.

Develop

This project uses pnpm (pinned via the packageManager field; run corepack enable once to let Node provision it automatically).

cd web
pnpm install
pnpm dev         # http://localhost:5173
pnpm test        # vitest (core + IO + parity)
pnpm build       # static site -> web/dist/

Parity with the Python core

The numeric/IO core is a port of the analyses Python package. Parity is enforced by golden fixtures generated from the Python source:

# from the repo root, in the Python env that has `analyses` installed
python web/scripts/gen_goldens.py

This regenerates web/tests/goldens/*.json, which the tests/parity/* suites assert against within float tolerance (fitOls) or exact equality (parseWert). Regenerate after changing any ported Python kernel, then re-run pnpm test.

License

MIT © 2026 Jan-Paul Lerch