@livefolio/sdkTypeScript SDK for tactical allocation strategies

Declarative TacticalSpec, pluggable runtime layers, content-addressed feature cache.

Spec-driven strategies

Author strategies as plain JSON-shaped TacticalSpecs. Same spec drives backtests today and live execution tomorrow — no rewrites.

DataFeed, Executor, Calendar, and FeatureCache are interfaces. Reference impls ship in the box. Swap any layer without touching strategy code.

Indicators are keyed by (spec, asset, date). Cache hits across runs. MemoryFeatureCache for in-process; bring your own for cross-process.

NYSE (1885+) and LSE (1801+) calendars ported from pandas_market_calendars — era-varying weekmasks, special closes, royal events, the lot.

A 5.5-year regression gate proves the v0.4 dialect emits identical target weights to the v0.3 fluent API on the canonical SPY/QQQ/IEF strategy.

Strict TypeScript, ES modules, no untyped escape hatches. Strategies, features, and orders all carry their generic shape through the runtime.