@plures/praxis

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@plures/praxis / index / attachToEngine

Function: attachToEngine()

attachToEngine<TContext>(store, engine): UnsubscribeFn

Defined in: src/integrations/pluresdb.ts:247

Attach a PraxisDBStore to a LogicEngine

This function creates a bidirectional connection between the store and engine:

• Events processed by the engine are persisted to the store
• Facts from the store are synchronized to the engine

Type Parameters

TContext

TContext = unknown

Parameters

store

PraxisDBStore<TContext>

The PraxisDBStore instance

engine

LogicEngine<TContext>

The LogicEngine instance

Returns

UnsubscribeFn

Cleanup function to detach the store

Example

const db = createInMemoryDB();
const registry = new PraxisRegistry();
const store = createPraxisDBStore(db, registry);
const engine = createPraxisEngine({ initialContext: {}, registry });

const detach = attachToEngine(store, engine);

// Events are now automatically persisted
engine.step([{ tag: "LOGIN", payload: { username: "alice" } }]);

// Cleanup
detach();