import type { Observation, Session, SessionSummary } from "../types";
/** Map of event names to their payload types. */
export type MemoryEventMap = {
    "observation:created": Observation;
    "observation:updated": Observation;
    "session:started": Session;
    "session:ended": Session;
    "summary:created": SessionSummary;
    "pending:enqueued": number;
    "pending:processed": number;
};
/** Union of all valid memory event names. */
export type MemoryEventName = keyof MemoryEventMap;
/** Typed event emitter for memory repository change notifications. */
export interface MemoryEventBus {
    on<K extends MemoryEventName>(event: K, listener: (payload: MemoryEventMap[K]) => void): this;
    off<K extends MemoryEventName>(event: K, listener: (payload: MemoryEventMap[K]) => void): this;
    once<K extends MemoryEventName>(event: K, listener: (payload: MemoryEventMap[K]) => void): this;
    emit<K extends MemoryEventName>(event: K, payload: MemoryEventMap[K]): boolean;
    removeAllListeners(event?: MemoryEventName): this;
    listenerCount(event: MemoryEventName): number;
}
/** Create a new typed event bus backed by Node's EventEmitter. */
export declare function createEventBus(): MemoryEventBus;
//# sourceMappingURL=bus.d.ts.map