import type { StreamLifecycleFrame } from "../streaming/lifecycle/index.js";
import { type ConversationRunEvent } from "./run-events.js";
/**
 * Thrown when a supposedly validated lifecycle frame sequence violates a
 * projection invariant. Version 2 projection never synthesizes lifecycle
 * boundaries; repair belongs to the reducer or the legacy read adapter.
 */
export declare class StreamProjectionInvariantError extends Error {
    constructor(message: string);
}
/** Buffered durable projection of validated lifecycle frames. */
export interface LifecycleRunEventAdapter {
    handleFrame(frame: StreamLifecycleFrame): void;
    flush(): void;
    dispose(): void;
}
export declare function createLifecycleRunEventAdapter(input: {
    runId: string;
    attemptId: string;
    attemptIndex: number;
    messageId: string;
    onEvents(events: readonly ConversationRunEvent[]): void;
    maxBufferedContentBytes?: number;
    flushDelayMs?: number;
    setTimer?: (callback: () => void, delayMs: number) => number;
    clearTimer?: (timerId: number) => void;
}): LifecycleRunEventAdapter;
//# sourceMappingURL=lifecycle-run-event-adapter.d.ts.map