import type { TransitionRuntimeEndpointStateParams } from "../runtime-endpoint-client.js";
export declare const DEFAULT_QUEUE_CAPACITY = 256;
export interface QueuedTransition {
    endpoint_id: string;
    params: TransitionRuntimeEndpointStateParams;
    enqueued_at: number;
}
export interface TransitionStateRetryQueue {
    enqueue(endpoint_id: string, params: TransitionRuntimeEndpointStateParams): boolean;
    flush(emit: (entry: QueuedTransition) => Promise<void>): Promise<void>;
    size(): number;
    capacity(): number;
    peek(): readonly QueuedTransition[];
}
export interface TransitionStateRetryQueueOptions {
    capacity?: number;
    onDrop?: (dropped: QueuedTransition) => void;
}
export declare function createTransitionStateRetryQueue(opts?: TransitionStateRetryQueueOptions): TransitionStateRetryQueue;
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