/**
 * Execution journal for tracking workflow and step events
 */
import type { BoundedEventBus, OrchestrationEvent } from './event-bus.js';
/**
 * Journal entry for an event
 */
export interface JournalEntry {
    timestamp: number;
    type: string;
    data: OrchestrationEvent;
}
/**
 * ExecutionJournal subscribes to events and maintains a journal
 */
export declare class ExecutionJournal {
    private readonly entries;
    private readonly maxEntries;
    private readonly eventBus;
    private readonly boundRecordEvent;
    constructor(eventBus: BoundedEventBus, maxEntries?: number);
    /**
     * Record an event to the journal with backpressure safety
     */
    private recordEvent;
    /**
     * Get all journal entries
     */
    getEntries(): ReadonlyArray<JournalEntry>;
    /**
     * Get entries filtered by event type
     */
    getEntriesByType(eventType: string): ReadonlyArray<JournalEntry>;
    /**
     * Get entries for a specific execution
     */
    getEntriesByExecution(executionId: string): ReadonlyArray<JournalEntry>;
    /**
     * Get entries for a specific workflow
     */
    getEntriesByWorkflow(workflowId: string): ReadonlyArray<JournalEntry>;
    /**
     * Get entries for a specific step
     */
    getEntriesByStep(stepId: string): ReadonlyArray<JournalEntry>;
    /**
     * Clear all journal entries
     */
    clear(): void;
    /**
     * Get the current size of the journal
     */
    size(): number;
    /**
     * Unsubscribe from all events
     */
    dispose(): void;
}
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