import type { AttributeFilter, ListFilter, WorkflowState } from '../types.ts';
import type { EngineInternals } from './internals.ts';
/** Stream decoded workflow states that match a list filter. */
export declare function streamMatchingWorkflowStates(internals: EngineInternals, filter?: ListFilter): AsyncGenerator<WorkflowState>;
/** Resolve indexed workflow IDs implied by lineage, schedule, tag, and search-attribute filters. */
export declare function resolveConstrainedIds(internals: EngineInternals, filter: ListFilter | undefined, normalizedTagFilters: readonly string[] | undefined): Promise<Set<string> | null>;
/** Query a single search-attribute index filter and return matching workflow IDs. */
export declare function queryAttributeIndex(internals: EngineInternals, filter: AttributeFilter): Promise<Set<string>>;
/** Resolve the durable reverse index from one concrete parent run to its direct children. */
export declare function queryChildWorkflowIndex(internals: EngineInternals, parentWorkflowId: string, parentWorkflowExecutionToken: string | undefined): Promise<Set<string>>;
/** Resolve the durable reverse index from a schedule id to launched workflow ids. */
export declare function queryScheduleRunIndex(internals: EngineInternals, scheduleId: string): Promise<Set<string>>;
export declare function isTopLevelWorkflowStateKey(key: string): boolean;