import type { DemandSignalSet } from "../../types.js";
/**
 * Provides add signals for the lifecycle pipeline.
 */
export declare function addSignals(target: string[], values: string[]): void;
/**
 * Provides merge signals for the lifecycle pipeline.
 */
export declare function mergeSignals(target: DemandSignalSet, source: DemandSignalSet): void;
/**
 * Provides sort signal set for the lifecycle pipeline.
 */
export declare function sortSignalSet(signalSet: DemandSignalSet): DemandSignalSet;
/**
 * Creates empty signal set for use by the lifecycle pipeline.
 */
export declare function createEmptySignalSet(): DemandSignalSet;
/**
 * Provides has any signals for the lifecycle pipeline.
 */
export declare function hasAnySignals(signalSet: DemandSignalSet): boolean;