import type { IntegrationPlugin } from '../../plugins/integration-plugin.js';
import type { Processor } from '../../plugins/processor.js';
import type { EcoPagesAppConfig } from '../../types/internal-types.js';
/**
 * Optional contributor surface for build-time cache invalidation.
 *
 * @remarks
 * Processors and integrations may override {@link didChange} to report that
 * their build inputs changed independently of route source files.
 */
export interface BuildInputChangeContributor {
    /**
     * Returns `true` when this contributor's build inputs changed since the last
     * persisted incremental build metadata was written.
     */
    didChange?(): boolean;
}
/** Returns whether a processor or integration signals changed build inputs. */
export declare function didBuildInputContributorChange(contributor: BuildInputChangeContributor): boolean;
/** Hashes the app's eco.config.ts file when present. */
export declare function hashAppConfigFile(appConfig: EcoPagesAppConfig): string;
/** Fingerprints processor/integration build-input state for cache invalidation. */
export declare function createBuildInputsFingerprint(appConfig: EcoPagesAppConfig): string;
/** Returns true when any processor or integration reports changed build inputs. */
export declare function haveBuildInputsChanged(appConfig: EcoPagesAppConfig): boolean;
/** Collects every processor and integration that can invalidate incremental builds. */
export declare function collectBuildInputContributors(appConfig: EcoPagesAppConfig): BuildInputChangeContributor[];
export type { Processor, IntegrationPlugin };