import type { EcoPagesAppConfig } from '../../types/internal-types.js';
/**
 * App-owned coarse invalidation state for server-executed modules.
 */
export interface ServerInvalidationState {
    getServerInvalidationVersion(): number;
    invalidateServerModules(changedFiles?: string[]): void;
    reset(): void;
}
/**
 * Minimal app-local invalidation state backed by a single generation counter.
 */
export declare class CounterServerInvalidationState implements ServerInvalidationState {
    private serverInvalidationVersion;
    getServerInvalidationVersion(): number;
    invalidateServerModules(_changedFiles?: string[]): void;
    reset(): void;
}
/**
 * Returns the app-owned server invalidation state.
 */
export declare function getAppServerInvalidationState(appConfig: EcoPagesAppConfig): ServerInvalidationState;
/**
 * Installs the invalidation state used by one app instance.
 */
export declare function setAppServerInvalidationState(appConfig: EcoPagesAppConfig, serverInvalidationState: ServerInvalidationState): void;