import { InjectionToken, Provider } from '@angular/core';
import { RxStrategyNames } from '@rx-angular/cdk/render-strategies';
export declare const VIRTUAL_VIEW_CONFIG_TOKEN: InjectionToken<RxVirtualViewConfig>;
export interface RxVirtualViewConfig {
    keepLastKnownSize: boolean;
    useContentVisibility: boolean;
    useContainment: boolean;
    placeholderStrategy: RxStrategyNames<string>;
    contentStrategy: RxStrategyNames<string>;
    cacheEnabled: boolean;
    startWithPlaceholderAsap: boolean;
    cache: {
        /**
         * The maximum number of contents that can be stored in the cache.
         * Defaults to 20.
         */
        contentCacheSize: number;
        /**
         * The maximum number of placeholders that can be stored in the cache.
         * Defaults to 20.
         */
        placeholderCacheSize: number;
    };
}
export declare const VIRTUAL_VIEW_CONFIG_DEFAULT: RxVirtualViewConfig;
/**
 * Provides a configuration object for the `VirtualView` service.
 *
 * Can be used to customize the behavior of the `VirtualView` service.
 *
 * Default configuration:
 * - contentCacheSize: 20
 * - placeholderCacheSize: 20
 *
 * Example usage:
 *
 * ```ts
 * import { provideVirtualViewConfig } from '@rx-angular/template/virtual-view';
 *
 * const appConfig: ApplicationConfig = {
 *   providers: [
 *     provideVirtualViewConfig({
 *       contentCacheSize: 50,
 *       placeholderCacheSize: 50,
 *     }),
 *   ],
 * };
 * ```
 *
 * @developerPreview
 *
 * @param config - The configuration object.
 * @returns An object that can be provided to the `VirtualView` service.
 */
export declare function provideVirtualViewConfig(config: Partial<RxVirtualViewConfig & {
    cache?: Partial<RxVirtualViewConfig['cache']>;
}>): Provider;