import { AbstractEngine } from "@babylonjs/core/Engines/abstractEngine";
export interface IPreloadAssetsFilterOptions {
    /**
     * Defines the name of the scene (ie. "menu.scene") to filter the assets to preload. This is used to match the scene name in the scenes-used-files.json file.
     */
    sceneName: string;
    /**
     * Defines wether to disable loading and saving sounds to the database for the preload.
     */
    disableSounds?: boolean;
    /**
     * Defines wether to disable loading and saving textures to the database for the preload.
     */
    disableTextures?: boolean;
    /**
     * Defines wether to disable loading and saving geometries to the database for the preload (aka. babylonbinarymeshdata files).
     */
    disableGeometries?: boolean;
}
export interface IPreloadAssetsToDatabaseOptions {
    engine?: AbstractEngine;
    /**
     * Defines wether to disable loading and saving images to the database.
     * This is particularly useful when the application supports compressed KTX textures. So only KTX textures are stored.
     */
    disableImages?: boolean;
    /**
     * Defines a list of scene names to filter the scenes to preload. If not defined, all scenes will be preloaded.
     * Using this filter can be useful to reduce the amount of assets to preload when only a subset of scenes is needed.
     * @example ["menu.babylon", "map1.babylon"]
     */
    scenesFilter?: (string | IPreloadAssetsFilterOptions)[];
    /**
     * A callback function that is called with the progress of the asset loading process, as a value between 0 and 1.
     * @param progress defines the progress of the asset loading process, as a value between 0 and 1.
     */
    onProgress?: (progress: number) => void;
}
/**
 * Preloads the assets used by the scenes into the database.
 * This can be used to preload the assets before starting the application or to update the database with new assets after a new deployment.
 * This is particularly useful to improve loading times when the application with a slow network connection, as the assets will be loaded from the local database instead of being downloaded from the server each time.
 * @param databaseName defines the name of the database to create (if doesn't exists) and open and save files to it
 * @param rootUrl defines the root url to load the scenes used files list and the scene manifest files from. Typically "/scenes/".
 * @param options defines the options for preloading assets, including a callback function to be called with the progress of the asset loading process
 */
export declare function preloadAssetsToDatabase(databaseName: string, rootUrl: string, options?: IPreloadAssetsToDatabaseOptions): Promise<{
    loadedCount: number;
    processedFilesCount: number;
}>;