declare abstract class AssetManager<T> {
    private _map;
    private _data;
    protected _resolve?(response: Response): Promise<T>;
    private _load;
    load(options?: ImageOptions): Promise<T[]>;
    private _get;
    get(...keys: string[]): T[];
    check(...keys: string[]): Promise<void>;
}
export declare type ImageOptions = Record<string, string>;
export declare class ImageManager extends AssetManager<ImageBitmap> {
    protected _resolve(response: Response): Promise<ImageBitmap>;
}
export interface AssetOptions {
    images?: ImageOptions;
}
export declare const images: ImageManager;
export declare function loadImages(options?: ImageOptions): Promise<ImageBitmap[]>;
declare const _default: {
    images: ImageManager;
    load(options?: AssetOptions): Promise<ImageBitmap[][]>;
};
export default _default;