import type { ObservableEvents } from 'modern-idoc';
import type { Loader } from './loaders';
import { Observable } from 'modern-idoc';
import { FontLoader, GifLoader, JsonLoader, LottieLoader, TextLoader, TextureLoader, VideoLoader } from './loaders';
export type AssetHandler = (blob: Blob, options?: any) => any | Promise<any>;
export interface Assets {
    font: FontLoader;
    gif: GifLoader;
    gifWorkerUrl?: string;
    json: JsonLoader;
    lottie: LottieLoader;
    text: TextLoader;
    texture: TextureLoader;
    video: VideoLoader;
}
export interface AssetsEvents extends ObservableEvents {
    loaded: [id: string, value: any];
}
export declare class Assets extends Observable<AssetsEvents> {
    defaultHandler: AssetHandler;
    protected _handlers: Map<string, AssetHandler>;
    protected _handleing: Map<string, Promise<any>>;
    protected _handled: Map<string, any>;
    protected _gc: FinalizationRegistry<string> | undefined;
    constructor();
    use(loader: Loader): this;
    register(mimeType: string, handler: AssetHandler): this;
    fetch(url: string): Promise<Response>;
    protected _fixSVG(dataURI: string): string;
    fetchImageBitmap(url: string | Blob, options?: ImageBitmapOptions): Promise<ImageBitmap>;
    get<T>(id: string): T | undefined;
    set(id: string, value: any): void;
    awaitBy<T = any>(handler: () => Promise<T>): Promise<T>;
    loadBy<T = Blob>(id: string, handler?: () => Promise<T>): Promise<T>;
    load<T>(url: string, options?: any): Promise<T>;
    waitUntilLoad(): Promise<void>;
    gc(): void;
}
export declare const assets: Assets;