import type { AssetMap, LoadedAsset, LoadedAssets, LoaderEventType } from './types.js';
type LoaderEventCallback<T> = (payload: T) => void;
interface LoaderEvents {
    load: {
        assets: AssetMap;
    };
    loading: {
        key: string;
        src: string;
    };
    loaded: {
        key: string;
        asset: LoadedAsset;
    };
    error: {
        key: string;
        src: string;
        error: Error;
    };
    complete: {
        assets: LoadedAssets;
    };
}
export declare class Loader {
    private listeners;
    readonly assets: LoadedAssets;
    on<K extends LoaderEventType>(event: K, callback: LoaderEventCallback<LoaderEvents[K]>): this;
    off<K extends LoaderEventType>(event: K, callback: LoaderEventCallback<LoaderEvents[K]>): this;
    private emit;
    load(assets: AssetMap): Promise<LoadedAssets>;
    private loadAsset;
}
export {};