import { BundleType, LazyLoaderServiceEvents, LazyLoaderServiceInterface } from '@internetarchive/lazy-loader-service';
import { Unsubscribe } from 'nanoevents';
export declare class MockLazyLoaderService implements LazyLoaderServiceInterface {
    private onloadFn;
    loadScriptSrc?: string;
    constructor(onloadFn?: () => unknown);
    on<E extends keyof LazyLoaderServiceEvents>(event: E, callback: LazyLoaderServiceEvents[E]): Unsubscribe;
    loadBundle(bundle: {
        module?: string;
        nomodule?: string;
    }): Promise<void>;
    loadScript(options: {
        src: string;
        bundleType?: BundleType;
        attributes?: Record<string, string>;
    }): Promise<void>;
}