import { Entrypoint, Asset } from './types';
export default class Manifest {
    private assets;
    private preload;
    private prefetch;
    constructor(assets?: Record<string, string>);
    addPreloadAsset(entrypoint: Entrypoint, asset: Asset): void;
    addPrefetchAsset(entrypoint: Entrypoint, asset: Asset): void;
    toJSON(): string;
}