export interface Preload {
    rel: 'stylesheet' | 'modulepreload' | 'module' | 'preload';
    href: string;
    as?: string;
    type?: string;
    nonce?: string;
    comment?: string;
    isEntry?: boolean;
    asyncScript?: boolean;
}
export declare function createHtmlTag({ rel, href, as, type, comment, nonce, asyncScript, }: Preload): string | null;
/**
 * Create a combined Link header separated by ,
 */
export declare function createLinkHeader(modules: Preload[]): string;
/**
 * Creates a single Link header
 */
export declare function createSingleLinkHeader({ rel, href, as, type }: Preload): string | null;
export declare function sortPreloads(modules: Preload[]): Preload[];