import type { CheerioAPI } from 'cheerio';
export interface SubresourceIntegrityOptions {
    readonly allowExternalFetch?: boolean;
    readonly fetcher?: typeof fetch;
}
export interface SubresourceIntegrityResult {
    readonly failures: string[];
    readonly skippedExternalResources: string[];
}
export declare function addSubresourceIntegrity(document: CheerioAPI, options?: SubresourceIntegrityOptions): Promise<SubresourceIntegrityResult>;