import type { Documentation, DocumentationSource } from '../types/documentation.js';
import { HttpClient } from '../utils/http-client.js';
export declare class NpmRegistryClient implements DocumentationSource {
    private readonly registryUrl;
    private httpClient;
    constructor(httpClient?: HttpClient);
    getPackageMetadata(packageName: string): Promise<{
        repository?: {
            url?: string;
            type?: string;
        };
        homepage?: string;
    } | null>;
    fetch(packageName: string, version?: string): Promise<Documentation>;
    private fetchFromRepository;
    private fetchFromHomepage;
    private generateFallbackMessage;
}
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