import type { WebSearchRequest, WebSearchResult } from '@deepseek-ai/dsh-web';
import type { BraveConfig, SearchBackend } from './types.ts';
/** Brave Web Search API backend. */
export declare class BraveBackend implements SearchBackend {
    private readonly resolveApiKey;
    private readonly apiKeyReference;
    private readonly config;
    private readonly requestTimeoutMs;
    readonly id = "lemoncat7-search";
    readonly kind = "brave";
    constructor(resolveApiKey: () => Promise<string | undefined>, apiKeyReference: string, config: BraveConfig, requestTimeoutMs?: number);
    available(): boolean;
    search(request: WebSearchRequest, signal?: AbortSignal): Promise<WebSearchResult>;
}