import type { AssetConnector, AssetExpiry, AssetProviderId, FetchAssetsOptions } from './types.js';
export declare abstract class AssetBaseConnector implements AssetConnector {
    abstract id: AssetProviderId;
    abstract name: string;
    abstract is_real: boolean;
    protected safeFetch(url: string, init: RequestInit, byok_key: string): Promise<Response>;
    protected fingerprint(key: string): string;
    abstract fetchAssets(byok_key: string, opts?: FetchAssetsOptions): Promise<AssetExpiry[]>;
    abstract ping(byok_key: string): Promise<{
        ok: boolean;
        error?: string;
        key_fingerprint?: string;
    }>;
}
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