import { ConfigBody, DVCLogger, ConfigSource } from '@devcycle/types';
export declare class CDNConfigSource extends ConfigSource {
    private cdnURI;
    private logger;
    private requestTimeoutMS;
    constructor(cdnURI: string, logger: DVCLogger, requestTimeoutMS: number);
    getConfig<T extends boolean = false>(sdkKey: string, kind: 'server' | 'bootstrap', obfuscated: boolean, lastModifiedThreshold?: string): Promise<{
        config: T extends true ? ConfigBody : ConfigBody | null;
        metaData: Record<string, unknown>;
        lastModified: string | null;
    }>;
    getConfigURL(sdkKey: string, kind: 'server' | 'bootstrap'): string;
}