export declare const unique: <T>(values: Array<T | null | undefined | false>) => T[];
export declare const withTimeout: <T>(promise: Promise<T>, timeoutMs: number, message: string) => Promise<T>;
export declare const headerValue: (headers: Record<string, string | string[] | undefined>, name: string) => string | null;
export declare const safeResolve: <T>(operation: () => Promise<T>) => Promise<T | null>;
export declare const safeResolveWithTimeout: <T>(operation: () => Promise<T>, timeoutMs: number, message?: string) => Promise<T | null>;
export declare const mapWithConcurrency: <T, R>(items: T[], limit: number, mapper: (item: T, index: number) => Promise<R>) => Promise<R[]>;
export declare const getSiteDomain: (hostname: string) => string;