type HashFunction<T> = (data: T) => Promise<string> | string;
export type BloomFilterOptions<T> = {
    size?: number;
    hashFunctions?: Array<HashFunction<T>>;
};
export declare class BloomFilter<T = any> {
    #private;
    static DEFAULT_HASH_FUNCTIONS: (<T_1>(data: T_1) => Promise<string>)[];
    constructor({ size, hashFunctions, }?: BloomFilterOptions<T>);
    add(element: T): Promise<void>;
    test(element: T): Promise<boolean>;
}
export {};