/**
 * Bloom Filter is used to check whether a word is in the dictionary with less memory usage than normal hash map.
 */
export declare class BloomFilter {
    private size;
    private bitArray;
    private numHashFunctions;
    constructor();
    private hash;
    add(word: string): void;
    contains(word: string): boolean;
    static loadFromZipFile(zipFilename: string): BloomFilter;
}
declare class DictionaryMatcher {
    bloomFilter: BloomFilter;
    constructor();
    match(text: string): "exact" | "contains" | "none";
}
export declare function trimNonAlphabetChars(token: string): string;
export declare const dictMatcher: DictionaryMatcher;
export {};
//# sourceMappingURL=dict.d.ts.map