export declare const jpHira: RegExp;
export declare const jpKana: RegExp;
export declare const jpKanji: RegExp;
export declare const jpChar: RegExp;
export declare function concat(args: (string | RegExp)[], flags?: string): RegExp;
export declare function combine(args: (string | RegExp)[], flags?: string): RegExp;
export declare function addBoundary(arg: string | RegExp): RegExp;
export declare function parseRegExpString(str: string): RegExp | null;
export declare function spreadAlphaNum(str: string): RegExp;
export declare function addDefaultFlags(regexp: RegExp): RegExp;
export declare function escapeSpecialChars(str: string): string;
export declare function collectAll(regexp: RegExp, src: string): RegExpExecArray[];
export declare function equals(a: RegExp, b: RegExp): boolean;