export declare function toggleSet(s: Set, a: A): void;
/**
* @deprecated use Array.from(set) instead
* */
export declare function setToArray(s: Set): A[];
export declare function setMinus(a: Set, b: Set): Set;
export declare function setAdd(a: Set, b: Set): Set;
export declare function setMinusInplace(to: Set, from: Set): void;
export declare function setAddInplace(to: Set, from: Set): void;