export declare function arraySetDelete<T>(array: Array<T>, value: T): boolean;
export declare function arraySetHas<T>(array: Array<T>, value: T): boolean;
export declare function arraySetAdd<T>(array: Array<T>, value: T): boolean;
export declare function arraySetUnion<T>(a: Array<T>, b: Array<T>): Array<T>;
export declare function arraySetDiff<T>(from: Array<T>, diff: Array<T>): Array<T>;