export declare function difference<T>(a: Set<T>, b: Set<T>): Set<T>;
export declare function symmetricDifference<T>(a: Set<T>, b: Set<T>): Set<T>;
export declare function setEquality<T>(a: Set<T>, b: Set<T>): boolean;
export declare function intersection<T>(a: Set<T>, b: Set<T>): Set<T>;
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