export declare function unique<T>(array: Array<T>): Array<T>;
export declare function objectSortedEntries(obj: {
    readonly [key: string]: unknown;
}): Array<[string, unknown]>;
export declare function objectSortedEntriesDeep(object: {
    readonly [key: string]: unknown;
}): Array<[string, unknown]>;
/**
 * Get the difference of A and B sets
 *
 * This is the set of elements which are in A but not in B
 * For example, the difference of the sets {1,2,3} and {3,4} is {1,2}
 *
 * @param {*} a Set A
 * @param {*} b Set B
 * @returns A \ B
 */
export declare function setDifference<T>(a: ReadonlySet<T>, b: ReadonlySet<T>): Set<T>;
/**
 * Get the symmetric difference of A and B sets
 *
 * This is the set of elements which are in either of the sets, but not in their intersection.
 * For example, the symmetric difference of the sets {1,2,3} and {3,4} is {1,2,4}
 *
 * @param {*} a Set A
 * @param {*} b Set B
 * @returns A Δ B
 */
export declare function setSymmetricDifference<T>(a: ReadonlySet<T>, b: ReadonlySet<T>): Set<T>;
export declare function setIntersect<T>(a: Set<T>, b: ReadonlySet<T>): void;
export declare function setIntersectStatic<T>(a: Set<T>, b: Set<T>): Set<T>;
export declare function setUnion<T>(a: Iterable<T>, b: Iterable<T>): Set<T>;
export declare function setEqual<T>(a: ReadonlySet<T>, b: ReadonlySet<T>): boolean;