/**
 * Gets the size of the set.
 * @returns the size of the set
 * ```typescript
 * pipe(
 *   new Set([ 1, 2, 3]),
 *   Sets.size() // -> 3
 * );
 * ```
 */
export declare const size: <T>(noArg?: undefined) => (set: Set<T>) => number;
/**
 * Checks whether the set contains a given element.
 * @returns true if the set contains the element
 * ```typescript
 * pipe(
 *   new Set([ 1, 2, 3]),
 *   Sets.has(2) // -> true
 * );
 * ```
 */
export declare const has: <T>(val: T) => (set: Set<T>) => boolean;
/**
 * Executes a function for each element in the set.
 * @param fn - the function to execute for each element
 * ```typescript
 * pipe(
 *   new Set([ 1, 2, 3 ]),
 *   Sets.forEach(val => console.log(val)) // logs: 1, 2, 3
 * );
 * ```
 */
export declare const forEach: <T>(fn: (val1: T, val2: T, set: Set<T>) => void) => (set: Set<T>) => void;