/** An initial Set value or a lazy iterable initializer. @public */
export type SetInitializer<T> = Iterable<T> | (() => Iterable<T>);
/** Stable actions returned by {@link useSet}. @public */
export interface UseSetActions<T> {
    /** Adds a value when it is not already present. */
    readonly add: (value: T) => void;
    /** Removes a value when it is present. */
    readonly remove: (value: T) => void;
    /** Adds a value or removes it when it is already present. */
    readonly toggle: (value: T) => void;
    /** Removes every value. */
    readonly clear: () => void;
    /** Restores the first captured values. */
    readonly reset: () => void;
}
/** A readonly Set snapshot and stable actions returned by {@link useSet}. @public */
export type UseSetResult<T> = readonly [ReadonlySet<T>, UseSetActions<T>];
/**
 * Manages an immutable Set snapshot with stable mutation actions.
 *
 * @param initialValue - Values or a lazy values initializer captured once.
 * @returns A readonly Set and stable actions.
 * @public
 */
export declare function useSet<T>(initialValue?: SetInitializer<T>): UseSetResult<T>;