import type { Option } from './option.js';
type And = {
    <B extends Option.Any, A extends Option.Any>(b: B): (a: A) => Option.Union<B, A>;
    <B extends Option.Any, A extends Option.Any>(b: B, a: A): Option.Union<B, A>;
};
/**
 * Combines two `Option`s, returning the second `Option` if both are `Some`, and `None` otherwise.
 *
 * @tags option, transform, transform-option
 */
export declare const and: And;
export {};