import { Option } from './option';
/**
 * Apply a function to the contained value (if any)
 * @param option Option to match against
 * @param fn Function to call when `option` contains a value
 * @returns An `Option` of `fn`'s return value
 */
export declare const map: <Value = never, Return = Value>(option: Option<Value>, fn: (value: Value) => Return) => Option<Return>;
export default map;