export default interface MaybeProvider<T> {
    /**
     * True if value is some, otherwise false
     */
    readonly isSome: boolean;
    /**
     * True if value is none, otherwise false
     */
    readonly isNone: boolean;
    /**
     * Transform the mapped element and return new MaybeProvider with the result
     * @param {(wrapped: T) => R} f
     * @returns {MaybeProvider<R>}
     */
    map<R>(f: (wrapped: T) => R): MaybeProvider<R>;
    flatMap<R>(f: (unwrapped: T) => MaybeProvider<R>): MaybeProvider<R>;
    /**
     * Return value
     * @returns {T}
     */
    get(): T;
    /**
     * Return value or provided value
     * @param {T} value
     * @returns {T}
     */
    getOrElse(value: T): T;
    /**
     * Default value wrapped in MaybeProvider<T>
     * @param {T} value
     * @returns {MaybeProvider<T>}
     */
    defaulting(value: T): MaybeProvider<T>;
}