import { SealedPartial } from './sealed';
export declare class Either<S, F, V = any> extends SealedPartial<V, S | F, {
    success: (state: S) => V;
    failure: (state: F) => V;
}> {
    static success<S>(value?: S): Either<S, any>;
    static failure<F>(value?: F): Either<any, F>;
}