import { Either } from '@yoroi/types';
export declare function isLeft<E, T>(either: Either<E, T>): either is {
    tag: 'left';
    error: E;
};
export declare function isRight<E, T>(either: Either<E, T>): either is {
    tag: 'right';
    value: T;
};
//# sourceMappingURL=monads.d.ts.map