import { Either } from "@tsplus/stdlib/data/Either/definition";
/**
 * Apply `Either<E, A> => B` in case self is right returning `Either<E, B>`.
 * @tsplus static Either.Aspects extend
 * @tsplus pipeable Either extend
 * @tsplus location "@tsplus/stdlib/data/Either/extend"
 */
export declare function extend<E, A, B>(f: (either: Either<E, A>) => B): (self: Either<E, A>) => Either<E, B>;
//# sourceMappingURL=extend.d.ts.map