import { Either } from "@tsplus/stdlib/data/Either/definition";
/**
 * Similar to `flatMap`, but ignores the constructed output.
 * @tsplus static Either.Aspects tap
 * @tsplus pipeable Either tap
 * @tsplus location "@tsplus/stdlib/data/Either/tap"
 */
export declare function tap<A, E2, B>(f: (a: A) => Either<E2, B>): <E>(self: import("./definition").Either<E, A>) => import("./definition").Either<E2 | E, A>;
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