import { Eval } from "@tsplus/stdlib/io/Eval/definition";
/**
 * Returns a computation that effectfully "peeks" at the success of this one.
 * @tsplus static Eval.Aspects tap
 * @tsplus pipeable Eval tap
 * @tsplus location "@tsplus/stdlib/io/Eval/tap"
 */
export declare function tap<A, X>(f: (a: A) => Eval<X>): (self: Eval<A>) => Eval<A>;
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