import type { Task } from "../../Task/model";
import type { Managed } from "../model";
/**
 * Ensures that `f` is executed when this `Managed` is finalized, before
 * the existing finalizer.
 *
 * For use cases that need access to the Managed's result, see `onExitFirst`.
 */
export declare function ensuringFirst<R1>(
   f: Task<R1, never, unknown>
): <R, E, A>(self: Managed<R, E, A>) => Managed<R & R1, E, A>;
/**
 * Ensures that `f` is executed when this `Managed` is finalized, before
 * the existing finalizer.
 *
 * For use cases that need access to the Managed's result, see `onExitFirst_`.
 */
export declare function ensuringFirst_<R, E, A, R1>(
   self: Managed<R, E, A>,
   f: Task<R1, never, unknown>
): Managed<R & R1, E, A>;
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