import type * as P from "@principia/prelude";
import type { EIO, URI, V } from "./model";
export declare const bimap_: <E, A, B, C>(pab: EIO<E, A>, f: (e: E) => B, g: (a: A) => C) => EIO<B, C>;
export declare const bimap: <E, A, B, C>(f: (e: E) => B, g: (a: A) => C) => (pab: EIO<E, A>) => EIO<B, C>;
export declare const first_: <E, A, B>(pab: EIO<E, A>, f: (e: E) => B) => EIO<B, A>;
export declare const first: <E, B>(f: (e: E) => B) => <A>(pab: EIO<E, A>) => EIO<B, A>;
export declare const swap: <E, A>(pab: EIO<E, A>) => EIO<A, E>;
/**
 * @category Bifunctor
 * @since 1.0.0
 */
export declare const Bifunctor: P.Bifunctor<[URI], V>;
//# sourceMappingURL=bifunctor.d.ts.map