/**
 * @since 2.0.0
 */
import { Applicative2C } from './Applicative.js';
import { Apply2C } from './Apply.js';
import { Bifunctor2 } from './Bifunctor.js';
import { Chain2C } from './Chain.js';
import { ChainRec2C } from './ChainRec.js';
import { Comonad2 } from './Comonad.js';
import { Foldable2 } from './Foldable.js';
import { Functor2 } from './Functor.js';
import { Monad2C } from './Monad.js';
import { Monoid } from './Monoid.js';
import { Semigroup } from './Semigroup.js';
import { Semigroupoid2 } from './Semigroupoid.js';
import { PipeableTraverse2, Traversable2 } from './Traversable.js';
/**
 * @since 2.0.0
 */
export declare const fst: <A, E>(ea: [A, E]) => A;
/**
 * @since 2.0.0
 */
export declare const snd: <A, E>(ea: [A, E]) => E;
/**
 * @since 2.0.0
 */
export declare const swap: <A, E>(ea: [A, E]) => [E, A];
/**
 * @category instances
 * @since 2.0.0
 */
export declare function getApply<S>(S: Semigroup<S>): Apply2C<URI, S>;
/**
 * @category instances
 * @since 2.0.0
 */
export declare function getApplicative<M>(M: Monoid<M>): Applicative2C<URI, M>;
/**
 * @category instances
 * @since 2.0.0
 */
export declare function getChain<S>(S: Semigroup<S>): Chain2C<URI, S>;
/**
 * @category instances
 * @since 2.0.0
 */
export declare function getMonad<M>(M: Monoid<M>): Monad2C<URI, M>;
/**
 * @category instances
 * @since 2.0.0
 */
export declare function getChainRec<M>(M: Monoid<M>): ChainRec2C<URI, M>;
/**
 * Map a pair of functions over the two type arguments of the bifunctor.
 *
 * @category mapping
 * @since 2.0.0
 */
export declare const bimap: <E, G, A, B>(mapSnd: (e: E) => G, mapFst: (a: A) => B) => (fa: [A, E]) => [B, G];
/**
 * Map a function over the first component of a `Tuple`.
 *
 * This is the `map` operation of the `Functor` instance.
 *
 * @category mapping
 * @since 2.0.0
 */
export declare const mapFst: <A, B>(f: (a: A) => B) => <E>(fa: [A, E]) => [B, E];
/**
 * Map a function over the second component of a `Tuple`.
 *
 * This is the `mapLeft` operation of the `Bifunctor` instance.
 *
 * @category mapping
 * @since 2.10.0
 */
export declare const mapSnd: <E, G>(f: (e: E) => G) => <A>(fa: [A, E]) => [A, G];
/**
 * @since 2.0.0
 */
export declare const compose: <A, B>(ab: [B, A]) => <C>(bc: [C, B]) => [C, A];
/**
 * @since 2.0.0
 */
export declare const extend: <E, A, B>(f: (wa: [A, E]) => B) => (wa: [A, E]) => [B, E];
/**
 * @since 2.0.0
 */
export declare const duplicate: <E, A>(wa: [A, E]) => [[A, E], E];
/**
 * @category Extract
 * @since 2.6.2
 */
export declare const extract: <E, A>(wa: [A, E]) => A;
/**
 * @category folding
 * @since 2.0.0
 */
export declare const foldMap: <M>(M: Monoid<M>) => <A>(f: (a: A) => M) => <E>(fa: [A, E]) => M;
/**
 * @category folding
 * @since 2.0.0
 */
export declare const reduce: <A, B>(b: B, f: (b: B, a: A) => B) => <E>(fa: [A, E]) => B;
/**
 * @category folding
 * @since 2.0.0
 */
export declare const reduceRight: <A, B>(b: B, f: (a: A, b: B) => B) => <E>(fa: [A, E]) => B;
/**
 * @category traversing
 * @since 2.6.3
 */
export declare const traverse: PipeableTraverse2<URI>;
/**
 * @category traversing
 * @since 2.6.3
 */
export declare const sequence: Traversable2<URI>['sequence'];
/**
 * @category type lambdas
 * @since 2.0.0
 */
export declare const URI = "Tuple";
/**
 * @category type lambdas
 * @since 2.0.0
 */
export type URI = typeof URI;
declare module './HKT.js' {
    interface URItoKind2<E, A> {
        readonly [URI]: [A, E];
    }
}
/**
 * @category instances
 * @since 2.7.0
 */
export declare const Functor: Functor2<URI>;
/**
 * @category mapping
 * @since 2.10.0
 */
export declare const flap: <A>(a: A) => <E, B>(fab: import("./HKT.js").Kind2<"Tuple", E, (a: A) => B>) => import("./HKT.js").Kind2<"Tuple", E, B>;
/**
 * @category instances
 * @since 2.7.0
 */
export declare const Bifunctor: Bifunctor2<URI>;
/**
 * @category instances
 * @since 2.7.0
 */
export declare const Semigroupoid: Semigroupoid2<URI>;
/**
 * @category instances
 * @since 2.7.0
 */
export declare const Comonad: Comonad2<URI>;
/**
 * @category instances
 * @since 2.7.0
 */
export declare const Foldable: Foldable2<URI>;
/**
 * @category instances
 * @since 2.7.0
 */
export declare const Traversable: Traversable2<URI>;
/**
 * Use [`mapFst`](#mapfst) instead.
 *
 * @category zone of death
 * @since 2.0.0
 * @deprecated
 */
export declare const map: <A, B>(f: (a: A) => B) => <E>(fa: [A, E]) => [B, E];
/**
 * Use [`mapSnd`](#mapsnd) instead.
 *
 * @category zone of death
 * @since 2.0.0
 * @deprecated
 */
export declare const mapLeft: <E, G>(f: (e: E) => G) => <A>(fa: [A, E]) => [A, G];
/**
 * This instance is deprecated, use small, specific instances instead.
 * For example if a function needs a `Functor` instance, pass `T.Functor` instead of `T.tuple`
 * (where `T` is from `import T from 'fp-ts/Tuple'`)
 *
 * @category zone of death
 * @since 2.0.0
 * @deprecated
 */
export declare const tuple: Semigroupoid2<URI> & Bifunctor2<URI> & Comonad2<URI> & Foldable2<URI> & Traversable2<URI>;