/**
 * @since 2.0.0
 */
import { ApplicativeComposition2C1, ApplicativeComposition11, ApplicativeComposition21, ApplicativeCompositionHKT1 } from './Applicative.js';
import { Apply, Apply1, Apply2, Apply2C, Apply3, Apply3C, Apply4 } from './Apply.js';
import { Chain, Chain1, Chain2, Chain2C, Chain3, Chain3C, Chain4 } from './Chain.js';
import { Either } from './Either.js';
import { LazyArg } from './function.js';
import { Functor, Functor1, Functor2, Functor2C, Functor3, Functor3C, Functor4 } from './Functor.js';
import { HKT, Kind, Kind2, Kind3, Kind4, URIS, URIS2, URIS3, URIS4 } from './HKT.js';
import { Monad, Monad1, Monad2, Monad2C, Monad3, Monad3C, Monad4 } from './Monad.js';
import * as O from './Option.js';
import { Pointed, Pointed1, Pointed2, Pointed2C, Pointed3, Pointed3C, Pointed4 } from './Pointed.js';
import { Predicate } from './Predicate.js';
import { Refinement } from './Refinement.js';
type Option<A> = O.Option<A>;
/**
 * @since 2.10.0
 */
export declare function some<F extends URIS4>(F: Pointed4<F>): <A, S, R, E>(a: A) => Kind4<F, S, R, E, Option<A>>;
export declare function some<F extends URIS3>(F: Pointed3<F>): <A, R, E>(a: A) => Kind3<F, R, E, Option<A>>;
export declare function some<F extends URIS3, E>(F: Pointed3C<F, E>): <A, R>(a: A) => Kind3<F, R, E, Option<A>>;
export declare function some<F extends URIS2>(F: Pointed2<F>): <A, E>(a: A) => Kind2<F, E, Option<A>>;
export declare function some<F extends URIS2, E>(F: Pointed2C<F, E>): <A>(a: A) => Kind2<F, E, Option<A>>;
export declare function some<F extends URIS>(F: Pointed1<F>): <A>(a: A) => Kind<F, Option<A>>;
export declare function some<F>(F: Pointed<F>): <A>(a: A) => HKT<F, Option<A>>;
/**
 * @since 2.10.0
 */
export declare function zero<F extends URIS4>(F: Pointed4<F>): <S, R, E, A>() => Kind4<F, S, R, E, Option<A>>;
export declare function zero<F extends URIS3>(F: Pointed3<F>): <R, E, A>() => Kind3<F, R, E, Option<A>>;
export declare function zero<F extends URIS3, E>(F: Pointed3C<F, E>): <R, A>() => Kind3<F, R, E, Option<A>>;
export declare function zero<F extends URIS2>(F: Pointed2<F>): <E, A>() => Kind2<F, E, Option<A>>;
export declare function zero<F extends URIS2, E>(F: Pointed2C<F, E>): <A>() => Kind2<F, E, Option<A>>;
export declare function zero<F extends URIS>(F: Pointed1<F>): <A>() => Kind<F, Option<A>>;
export declare function zero<F>(F: Pointed<F>): <A>() => HKT<F, Option<A>>;
/**
 * @since 2.10.0
 */
export declare function fromF<F extends URIS4>(F: Functor4<F>): <S, R, E, A>(ma: Kind4<F, S, R, E, A>) => Kind4<F, S, R, E, Option<A>>;
export declare function fromF<F extends URIS3>(F: Functor3<F>): <R, E, A>(ma: Kind3<F, R, E, A>) => Kind3<F, R, E, Option<A>>;
export declare function fromF<F extends URIS3, E>(F: Functor3C<F, E>): <R, A>(ma: Kind3<F, R, E, A>) => Kind3<F, R, E, Option<A>>;
export declare function fromF<F extends URIS2>(F: Functor2<F>): <E, A>(ma: Kind2<F, E, A>) => Kind2<F, E, Option<A>>;
export declare function fromF<F extends URIS2, E>(F: Functor2C<F, E>): <A>(ma: Kind2<F, E, A>) => Kind2<F, E, Option<A>>;
export declare function fromF<F extends URIS>(F: Functor1<F>): <A>(ma: Kind<F, A>) => Kind<F, Option<A>>;
export declare function fromF<F>(F: Functor<F>): <A>(ma: HKT<F, A>) => HKT<F, Option<A>>;
/**
 * @since 2.10.0
 */
export declare function fromNullable<F extends URIS4>(F: Pointed4<F>): <A, S, R, E>(a: A) => Kind4<F, S, R, E, Option<NonNullable<A>>>;
export declare function fromNullable<F extends URIS3>(F: Pointed3<F>): <A, R, E>(a: A) => Kind3<F, R, E, Option<NonNullable<A>>>;
export declare function fromNullable<F extends URIS3, E>(F: Pointed3C<F, E>): <A, R>(a: A) => Kind3<F, R, E, Option<NonNullable<A>>>;
export declare function fromNullable<F extends URIS2>(F: Pointed2<F>): <A, E>(a: A) => Kind2<F, E, Option<NonNullable<A>>>;
export declare function fromNullable<F extends URIS2, E>(F: Pointed2C<F, E>): <A>(a: A) => Kind2<F, E, Option<NonNullable<A>>>;
export declare function fromNullable<F extends URIS>(F: Pointed1<F>): <A>(a: A) => Kind<F, Option<NonNullable<A>>>;
export declare function fromNullable<F>(F: Pointed<F>): <A>(a: A) => HKT<F, Option<NonNullable<A>>>;
/**
 * @since 2.10.0
 */
export declare function fromNullableK<F extends URIS4>(F: Pointed4<F>): <A extends ReadonlyArray<unknown>, B>(f: (...a: A) => B | null | undefined) => <S, R, E>(...a: A) => Kind4<F, S, R, E, Option<NonNullable<B>>>;
export declare function fromNullableK<F extends URIS3>(F: Pointed3<F>): <A extends ReadonlyArray<unknown>, B>(f: (...a: A) => B | null | undefined) => <R, E>(...a: A) => Kind3<F, R, E, Option<NonNullable<B>>>;
export declare function fromNullableK<F extends URIS3, E>(F: Pointed3C<F, E>): <A extends ReadonlyArray<unknown>, B>(f: (...a: A) => B | null | undefined) => <R>(...a: A) => Kind3<F, R, E, Option<NonNullable<B>>>;
export declare function fromNullableK<F extends URIS2>(F: Pointed2<F>): <A extends ReadonlyArray<unknown>, B>(f: (...a: A) => B | null | undefined) => <E>(...a: A) => Kind2<F, E, Option<NonNullable<B>>>;
export declare function fromNullableK<F extends URIS2, E>(F: Pointed2C<F, E>): <A extends ReadonlyArray<unknown>, B>(f: (...a: A) => B | null | undefined) => (...a: A) => Kind2<F, E, Option<NonNullable<B>>>;
export declare function fromNullableK<F extends URIS>(F: Pointed1<F>): <A extends ReadonlyArray<unknown>, B>(f: (...a: A) => B | null | undefined) => (...a: A) => Kind<F, Option<NonNullable<B>>>;
export declare function fromNullableK<F>(F: Pointed<F>): <A extends ReadonlyArray<unknown>, B>(f: (...a: A) => B | null | undefined) => (...a: A) => HKT<F, Option<NonNullable<B>>>;
/**
 * @since 2.10.0
 */
export declare function chainNullableK<M extends URIS4>(M: Monad4<M>): <A, B>(f: (a: A) => B | null | undefined) => <S, R, E>(ma: Kind4<M, S, R, E, Option<A>>) => Kind4<M, S, R, E, Option<NonNullable<B>>>;
export declare function chainNullableK<M extends URIS3>(M: Monad3<M>): <A, B>(f: (a: A) => B | null | undefined) => <R, E>(ma: Kind3<M, R, E, Option<A>>) => Kind3<M, R, E, Option<NonNullable<B>>>;
export declare function chainNullableK<M extends URIS3, E>(M: Monad3C<M, E>): <A, B>(f: (a: A) => B | null | undefined) => <R>(ma: Kind3<M, R, E, Option<A>>) => Kind3<M, R, E, Option<NonNullable<B>>>;
export declare function chainNullableK<M extends URIS2>(M: Monad2<M>): <A, B>(f: (a: A) => B | null | undefined) => <E>(ma: Kind2<M, E, Option<A>>) => Kind2<M, E, Option<NonNullable<B>>>;
export declare function chainNullableK<M extends URIS2, E>(M: Monad2C<M, E>): <A, B>(f: (a: A) => B | null | undefined) => (ma: Kind2<M, E, Option<A>>) => Kind2<M, E, Option<NonNullable<B>>>;
export declare function chainNullableK<M extends URIS>(M: Monad1<M>): <A, B>(f: (a: A) => B | null | undefined) => (ma: Kind<M, Option<A>>) => Kind<M, Option<NonNullable<B>>>;
export declare function chainNullableK<M>(M: Monad<M>): <A, B>(f: (a: A) => B | null | undefined) => (ma: HKT<M, Option<A>>) => HKT<M, Option<NonNullable<B>>>;
/**
 * @since 2.10.0
 */
export declare function fromOptionK<F extends URIS4>(F: Pointed4<F>): <A extends ReadonlyArray<unknown>, B>(f: (...a: A) => Option<B>) => <S, R, E>(...a: A) => Kind4<F, S, R, E, Option<B>>;
export declare function fromOptionK<F extends URIS3>(F: Pointed3<F>): <A extends ReadonlyArray<unknown>, B>(f: (...a: A) => Option<B>) => <R, E>(...a: A) => Kind3<F, R, E, Option<B>>;
export declare function fromOptionK<F extends URIS3, E>(F: Pointed3C<F, E>): <A extends ReadonlyArray<unknown>, B>(f: (...a: A) => Option<B>) => <R>(...a: A) => Kind3<F, R, E, Option<B>>;
export declare function fromOptionK<F extends URIS2>(F: Pointed2<F>): <A extends ReadonlyArray<unknown>, B>(f: (...a: A) => Option<B>) => <E>(...a: A) => Kind2<F, E, Option<B>>;
export declare function fromOptionK<F extends URIS2, E>(F: Pointed2C<F, E>): <A extends ReadonlyArray<unknown>, B>(f: (...a: A) => Option<B>) => (...a: A) => Kind2<F, E, Option<B>>;
export declare function fromOptionK<F extends URIS>(F: Pointed1<F>): <A extends ReadonlyArray<unknown>, B>(f: (...a: A) => Option<B>) => (...a: A) => Kind<F, Option<B>>;
export declare function fromOptionK<F>(F: Pointed<F>): <A extends ReadonlyArray<unknown>, B>(f: (...a: A) => Option<B>) => (...a: A) => HKT<F, Option<B>>;
/**
 * @since 2.10.0
 */
export declare function chainOptionK<M extends URIS4>(M: Monad4<M>): <A, B>(f: (a: A) => Option<B>) => <S, R, E>(ma: Kind4<M, S, R, E, Option<A>>) => Kind4<M, S, R, E, Option<B>>;
export declare function chainOptionK<M extends URIS3>(M: Monad3<M>): <A, B>(f: (a: A) => Option<B>) => <R, E>(ma: Kind3<M, R, E, Option<A>>) => Kind3<M, R, E, Option<B>>;
export declare function chainOptionK<M extends URIS3, E>(M: Monad3C<M, E>): <A, B>(f: (a: A) => Option<B>) => <R>(ma: Kind3<M, R, E, Option<A>>) => Kind3<M, R, E, Option<B>>;
export declare function chainOptionK<M extends URIS2>(M: Monad2<M>): <A, B>(f: (a: A) => Option<B>) => <E>(ma: Kind2<M, E, Option<A>>) => Kind2<M, E, Option<B>>;
export declare function chainOptionK<M extends URIS2, E>(M: Monad2C<M, E>): <A, B>(f: (a: A) => Option<B>) => (ma: Kind2<M, E, Option<A>>) => Kind2<M, E, Option<B>>;
export declare function chainOptionK<M extends URIS>(M: Monad1<M>): <A, B>(f: (a: A) => Option<B>) => (ma: Kind<M, Option<A>>) => Kind<M, Option<B>>;
export declare function chainOptionK<M>(M: Monad<M>): <A, B>(f: (a: A) => Option<B>) => (ma: HKT<M, Option<A>>) => HKT<M, Option<B>>;
/**
 * @category lifting
 * @since 2.10.0
 */
export declare function fromPredicate<F extends URIS4>(F: Pointed4<F>): {
    <A, B extends A>(refinement: Refinement<A, B>): <S, R, E>(a: A) => Kind4<F, S, R, E, Option<B>>;
    <A>(predicate: Predicate<A>): <S, R, E, B extends A>(b: B) => Kind4<F, S, R, E, Option<B>>;
    <A>(predicate: Predicate<A>): <S, R, E>(a: A) => Kind4<F, S, R, E, Option<A>>;
};
export declare function fromPredicate<F extends URIS3>(F: Pointed3<F>): {
    <A, B extends A>(refinement: Refinement<A, B>): <R, E>(a: A) => Kind3<F, R, E, Option<B>>;
    <A>(predicate: Predicate<A>): <R, E, B extends A>(b: B) => Kind3<F, R, E, Option<B>>;
    <A>(predicate: Predicate<A>): <R, E>(a: A) => Kind3<F, R, E, Option<A>>;
};
export declare function fromPredicate<F extends URIS3, E>(F: Pointed3C<F, E>): {
    <A, B extends A>(refinement: Refinement<A, B>): <R>(a: A) => Kind3<F, R, E, Option<B>>;
    <A>(predicate: Predicate<A>): <R, B extends A>(b: B) => Kind3<F, R, E, Option<B>>;
    <A>(predicate: Predicate<A>): <R>(a: A) => Kind3<F, R, E, Option<A>>;
};
export declare function fromPredicate<F extends URIS2>(F: Pointed2<F>): {
    <A, B extends A>(refinement: Refinement<A, B>): <E>(a: A) => Kind2<F, E, Option<B>>;
    <A>(predicate: Predicate<A>): <E, B extends A>(b: B) => Kind2<F, E, Option<B>>;
    <A>(predicate: Predicate<A>): <E>(a: A) => Kind2<F, E, Option<A>>;
};
export declare function fromPredicate<F extends URIS2, E>(F: Pointed2C<F, E>): {
    <A, B extends A>(refinement: Refinement<A, B>): (a: A) => Kind2<F, E, Option<B>>;
    <A>(predicate: Predicate<A>): <B extends A>(b: B) => Kind2<F, E, Option<B>>;
    <A>(predicate: Predicate<A>): (a: A) => Kind2<F, E, Option<A>>;
};
export declare function fromPredicate<F extends URIS>(F: Pointed1<F>): {
    <A, B extends A>(refinement: Refinement<A, B>): (a: A) => Kind<F, Option<B>>;
    <A>(predicate: Predicate<A>): <B extends A>(b: B) => Kind<F, Option<B>>;
    <A>(predicate: Predicate<A>): (a: A) => Kind<F, Option<A>>;
};
export declare function fromPredicate<F>(F: Pointed<F>): {
    <A, B extends A>(refinement: Refinement<A, B>): (a: A) => HKT<F, Option<B>>;
    <A>(predicate: Predicate<A>): <B extends A>(b: B) => HKT<F, Option<B>>;
    <A>(predicate: Predicate<A>): (a: A) => HKT<F, Option<A>>;
};
/**
 * @since 2.10.0
 */
export declare function fromEither<F extends URIS4>(F: Pointed4<F>): <A, S, R, E>(e: Either<unknown, A>) => Kind4<F, S, R, E, Option<A>>;
export declare function fromEither<F extends URIS3>(F: Pointed3<F>): <A, R, E>(e: Either<unknown, A>) => Kind3<F, R, E, Option<A>>;
export declare function fromEither<F extends URIS3, E>(F: Pointed3C<F, E>): <A, R>(e: Either<unknown, A>) => Kind3<F, R, E, Option<A>>;
export declare function fromEither<F extends URIS2>(F: Pointed2<F>): <A, E>(e: Either<unknown, A>) => Kind2<F, E, Option<A>>;
export declare function fromEither<F extends URIS2, E>(F: Pointed2C<F, E>): <A>(e: Either<unknown, A>) => Kind2<F, E, Option<A>>;
export declare function fromEither<F extends URIS2, E>(F: Pointed2C<F, E>): <A>(e: Either<unknown, A>) => Kind2<F, E, Option<A>>;
export declare function fromEither<F extends URIS>(F: Pointed1<F>): <A>(e: Either<unknown, A>) => Kind<F, Option<A>>;
export declare function fromEither<F>(F: Pointed<F>): <A>(e: Either<unknown, A>) => HKT<F, Option<A>>;
/**
 * @category pattern matching
 * @since 2.10.0
 */
export declare function match<F extends URIS4>(F: Functor4<F>): <B, A>(onNone: () => B, onSome: (a: A) => B) => <S, R, E>(ma: Kind4<F, S, R, E, Option<A>>) => Kind4<F, S, R, E, B>;
export declare function match<F extends URIS3>(F: Functor3<F>): <B, A>(onNone: () => B, onSome: (a: A) => B) => <R, E>(ma: Kind3<F, R, E, Option<A>>) => Kind3<F, R, E, B>;
export declare function match<F extends URIS3, E>(F: Functor3C<F, E>): <B, A>(onNone: () => B, onSome: (a: A) => B) => <R>(ma: Kind3<F, R, E, Option<A>>) => Kind3<F, R, E, B>;
export declare function match<F extends URIS2>(F: Functor2<F>): <B, A>(onNone: () => B, onSome: (a: A) => B) => <E>(ma: Kind2<F, E, Option<A>>) => Kind2<F, E, B>;
export declare function match<F extends URIS2, E>(F: Functor2C<F, E>): <B, A>(onNone: () => B, onSome: (a: A) => B) => (ma: Kind2<F, E, Option<A>>) => Kind2<F, E, B>;
export declare function match<F extends URIS>(F: Functor1<F>): <B, A>(onNone: () => B, onSome: (a: A) => B) => (ma: Kind<F, Option<A>>) => Kind<F, B>;
export declare function match<F>(F: Functor<F>): <B, A>(onNone: () => B, onSome: (a: A) => B) => (ma: HKT<F, Option<A>>) => HKT<F, B>;
/**
 * @since 2.10.0
 */
export declare function matchE<M extends URIS4>(M: Chain4<M>): <S, R, E, B, A>(onNone: () => Kind4<M, S, R, E, B>, onSome: (a: A) => Kind4<M, S, R, E, B>) => (ma: Kind4<M, S, R, E, Option<A>>) => Kind4<M, S, R, E, B>;
export declare function matchE<M extends URIS3>(M: Chain3<M>): <R, E, B, A>(onNone: () => Kind3<M, R, E, B>, onSome: (a: A) => Kind3<M, R, E, B>) => (ma: Kind3<M, R, E, Option<A>>) => Kind3<M, R, E, B>;
export declare function matchE<M extends URIS3, E>(M: Chain3C<M, E>): <R, B, A>(onNone: () => Kind3<M, R, E, B>, onSome: (a: A) => Kind3<M, R, E, B>) => (ma: Kind3<M, R, E, Option<A>>) => Kind3<M, R, E, B>;
export declare function matchE<M extends URIS2>(M: Chain2<M>): <E, B, A>(onNone: () => Kind2<M, E, B>, onSome: (a: A) => Kind2<M, E, B>) => (ma: Kind2<M, E, Option<A>>) => Kind2<M, E, B>;
export declare function matchE<M extends URIS2, E>(M: Chain2C<M, E>): <B, A>(onNone: () => Kind2<M, E, B>, onSome: (a: A) => Kind2<M, E, B>) => (ma: Kind2<M, E, Option<A>>) => Kind2<M, E, B>;
export declare function matchE<M extends URIS>(M: Chain1<M>): <B, A>(onNone: () => Kind<M, B>, onSome: (a: A) => Kind<M, B>) => (ma: Kind<M, Option<A>>) => Kind<M, B>;
export declare function matchE<M>(M: Chain<M>): <B, A>(onNone: () => HKT<M, B>, onSome: (a: A) => HKT<M, B>) => (ma: HKT<M, Option<A>>) => HKT<M, B>;
/**
 * @since 2.10.0
 */
export declare function getOrElse<M extends URIS4>(M: Monad4<M>): <S, R, E, A>(onNone: LazyArg<Kind4<M, S, R, E, A>>) => (fa: Kind4<M, S, R, E, Option<A>>) => Kind4<M, S, R, E, A>;
export declare function getOrElse<M extends URIS3>(M: Monad3<M>): <R, E, A>(onNone: LazyArg<Kind3<M, R, E, A>>) => (fa: Kind3<M, R, E, Option<A>>) => Kind3<M, R, E, A>;
export declare function getOrElse<M extends URIS3, E>(M: Monad3C<M, E>): <R, A>(onNone: LazyArg<Kind3<M, R, E, A>>) => (fa: Kind3<M, R, E, Option<A>>) => Kind3<M, R, E, A>;
export declare function getOrElse<M extends URIS2>(M: Monad2<M>): <E, A>(onNone: LazyArg<Kind2<M, E, A>>) => (fa: Kind2<M, E, Option<A>>) => Kind2<M, E, A>;
export declare function getOrElse<M extends URIS2, E>(M: Monad2C<M, E>): <A>(onNone: LazyArg<Kind2<M, E, A>>) => (fa: Kind2<M, E, Option<A>>) => Kind2<M, E, A>;
export declare function getOrElse<M extends URIS>(M: Monad1<M>): <A>(onNone: LazyArg<Kind<M, A>>) => (fa: Kind<M, Option<A>>) => Kind<M, A>;
export declare function getOrElse<M>(M: Monad<M>): <A>(onNone: LazyArg<HKT<M, A>>) => (fa: HKT<M, Option<A>>) => HKT<M, A>;
/**
 * @since 2.10.0
 */
export declare function map<F extends URIS4>(F: Functor4<F>): <A, B>(f: (a: A) => B) => <S, R, E>(fa: Kind4<F, S, R, E, Option<A>>) => Kind4<F, S, R, E, Option<B>>;
export declare function map<F extends URIS3>(F: Functor3<F>): <A, B>(f: (a: A) => B) => <R, E>(fa: Kind3<F, R, E, Option<A>>) => Kind3<F, R, E, Option<B>>;
export declare function map<F extends URIS3, E>(F: Functor3C<F, E>): <A, B>(f: (a: A) => B) => <R>(fa: Kind3<F, R, E, Option<A>>) => Kind3<F, R, E, Option<B>>;
export declare function map<F extends URIS2>(F: Functor2<F>): <A, B>(f: (a: A) => B) => <E>(fa: Kind2<F, E, Option<A>>) => Kind2<F, E, Option<B>>;
export declare function map<F extends URIS2, E>(F: Functor2C<F, E>): <A, B>(f: (a: A) => B) => (fa: Kind2<F, E, Option<A>>) => Kind2<F, E, Option<B>>;
export declare function map<F extends URIS>(F: Functor1<F>): <A, B>(f: (a: A) => B) => (fa: Kind<F, Option<A>>) => Kind<F, Option<B>>;
export declare function map<F>(F: Functor<F>): <A, B>(f: (a: A) => B) => (fa: HKT<F, Option<A>>) => HKT<F, Option<B>>;
/**
 * @since 2.10.0
 */
export declare function ap<F extends URIS4>(F: Apply4<F>): <S, R, E, A>(fa: Kind4<F, S, R, E, Option<A>>) => <B>(fab: Kind4<F, S, R, E, Option<(a: A) => B>>) => Kind4<F, S, R, E, Option<B>>;
export declare function ap<F extends URIS3>(F: Apply3<F>): <R, E, A>(fa: Kind3<F, R, E, Option<A>>) => <B>(fab: Kind3<F, R, E, Option<(a: A) => B>>) => Kind3<F, R, E, Option<B>>;
export declare function ap<F extends URIS3, E>(F: Apply3C<F, E>): <R, A>(fa: Kind3<F, R, E, Option<A>>) => <B>(fab: Kind3<F, R, E, Option<(a: A) => B>>) => Kind3<F, R, E, Option<B>>;
export declare function ap<F extends URIS2>(F: Apply2<F>): <E, A>(fa: Kind2<F, E, Option<A>>) => <B>(fab: Kind2<F, E, Option<(a: A) => B>>) => Kind2<F, E, Option<B>>;
export declare function ap<F extends URIS2, E>(F: Apply2C<F, E>): <A>(fa: Kind2<F, E, Option<A>>) => <B>(fab: Kind2<F, E, Option<(a: A) => B>>) => Kind2<F, E, Option<B>>;
export declare function ap<F extends URIS>(F: Apply1<F>): <A>(fa: Kind<F, Option<A>>) => <B>(fab: Kind<F, Option<(a: A) => B>>) => Kind<F, Option<B>>;
export declare function ap<F>(F: Apply<F>): <A>(fa: HKT<F, Option<A>>) => <B>(fab: HKT<F, Option<(a: A) => B>>) => HKT<F, Option<B>>;
/**
 * @since 2.10.0
 */
export declare function chain<M extends URIS4>(M: Monad4<M>): <A, S, R, E, B>(f: (a: A) => Kind4<M, S, R, E, Option<B>>) => (ma: Kind4<M, S, R, E, Option<A>>) => Kind4<M, S, R, E, Option<B>>;
export declare function chain<M extends URIS3>(M: Monad3<M>): <A, R, E, B>(f: (a: A) => Kind3<M, R, E, Option<B>>) => (ma: Kind3<M, R, E, Option<A>>) => Kind3<M, R, E, Option<B>>;
export declare function chain<M extends URIS3, E>(M: Monad3C<M, E>): <A, R, B>(f: (a: A) => Kind3<M, R, E, Option<B>>) => (ma: Kind3<M, R, E, Option<A>>) => Kind3<M, R, E, Option<B>>;
export declare function chain<M extends URIS2>(M: Monad2<M>): <A, E, B>(f: (a: A) => Kind2<M, E, Option<B>>) => (ma: Kind2<M, E, Option<A>>) => Kind2<M, E, Option<B>>;
export declare function chain<M extends URIS2, E>(M: Monad2C<M, E>): <A, B>(f: (a: A) => Kind2<M, E, Option<B>>) => (ma: Kind2<M, E, Option<A>>) => Kind2<M, E, Option<B>>;
export declare function chain<M extends URIS>(M: Monad1<M>): <A, B>(f: (a: A) => Kind<M, Option<B>>) => (ma: Kind<M, Option<A>>) => Kind<M, Option<B>>;
export declare function chain<M>(M: Monad<M>): <A, B>(f: (a: A) => HKT<M, Option<B>>) => (ma: HKT<M, Option<A>>) => HKT<M, Option<B>>;
/**
 * @since 2.10.0
 */
export declare function alt<M extends URIS4>(M: Monad4<M>): <S, R, E, A>(second: LazyArg<Kind4<M, S, R, E, Option<A>>>) => (first: Kind4<M, S, R, E, Option<A>>) => Kind4<M, S, R, E, Option<A>>;
export declare function alt<M extends URIS3>(M: Monad3<M>): <R, E, A>(second: LazyArg<Kind3<M, R, E, Option<A>>>) => (first: Kind3<M, R, E, Option<A>>) => Kind3<M, R, E, Option<A>>;
export declare function alt<M extends URIS3, E>(M: Monad3C<M, E>): <R, A>(second: LazyArg<Kind3<M, R, E, Option<A>>>) => (first: Kind3<M, R, E, Option<A>>) => Kind3<M, R, E, Option<A>>;
export declare function alt<M extends URIS2>(M: Monad2<M>): <E, A>(second: LazyArg<Kind2<M, E, Option<A>>>) => (first: Kind2<M, E, Option<A>>) => Kind2<M, E, Option<A>>;
export declare function alt<M extends URIS2, E>(M: Monad2C<M, E>): <A>(second: LazyArg<Kind2<M, E, Option<A>>>) => (first: Kind2<M, E, Option<A>>) => Kind2<M, E, Option<A>>;
export declare function alt<M extends URIS>(M: Monad1<M>): <A>(second: LazyArg<Kind<M, Option<A>>>) => (first: Kind<M, Option<A>>) => Kind<M, Option<A>>;
export declare function alt<M>(M: Monad<M>): <A>(second: LazyArg<HKT<M, Option<A>>>) => (first: HKT<M, Option<A>>) => HKT<M, Option<A>>;
/**
 * @category zone of death
 * @since 2.0.0
 * @deprecated
 */
export interface OptionT<M, A> extends HKT<M, Option<A>> {
}
/**
 * @category zone of death
 * @since 2.0.0
 * @deprecated
 */
export interface OptionM<M> extends ApplicativeCompositionHKT1<M, O.URI> {
    readonly chain: <A, B>(ma: OptionT<M, A>, f: (a: A) => OptionT<M, B>) => OptionT<M, B>;
    readonly alt: <A>(fa: OptionT<M, A>, that: LazyArg<OptionT<M, A>>) => OptionT<M, A>;
    readonly fold: <A, R>(ma: OptionT<M, A>, onNone: LazyArg<HKT<M, R>>, onSome: (a: A) => HKT<M, R>) => HKT<M, R>;
    readonly getOrElse: <A>(ma: OptionT<M, A>, onNone: LazyArg<HKT<M, A>>) => HKT<M, A>;
    readonly fromM: <A>(ma: HKT<M, A>) => OptionT<M, A>;
    readonly none: <A = never>() => OptionT<M, A>;
}
/**
 * @category zone of death
 * @since 2.0.0
 * @deprecated
 */
export type OptionT1<M extends URIS, A> = Kind<M, Option<A>>;
/**
 * @category zone of death
 * @since 2.0.0
 * @deprecated
 */
export interface OptionM1<M extends URIS> extends ApplicativeComposition11<M, O.URI> {
    readonly chain: <A, B>(ma: OptionT1<M, A>, f: (a: A) => OptionT1<M, B>) => OptionT1<M, B>;
    readonly alt: <A>(fa: OptionT1<M, A>, that: LazyArg<OptionT1<M, A>>) => OptionT1<M, A>;
    readonly fold: <A, R>(ma: OptionT1<M, A>, onNone: LazyArg<Kind<M, R>>, onSome: (a: A) => Kind<M, R>) => Kind<M, R>;
    readonly getOrElse: <A>(ma: OptionT1<M, A>, onNone: LazyArg<Kind<M, A>>) => Kind<M, A>;
    readonly fromM: <A>(ma: Kind<M, A>) => OptionT1<M, A>;
    readonly none: <A = never>() => OptionT1<M, A>;
}
/**
 * @category zone of death
 * @since 2.0.0
 * @deprecated
 */
export type OptionT2<M extends URIS2, E, A> = Kind2<M, E, Option<A>>;
/**
 * @category zone of death
 * @since 2.0.0
 * @deprecated
 */
export interface OptionM2<M extends URIS2> extends ApplicativeComposition21<M, O.URI> {
    readonly chain: <E, A, B>(ma: OptionT2<M, E, A>, f: (a: A) => OptionT2<M, E, B>) => OptionT2<M, E, B>;
    readonly alt: <E, A>(fa: OptionT2<M, E, A>, that: LazyArg<OptionT2<M, E, A>>) => OptionT2<M, E, A>;
    readonly fold: <E, A, R>(ma: OptionT2<M, E, A>, onNone: LazyArg<Kind2<M, E, R>>, onSome: (a: A) => Kind2<M, E, R>) => Kind2<M, E, R>;
    readonly getOrElse: <E, A>(ma: OptionT2<M, E, A>, onNone: LazyArg<Kind2<M, E, A>>) => Kind2<M, E, A>;
    readonly fromM: <E, A>(ma: Kind2<M, E, A>) => OptionT2<M, E, A>;
    readonly none: <E = never, A = never>() => OptionT2<M, E, A>;
}
/**
 * @category zone of death
 * @since 2.2.0
 * @deprecated
 */
export interface OptionM2C<M extends URIS2, E> extends ApplicativeComposition2C1<M, O.URI, E> {
    readonly chain: <A, B>(ma: OptionT2<M, E, A>, f: (a: A) => OptionT2<M, E, B>) => OptionT2<M, E, B>;
    readonly alt: <A>(fa: OptionT2<M, E, A>, that: LazyArg<OptionT2<M, E, A>>) => OptionT2<M, E, A>;
    readonly fold: <A, R>(ma: OptionT2<M, E, A>, onNone: LazyArg<Kind2<M, E, R>>, onSome: (a: A) => Kind2<M, E, R>) => Kind2<M, E, R>;
    readonly getOrElse: <A>(ma: OptionT2<M, E, A>, onNone: LazyArg<Kind2<M, E, A>>) => Kind2<M, E, A>;
    readonly fromM: <A>(ma: Kind2<M, E, A>) => OptionT2<M, E, A>;
    readonly none: <A = never>() => OptionT2<M, E, A>;
}
/**
 * @category zone of death
 * @since 2.0.0
 * @deprecated
 */
export declare function getOptionM<M extends URIS2>(M: Monad2<M>): OptionM2<M>;
/** @deprecated */
export declare function getOptionM<M extends URIS2, E>(M: Monad2C<M, E>): OptionM2C<M, E>;
/** @deprecated */
export declare function getOptionM<M extends URIS>(M: Monad1<M>): OptionM1<M>;
/** @deprecated */
export declare function getOptionM<M>(M: Monad<M>): OptionM<M>;
export {};