FromEither

Constructors

• fromOption

Lifting

• fromPredicate

Model

• FromEither
• FromEither1
• FromEither2
• FromEither2C
• FromEither3
• FromEither3C
• FromEither4

Utilities

• chainEitherK
• chainFirstEitherK
• chainOptionK
• filterOrElse
• fromEitherK
• fromOptionK

Constructors

fromOption

Signature

export declare function fromOption<F extends URIS4>(
  F: FromEither4<F>,
): <E>(onNone: LazyArg<E>) => <A, S, R>(fa: Option<A>) => Kind4<F, S, R, E, A>



export declare function fromOption<F extends URIS3>(
  F: FromEither3<F>,
): <E>(onNone: LazyArg<E>) => <A, R>(fa: Option<A>) => Kind3<F, R, E, A>



export declare function fromOption<F extends URIS3, E>(
  F: FromEither3C<F, E>,
): (onNone: LazyArg<E>) => <A, R>(fa: Option<A>) => Kind3<F, R, E, A>



export declare function fromOption<F extends URIS2>(
  F: FromEither2<F>,
): <E>(onNone: LazyArg<E>) => <A>(fa: Option<A>) => Kind2<F, E, A>



export declare function fromOption<F extends URIS2, E>(
  F: FromEither2C<F, E>,
): (onNone: LazyArg<E>) => <A>(fa: Option<A>) => Kind2<F, E, A>



export declare function fromOption<F>(F: FromEither<F>): <E>(onNone: LazyArg<E>) => <A>(ma: Option<A>) => HKT2<F, E, A>

Details

• Added in 0.1.0

License

• MIT – Copyright (c) 2017-present Giulio Canti

Lifting

fromPredicate

Signature

export declare function fromPredicate<F extends URIS4>(
  F: FromEither4<F>,
): {
  <A, B extends A, E>(refinement: Refinement<A, B>, onFalse: (a: A) => E): <S, R>(a: A) => Kind4<F, S, R, E, B>
  <A, E>(predicate: Predicate<A>, onFalse: (a: A) => E): <S, R, B extends A>(b: B) => Kind4<F, S, R, E, B>
  <A, E>(predicate: Predicate<A>, onFalse: (a: A) => E): <S, R>(a: A) => Kind4<F, S, R, E, A>
}



export declare function fromPredicate<F extends URIS3>(
  F: FromEither3<F>,
): {
  <A, B extends A, E>(refinement: Refinement<A, B>, onFalse: (a: A) => E): <R>(a: A) => Kind3<F, R, E, B>
  <A, E>(predicate: Predicate<A>, onFalse: (a: A) => E): <R, B extends A>(b: B) => Kind3<F, R, E, B>
  <A, E>(predicate: Predicate<A>, onFalse: (a: A) => E): <R>(a: A) => Kind3<F, R, E, A>
}



export declare function fromPredicate<F extends URIS3, E>(
  F: FromEither3C<F, E>,
): {
  <A, B extends A>(refinement: Refinement<A, B>, onFalse: (a: A) => E): <R>(a: A) => Kind3<F, R, E, B>
  <A>(predicate: Predicate<A>, onFalse: (a: A) => E): <R, B extends A>(b: B) => Kind3<F, R, E, B>
  <A>(predicate: Predicate<A>, onFalse: (a: A) => E): <R>(a: A) => Kind3<F, R, E, A>
}



export declare function fromPredicate<F extends URIS2>(
  F: FromEither2<F>,
): {
  <A, B extends A, E>(refinement: Refinement<A, B>, onFalse: (a: A) => E): (a: A) => Kind2<F, E, B>
  <A, E>(predicate: Predicate<A>, onFalse: (a: A) => E): <B extends A>(b: B) => Kind2<F, E, B>
  <A, E>(predicate: Predicate<A>, onFalse: (a: A) => E): (a: A) => Kind2<F, E, A>
}



export declare function fromPredicate<F extends URIS2, E>(
  F: FromEither2C<F, E>,
): {
  <A, B extends A>(refinement: Refinement<A, B>, onFalse: (a: A) => E): (a: A) => Kind2<F, E, B>
  <A>(predicate: Predicate<A>, onFalse: (a: A) => E): <B extends A>(b: B) => Kind2<F, E, B>
  <A>(predicate: Predicate<A>, onFalse: (a: A) => E): (a: A) => Kind2<F, E, A>
}



export declare function fromPredicate<F>(F: FromEither<F>): {
  <A, B extends A, E>(refinement: Refinement<A, B>, onFalse: (a: A) => E): (a: A) => HKT2<F, E, B>
  <A, E>(predicate: Predicate<A>, onFalse: (a: A) => E): <B extends A>(b: B) => HKT2<F, E, B>
  <A, E>(predicate: Predicate<A>, onFalse: (a: A) => E): (a: A) => HKT2<F, E, A>
}

Details

• Added in 0.1.0

License

• MIT – Copyright (c) 2017-present Giulio Canti

Model

FromEither

Signature

export interface FromEither<F> {
  readonly fromEither: <E, A>(e: Either<E, A>) => HKT2<F, E, A>
  readonly URI: F
}

Details

• Added in 0.1.0

License

• MIT – Copyright (c) 2017-present Giulio Canti

---

FromEither1

Signature

export interface FromEither1<F extends URIS> {
  readonly fromEither: <A>(fa: Either<unknown, A>) => Kind<F, A>
  readonly URI: F
}

Details

• Added in 0.1.0

License

• MIT – Copyright (c) 2017-present Giulio Canti

---

FromEither2

Signature

export interface FromEither2<F extends URIS2> {
  readonly fromEither: <E, A>(fa: Either<E, A>) => Kind2<F, E, A>
  readonly URI: F
}

Details

• Added in 0.1.0

License

• MIT – Copyright (c) 2017-present Giulio Canti

---

FromEither2C

Signature

export interface FromEither2C<F extends URIS2, E> {
  readonly _E: E
  readonly fromEither: <A>(fa: Either<E, A>) => Kind2<F, E, A>
  readonly URI: F
}

Details

• Added in 0.1.0

License

• MIT – Copyright (c) 2017-present Giulio Canti

---

FromEither3

Signature

export interface FromEither3<F extends URIS3> {
  readonly fromEither: <E, A, R>(fa: Either<E, A>) => Kind3<F, R, E, A>
  readonly URI: F
}

Details

• Added in 0.1.0

License

• MIT – Copyright (c) 2017-present Giulio Canti

---

FromEither3C

Signature

export interface FromEither3C<F extends URIS3, E> {
  readonly _E: E
  readonly fromEither: <A, R>(fa: Either<E, A>) => Kind3<F, R, E, A>
  readonly URI: F
}

Details

• Added in 0.1.0

License

• MIT – Copyright (c) 2017-present Giulio Canti

---

FromEither4

Signature

export interface FromEither4<F extends URIS4> {
  readonly fromEither: <E, A, S, R>(fa: Either<E, A>) => Kind4<F, S, R, E, A>
  readonly URI: F
}

Details

• Added in 0.1.0

License

• MIT – Copyright (c) 2017-present Giulio Canti

Utilities

chainEitherK

Signature

export declare function chainEitherK<M extends URIS4>(
  F: FromEither4<M>,
  M: Chain4<M>,
): <A, E, B>(f: (a: A) => Either<E, B>) => <S, R>(ma: Kind4<M, S, R, E, A>) => Kind4<M, S, R, E, B>



export declare function chainEitherK<M extends URIS3>(
  F: FromEither3<M>,
  M: Chain3<M>,
): <A, E, B>(f: (a: A) => Either<E, B>) => <R>(ma: Kind3<M, R, E, A>) => Kind3<M, R, E, B>



export declare function chainEitherK<M extends URIS3, E>(
  F: FromEither3C<M, E>,
  M: Chain3C<M, E>,
): <A, B>(f: (a: A) => Either<E, B>) => <R>(ma: Kind3<M, R, E, A>) => Kind3<M, R, E, B>



export declare function chainEitherK<M extends URIS2>(
  F: FromEither2<M>,
  M: Chain2<M>,
): <A, E, B>(f: (a: A) => Either<E, B>) => (ma: Kind2<M, E, A>) => Kind2<M, E, B>



export declare function chainEitherK<M extends URIS2, E>(
  F: FromEither2C<M, E>,
  M: Chain2C<M, E>,
): <A, B>(f: (a: A) => Either<E, B>) => (ma: Kind2<M, E, A>) => Kind2<M, E, B>



export declare function chainEitherK<M extends URIS>(
  F: FromEither1<M>,
  M: Chain1<M>,
): <E, A, B>(f: (a: A) => Either<E, B>) => (ma: Kind<M, A>) => Kind<M, B>



export declare function chainEitherK<M>(
  F: FromEither<M>,
  M: Chain<M>,
): <A, E, B>(f: (a: A) => Either<E, B>) => (ma: HKT2<M, E, A>) => HKT2<M, E, B>

Details

• Added in 0.1.0

License

• MIT – Copyright (c) 2017-present Giulio Canti

---

chainFirstEitherK

Signature

export declare function chainFirstEitherK<M extends URIS4>(
  F: FromEither4<M>,
  M: Chain4<M>,
): <A, E, B>(f: (a: A) => Either<E, B>) => <S, R>(ma: Kind4<M, S, R, E, A>) => Kind4<M, S, R, E, A>



export declare function chainFirstEitherK<M extends URIS3>(
  F: FromEither3<M>,
  M: Chain3<M>,
): <A, E, B>(f: (a: A) => Either<E, B>) => <R>(ma: Kind3<M, R, E, A>) => Kind3<M, R, E, A>



export declare function chainFirstEitherK<M extends URIS3, E>(
  F: FromEither3C<M, E>,
  M: Chain3C<M, E>,
): <A, B>(f: (a: A) => Either<E, B>) => <R>(ma: Kind3<M, R, E, A>) => Kind3<M, R, E, A>



export declare function chainFirstEitherK<M extends URIS2>(
  F: FromEither2<M>,
  M: Chain2<M>,
): <A, E, B>(f: (a: A) => Either<E, B>) => (ma: Kind2<M, E, A>) => Kind2<M, E, A>



export declare function chainFirstEitherK<M extends URIS2, E>(
  F: FromEither2C<M, E>,
  M: Chain2C<M, E>,
): <A, B>(f: (a: A) => Either<E, B>) => (ma: Kind2<M, E, A>) => Kind2<M, E, A>



export declare function chainFirstEitherK<M extends URIS>(
  F: FromEither1<M>,
  M: Chain1<M>,
): <E, A, B>(f: (a: A) => Either<E, B>) => (ma: Kind<M, A>) => Kind<M, A>



export declare function chainFirstEitherK<M>(
  F: FromEither<M>,
  M: Chain<M>,
): <A, E, B>(f: (a: A) => Either<E, B>) => (ma: HKT2<M, E, A>) => HKT2<M, E, A>

Details

• Added in 0.1.0

License

• MIT – Copyright (c) 2017-present Giulio Canti

---

chainOptionK

Signature

export declare function chainOptionK<F extends URIS4>(
  F: FromEither4<F>,
  M: Chain4<F>,
): <E>(onNone: LazyArg<E>) => <A, B>(f: (a: A) => Option<B>) => <S, R>(ma: Kind4<F, S, R, E, A>) => Kind4<F, S, R, E, B>



export declare function chainOptionK<F extends URIS3>(
  F: FromEither3<F>,
  M: Chain3<F>,
): <E>(onNone: LazyArg<E>) => <A, B>(f: (a: A) => Option<B>) => <R>(ma: Kind3<F, R, E, A>) => Kind3<F, R, E, B>



export declare function chainOptionK<F extends URIS3, E>(
  F: FromEither3C<F, E>,
  M: Chain3C<F, E>,
): (onNone: LazyArg<E>) => <A, B>(f: (a: A) => Option<B>) => <R>(ma: Kind3<F, R, E, A>) => Kind3<F, R, E, B>



export declare function chainOptionK<F extends URIS2>(
  F: FromEither2<F>,
  M: Chain2<F>,
): <E>(onNone: LazyArg<E>) => <A, B>(f: (a: A) => Option<B>) => (ma: Kind2<F, E, A>) => Kind2<F, E, B>



export declare function chainOptionK<F extends URIS2, E>(
  F: FromEither2C<F, E>,
  M: Chain2C<F, E>,
): (onNone: LazyArg<E>) => <A, B>(f: (a: A) => Option<B>) => (ma: Kind2<F, E, A>) => Kind2<F, E, B>



export declare function chainOptionK<F>(
  F: FromEither<F>,
  M: Chain<F>,
): <E>(onNone: LazyArg<E>) => <A, B>(f: (a: A) => Option<B>) => (ma: HKT2<F, E, A>) => HKT2<F, E, B>

Details

• Added in 0.1.0

License

• MIT – Copyright (c) 2017-present Giulio Canti

---

filterOrElse

Signature

export declare function filterOrElse<M extends URIS4>(
  F: FromEither4<M>,
  M: Chain4<M>,
): {
  <A, B extends A, E>(
    refinement: Refinement<A, B>,
    onFalse: (a: A) => E,
  ): <S, R>(ma: Kind4<M, S, R, E, A>) => Kind4<M, S, R, E, B>
  <A, E>(
    predicate: Predicate<A>,
    onFalse: (a: A) => E,
  ): <S, R, B extends A>(mb: Kind4<M, S, R, E, B>) => Kind4<M, S, R, E, B>
  <A, E>(predicate: Predicate<A>, onFalse: (a: A) => E): <S, R>(ma: Kind4<M, S, R, E, A>) => Kind4<M, S, R, E, A>
}



export declare function filterOrElse<M extends URIS3>(
  F: FromEither3<M>,
  M: Chain3<M>,
): {
  <A, B extends A, E>(
    refinement: Refinement<A, B>,
    onFalse: (a: A) => E,
  ): <R>(ma: Kind3<M, R, E, A>) => Kind3<M, R, E, B>
  <A, E>(predicate: Predicate<A>, onFalse: (a: A) => E): <R, B extends A>(mb: Kind3<M, R, E, B>) => Kind3<M, R, E, B>
  <A, E>(predicate: Predicate<A>, onFalse: (a: A) => E): <R>(ma: Kind3<M, R, E, A>) => Kind3<M, R, E, A>
}



export declare function filterOrElse<M extends URIS3, E>(
  F: FromEither3C<M, E>,
  M: Chain3C<M, E>,
): {
  <A, B extends A>(refinement: Refinement<A, B>, onFalse: (a: A) => E): <R>(ma: Kind3<M, R, E, A>) => Kind3<M, R, E, B>
  <A>(predicate: Predicate<A>, onFalse: (a: A) => E): <R, B extends A>(mb: Kind3<M, R, E, B>) => Kind3<M, R, E, B>
  <A>(predicate: Predicate<A>, onFalse: (a: A) => E): <R>(ma: Kind3<M, R, E, A>) => Kind3<M, R, E, A>
}



export declare function filterOrElse<M extends URIS2>(
  F: FromEither2<M>,
  M: Chain2<M>,
): {
  <A, B extends A, E>(refinement: Refinement<A, B>, onFalse: (a: A) => E): (self: Kind2<M, E, A>) => Kind2<M, E, B>
  <A, E>(predicate: Predicate<A>, onFalse: (a: A) => E): <B extends A>(self: Kind2<M, E, B>) => Kind2<M, E, B>
  <A, E>(predicate: Predicate<A>, onFalse: (a: A) => E): (self: Kind2<M, E, A>) => Kind2<M, E, A>
}



export declare function filterOrElse<M extends URIS2, E>(
  F: FromEither2C<M, E>,
  M: Chain2C<M, E>,
): {
  <A, B extends A>(refinement: Refinement<A, B>, onFalse: (a: A) => E): (ma: Kind2<M, E, A>) => Kind2<M, E, B>
  <A>(predicate: Predicate<A>, onFalse: (a: A) => E): <B extends A>(mb: Kind2<M, E, B>) => Kind2<M, E, B>
  <A>(predicate: Predicate<A>, onFalse: (a: A) => E): (ma: Kind2<M, E, A>) => Kind2<M, E, A>
}



export declare function filterOrElse<M extends URIS2>(
  F: FromEither<M>,
  M: Chain<M>,
): {
  <A, B extends A, E>(refinement: Refinement<A, B>, onFalse: (a: A) => E): (ma: HKT2<M, E, A>) => HKT2<M, E, B>
  <A, E>(predicate: Predicate<A>, onFalse: (a: A) => E): <B extends A>(mb: HKT2<M, E, B>) => HKT2<M, E, B>
  <A, E>(predicate: Predicate<A>, onFalse: (a: A) => E): (ma: HKT2<M, E, A>) => HKT2<M, E, A>
}

Details

• Added in 0.1.0

License

• MIT – Copyright (c) 2017-present Giulio Canti

---

fromEitherK

Signature

export declare function fromEitherK<F extends URIS4>(
  F: FromEither4<F>,
): <A extends ReadonlyArray<unknown>, E, B>(f: (...a: A) => Either<E, B>) => <S, R>(...a: A) => Kind4<F, S, R, E, B>



export declare function fromEitherK<F extends URIS3>(
  F: FromEither3<F>,
): <A extends ReadonlyArray<unknown>, E, B>(f: (...a: A) => Either<E, B>) => <R>(...a: A) => Kind3<F, R, E, B>



export declare function fromEitherK<F extends URIS3, E>(
  F: FromEither3C<F, E>,
): <A extends ReadonlyArray<unknown>, B>(f: (...a: A) => Either<E, B>) => <R>(...a: A) => Kind3<F, R, E, B>



export declare function fromEitherK<F extends URIS2>(
  F: FromEither2<F>,
): <A extends ReadonlyArray<unknown>, E, B>(f: (...a: A) => Either<E, B>) => (...a: A) => Kind2<F, E, B>



export declare function fromEitherK<F extends URIS2, E>(
  F: FromEither2C<F, E>,
): <A extends ReadonlyArray<unknown>, B>(f: (...a: A) => Either<E, B>) => (...a: A) => Kind2<F, E, B>



export declare function fromEitherK<F extends URIS>(
  F: FromEither1<F>,
): <E, A extends ReadonlyArray<unknown>, B>(f: (...a: A) => Either<E, B>) => (...a: A) => Kind<F, B>



export declare function fromEitherK<F>(
  F: FromEither<F>,
): <A extends ReadonlyArray<unknown>, E, B>(f: (...a: A) => Either<E, B>) => (...a: A) => HKT2<F, E, B>

Details

• Added in 0.1.0

License

• MIT – Copyright (c) 2017-present Giulio Canti

---

fromOptionK

Signature

export declare function fromOptionK<F extends URIS4>(
  F: FromEither4<F>,
): <E>(
  onNone: LazyArg<E>,
) => <A extends ReadonlyArray<unknown>, B>(f: (...a: A) => Option<B>) => <S, R>(...a: A) => Kind4<F, S, R, E, B>



export declare function fromOptionK<F extends URIS3>(
  F: FromEither3<F>,
): <E>(
  onNone: LazyArg<E>,
) => <A extends ReadonlyArray<unknown>, B>(f: (...a: A) => Option<B>) => <R>(...a: A) => Kind3<F, R, E, B>



export declare function fromOptionK<F extends URIS3, E>(
  F: FromEither3C<F, E>,
): (
  onNone: LazyArg<E>,
) => <A extends ReadonlyArray<unknown>, B>(f: (...a: A) => Option<B>) => <R>(...a: A) => Kind3<F, R, E, B>



export declare function fromOptionK<F extends URIS2>(
  F: FromEither2<F>,
): <E>(
  onNone: LazyArg<E>,
) => <A extends ReadonlyArray<unknown>, B>(f: (...a: A) => Option<B>) => (...a: A) => Kind2<F, E, B>



export declare function fromOptionK<F extends URIS2, E>(
  F: FromEither2C<F, E>,
): (
  onNone: LazyArg<E>,
) => <A extends ReadonlyArray<unknown>, B>(f: (...a: A) => Option<B>) => (...a: A) => Kind2<F, E, B>



export declare function fromOptionK<F>(
  F: FromEither<F>,
): <E>(
  onNone: LazyArg<E>,
) => <A extends ReadonlyArray<unknown>, B>(f: (...a: A) => Option<B>) => (...a: A) => HKT2<F, E, B>

Details

• Added in 0.1.0

License

• MIT – Copyright (c) 2017-present Giulio Canti