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monocle-ts

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A porting of scala monocle library to TypeScript

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/** * **This module is experimental** * * Experimental features are published in order to get early feedback from the community. * * A feature tagged as _Experimental_ is in a high state of flux, you're at risk of it changing without notice. * * A `Lens` is an optic used to zoom inside a product. * * `Lens`es have two type parameters generally called `S` and `A`: `Lens<S, A>` where `S` represents the product and `A` * an element inside of `S`. * * Laws: * * 1. `get(set(a)(s)) = a` * 2. `set(get(s))(s) = s` * 3. `set(a)(set(a)(s)) = set(a)(s)` * * @since 2.3.0 */ import { Category2 } from 'fp-ts/lib/Category' import { Either } from 'fp-ts/lib/Either' import { Predicate, Refinement } from 'fp-ts/lib/function' import { Functor, Functor1, Functor2, Functor3 } from 'fp-ts/lib/Functor' import { HKT, Kind, Kind2, Kind3, URIS, URIS2, URIS3 } from 'fp-ts/lib/HKT' import { Invariant2 } from 'fp-ts/lib/Invariant' import { Option } from 'fp-ts/lib/Option' import { ReadonlyNonEmptyArray } from 'fp-ts/lib/ReadonlyNonEmptyArray' import { ReadonlyRecord } from 'fp-ts/lib/ReadonlyRecord' import { Semigroupoid2 } from 'fp-ts/lib/Semigroupoid' import { Traversable1 } from 'fp-ts/lib/Traversable' import { Iso } from './Iso' import { Optional } from './Optional' import { Prism } from './Prism' import { Traversal } from './Traversal' /** * @category model * @since 2.3.0 */ export interface Lens<S, A> { readonly get: (s: S) => A readonly set: (a: A) => (s: S) => S } /** * @category constructors * @since 2.3.8 */ export declare const lens: <S, A>(get: Lens<S, A>['get'], set: Lens<S, A>['set']) => Lens<S, A> /** * @category constructors * @since 2.3.0 */ export declare const id: <S>() => Lens<S, S> /** * View a `Lens` as a `Optional`. * * @category converters * @since 2.3.0 */ export declare const asOptional: <S, A>(sa: Lens<S, A>) => Optional<S, A> /** * View a `Lens` as a `Traversal`. * * @category converters * @since 2.3.0 */ export declare const asTraversal: <S, A>(sa: Lens<S, A>) => Traversal<S, A> /** * Compose a `Lens` with a `Lens`. * * @category compositions * @since 2.3.0 */ export declare const compose: <A, B>(ab: Lens<A, B>) => <S>(sa: Lens<S, A>) => Lens<S, B> /** * Alias of `compose`. * * @category compositions * @since 2.3.8 */ export declare const composeLens: <A, B>(ab: Lens<A, B>) => <S>(sa: Lens<S, A>) => Lens<S, B> /** * Compose a `Lens` with a `Iso`. * * @category compositions * @since 2.3.8 */ export declare const composeIso: <A, B>(ab: Iso<A, B>) => <S>(sa: Lens<S, A>) => Lens<S, B> /** * Compose a `Lens` with a `Prism`. * * @category compositions * @since 2.3.0 */ export declare const composePrism: <A, B>(ab: Prism<A, B>) => <S>(sa: Lens<S, A>) => Optional<S, B> /** * Compose a `Lens` with an `Optional`. * * @category compositions * @since 2.3.0 */ export declare const composeOptional: <A, B>(ab: Optional<A, B>) => <S>(sa: Lens<S, A>) => Optional<S, B> /** * Compose a `Lens` with an `Traversal`. * * @category compositions * @since 2.3.8 */ export declare const composeTraversal: <A, B>(ab: Traversal<A, B>) => <S>(sa: Lens<S, A>) => Traversal<S, B> /** * @category combinators * @since 2.3.0 */ export declare const modify: <A, B extends A = A>(f: (a: A) => B) => <S>(sa: Lens<S, A>) => (s: S) => S /** * @category combinators * @since 2.3.5 */ export declare function modifyF<F extends URIS3>( F: Functor3<F> ): <A, R, E>(f: (a: A) => Kind3<F, R, E, A>) => <S>(sa: Lens<S, A>) => (s: S) => Kind3<F, R, E, S> export declare function modifyF<F extends URIS2>( F: Functor2<F> ): <A, E>(f: (a: A) => Kind2<F, E, A>) => <S>(sa: Lens<S, A>) => (s: S) => Kind2<F, E, S> export declare function modifyF<F extends URIS>( F: Functor1<F> ): <A>(f: (a: A) => Kind<F, A>) => <S>(sa: Lens<S, A>) => (s: S) => Kind<F, S> export declare function modifyF<F>( F: Functor<F> ): <A>(f: (a: A) => HKT<F, A>) => <S>(sa: Lens<S, A>) => (s: S) => HKT<F, S> /** * Return a `Optional` from a `Lens` focused on a nullable value. * * @category combinators * @since 2.3.0 */ export declare const fromNullable: <S, A>(sa: Lens<S, A>) => Optional<S, NonNullable<A>> /** * @category combinators * @since 2.3.0 */ export declare function filter<A, B extends A>(refinement: Refinement<A, B>): <S>(sa: Lens<S, A>) => Optional<S, B> export declare function filter<A>(predicate: Predicate<A>): <S>(sa: Lens<S, A>) => Optional<S, A> /** * Return a `Lens` from a `Lens` and a prop. * * @category combinators * @since 2.3.0 */ export declare const prop: <A, P extends keyof A>(prop: P) => <S>(sa: Lens<S, A>) => Lens<S, A[P]> /** * Return a `Lens` from a `Lens` and a list of props. * * @category combinators * @since 2.3.0 */ export declare const props: <A, P extends keyof A>( ...props: readonly [P, P, ...ReadonlyArray<P>] ) => <S>( sa: Lens<S, A> ) => Lens< S, { [K in P]: A[K] } > /** * Return a `Lens` from a `Lens` focused on a component of a tuple. * * @category combinators * @since 2.3.0 */ export declare const component: <A extends ReadonlyArray<unknown>, P extends keyof A>( prop: P ) => <S>(sa: Lens<S, A>) => Lens<S, A[P]> /** * Return a `Optional` from a `Lens` focused on an index of a `ReadonlyArray`. * * @category combinators * @since 2.3.0 */ export declare const index: (i: number) => <S, A>(sa: Lens<S, readonly A[]>) => Optional<S, A> /** * Return a `Optional` from a `Lens` focused on an index of a `ReadonlyNonEmptyArray`. * * @category combinators * @since 2.3.8 */ export declare const indexNonEmpty: (i: number) => <S, A>(sa: Lens<S, ReadonlyNonEmptyArray<A>>) => Optional<S, A> /** * Return a `Optional` from a `Lens` focused on a key of a `ReadonlyRecord`. * * @category combinators * @since 2.3.0 */ export declare const key: (key: string) => <S, A>(sa: Lens<S, Readonly<Record<string, A>>>) => Optional<S, A> /** * Return a `Lens` from a `Lens` focused on a required key of a `ReadonlyRecord`. * * @category combinators * @since 2.3.0 */ export declare const atKey: (key: string) => <S, A>(sa: Lens<S, ReadonlyRecord<string, A>>) => Lens<S, Option<A>> /** * Return a `Optional` from a `Lens` focused on the `Some` of a `Option` type. * * @category combinators * @since 2.3.0 */ export declare const some: <S, A>(soa: Lens<S, Option<A>>) => Optional<S, A> /** * Return a `Optional` from a `Lens` focused on the `Right` of a `Either` type. * * @category combinators * @since 2.3.0 */ export declare const right: <S, E, A>(sea: Lens<S, Either<E, A>>) => Optional<S, A> /** * Return a `Optional` from a `Lens` focused on the `Left` of a `Either` type. * * @category combinators * @since 2.3.0 */ export declare const left: <S, E, A>(sea: Lens<S, Either<E, A>>) => Optional<S, E> /** * Return a `Traversal` from a `Lens` focused on a `Traversable`. * * @category combinators * @since 2.3.0 */ export declare function traverse<T extends URIS>( T: Traversable1<T> ): <S, A>(sta: Lens<S, Kind<T, A>>) => Traversal<S, A> /** * @category combinators * @since 2.3.2 */ export declare function findFirst<A, B extends A>( refinement: Refinement<A, B> ): <S>(sa: Lens<S, ReadonlyArray<A>>) => Optional<S, B> export declare function findFirst<A>(predicate: Predicate<A>): <S>(sa: Lens<S, ReadonlyArray<A>>) => Optional<S, A> /** * @category combinators * @since 2.3.8 */ export declare function findFirstNonEmpty<A, B extends A>( refinement: Refinement<A, B> ): <S>(sa: Lens<S, ReadonlyNonEmptyArray<A>>) => Optional<S, B> export declare function findFirstNonEmpty<A>( predicate: Predicate<A> ): <S>(sa: Lens<S, ReadonlyNonEmptyArray<A>>) => Optional<S, A> /** * @category Invariant * @since 2.3.0 */ export declare const imap: <A, B>(f: (a: A) => B, g: (b: B) => A) => <E>(sa: Lens<E, A>) => Lens<E, B> /** * @category instances * @since 2.3.0 */ export declare const URI = 'monocle-ts/Lens' /** * @category instances * @since 2.3.0 */ export declare type URI = typeof URI declare module 'fp-ts/lib/HKT' { interface URItoKind2<E, A> { readonly [URI]: Lens<E, A> } } /** * @category instances * @since 2.3.0 */ export declare const Invariant: Invariant2<URI> /** * @category instances * @since 2.3.8 */ export declare const Semigroupoid: Semigroupoid2<URI> /** * @category instances * @since 2.3.0 */ export declare const Category: Category2<URI>