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Текущая директория: /usr/lib/node_modules/bitgo/node_modules/fp-ts/lib
Просмотр файла: IO.d.ts

/**
 * ```ts
 * interface IO<A> {
 *   (): A
 * }
 * ```
 *
 * `IO<A>` represents a non-deterministic synchronous computation that can cause side effects, yields a value of
 * type `A` and **never fails**.
 *
 * If you want to represent a synchronous computation that may fail, please see `IOEither`.
 * If you want to represent a synchronous computation that may yield nothing, please see `IOOption`.
 *
 * @since 2.0.0
 */
import { Applicative1 } from './Applicative'
import { Apply1 } from './Apply'
import * as chainable from './Chain'
import { ChainRec1 } from './ChainRec'
import { FromIO1 } from './FromIO'
import { Functor1 } from './Functor'
import { Monad1 } from './Monad'
import { MonadIO1 } from './MonadIO'
import { Monoid } from './Monoid'
import { Pointed1 } from './Pointed'
import { ReadonlyNonEmptyArray } from './ReadonlyNonEmptyArray'
import { Semigroup } from './Semigroup'
/**
 * @category model
 * @since 2.0.0
 */
export interface IO<A> {
  (): A
}
/**
 * `map` can be used to turn functions `(a: A) => B` into functions `(fa: F<A>) => F<B>` whose argument and return types
 * use the type constructor `F` to represent some computational context.
 *
 * @category mapping
 * @since 2.0.0
 */
export declare const map: <A, B>(f: (a: A) => B) => (fa: IO<A>) => IO<B>
/**
 * @since 2.0.0
 */
export declare const ap: <A>(fa: IO<A>) => <B>(fab: IO<(a: A) => B>) => IO<B>
/**
 * @category constructors
 * @since 2.0.0
 */
export declare const of: <A>(a: A) => IO<A>
/**
 * @category sequencing
 * @since 2.14.0
 */
export declare const flatMap: {
  <A, B>(f: (a: A) => IO<B>): (ma: IO<A>) => IO<B>
  <A, B>(ma: IO<A>, f: (a: A) => IO<B>): IO<B>
}
/**
 * @category sequencing
 * @since 2.0.0
 */
export declare const flatten: <A>(mma: IO<IO<A>>) => IO<A>
/**
 * @category type lambdas
 * @since 2.0.0
 */
export declare const URI = 'IO'
/**
 * @category type lambdas
 * @since 2.0.0
 */
export type URI = typeof URI
declare module './HKT' {
  interface URItoKind<A> {
    readonly [URI]: IO<A>
  }
}
/**
 * @category instances
 * @since 2.7.0
 */
export declare const Functor: Functor1<URI>
/**
 * Maps the value to the specified constant value.
 *
 * @category mapping
 * @since 2.16.0
 */
export declare const as: {
  <A>(a: A): <_>(self: IO<_>) => IO<A>
  <_, A>(self: IO<_>, a: A): IO<A>
}
/**
 * Maps the value to the void constant value.
 *
 * @category mapping
 * @since 2.16.0
 */
export declare const asUnit: <_>(self: IO<_>) => IO<void>
/**
 * @category mapping
 * @since 2.10.0
 */
export declare const flap: <A>(
  a: A
) => <B>(fab: import('./HKT').Kind<'IO', (a: A) => B>) => import('./HKT').Kind<'IO', B>
/**
 * @category instances
 * @since 2.10.0
 */
export declare const Pointed: Pointed1<URI>
/**
 * @category instances
 * @since 2.10.0
 */
export declare const Apply: Apply1<URI>
/**
 * Combine two effectful actions, keeping only the result of the first.
 *
 * @since 2.0.0
 */
export declare const apFirst: <B>(
  second: IO<B>
) => <A>(first: import('./HKT').Kind<'IO', A>) => import('./HKT').Kind<'IO', A>
/**
 * Combine two effectful actions, keeping only the result of the second.
 *
 * @since 2.0.0
 */
export declare const apSecond: <B>(
  second: IO<B>
) => <A>(first: import('./HKT').Kind<'IO', A>) => import('./HKT').Kind<'IO', B>
/**
 * @category instances
 * @since 2.7.0
 */
export declare const Applicative: Applicative1<URI>
/**
 * @category instances
 * @since 2.10.0
 */
export declare const Chain: chainable.Chain1<URI>
/**
 * @category instances
 * @since 2.7.0
 */
export declare const Monad: Monad1<URI>
/**
 * Composes computations in sequence, using the return value of one computation to determine the next computation and
 * keeping only the result of the first.
 *
 * @category combinators
 * @since 2.15.0
 */
export declare const tap: {
  <A, _>(self: IO<A>, f: (a: A) => IO<_>): IO<A>
  <A, _>(f: (a: A) => IO<_>): (self: IO<A>) => IO<A>
}
/**
 * @category zone of death
 * @since 2.7.0
 * @deprecated
 */
export declare const fromIO: <A>(fa: IO<A>) => IO<A>
/**
 * @category instances
 * @since 2.7.0
 */
export declare const MonadIO: MonadIO1<URI>
/**
 * @category instances
 * @since 2.7.0
 */
export declare const ChainRec: ChainRec1<URI>
/**
 * @category instances
 * @since 2.10.0
 */
export declare const FromIO: FromIO1<URI>
/**
 * @category do notation
 * @since 2.9.0
 */
export declare const Do: IO<{}>
/**
 * @category do notation
 * @since 2.8.0
 */
export declare const bindTo: <N extends string>(
  name: N
) => <A>(fa: import('./HKT').Kind<'IO', A>) => import('./HKT').Kind<'IO', { readonly [K in N]: A }>
declare const let_: <N extends string, A, B>(
  name: Exclude<N, keyof A>,
  f: (a: A) => B
) => (
  fa: import('./HKT').Kind<'IO', A>
) => import('./HKT').Kind<'IO', { readonly [K in keyof A | N]: K extends keyof A ? A[K] : B }>
export {
  /**
   * @category do notation
   * @since 2.13.0
   */
  let_ as let
}
/**
 * @category do notation
 * @since 2.8.0
 */
export declare const bind: <N extends string, A, B>(
  name: Exclude<N, keyof A>,
  f: (a: A) => import('./HKT').Kind<'IO', B>
) => (
  ma: import('./HKT').Kind<'IO', A>
) => import('./HKT').Kind<'IO', { readonly [K in keyof A | N]: K extends keyof A ? A[K] : B }>
/**
 * @category do notation
 * @since 2.8.0
 */
export declare const apS: <N extends string, A, B>(
  name: Exclude<N, keyof A>,
  fb: IO<B>
) => (
  fa: import('./HKT').Kind<'IO', A>
) => import('./HKT').Kind<'IO', { readonly [K in keyof A | N]: K extends keyof A ? A[K] : B }>
/**
 * @since 2.11.0
 */
export declare const ApT: IO<readonly []>
/**
 * Equivalent to `ReadonlyNonEmptyArray#traverseWithIndex(Applicative)`.
 *
 * @category traversing
 * @since 2.11.0
 */
export declare const traverseReadonlyNonEmptyArrayWithIndex: <A, B>(
  f: (index: number, a: A) => IO<B>
) => (as: ReadonlyNonEmptyArray<A>) => IO<ReadonlyNonEmptyArray<B>>
/**
 * Equivalent to `ReadonlyArray#traverseWithIndex(Applicative)`.
 *
 * @category traversing
 * @since 2.11.0
 */
export declare const traverseReadonlyArrayWithIndex: <A, B>(
  f: (index: number, a: A) => IO<B>
) => (as: ReadonlyArray<A>) => IO<ReadonlyArray<B>>
/**
 * Equivalent to `ReadonlyArray#traverseWithIndex(Applicative)`.
 *
 * @category traversing
 * @since 2.9.0
 */
export declare const traverseArrayWithIndex: <A, B>(
  f: (index: number, a: A) => IO<B>
) => (as: ReadonlyArray<A>) => IO<ReadonlyArray<B>>
/**
 * Equivalent to `ReadonlyArray#traverse(Applicative)`.
 *
 * @category traversing
 * @since 2.9.0
 */
export declare const traverseArray: <A, B>(f: (a: A) => IO<B>) => (as: ReadonlyArray<A>) => IO<ReadonlyArray<B>>
/**
 * Equivalent to `ReadonlyArray#sequence(Applicative)`.
 *
 * @category traversing
 * @since 2.9.0
 */
export declare const sequenceArray: <A>(arr: ReadonlyArray<IO<A>>) => IO<ReadonlyArray<A>>
/**
 * Alias of `flatMap`.
 *
 * @category legacy
 * @since 2.0.0
 */
export declare const chain: <A, B>(f: (a: A) => IO<B>) => (ma: IO<A>) => IO<B>
/**
 * Alias of `tap`.
 *
 * @category legacy
 * @since 2.0.0
 */
export declare const chainFirst: <A, B>(f: (a: A) => IO<B>) => (first: IO<A>) => IO<A>
/**
 * This instance is deprecated, use small, specific instances instead.
 * For example if a function needs a `Functor` instance, pass `IO.Functor` instead of `IO.io`
 * (where `IO` is from `import IO from 'fp-ts/IO'`)
 *
 * @category zone of death
 * @since 2.0.0
 * @deprecated
 */
export declare const io: Monad1<URI> & MonadIO1<URI> & ChainRec1<URI>
/**
 * Use [`getApplySemigroup`](./Apply.ts.html#getapplysemigroup) instead.
 *
 * @category zone of death
 * @since 2.0.0
 * @deprecated
 */
export declare const getSemigroup: <A>(S: Semigroup<A>) => Semigroup<IO<A>>
/**
 * Use [`getApplicativeMonoid`](./Applicative.ts.html#getapplicativemonoid) instead.
 *
 * @category zone of death
 * @since 2.0.0
 * @deprecated
 */
export declare const getMonoid: <A>(M: Monoid<A>) => Monoid<IO<A>>
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