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/** * A `Supervisor<T>` is allowed to supervise the launching and termination of * fibers, producing some visible value of type `T` from the supervision. * * @since 2.0.0 */ import type * as Context from "./Context.js" import type * as Effect from "./Effect.js" import type * as Exit from "./Exit.js" import type * as Fiber from "./Fiber.js" import * as core from "./internal/core.js" import * as circular from "./internal/layer/circular.js" import * as internal from "./internal/supervisor.js" import type * as Layer from "./Layer.js" import type * as MutableRef from "./MutableRef.js" import type * as Option from "./Option.js" import type * as SortedSet from "./SortedSet.js" import type * as Types from "./Types.js" /** * @since 2.0.0 * @category symbols */ export const SupervisorTypeId: unique symbol = internal.SupervisorTypeId /** * @since 2.0.0 * @category symbols */ export type SupervisorTypeId = typeof SupervisorTypeId /** * @since 2.0.0 * @category models */ export interface Supervisor<out T> extends Supervisor.Variance<T> { /** * Returns an `Effect` that succeeds with the value produced by this * supervisor. This value may change over time, reflecting what the supervisor * produces as it supervises fibers. */ readonly value: Effect.Effect<T> /** * Supervises the start of a `Fiber`. */ onStart<A, E, R>( context: Context.Context<R>, effect: Effect.Effect<A, E, R>, parent: Option.Option<Fiber.RuntimeFiber<any, any>>, fiber: Fiber.RuntimeFiber<A, E> ): void /** * Supervises the end of a `Fiber`. */ onEnd<A, E>(value: Exit.Exit<A, E>, fiber: Fiber.RuntimeFiber<A, E>): void /** * Supervises the execution of an `Effect` by a `Fiber`. */ onEffect<A, E>(fiber: Fiber.RuntimeFiber<A, E>, effect: Effect.Effect<any, any, any>): void /** * Supervises the suspension of a computation running within a `Fiber`. */ onSuspend<A, E>(fiber: Fiber.RuntimeFiber<A, E>): void /** * Supervises the resumption of a computation running within a `Fiber`. */ onResume<A, E>(fiber: Fiber.RuntimeFiber<A, E>): void /** * Maps this supervisor to another one, which has the same effect, but whose * value has been transformed by the specified function. */ map<B>(f: (a: T) => B): Supervisor<B> /** * Returns a new supervisor that performs the function of this supervisor, and * the function of the specified supervisor, producing a tuple of the outputs * produced by both supervisors. */ zip<A>(right: Supervisor<A>): Supervisor<[T, A]> } /** * @since 2.0.0 */ export declare namespace Supervisor { /** * @since 2.0.0 * @category models */ export interface Variance<out T> { readonly [SupervisorTypeId]: { readonly _T: Types.Covariant<T> } } } /** * @since 2.0.0 * @category context */ export const addSupervisor: <A>(supervisor: Supervisor<A>) => Layer.Layer<never> = circular.addSupervisor /** * Creates a new supervisor that tracks children in a set. * * @since 2.0.0 * @category constructors */ export const fibersIn: ( ref: MutableRef.MutableRef<SortedSet.SortedSet<Fiber.RuntimeFiber<any, any>>> ) => Effect.Effect<Supervisor<SortedSet.SortedSet<Fiber.RuntimeFiber<any, any>>>> = internal.fibersIn /** * Creates a new supervisor that constantly yields effect when polled * * @since 2.0.0 * @category constructors */ export const fromEffect: <A>(effect: Effect.Effect<A>) => Supervisor<A> = internal.fromEffect /** * A supervisor that doesn't do anything in response to supervision events. * * @since 2.0.0 * @category constructors */ export const none: Supervisor<void> = internal.none /** * Creates a new supervisor that tracks children in a set. * * @since 2.0.0 * @category constructors */ export const track: Effect.Effect<Supervisor<Array<Fiber.RuntimeFiber<any, any>>>> = internal.track /** * Unsafely creates a new supervisor that tracks children in a set. * * @since 2.0.0 * @category unsafe */ export const unsafeTrack: () => Supervisor<Array<Fiber.RuntimeFiber<any, any>>> = internal.unsafeTrack /** * @since 2.0.0 * @category constructors */ export abstract class AbstractSupervisor<T> implements Supervisor<T> { /** * @since 2.0.0 */ abstract value: Effect.Effect<T> /** * @since 2.0.0 */ onStart<A, E, R>( _context: Context.Context<R>, _effect: Effect.Effect<A, E, R>, _parent: Option.Option<Fiber.RuntimeFiber<any, any>>, _fiber: Fiber.RuntimeFiber<A, E> ): void { // } /** * @since 2.0.0 */ onEnd<A, E>( _value: Exit.Exit<A, E>, _fiber: Fiber.RuntimeFiber<A, E> ): void { // } /** * @since 2.0.0 */ onEffect<A, E>( _fiber: Fiber.RuntimeFiber<A, E>, _effect: Effect.Effect<any, any, any> ): void { // } /** * @since 2.0.0 */ onSuspend<A, E>( _fiber: Fiber.RuntimeFiber<A, E> ): void { // } /** * @since 2.0.0 */ onResume<A, E>( _fiber: Fiber.RuntimeFiber<A, E> ): void { // } /** * @since 2.0.0 */ map<B>(f: (a: T) => B): Supervisor<B> { return new internal.ProxySupervisor(this, core.map(this.value, f)) } /** * @since 2.0.0 */ zip<A>( right: Supervisor<A> ): Supervisor<[T, A]> { return new internal.Zip(this, right) } /** * @since 2.0.0 */ onRun<E, A, X>(execution: () => X, _fiber: Fiber.RuntimeFiber<A, E>): X { return execution() } /** * @since 2.0.0 */ readonly [SupervisorTypeId]: { _T: (_: never) => never } = internal.supervisorVariance }