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crystal.react.hooks.package.scala Maven / Gradle / Ivy

// Copyright (c) 2016-2023 Association of Universities for Research in Astronomy, Inc. (AURA)
// For license information see LICENSE or https://opensource.org/licenses/BSD-3-Clause

package crystal.react.hooks

import cats.effect.Fiber
import cats.effect.Resource
import cats.syntax.all.*
import crystal.Pot
import crystal.react.reuse.*
import japgolly.scalajs.react.util.DefaultEffects.Async as DefaultA

export UseSingleEffect.syntax.*, UseSerialState.syntax.*, UseStateCallback.syntax.*,
  UseStateView.syntax.*, UseStateViewWithReuse.syntax.*, UseSerialStateView.syntax.*,
  UseAsyncEffect.syntax.*, UseEffectResult.syntax.*, UseResource.syntax.*,
  UseStreamResource.syntax.*, UseEffectWhenDepsReady.syntax.*, UseEffectStreamResource.syntax.*,
  UseShadowRef.syntax.*, UseThrottlingStateView.syntax.*

type UnitFiber[F[_]] = Fiber[F, Throwable, Unit]

type StreamResource[A] = Resource[DefaultA, fs2.Stream[DefaultA, A]]

protected[hooks] type NeverReuse = Reuse[Unit]
protected[hooks] val NeverReuse: NeverReuse = ().reuseNever

protected[hooks] case class WithDeps[D, A](deps: D, fromDeps: D => A)

protected[hooks] enum WithPotDeps[D, A, R](
  val deps:       Pot[D],
  val fromDeps:   D => A,
  val reuseValue: Option[R]
):
  case WhenReady[D, A](override val deps: Pot[D], override val fromDeps: D => A)
      extends WithPotDeps[D, A, Unit](deps, fromDeps, deps.toOption.void)
  case WhenReadyOrChange[D, A](override val deps: Pot[D], override val fromDeps: D => A)
      extends WithPotDeps[D, A, D](deps, fromDeps, deps.toOption)