React.Halo.Internal.Eval

evalHaloM :: forall action state props. HaloState props state action -> (HaloM props state action Aff) ~> Aff

Interprets HaloM into the base monad Aff for asynchronous effects.

evalHaloAp :: forall action state props. HaloState props state action -> (HaloAp props state action Aff) ~> ParAff

Interprets HaloAp into the base applicative ParAff for parallel effects.

evalHaloF :: forall action state props. HaloState props state action -> (HaloF props state action Aff) ~> Aff

Interprets HaloF into the base monad Aff, keeping track of state in HaloState.

type EvalSpec props state action m = { onAction :: action -> HaloM props state action m Unit, onFinalize :: Maybe action, onInitialize :: props -> Maybe action, onUpdate :: props -> props -> Maybe action }

A simpler interface for building the components eval function. The main lifecycle events map directly into actions, so only the action handling logic needs to be written using HaloM.

defaultEval :: forall m state action props. EvalSpec props state action m

The empty EvalSpec.

makeEval :: forall props state action m. (EvalSpec props state action m -> EvalSpec props state action m) -> Lifecycle props action -> HaloM props state action m Unit

Given an EvalSpec builder, it will return an eval function.

runAff :: Aff Unit -> Effect Unit

Simple way to run Aff logic asynchronously, while bringing errors back into Effect.

runInitialize :: forall action state props. HaloState props action state -> Effect Unit

handleUpdate :: forall action state props. HaloState props action state -> props -> Effect Unit

handleAction :: forall action state props. HaloState props state action -> action -> Effect Unit

runFinalize :: forall action state props. HaloState props state action -> Effect Unit