Redux-Kotlin-Thunk

A redux Thunk implementation for async action dispatch. A Thunk must conform to the Thunk typealias, which is a function with 3 paramaters: dispatch, getState, & extraArg. A common use is to make a function return a Thunk. This allows passing params to the function.

NOTE: Before v0.4.0 Thunk was an interface. Kotlin 1.3.70 fixed a bug which allows using a typealias instead, which is more concise and closer to the JS implementation.

val store = createStore(::reducer, applymiddleware(createThunkMiddleware()))

...

fun fooThunk(query: String): Thunk<AppState> = { dispatch, getState, extraArg ->
    dispatch(FetchingFooAction)
    launch {
        val result = api.foo(query)
        if (result.isSuccessful()) {
            dispatch(FetchFooSuccess(result.payload)
        } else {
            dispatch(FetchFooFailure(result.message)
        }
    }  
}

...

fun bar() {
   dispatch(fooThunk("my query")) 
}

How to add to project:

Artifacts are hosted on maven central. For multiplatform, add the following to your shared module:

kotlin {
  sourceSets {
        commonMain { //   <---  name may vary on your project
            dependencies {
                implementation("org.reduxkotlin:redux-kotlin-thunk:_")
            }
        }
 }

For JVM only:

implementation("org.reduxkotlin:redux-kotlin-thunk-jvm:_")