MsgReplay

This module helps you set up an Elm program with automatic message-replay.

Configuration

type alias Config flags msg =

{ encodeMsg : msg -> Value

, msgDecoder : Decoder msg

, fromCache : flags -> Maybe String

, toCache : String -> Cmd msg

}

This is the configuration required for automatic message-replay.

Let's say your program is initialized in HTML like this:

<script>
    const app = Elm.Main.init({
        node: document.body,
        flags: {
            msgs : localStorage.getItem("replay-msgs")
        }
    })


    app.ports.toCache.subscribe(msgs =>
        localStorage.setItem("replay-msgs", msgs)
    )
</script>

The configuration for that script would be like this:

port toCache : Maybe String -> Cmd msg


fromCache =
    .msgs

encodeMsg and msgDecoder depends on how messages are defined.

Programs

This API mirrors elm/browser.

sandbox :

Config flags msg

-> { init : model

, view : model -> Html msg

, update : msg -> model -> model

}

-> Program flags model msg

Create a “sandboxed” program that cannot communicate with the outside world. More about that here.

element :

Config flags msg

-> { init : flags -> ( model, Cmd msg )

, view : model -> Html msg

, update : msg -> model -> ( model, Cmd msg )

, subscriptions : model -> Sub msg

}

-> Program flags model msg

Create an HTML element managed by Elm. More about that here.

document :

Config flags msg

-> { init : flags -> ( model, Cmd msg )

, subscriptions : model -> Sub msg

, update : msg -> model -> ( model, Cmd msg )

, view : model -> Document msg

}

-> Program flags model msg

Create an HTML document managed by Elm. More about that here.

application :

Config flags msg

-> { init : flags -> Url -> Key -> ( model, Cmd msg )

, update : msg -> model -> ( model, Cmd msg )

, subscriptions : model -> Sub msg

, view : model -> Document msg

, onUrlChange : Url -> msg

, onUrlRequest : UrlRequest -> msg

}

-> Program flags model msg

Create an application that manages Url changes. More about that here.

type alias Program flags model msg =

Program flags (Model model) msg

A program with automatic message-replay enabled.

Modules

MsgReplay

opvasger/msg-replay/1.0.1

MsgReplay

Configuration

Programs

Modules