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Helper function for use with realm npm package
version 1.0.6
license BSD3
native-modules False
elm-version 0.18.0 <= v < 0.19.0
Tag 1.0.6
Committed At 2016-12-12 16:37:30 UTC
elm-lang/core 5.0.0 <= v < 6.0.0 5.1.1




Realm is an alternate implementation of Redux using Elm. Actions are created in JavaScript with a payload, which is sent through ports into your Elm store. Elm performs the role of a reducer in Redux, and sends the new state back to JavaScript.



npm install @aardito2/realm

createStore(elmStore, initialState = {}, enhancer)

// using elm-webpack-loader
import elmStore from './store.elm';

const initialState = {};
const store = createStore(elmStore.Store, initialState);


See Redux docs.

createAction(actionType) => payload => action

const INCREMENT = 'increment';
const increment = createAction(INCREMENT);

const SET_STRING = 'set_string';
const setString = createAction(SET_STRING);




elm-package install @aardito2/realm

Your Elm file should be a Platform.programWithFlags. In main, your update should use Realm.updateState, which takes an outgoing port and an update function and returns a new update function which will automatically send your updated state back to JavaScript. Your outgoing port will have the signature model -> Cmd msg. This port must be named nextState! For each action used in JavaScript, two things are required:

  1. An incoming port with the same name as the action type.
  2. A subscription to the above port which converts the incoming action into a Msg to be handled by your update function. See store.elm for a full example of the structure of the store in Elm.