redux-store-builder/index.js

"use strict";

import {createStore, applyMiddleware} from 'redux';
import {composeReducers} from 'redux-sac';
import {effectsMiddleware} from 'redux-effex';

export default () => {
    let reducers = [], effects = [], middlewares = [], initialState;

    function withReducers (..._reducers) {
        reducers.push(..._reducers);
        return this;
    }

    function withEffects (..._effects) {
        effects.push(..._effects);
        return this;
    }

    function withMiddlewares (..._middlewares) {
        middlewares.push(..._middlewares);
        return this;
    }

    function withInitializers (...initializers) {
        initialState = initializers.reduce((soFar, each) => each(soFar), initialState);
        return this;
    }

    function create () {
        return createStore(
            composeReducers(...reducers),
            initialState,
            applyMiddleware(...middlewares, effectsMiddleware(effects))
        );
    }

    return {withReducers, withMiddlewares, withEffects, withInitializers, create};
}