number-munchers/reducers/welcome/welcome.reducer.js

const Immutable = require('immutable');

import * as WelcomeActions from '../../actions/welcome/welcome.actions';

const initial = {
    scores: [
        { initials: "AAA", score: "0", rank: "1" },
        { initials: "AAA", score: "0", rank: "1" },
        { initials: "AAA", score: "0", rank: "1" },
        { initials: "AAA", score: "0", rank: "1" },
        { initials: "AAA", score: "0", rank: "1" },
        { initials: "AAA", score: "0", rank: "1" }
    ],

    initials: [
        { initial: 'A', active: true },
        { initial: 'A', active: false },
        { initial: 'A', active: false }
    ]
};

const reducer = (state = initial, action) => {
    if (action.type !== WelcomeActions.WELCOME_ACTION) {
        return state;
    }

    // if (action.action === WelcomeActions.UPDATE_SCORES) {
        // return action.scores;
    // }
    switch (action.action) {
        case WelcomeActions.UPDATE_INITIALS:
            return Immutable.Map(state)
                .set('initials', action.initials)
                .toObject();
    }

    return state;
};

export default reducer;