redux-essentials-with-fetch.js

//dashboard reducer
export default (allLists = [], action) => {
    switch (action.type) {
        case 'DASHBORD_FETCH_SUCCESS':
            return action.data
        case 'DASHBORD_FETCH_ERROR':
            return []
        default:
            return allLists
    }
}

export function fetchDashboard() {
    return fetch(`${API_BASE_URL}/dashboard`, {
        method: 'POST',
        headers: {
            'Content-Type': 'application/json'
            //token here
        }
    })
        .then(data => data.json())
        .then(dataObj => {
            dispatch({ type: 'DASHBORD_FETCH_SUCCESS', data: dataObj })
        }).catch(err => {
            dispatch({ type: 'DASHBORD_FETCH_ERROR' })
        })
}

fetchDashboard()