Redux middleware for simple fetches

fetchmid.js

const asyncFetchMiddleware = store => next => action => {
    let {type, request} = action;
    if (type.endsWith('_ASYNC')) {
        fetch(request)
        .then(response => response.json())
        .then(payload => store.dispatch({
            type: type.replace(/ASYNC$/, 'SUCCESS'),
            payload
        }))
        .catch(payload => store.dispatch({
            type: type.replace(/ASYNC$/, 'FAILURE'),
            payload
        }))
    }
    return next(action);
};