Currently mern-cli has generators for components(dumb, functional, container), models, routes, controllers.
merng dumb <componentname> //Generate a dumb React component
merng functional <componentName> //Generate a functional component
merng container <componentName //Generate a React component and connect to Redux store
merng route <routeName> //Generate an Express route and corresponding controller
merng model <modelName> //Generate a Mongoose Model
merng fullstack <modelName> // Generate a dumb component, Express route, controller and Mongoose Model