Modern Full-Stack Development

 The Real Star of the Show: Components
Let’s start things off by creating ourselves a plain old HTML document, like that shown in 
Listing 
3-1
.
Listing 3-1.  A basic HTML document to start building our simple React app with 
(if you don’t understand this already, then, Houston, we have a problem!)

  
    
    
  
  
  
    
  
    
  
    
  
    
  
   
 

Well, that’s kind of anticlimactic, isn’t it? Remember earlier when I said that 
Webpack will transform this file as appropriate to make the app work. Because of that, 
there’s not much for us to do here, so it’s a nice, simple HTML document with no real 
content. It’s a little weird that we don’t even import any JavaScript because obviously, 
that must happen at some point, or else MailBag isn’t going to do much! But that’s what 
Webpack takes care of for us, so we don’t even have to think about that much.