Hmm… I did find that I had a problem with a later example (when I introduced with Enzyme). I fixed that example a day or so ago. The example that you appear to be having trouble is the first one with React in it, .i.e., the react folder.
I just tried it again with the only dependency that I know of Node.js (I am using v8.9.4). Basically downloaded the repository fresh and then ran the following commands:
Can see why you were confused to see all those errors. If you want double-check your work; cannot think what is different between our environments?