Chapter 17, page 335, Adding the ChatMessage Class
The example call to the ChatMessage constructor is incorrect.
The = should be replaced with :
Specifically, this:
new ChatMessage({message: 'hello from the outside',
user='adele25@bignerdranch.com', timestamp=1462399523859});
should be:
new ChatMessage({message: 'hello from the outside',
user: 'adele25@bignerdranch.com', timestamp: 1462399523859});