How can I return a valid JSON response with React-Router and an Express backend?

Question

I have a setup similar to the one in this tutorial. How can I render JSON alone (no HTML) without having to specify the port number for the route specified in index.js

Answer 1

Rewriting the URL before passing it upstream within Nginx solved my problem:

location / {
    rewrite ^/u/(.*)$ /actors/$1 last;
    proxy_pass http://localhost:5000;
}