Set a Content Security Policy with helmet.contentSecurityPolicy()
Hints
Hint 1
You want your app to use helmet’s contentSecurityPolicy() method.
Hint 2
Be sure to give the directives object in the configuration a defaultSrc and scriptSrc.
Solutions
Solution 1 (Click to Show/Hide)
In the myApp.js file, add app.use(helmet.contentSecurityPolicy({ directives: { defaultSrc: ["'self'"], scriptSrc: ["'self'", "trusted-cdn.com"] }} )) under the tenth instruction.
Note: Be sure to submit the link to the live demo of your project.