Cypress is just ...

Cypress allows any developer to fundamentally change how it looks and works, because it is just JavaScript code running inside a browser backed by a Node app.

Cypress jump

Create a React component using JSX and inject it into live application from a Cypress test.

Monads

Array, Promise and Maybe monads. Plus Docker is a functor.

How to crash

How to make sure your Express or Koa server correctly sends crashes to exception monitoring service.

Assertions

Comparing 3rd party assertion libraries expect.js, should.js, etc.