James Wright explores the possibilities for using constructs to achieve compile-time immutability in TypeScript with const assertions and recursive types.
Are you thinking of trying React but aren't sure where to start? Then Craig Bilner's yuletide round up of React and the surrounding technologies is for you.
Andrew Carter explains the Flyweight Design Pattern - a relatively unknown pattern in PHP land - using the familiar example of a FileFactory and enums.
In this article Christian Johansen gives you an example of how immutability can be used with React, the well-known library developed by Facebook.