The beta of TypeScript 4.2 has been released and ships with long-awaited smarter type alias preservation, leading/middle rest elements in tuple types, and other improvements, as usual.
It’s common to use single-letter names for generic type parameters, but it doesn’t have to be that way. Types are documentation, and type parameters can have descriptive names.
Code autocompletion, intuitive errors, and using code to clearly communicate with your teammates? Yes, please! Orta Therox teaches us how TypeScript-powered JavaScript gives us all this and more.