Matt Pocock

When you think of the hardest thing about TypeScript, the word 'generics' comes to mind. Generics feel mystical, impossible to grok - but powerful. Generics are at the heart of TypeScript's most powerful abstractions, from Zod to tRPC to your frontend framework.

The truth is that there's no such thing as a 'generic' in TypeScript. There are type arguments, and type parameters. There are generic types. Generic functions. Generic classes. And once you realise that, their power unlocks itself.