TypeScript Is Not Optional Anymore

If there's one thing I'd change about my 2021 advice, it's this: TypeScript is no longer optional for professional development. It's a requirement.

It adds static typing to JavaScript which means you catch errors during development, not when your users do. In a regulated industry like finance, that robustness isn't a nice-to-have. It's essential.

The learning curve feels steep at first. But once it clicks, you won't want to go back. Your code becomes more predictable, easier to read, and far more maintainable as projects grow.

Start with Beginner's TypeScript it's the best structured intro I've found.