I see many developers moving back to JSDoc for some projects, claiming it is faster. As an SEO specialist and developer, I want to know if the type-safety of TypeScript is worth the overhead for smaller builds, or if modern IDEs provide enough support with plain JS and JSDoc annotations?
3 answers
While JSDoc is gaining traction—most notably with the Svelte team—TypeScript remains the gold standard for team collaboration. The "overhead" of TypeScript pays for itself the moment you need to refactor your code or when a new developer joins the project. The ability to catch errors at compile-time rather than runtime is an insurance policy that saves hours of debugging. For small projects, you can always use a "loose" configuration, but for anything that might grow, starting with TypeScript is a strategic move that ensures the codebase remains healthy and scalable.
Does your team find that the build step required for TypeScript significantly slows down your deployment pipeline compared to plain JavaScript?
TypeScript is essential because it serves as living documentation for your functions and variables, making the code much easier to navigate.
I agree with Patricia; the autocomplete features alone make me twice as productive compared to writing standard JavaScript without types.
Christopher, with modern build tools like esbuild or SWC, the transpilation time for TypeScript is nearly instantaneous. The bottleneck is usually the type-checking, which can be run in parallel or only during CI/CD to keep the development experience fast.