[sbergot]

Do you still put your seat belt in your car after 5+ years of driving experience? If yes, would you say that you do that because your driving skills are "plainly not good enough"?

Typescript allow you to spend less energy on minor issues like typos and more energy on design. It also provides you with the ability to reason locally about some code. When you inspect a function in js, you cannot know what are the contracts that it has to deal with. To be sure you have to unravel all the calling and called functions.

Typescript also enables better intellisense.

About your issues:

- I never had tsc dying on my hand in 5 years.

- About the transpilation noise: it can be as noisy as you want. Have you checked the default result for the es6 target? It litteraly look like your source code with only your type signatures stripped. The noise comes from the transpilation to lower versions and bundling and those are independent of typescript.