[tanilama]

Typescript helps you to avoid most obvious bugs(wrong classes, non-existent properties, basically to escape the undefined hell) that is the point of it, which I really like and find enormously helpful for medium-size JS project (10k-50k LoC)

Also I don't think the transpiler argument holds in today's JS ecosystem. Everything is transpiled. Unless you are developing in barebone ES5 syntax and avoid babel as a whole, then some level of transpliation is inevitable. Yet, I didn't find debugging that much difficult with correct setup.

[cutler]

Why? ES6 has been widely supported for quite some time now.

[dragonwriter]

> ES6 has been widely supported for quite some time now.

ES6/2015, sure; ES2021, though...

For the latest useful JS features, you need a compiler, whether it's TypeScript or Babel or...

[jamesgeck0]

If you target browsers that are installed by default on operating systems that are still receiving security updates, you have to support Windows 8.1 and thus IE 11 for another two and a half years, alas.

[rictic]

IE11, unfortunately, isn't _quite_ dead yet, and ES6 is definitely not the last word in useful JS language features.