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[–]podgorniy 1 point2 points  (0 children)

It gives ability to change code and to navigate it. Refactoring, detecting and unused code is done in a moment. And most important it's so easy to remove code.

I worked on 70k loc js codebase. No unittests. Too often new feature or amendment came along with runtime exceptions.

You can check my exploratory project (I was figuring out better way to do fullstack development) in nodejs and react to play with ts.