JS (the language) may never introduce breaking changes, but JS (the ecosystem) sure does. With a quite normal react app, breaking changes are a constant battle.

JS (the language) may never introduce breaking changes, but JS (the ecosystem) sure does. With a quite normal react app, breaking changes are a constant battle. Clone the repo, oops, one package was upgraded that broke another; upgrade that one, oops, it breaks another. The package manager is supposed to deal with that, but it (effectively) doesn't.