You should still know a language like Rust or Zig for systems work, and if you want to work in ML or data management you probably can't escape Python, but Typescript with Bun provides a really compelling development experience for most stuff outside that.
As fun side anecdote, if you're doing scientific computing in a variety of fields, Fortran 95 is mostly still fine ;)
I’ve seen undefined make it all the way to the backend and get persisted in the DB. As a string.
JS as a language just isn’t robust enough and it requires a level of defensive programming that’s inconvenient at best and a productivity sink at worst. Much like C++, it’s doable, but things are bound to slip through the cracks. I would actually say overall C++ is much more reasonable.
This is where I know that, some people, are not actually programming in either of these languages, but just writing meme driven posts.
JS has a few footguns. Certainly not so many that it's difficult to keep in your head, and not nearly as complex as C++, which is a laughable statement.
You've "seen null make it to the database," but haven't seen the exact same thing in C++? Worse, seen a corrupted heap?
I greatly prefer Java with Spring Boot for larger backend projects.
To answer your question directly - yes, it’s fine, it’s actually expected behavior.
