Unfortunately, JS does not lend itself to ease of maintenance - it is bad that it became language for the web browsers.

You get dynamic weak typing making reuse more complex, unpredictable (nonlinear in performance with coffee changes) GC and JIT, weird type system. No error handling facilities in the language either.

Heck, compared to JS even modern Java (which shares the GC and JIT unpredictability) or C++ (incl. arcane syntax and less safety if you like living dangerously) seem easy to achieve predictable results with.

Rust takes more work you front - but not that much more.