[pdimitar]

JS most of the time works inside some of the biggest and most strictly reviewed software packages in the world -- the browsers. JS needn't be concerned with memory safety, only not to allow (too big of a) memory leak.

Rust solves another problem. Most of the security vulnerabilities out there come from buffer underflows or overflows.

Rewriting tools people rely on every day in a language that prevents those is not failing to learn from JS.