I know that for a language like c++, the compiler can prune dead code. But I mean for the often-lamented "4gb-electron text editor" something that could nibble

I know that for a language like c++, the compiler can prune dead code. But I mean for the often-lamented "4gb-electron text editor" something that could nibble away at the redundancy gradually during runtime, dynamically reducing and refactoring. Until it approaches the efficiency of a native compiled application.