It seems like the right way to do this is by modifying your runtime. The author's solution proves their point about WeakMap but I don't see how I would use it

It seems like the right way to do this is by modifying your runtime. The author's solution proves their point about WeakMap but I don't see how I would use it to practically detect memory leaks in my own programs. Most importantly: > If you are writing an application in Javascript, soon you will have to worry about memory leaks. I wrote many applications in Javascript before I had to worry about memory leaks.