Spending more time debugging a language than actually writing code

it's the javascript/typescript-way.

I ran into a node optimization flaw that screwed up my code.

`(a || b).foo()` caused the runtime to replace all references of `a` earlier in the function with a shallow copy missing its inheritance. Using `a ??= b` and `a.foo()` instead avoided this. Very odd, and took awhile to troubleshoot.

@jestdotty Not my first run-in with compilers, unfortunately. Most were with MSVC++