> Anyway, I didn't say it was "inferior to defer", I said that it seemed more error-prone than RAII in languages like Rust and C++. It is, but RAII really isn'

> Anyway, I didn't say it was "inferior to defer", I said that it seemed more error-prone than RAII in languages like Rust and C++. It is, but RAII really isn't an option if you have an advanced GC, as it is lifetime-based and requires deterministic destruction of individual objects, and much of the performance of an advanced GC comes from not doing that. Most GC'd language have some sort of finalizers (so does javascript: https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/FinalizationRegistry https://developer.mozilla.org/en-US/docs/Web/JavaScript/Refe...) but those are unreliable and often have subtle footguns when used for cleanup.