Yeah, there's a nice link in the comments on the chrome bug on how Lua does it with upvalues: https://bugs.chromium.org/p/chromium/issues/detail?id=315190#c14 h

Yeah, there's a nice link in the comments on the chrome bug on how Lua does it with upvalues: https://bugs.chromium.org/p/chromium/issues/detail?id=315190#c14 https://bugs.chromium.org/p/chromium/issues/detail?id=315190...