WeakRefs landed around 2020 (in Chrome 84), but SqueakJS was started in 2013 -- "November 2013 Project started (after seeing Dan's Smalltalk-72 emulator at Hack

WeakRefs landed around 2020 (in Chrome 84), but SqueakJS was started in 2013 -- "November 2013 Project started (after seeing Dan's Smalltalk-72 emulator at Hackers)" -- and that paper was written in 2014. https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/WeakRef https://developer.mozilla.org/en-US/docs/Web/JavaScript/Refe... https://freudenbergs.de/vanessa/publications/Freudenberg-2014-SqueakJS.pdf https://freudenbergs.de/vanessa/publications/Freudenberg-201... https://squeak.js.org/ https://squeak.js.org/