For what its worth, it looks like v8 has had incremental GC since 2011 ( http://blog.chromium.org/2011/11/game-changer-for-interactive.html http://blog.chromium

For what its worth, it looks like v8 has had incremental GC since 2011 ( http://blog.chromium.org/2011/11/game-changer-for-interactive.html http://blog.chromium.org/2011/11/game-changer-for-interactiv... and generational GC for longer) while Firefox has had IGC since 2012 ( https://blog.mozilla.org/javascript/2012/08/28/incremental-gc-in-firefox-16/ https://blog.mozilla.org/javascript/2012/08/28/incremental-g... ).