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Hello @GreenSock Jack or somebody else who could help met with this, For a while now I'm using webpack together with the gsap npm package and uglifyjs. I keep things up to date and so far everything was working fine, until today. After updating the gsap package from 1.20.4 to 1.20.6 suddenly uglifyJs starts complaining. I only updated gsap, so only the gsap module has changed. I just found out gsap 1.20.4 works fine, and the problem starts with gsap 1.20.5: After searching for a solution I found that gsap 1.20.5 contains es6 code, which is not there in 1.20.4. This is what I see in TweenLite (1.20.5): const gs = _gsScope.com.greensock; export { TweenLite as default }; export const SimpleTimeline = gs.core.SimpleTimeline; export const Animation = gs.core.Animation; export const {Ease, Linear, Power0, Power1, Power2, Power3, Power4, TweenPlugin} = _gsScope; export const EventDispatcher = gs.events.EventDispatcher; UglifyJs here complains about the constant destructuring on the forelast line which it doesn't understand: 'Name expected' But even if it did understand it and continues its process, I would had a problem, because my project should output es5 and uglifyjs comes after transpiling. So this untranspiled es6 code is causing problems with uglifyJs in the webpack workflow. Also the minified versions of gsap 1.20.5 seem to have untranspiled es6 code now. I can't set UglifyJs to be on es6, because I want my project to output es5 code and uglifyJs is after the transpiling, like it should in webpack. My own projectcode is written in es6 and I use webpack babel to transpile to es5, but Babel is not transpiling the node_modules folder and I really like to keep it that way and think of that as best practice. I see most of the gsap code still is written in es5, so my guess would be something went wrong compiling the lib. But the above es6 lines (maybe more?) are in all gsap folders (gsap, gsap/umd, gsap/src/minified and gsap/src/uncompressed). Did something go wrong? Or am I missing something here? Thanks in advance!