Related to BotanyPots/adding sapling stop working after KubeJS 1604.3.1.84 about kubejs HOT 3 CLOSED

Not that I didn't look at Graal before switching. I spent a lot of time with both engines. Graal had more problems with KubeJS specifically than Rhino. If I was gonna break all scripts and design a new syntax, then sure, Graal would be the better option, but Rhino adds many good ES6 features (arrow functions, working array functions, regex, for..in, for..of etc) and only breaks couple scripts while being 10x smaller. You have to think about pack updates too. And Rhino being way smaller its also easier to work with in my own fork. I added template strings recently for example. So that's my official reason for using Rhino over Graal

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The latest Rhino plugin is using Rhino 1.7.13, which is pretty much the bleeding edge on that project, but even the latest Rhino is pretty poor on ES2015 support.

FWIW, GraalVM's doing great with full ES2020 support.

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Thanks for the fix !

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