I would still say performance probably isn't as good as sphere

If there's already a performance gap here, it's only going to widen with miniSphere 5.0.  Chakra is blazing fast.  Which JavaScript engine is RPG Maker using, do you know?

Can't say which engine it uses but I believe it's ES5 compliant but also read it has ES6 features so there probably was an update that updated it to ES6.

Google tells me that RPG Maker is running on NodeWebkit version 0.12.3 (reference: http://endlessillusoft.com/rpgmaker-mv-es6-feature-list/ )

The NodwWebkit github's changelog tells me that this would be running on Node.js version 0.11.13 (https://github.com/nwjs/nw.js/blob/nw25/CHANGELOG.md )

The node.js website tells me that this would be v8  version 3.24.35.22 (https://nodejs.org/dist/v0.11.13/docs/changelog.html) which per V8 github is the 10th February 2014 version of v8 (https://github.com/v8/v8/blob/master/ChangeLog )

Performance wise that will be a dog compared to a current gen Javascript engine; there's been a LOT of performance related innovation in javascript engines in the last 2 years; also obviously that was early days for ES6 - before the spec was actually agreed... so it would have a few early features more there as an experiment/for testing than seriously implemented.

That said the list in the first article I linked is longer than I'd expect.

@Rhuan That first link is a 404.

@Rhuan That first link is a 404.

It had taken the bracket with it, fixed.