We have a fairly large-ish JS codebase at work and from what I saw so far is that Edge&#x27;s <i>JS</i> was never a problem. SVG rendering on the other hand is horribly broken currently for some cases.<p>That being said, since our JS is generated, it&#x27;s purely ES5 since it still has to run on IE9. So maybe the weird cases are in the more modern JS parts we don&#x27;t use.