[Bug]: Error: Map.groupBy is not a function

[luiskugel]

Pre-Submission Checklist

• [X] I have checked the existing/closed issues to ensure this issue has not already been reported.
• [X] I am using the latest supported version of the browser.
• [X] I have tried disabling all browser extensions/add-ons to rule out interference from these.
• [X] I have tried clearing the browser cache and cookies.
• [X] I have tried to create a new profile and the issue still occurs.
• [X] I have provided detailed step-by-step instructions on how to reproduce the issue.
• [X] I have included relevant screenshots or console outputs.
• [X] I have checked this problem is not ocurring in the latest version of Firefox ESR.
• [X] This issue is specific to this browser and does not occur in other browsers.

Bug Summary

When using the page npmgraph i got the error Map.groupBy is not supported and it looks like the function does not exist in floorp. I tried in firefox and chrome and both browsers work.

Reproduction Steps

1. Open this URL: https://interactive-examples.mdn.mozilla.net/pages/js/map-groupby.html
2. Click Run

Expected Behavior

The function to be existent and working

Actual Behavior

The function seems to be missing/disabled

Screenshots

I don't think this is necessary. You should be easily able to reproduce the issue via the url.

Browser Version

11.13.3 (64-Bit)

Operating System

Windows 11

Additional Context

No response

[regularentropy]

ESR issue. Please wait untill the next release.

[CutterKnife]

https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Map/groupBy

According to this site, this feature was implemented in Firefox 119; the current version of Firefox ESR is 115, so I don't think the feature exists.