[snickerdoodle14]

Firefox Console > Memory > Enable record call stacks, reload the page, take a snapshot, wait until you notice memory grows, take another snapshot. Then compare the two: https://firefox-source-docs.mozilla.org/devtools-user/memory.... You can also try a performance recording.

But you probably won't be able to make much sense of the results without a lot of effort because of all the minimization/obfuscation.