CODEWITHSUNDEEP
javascriptgoogle-chrome
Sergio Prado
Sergio Prado

Reputation: 1206

"ResizeObserver - loop limit exceeded" | API is never used

I am running a hybrid PhoneGap app (for a several years, running Cordova Android 6.1.2, more recently 9.0); for years, our #1 javascript error by a significant margin has been

ResizeObserver loop limit exceeded

However, the key distinction for my issue compared to the many other reports found on Google of this error is is that there are 0 instances of ResizeObserver being used anywhere in my code. Searching my entire computer, the only instance of ResizeObserver showing up anywhere is a random Steam file. Looking at my app while it's running, setting window.ResizeObserver = undefined doesn't break/do anything and document.resizeObservers (per the W3C documentation) returns nothing.

I have seen this post, which seems to be the canonical one for this error: ResizeObserver - loop limit exceeded . The answer of "This error means that ResizeObserver was not able to deliver all observations within a single animation frame. It is benign (your site will not break)." would be sufficient for me if I was actually using ResizeObserver. Since I am not using it, I am concerned that this error showing up is indicative of something larger going wrong.

There is no discernible pattern from our users' Chrome version/locale/time zone/Android version/etc/etc, unfortunately.

I've researched this API extensively and have found nothing that would indicate to my issue; either why there would be some sort of phantom ResizeObserver running and/or why that error would show up in an app that doesn't use that API.

Any help here (even just a vague direction to look at) would be very much appreciated. Thanks so much!

Upvotes: 4

Views: 16155

Answers (1)

Kaiido
Kaiido

Reputation: 136568

https://bugs.chromium.org/p/chromium/issues/detail?id=809574

Even the browser's Shadow DOM may be using this API, and cause this error to fire.
You can still safely ignore it.

Upvotes: 8

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