bramus / bramus/scroll-driven-animations-debugger-extension

Cannot read properties of undefined (reading 'end')

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bug P1
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Description

I just got the error below when running [this repository](https://github.com/frontendfyi/css-scroll-driven-animations/tree/main) and inspecting the H2 "Can you make the font bigger?". I'm not sure what's causing this, but I thought it would make sense to report this.

Perhaps it's related to the classnames you try to show, which in this case include a backslash.

![CleanShot 2023-09-12 at 16 17 36@2x](https://github.com/bramus/scroll-driven-animations-debugger-extension/assets/2969573/e7234007-aef7-4984-8d0d-f70ba7db21e8)

![CleanShot 2023-09-12 at 16 21 17@2x](https://github.com/bramus/scroll-driven-animations-debugger-extension/assets/2969573/c76fa22a-b894-4217-a47e-35d37f2d800a)

Contributor guide

No contributing guide indexed for this repository

Research direction

Start by reproducing the error while inspecting the H2 “Can you make the font bigger?” in the linked frontendfyi/css-scroll-driven-animations repository. Inspect how class names containing a backslash are handled and trace the undefined value behind the “end” read; done means the inspection no longer throws this error for that example.

Written by the indexing model from the issue text.

Assessment

Domain
devtools
Issue type
Bug
Difficulty
3/5
Estimated time
1-2 days
Activity status
Stale
Clarity
Needs clarification
Newbie friendliness
25/100

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