## Issue
6068 Fix "Cumulative Layout Shift" for Core Web Vitals
In Posts, the Comments section appears first while we fetch the MD file. When the MD is fetched, Comments get pushed to the bottom (or shifted up for short posts), hence the red CLS scores.
## Approach
There are too many layers between `<FilePage>` and `<DocumentViewer>` to pass the `loading` state around to hide the Comments section, so just make Comments fade in after a 2s delay.
## Changes
- Posts: Add 2s fade-in delay to Comments.
- Posts: remove the gray placeholder. This improves the score a bit more, and reduces flicker as well. There's already a spinner from `FileRenderInline` to tell the user to be patient.
- Posts: add a minimum 30vh height so that short posts don't get collapsed too much, causing the `FileDetails` and Comments to shift. Small shifts are fine as long as CLS is below 0.1.
1. Lock the width of the second pane so that the layout doesn't shift after the image is fetched.
2. The image is huge, so pass through the optimizer.
- Wait until the container is mounted to get the exact image width.
Unfortunately, it still takes 0.8s on average to fetch the image, regardless of how small the image has been optimized.
Login graphic improvements
1. Lock the width of the second pane so that the layout doesn't shift after the image is fetched.
2. The image is huge, so pass through the optimizer.
- Wait until the container is mounted to get the exact image width.
Unfortunately, it still takes 1s (on average) to fetch the image, regardless of how small the image has been optimized.
The only downside to this new implementation is that the top-most (or right-most?) scrollbar won't get the customization. Any other sub-components (e.g. sidebar) will get the customization.
My guess is that the "top-most" scrollbar is above the `main-wrapper`. I'm not sure if we can (or should) add another className higher than App.
The impetus for the customization was the ugly sidebar anyway, so at least we covered that.
* am I done?
* post diff
* unused selector cleanup
* missed commit
* mess with button styles
* fix flow
Co-authored-by: Jeremy Kauffman <jeremy@lbry.io>
Co-authored-by: Sean Yesmunt <sean@lbry.io>
With this change, the default size of content in the new text format
is increased a bit, but the content will also increase in size to try
and fit all its lines properly. This is especially useful with stuff
like guitar tab which looks terrible if it's wrapped
