Does it supports dev-extension building?

[ShinaZin]

I mean using React.js on devtools.html page

[lxieyang]

I'm not exactly sure what you meant?

[GeekaholicLin]

I'm not exactly sure what you meant?

Developers can also extend devtools like vue-devtools by using Chrome extension API.
https://developer.chrome.com/docs/extensions/mv3/devtools/

[lxieyang]

Good to know!

In this case, no, but a good idea for future development!

[peterhartree]

If you include devtools_page in your extension manifest, the extension will show the following permissions warning on install:

• Read and change all your data on all websites

I wasted quite some time trying to figure out why I was getting this warning—it's not obvious that the devtools_page thing would trigger it.

I've opened a PR suggesting we add a comment about this: #124.