Opening devtools from the extension

[Moran Fine]

Does anyone know how can I open the Chrome devtools from the extension? Is it possible maybe with CDP?

[wOxxOm]

No, it's not possible (intentionally), https://crbug.com/445240

[wOxxOm]

You can probably use chrome.developerPrivate.openDevTools in a local unpacked extension if you start chrome with a command line switch --whitelisted-extension-id=ID or --allowlisted-extension-id=ID. Check the source of devtools frontend to see how this method is called.

[Cuyler Stuwe]

I tried this out of curiosity in Canary (115), and while I did get some other private APIs surfaced, chrome.developerPrivate was still undefined.

[Moran Fine]

Thanks a lot for the replies!

So let's say I'm asking the user to open the Chrome devtools, is there a way that I can check that the Chrome devtools is now open?

[wOxxOm]

See https://stackoverflow.com/questions/7798748/find-out-whether-chrome-console-is-open

[Moran Fine]

Thanks. I need to check if the Chrome devtools is open on the web page from an extension, and it didn't work for me with this solution. Is there a way to check it from an extension?

[Deco]

Yes you can use  chrome.devtools.inspectedWindow.eval("!!(window.devtools)" to explicitly check if the extension is open, e.g:
chrome.devtools.inspectedWindow.eval("!!(window.devtools)", function(result, isException) { if (!isException && result) { console.log("DevTools are open"); } else { console.log("DevTools are closed"); } });

The thread isn't exactly clear why you want this utility, but based on an assumption for your use case take explicit note of the use of getResources within the documentation. 

Thanks,
Deco

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[Deco]

Typo error: " check if the extension is open" to " "check if the devtools panel is open from an extension programmatically". 

Thanks,

Deco