While developing with create-react-app, my browser enters debugger mode on warnings:
It breaks on the source code of react-dev-tools:
// --- Welcome to debugging with React DevTools --- // This debugger statement means that you've enabled the "break on warnings" feature. // Use the browser's Call Stack panel to step out of this override function- // to where the original warning or error was logged.
How can I deactivate this behavior?
It's a known issue. A workaround is posted on GitHub: Bug: Unexpected debugger statement in DevTools (solved) #19308
Based on pull request DevTools: Make break-on-warn off by default #19309 it seems it's a bug.
The Break On Warnings box was unchecked for me and it still would break. Removing and readding the extension to force an update fixed it for me.
I don't know of another way to force Chrome to update an extension outside of its regular schedule.
Go to Chrome Devtools → in the Chrome console, go to Component → Click on Settings → unset Break on Warning. Do the same in Profiler → Settings → unset Break on warning.
@cadoman pointed check and then uncheck to make work for sure.
The issue is due to a recent release. A Workaround proposed by the React team is:
Make sure at last the Break on Warnings checkbox is unchecked.
Reference: Issue link
Chrome has a "BlackBox script" feature which is useful in this case.