问题
I'm debugging a React Native 0.61.5 app with Chrome and usually when code stop running on a breakpoint and I hover a property, I can see all the details of it in a popup window. But for two days now I can't get back this functionality. I restarted computer, cleaned Chrome and Metro bundler, tried with virtual or real device but it's still not working. Did I deactivated something accidentally ?
回答1:
Yes, with Chrome 79 this functionality was broken. This is the thread where people are reporting this bug: https://support.google.com/chrome/thread/22882968?hl=en
(and also in the link from the comment to this question)
And this is a thread where Chrome developers are tracking this issue and trying to fix it: https://bugs.chromium.org/p/chromium/issues/detail?id=1033022
In Chrome Canary (81) this feature is working, and it's reportedly working in the Chrome Dev version (80)
Also there was this change: https://chromium-review.googlesource.com/c/chromium/src/%2B/1835357 which made variables appear on hover only inside the innermost scope. Update: this feature (to evaluate outside the innermost scope) will probably be restored: (from https://bugs.chromium.org/p/chromium/issues/detail?id=1033022)
"This undoes http://chromium-review.googlesource.com/c/chromium/src/+/1835357, which limited the eager popover evaluation to the innermost scope, which is the only scope for which we can produce reliable results right now. For the outer scopes, it might still produce the right results, but we can't guarantee that. But the feature is still very useful and so we are restoring the behavior here, and will follow up with a proper fix and UX later".
来源：https://stackoverflow.com/questions/59334180/bug-on-hover-in-chrome-debugger-v79-0-3945-79