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## Summary
We see recent bug reports like #25755 and #25769 for devtools. Whenever
a component uses hook `useEffect`, it triggers an error.
This was introduced in #25663 when we try to keep the `ReactFiberFlags`
numbers consistent with reconciler, in order to fix an issue with server
components.
However, the values of `ReactFiberFlags` in reconciler were actually
changed a while ago in
b4204ede66
We made this mistake because, although it's not mentioned in the
comment, `DidCapture` and `Hydrating` are actually used by DevTools
This caused
- the latest (not stable) react version is broken on devtools before
4.27.0 (but only in uncommon cases such server components)
- all earlier react versions are broken on latest devtools (4.27.0)
To keep most versions work, we need to revert the commit that changed
the `ReactFiberFlags` values
## How did you test this change?
1. add a `useEffect` in a component in the TodoList of the shell,
trigger the error in devtools
2. after change, the error is gone
This directory contains code shared between several DevTools packages:
- /packages/react-devtools-core
- /packages/react-devtools-extensions
- /packages/react-devtools-inline
It is not published or released anywhere directly.