Enable opt-in to async mode - #10535
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When the feature flag enableAsyncSubtreeAPI is true, React.unstable_AsyncComponent creates an async subtree. When it's false, it behaves like a normal, sync React component. We use this flag in www as a fail safe so that if we ship an async bug, we can set the flag to false and revert back to sync mode. For open source, we should enable the feature flag.
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When the feature flag enableAsyncSubtreeAPI is true, React.unstable_AsyncComponent creates an async subtree. When it's false, it behaves like a normal, sync React component. We use this flag in www as a fail safe so that if we ship an async bug, we can set the flag to false and revert back to sync mode. For open source, we should enable the feature flag.
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When the feature flag
enableAsyncSubtreeAPIis true,React.unstable_AsyncComponentcreates an async subtree. When it's false, it behaves like a normal, sync React component. We use this flag at Facebook as a fail-safe so if we ship an async bug, we can set the flag to false and revert back to sync mode.For open source, we should enable the feature flag, so people can start experimenting with async before it's stable.