[Fiber] Fix findDOMNode and findAllInRenderedTree #8450
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This is failing in Fiber without the fix. Because we have no deletions to rely on in this case and the placement effects have already happened.
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Ok added tests. Done. |
This strategy finds the current fiber. It traverses back up to the root if the two trees are completely separate and determines which one is current. If the two trees converge anywhere along the way, we assume that is the current tree. We find the current child by searching the converged child set. This could fail if there's any way for both return pointers to point backwards to the work in progress. I don't think there is but I could be wrong. This may also fail on coroutines where we have reparenting situations.
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sophiebits
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Dec 3, 2016
| b = parentB; | ||
| invariant( | ||
| a.alternate === b, | ||
| 'Return fibers should always be each others\' alternates.' |
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other's (alternates of each other)
| 'Unable to find node on an unmounted component.' | ||
| ); | ||
| if (a.stateNode.current === a) { | ||
| // We've determined that A is the current branch. |
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I'm having trouble convincing myself why this is true.
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This strategy finds the current fiber. It traverses back up to the root if the two trees are completely separate and determines which one is current. If the two trees converge anywhere along the way, we assume that is the current tree. We find the current child by searching the converged child
set.
This could fail if there's any way for both return pointers to point backwards to the work in progress. I don't think there is but I could be wrong.
This may also fail on coroutines where we have reparenting situations.