fix(core): skip leave animations on view swaps#64828
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atscott merged 1 commit intoangular:mainfrom Nov 5, 2025
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AndrewKushnir
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We accounted for skipping leave animations during moves, but not swaps. This accounts for the swap cases and updates how we deal with swaps and moves. Now we always queue animations and then essentially dequeue them if we attach them back in the same render pass. fixes: angular#64818 fixes: angular#64730
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We accounted for skipping leave animations during moves, but not swaps. This PR accounts for the basic swap case, but turns out list reconciliation by design does not identify every swap case. So we cannot just rely on the basic swap functions. So rather than relying on a skip flag, like we had been, this adds the ability to dequeue an animation after it's been queued.
Now, if we attach a node after a detach within the same render cycle, we can remove the leave animation from the animation queue before it would fire. This ensures swaps and moves are safely handled without unexpectedly removing the nodes.
fixes: #64818
fixes: #64730