refactor: use slotchange event instead of MutationObserver when possible
#9316
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slotchange event instead of MutationObserver when possible
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This PR has been automatically marked as stale because it has not had recent activity. Please close your PR if it is no longer relevant. Thank you for your contributions. |
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This PR has been automatically marked as stale because it has not had recent activity. Please close your PR if it is no longer relevant. Thank you for your contributions. |
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Closing. Will revisit if needed after #10310. |
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Replaces
MutationObserver+childList: trueusage withslotchangeevent for simplification and performance reasons (slots already leverage mutation observer). Another benefit is that usingslotchangeeliminates conditions where callbacks may be invoked before the element has rendered.