Optimize stream DOM insertions by eliminating Array.from allocations - #4424
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SteffenDE merged 1 commit intoSep 3, 2026
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Replaces repeated Array.from conversions with direct HTMLCollection indexing and parent.querySelector(':scope > :not(...)'), eliminating O(M * N) array allocations during stream element insertions. In benchmarks across collection sizes from 200 to 2,000 items, this achieves a 50x–1,400x speedup for indexed insertions and up to an 84x speedup when appending before non-stream children.
SteffenDE
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Sep 3, 2026
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