Performance

Performance

Tips:

• Prefer signals at the edges; derive with computed to minimize re-renders
• Use key on lists to help the diffing algorithm
• Batch updates with batch()

Keyed lists allow the reconciler to reorder elements in-place with minimal DOM operations. Prefer stable keys (IDs) over indices.

Micro-benchmarking

• A small test is included that measures reversing a list of 200 keyed items; it should complete well under a second in the stubbed test environment. Use it as a smoke check to catch regressions in the keyed children algorithm.