mirror of
https://github.com/zebrajr/react.git
synced 2026-01-15 12:15:22 +00:00
## Summary In React Native, public instances and internal host nodes are not represented by the same object (ReactNativeElement & shadow nodes vs. just DOM elements), and the only one that's required for rendering is the shadow node. Public instances are generally only necessary when accessed via refs or events, and that usually happens for a small amount of components in the tree. This implements an optimization to create the public instance on demand, instead of eagerly creating it when creating the host node. We expect this to improve performance by reducing the logic we do per node and the number of object allocations. ## How did you test this change? Manually synced the changes to React Native and run Fantom tests and benchmarks, with the flag enabled and disabled. All tests pass in both cases, and benchmarks show a slight but consistent performance improvement.