Fix perf regression introduced in #3980 🙃 #4059
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tomekzaw
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Feb 16, 2023
fluiddot
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Jun 5, 2023
…ansion#4059) ## Summary This PR replaces implementation of shallowEqual – it turns out that the new one despite using Object.keys is 20x faster on hermes (haven't checked JSC). Apparently JIT makes it very hard to measure but the difference can be easily noticed when running examples with gestures e.g., snap and drag. ## Test plan Run snap & drag example on emulator on iOS – with the new implementation it does not stutter.
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Summary
This PR replaces implementation of shallowEqual – it turns out that the new one despite using Object.keys is 20x faster on hermes (haven't checked JSC). Apparently JIT makes it very hard to measure but the difference can be easily noticed when running examples with gestures e.g., snap and drag.
Test plan
Run snap & drag example on emulator on iOS – with the new implementation it does not stutter.