Keep reference equality when possible in update() #5022
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For $set and $apply it is cheap and easy to check whether the new value will be identical (===) to the old value and create a new object only when this is not the case. This will reduce excessive renders when using the pureRenderMixin. The same should be possible for for merge, but is more complicated so is not attempted here.
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No, we'll land it on master if we take it (and it will be after 0.14, whose release is imminent). |
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Same as #4968 but targeting 0.13-stable in case that is a better place for it.
For $set and $apply it is cheap and easy to check whether the new value will
be identical (===) to the old value and create a new object only when this is not
the case. This will reduce excessive renders when using the pureRenderMixin.
The same should be possible for for merge, but is more complicated so is not
attempted here.
Addresses #1923