fix: resolves react snapshot undefined warning#2903
Merged
rborn merged 1 commit intoreact-native-maps:masterfrom Jun 13, 2019
Merged
fix: resolves react snapshot undefined warning#2903rborn merged 1 commit intoreact-native-maps:masterfrom
rborn merged 1 commit intoreact-native-maps:masterfrom
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Does any other open PR do the same thing?
No
What issue is this PR fixing?
Resolves React warning being displayed when the
regionprop inMapViewisundefined. React requires a snapshot value (or null) to be provided (see warning message below). This PR modifiesgetSnapshotBeforeUpdateinMapViewto returnnullifprops.regionisundefined.How did you test this PR?
Change is JS only and only affects library's interaction with React. However, the change was also tested on Android (on device) and iOS (device and simulator) to confirm warning is no longer triggered.
Steps to recreate and test for change:
MapViewwithoutregionprop defined, e.g.:Run react native app and observe React warning in debug mode.
Now test with changes in this PR, warning should disappear.