[PS-22912] fix crash from upgrading to react native 61.5 #5
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erenn16
reviewed
Jun 18, 2020
| contentOffsetMap.putDouble("x", PixelUtil.toDIPFromPixel(contentOffset.x)); | ||
| contentOffsetMap.putDouble("y", PixelUtil.toDIPFromPixel(contentOffset.y)); | ||
| event.putMap("contentOffset", contentOffsetMap); | ||
| event.putMap("contentOffset", (ReadableMap)contentOffsetMap); |
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Is this a safe cast? Won't throw an error on its own at some point?
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Yes, it should be a safe cast since WritableMap extends from ReadableMap so any function it calls from ReadableMap should also be implemented by contentOffsetMap. I'm not sure why it doesn't accept the WritableMap in the first place.
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React Native 61+ changed the type in putMap to accept a ReadableMap instead of a WritableMap. Casting the argument to WritableMap to fix the crash.