VirtualizedList onViewableItemsChanged won't trigger if first item in data evaluate to false #35280 (#35282)
Summary: VirtualizedList onViewableItemsChanged won't trigger if first item in data evaluate to false https://github.com/facebook/react-native/issues/35280 Described in https://github.com/facebook/react-native/issues/35280 ## Changelog - [General] [Fixed] Fix VirtualizedList onViewableItemsChanged won't trigger if first item in data evaluate to false Pull Request resolved: https://github.com/facebook/react-native/pull/35282 Test Plan: this snack will be able to log `onViewableItemsChanged triggered` after the fix: https://snack.expo.dev/tmQo_R_3Y Reviewed By: jacdebug Differential Revision: D41158485 Pulled By: NickGerleman fbshipit-source-id: 47434890155abe009c2560b658adc4e067c31027
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@ -1749,7 +1749,10 @@ export default class VirtualizedList extends StateSafePureComponent<
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'Tried to get frame for out of range index ' + index,
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);
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const item = getItem(data, index);
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const frame = item && this._frames[this._keyExtractor(item, index, props)];
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const frame =
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item != null
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? this._frames[this._keyExtractor(item, index, props)]
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: undefined;
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if (!frame || frame.index !== index) {
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if (getItemLayout) {
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/* $FlowFixMe[prop-missing] (>=0.63.0 site=react_native_fb) This comment
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