let listViewRef: SwipeListView<MyType> | null = null;

<SwipeListView
  ...
  listViewRef={(ref) => {
    // type of ref is SwipeListView as defined here https://github.com/jemise111/react-native-swipe-list-view/blob/master/types/index.d.ts#L395
    listViewRef = ref;
  }}
/>

...

// This works fine at runtime. Typescript is showing an error that scrollToOffset does not exist 
listViewRef?.scrollToOffset({
  x: 0,
  y: 0,
  animated: true,
});