withOffset(value: Node, state: Node, offset: Node = 0): Node

Decorates animated value to save previous offset of pan

constructor(props) {
  const dragX = new Value(0);
  const panState = new Value(0);
  this.handlePan = event([
    {
      nativeEvent: {
        translationX: dragX,
        state: panState,
      },
    },
  ]);
  this.X = withOffset(dragX, panState);
}