ios keyboard bezier

keybez.md

  onKeyboardWillHide(e) {
    Animated.timing(this.state.height, {
      toValue: this.listViewMaxHeight,
      duration: e.duration,
      easing: Easing.bezier(0.1, 0.76, 0.55, 0.9)
    }).start();
  },

  onKeyboardWillShow(e) {
    Animated.timing(this.state.height, {
      toValue: this.listViewMaxHeight - (e.endCoordinates ? e.endCoordinates.height : e.end.height),
      duration: e.duration,
      easing: Easing.bezier(0.1, 0.76, 0.55, 0.9)
    }).start();
  },

Whats the duration?

Archive of the above link: https://web.archive.org/web/20170627051214/http://pyl.io/2015/08/17/animating-in-sync-with-ios-keyboard/