SearchBarAnimation.js

_setStateBar(state) {
  let toValue = state == 'full' ? this.maxActionAnimated : 0;
  Animated.timing(this.actionAnimated, {
    toValue: toValue,
    duration: 250,
    useNativeDriver: true,
  }).start();
}

minimizeBar = () => {
  if(Math.round(this.scrollY._value) == 0) { // Full
    this.scrollToOffset(this.topPartHeight);
  } else { // Clamped
    this._setStateBar('normal');
  }
};

expandBar = () => {
  if(this.stateBarTypes.EXPANDED == this.stateBar) {
    return;
  }

  if(Math.round(this.scrollY._value) == this.topPartHeight) { // Full
    this.scrollToOffset(0);
  } else { // Clamped
    this._setStateBar('full');
  }
};