Function update

web/hooks/useViewportHeight.ts:25–34

()

    const vv = window.visualViewport;

    const update = () => {
      const fullHeight = window.innerHeight;
      const visibleHeight = vv ? vv.height : fullHeight;
      const keyboardHeight = Math.max(0, fullHeight - visibleHeight);
      setState({
        viewportHeight: visibleHeight,
        keyboardHeight,
        isKeyboardOpen: keyboardHeight > 50,
      });
    };

    update();