fix(useDocumentVisibility): default visibility to true for SSR

[turkyden]

Default document visibility to true for SSR. #854

import { useState } from 'react';
import useEventListener from '../useEventListener';

type VisibilityState = 'hidden' | 'visible' | 'prerender' | undefined;

const getVisibility = () => {
- if (typeof document === 'undefined') return;
+ if (typeof document === 'undefined') return true;
+ // Default document visibility to true for SSR
  return document.visibilityState;
};

function useDocumentVisibility(): VisibilityState {
  const [documentVisibility, setDocumentVisibility] = useState(() => getVisibility());

  useEventListener(
    'visibilitychange',
    () => {
      setDocumentVisibility(getVisibility());
    },
    {
      target: document,
    },
  );

  return documentVisibility;
}

export default useDocumentVisibility;

[brickspert]

感觉并没有解决那个 issue 的问题，那个报错是 document is not defined，也就是使用了没有定义的变量。

感觉这样并没有解决吧。