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useMountedState always returns false

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还没有人认领这个 Issue。

评估

难度
2/5
预计耗时
1-3 小时
新手友好度
25/100
Issue 类型
缺陷
描述清晰度
需要澄清
活跃度
停滞
技术栈
react, typescript
领域
frontend

调研方向

Start with the useMountedState entry point and run the supplied ThemeToggler example. Confirm whether the hook remains false after mounting, then collect the missing React and react-use versions and create a minimal reproduction. Done means the reported behavior and expected mounted-state result are clear enough for maintainers to investigate.

由索引模型根据 Issue 内容生成。

描述

What is the current behavior?
this always returns false, im doing something wrong ?

'use client';
import React from 'react';
import { useTheme } from 'next-themes';
import { Moon, Sun } from 'lucide-react';
import { Button } from './ui/button';
import { useMountedState } from 'react-use';

export const ThemeToggler = () => {
  const { setTheme, theme } = useTheme();
  const isMounted = useMountedState();

  const isDark = theme === 'dark';

  const Icon = isDark ? Moon : Sun;

  const toggleTheme = () => {
    setTheme(isDark ? 'light' : 'dark');
  };

  // isMounted() is always false here
  if (!isMounted()) return null;

  return (
    <Button size={'icon'} variant={'ghost'} onClick={toggleTheme}>
      <Icon size={24} />
    </Button>
  );
};

Steps to reproduce it and if possible a minimal demo of the problem. Your bug will get fixed much faster if we can run your code and it doesn't have extra dependencies other than react-use. Paste the link to your JSFiddle or CodeSandbox example below:

What is the expected behavior?

A little about versions:

  • OS:
  • Browser (vendor and version):
  • React:
  • react-use:
  • Did this worked in the previous package version?
主要语言
TypeScript
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30 天内没有已合并 PR

环境准备

从这里开始

  1. 先读完整个 Issue，再读项目的贡献指南。
  2. 在 Issue 下留言说明你要接手 —— 这能避免两个人做同样的事。
  3. Fork 仓库，在一个分支上完成修改。
  4. 提交 Pull Request，并在描述里引用这个 Issue 编号。

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