ThemeUI 的 useThemeUI 不包含 useColorMode

Question

我正在嘗試在 Rebass 中使用主題，它建議使用主題 UI 進行主題化。 按照以下指南進行操作后，我無法讓setColorMode在我的故事書中工作。

1. 導入useColorMode

import React from 'react'
import { ColorMode, ThemeProvider, useColorMode } from 'theme-ui'
const ThemeWrapper = (props) => {
  const [colorMode, setColorMode] = useColorMode() // error
  //...
}

我收到此錯誤消息： [useColorMode] 需要 ThemeProvider 組件

2. 導入useThemeUI

import { ColorMode, ThemeProvider, useThemeUI } from 'theme-ui'
const ThemeWrapper = (props) => {
  const context = useThemeUI()
  const { setColorMode } = context
  //...
}

后來，我有setColorMode 不是一個函數

使用console.log檢查此context ，它包含以下內容：

{
  components: Object { p: {…}, b: {…}, i: {…}, … }
  emotionVersion: "10.0.27"
  theme: null
}

useColorMode無處可尋。

我究竟做錯了什么？

---

我目前的代碼：

.storybook/config.js

import React, { useEffect } from 'react'
import addons from '@storybook/addons';
import { addDecorator, configure } from '@storybook/react';
import { ColorMode, ThemeProvider, useThemeUI } from 'theme-ui'
import theme from '../theme'

const channel = addons.getChannel();

const ThemeWrapper = (props) => {
  const context = useThemeUI()
  const { setColorMode } = context

  console.log(context)

  const setDarkMode = isDark => setColorMode(isDark ? 'dark' : 'default')

  useEffect(() => {
    channel.on('DARK_MODE', setDarkMode);
    return () => channel.removeListener('DARK_MODE', setDarkMode);
  }, [channel, setColorMode]);

  return (
    <ThemeProvider theme={theme}>
      <ColorMode/>
      {props.children}
    </ThemeProvider>
  );
}

addDecorator(renderStory => <ThemeWrapper>{renderStory()}</ThemeWrapper>);

configure([
  require.context('../components', true, /\.stories\.(jsx?|mdx)$/),
  require.context('../stories', true, /\.stories\.(jsx?|mdx)$/)
], module);

Answer 1

我在這里問： https : //github.com/system-ui/theme-ui/issues/537 ，我設法糾正了有問題的代碼。

該錯誤是由於在<ThemeProvider>沒有調用函數useColorMode引起的。

我將我的配置文件更改為以下內容以緩解該問題。 它解決了我的問題。

import React, { useEffect } from 'react'
import addons from '@storybook/addons';
import { addDecorator, configure } from '@storybook/react';
import { ColorMode, ThemeProvider, useColorMode } from 'theme-ui'
import theme from '../theme'

const channel = addons.getChannel();

const ThemeChanger = () => {
  const [colorMode, setColorMode] = useColorMode();

  const setDarkMode = isDark => setColorMode(isDark ? 'dark' : 'default')

  useEffect(() => {
    channel.on('DARK_MODE', setDarkMode);
    return () => channel.removeListener('DARK_MODE', setDarkMode);
  }, [channel, setColorMode]);

  return <div/>
}

const ThemeWrapper = ({ children }) => {
  return (
    <ThemeProvider theme={theme}>
      <ThemeChanger/>
      <ColorMode/>
      {children}
    </ThemeProvider>
  );
}

addDecorator(renderStory => <ThemeWrapper>{renderStory()}</ThemeWrapper>);

configure([
  require.context('../components', true, /\.stories\.(jsx?|mdx)$/),
  require.context('../stories', true, /\.stories\.(jsx?|mdx)$/)
], module);