'alpha' 不是从 '@mui/system' 导出的

Question

请我从@mui/material library 得到这个错误，我检查了 mui/system 的 package.json 并且它已经导出了 alpha。

./node_modules/@mui/material/styles/index.js
 Attempted import error: 'alpha' is not exported from '@mui/system'.

这是应用程序的package.json

"dependencies": {
    "@date-io/date-fns": "1.x",
    "@emotion/react": "11.7.0",
    "@emotion/styled": "11.6.0",
    "@material-ui/core": "4.12.3",
    "@material-ui/icons": "4.11.2",
    "@mui/icons-material": "5.2.0",
    "@mui/material": "^5.2.7",
    "@mui/styled-engine-sc": "5.1.0",
    "@mui/styles": "5.2.2",
    "@mui/system": "^5.2.6",
    "@reduxjs/toolkit": "1.6.2",
    "@testing-library/jest-dom": "5.11.4",
    "@testing-library/react": "11.1.0",
    "@testing-library/user-event": "12.1.10",
    "date-fns": "2.27.0",
    "express": "4.17.1",
    "react": "17.0.2",
    "react-bootstrap": "2.0.2",
    "react-bootstrap-icons": "1.6.1",
    "react-circular-gradient-progress": "1.1.1",
    "react-circular-progressbar": "2.0.4",
    "react-dom": "17.0.2",
    "react-icons": "4.3.1",
    "react-organizational-chart": "2.1.0",
    "react-redux": "7.2.6",
    "react-router-dom": "5.2.0",
    "react-scripts": "4.0.3",
    "react-spring": "9.3.1",
    "styled-components": "5.3.3",
    "web-vitals": "1.0.1"
  },

我的节点版本是v12.22.8

Answer 1

我认为问题在于您混合了 Material UI 版本 4 和 5 库，并且它们彼此不兼容。 尝试将 @material-ui/core 替换为 @mui/core 并删除 @material-ui/icons 导入，因为您已经拥有 @mui/icons-material 并使用所有 @mui/* 导入的最新版本。