小编ano*_*ous的帖子

我正在开发 React 应用程序并使用 Material-ui v5，但我陷入了这个错误 theme.spacing 不起作用。

import { makeStyles } from "@material-ui/styles";
import React from "react";
import Drawer from "@mui/material/Drawer";
import Typography from "@mui/material/Typography";
import List from "@mui/material/List";
import ListItem from "@mui/material/ListItem";
import ListItemIcon from "@mui/material/ListItemIcon";
import ListItemText from "@mui/material/ListItemText";
import { AddCircleOutlineOutlined, SubjectOutlined } from "@mui/icons-material";
import { useHistory, useLocation } from "react-router";

const drawerWidth = 240;

const useStyles = makeStyles((theme) => {
  return {
    page: {
      background: "#f9f9f9",
      width: "100%",
      padding: theme.spacing(3),
    },
    drawer: {
      width: drawerWidth, …