Deprecated typography warning when using custom theme in Material-UI
问题 In the following code code, I am using a custom theme in Material-UI: import React from "react"; import ReactDOM from "react-dom"; import { MuiThemeProvider, createMuiTheme } from "@material-ui/core/styles"; import Button from "@material-ui/core/Button"; import { purple, green } from "@material-ui/core/colors"; const theme = createMuiTheme({ palette: { primary: purple, secondary: green } }); function App() { return ( <MuiThemeProvider theme={theme}> <Button color="primary">Button1</Button>