import React from 'react'; import { makeStyles, Theme, createStyles } from '@material-ui/core/styles'; import CircularProgress from '@material-ui/core/CircularProgress'; const useStyles = makeStyles((theme: Theme) => createStyles({ root: { display: 'flex', '& > * + *': { marginLeft: theme.spacing(2), }, }, }), ); export default function CircularDeterminate() { const classes = useStyles(); const [progress, setProgress] = React.useState(0); React.useEffect(() => { const timer = setInterval(() => { setProgress((prevProgress) => (prevProgress >= 100 ? 0 : prevProgress + 10)); }, 800); return () => { clearInterval(timer); }; }, []); return (