react-use/src/useMedia.ts
2019-04-12 23:18:11 +10:00

29 lines
573 B
TypeScript

import { useEffect, useState } from 'react';
const useMedia = (query: string, defaultState: boolean = false) => {
const [state, setState] = useState(defaultState);
useEffect(() => {
let mounted = true;
const mql = window.matchMedia(query);
const onChange = () => {
if (!mounted) {
return;
}
setState(!!mql.matches);
};
mql.addListener(onChange);
setState(mql.matches);
return () => {
mounted = false;
mql.removeListener(onChange);
};
}, [query]);
return state;
};
export default useMedia;