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web2019/static/js/shop/options/useClickAway.js

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JavaScript
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import React from "react";
// copy from "@uidotdev/usehooks"
export function useClickAway(cb) {
const ref = React.useRef(null);
const refCb = React.useRef(cb);
React.useLayoutEffect(() => {
refCb.current = cb;
});
React.useEffect(() => {
const handler = (e) => {
const element = ref.current;
if (element && !element.contains(e.target)) {
refCb.current(e);
}
};
document.addEventListener("mousedown", handler);
document.addEventListener("touchstart", handler);
return () => {
document.removeEventListener("mousedown", handler);
document.removeEventListener("touchstart", handler);
};
}, []);
return ref;
}