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1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 | import React, { useEffect, useRef, useState } from "react"; import { useLocation } from "react-router"; import qs from "qs"; export function usePrevious<T>(value: T) { const ref = useRef<T>(); useEffect(() => { ref.current = value; }); return ref.current; } export function useQueryParams<QueryParamsType>(): QueryParamsType { return (qs.parse(useLocation().search, { ignoreQueryPrefix: true }) as unknown) as QueryParamsType; } export function useAnchor(): [ null | HTMLElement, (event: React.MouseEvent<HTMLElement>) => void, () => void ] { const [anchorEl, setAnchorEl] = useState<null | HTMLElement>(null); const handleClick = (event: React.MouseEvent<HTMLElement>) => { setAnchorEl(event.currentTarget); }; const handleClose = () => { setAnchorEl(null); }; return [anchorEl, handleClick, handleClose]; } |