"use strict";

Object.defineProperty(exports, "__esModule", {
  value: true
});
exports.useForkRef = useForkRef;
var React = _interopRequireWildcard(require("react"));
function _getRequireWildcardCache(e) { if ("function" != typeof WeakMap) return null; var r = new WeakMap(), t = new WeakMap(); return (_getRequireWildcardCache = function (e) { return e ? t : r; })(e); }
function _interopRequireWildcard(e, r) { if (!r && e && e.__esModule) return e; if (null === e || "object" != typeof e && "function" != typeof e) return { default: e }; var t = _getRequireWildcardCache(r); if (t && t.has(e)) return t.get(e); var n = { __proto__: null }, a = Object.defineProperty && Object.getOwnPropertyDescriptor; for (var u in e) if ("default" !== u && {}.hasOwnProperty.call(e, u)) { var i = a ? Object.getOwnPropertyDescriptor(e, u) : null; i && (i.get || i.set) ? Object.defineProperty(n, u, i) : n[u] = e[u]; } return n.default = e, t && t.set(e, n), n; }
/**
 * Merges refs into a single memoized callback ref or `null`.
 */
function useForkRef(...refs) {
  const cleanupRef = React.useRef(undefined);
  const refEffect = React.useCallback(instance => {
    const cleanups = refs.map(ref => {
      if (ref == null) {
        return null;
      }
      if (typeof ref === 'function') {
        const refCallback = ref;
        const refCleanup = refCallback(instance);
        return typeof refCleanup === 'function' ? refCleanup : () => {
          refCallback(null);
        };
      }
      ref.current = instance;
      return () => {
        ref.current = null;
      };
    });
    return () => {
      cleanups.forEach(refCleanup => refCleanup?.());
    };
    // eslint-disable-next-line react-hooks/exhaustive-deps
  }, refs);
  return React.useMemo(() => {
    if (refs.every(ref => ref == null)) {
      return null;
    }
    return value => {
      if (cleanupRef.current) {
        cleanupRef.current();
        cleanupRef.current = undefined;
      }
      if (value != null) {
        cleanupRef.current = refEffect(value);
      }
    };
    // eslint-disable-next-line react-hooks/exhaustive-deps
  }, refs);
}