JAVASCRIPT use-sync-external-store-with-selector.development.js

/**
 * @license React
 * use-sync-external-store-with-selector.development.js
 *
 * Copyright (c) Meta Platforms, Inc. and affiliates.
 *
 * This source code is licensed under the MIT license found in the
 * LICENSE file in the root directory of this source tree.
 */

"use strict";
"production" !== process.env.NODE_ENV &&
  (function () {
    function is(x, y) {
      return (x === y && (0 !== x || 1 / x === 1 / y)) || (x !== x && y !== y);
    }
    "undefined" !== typeof __REACT_DEVTOOLS_GLOBAL_HOOK__ &&
      "function" ===
        typeof __REACT_DEVTOOLS_GLOBAL_HOOK__.registerInternalModuleStart &&
      __REACT_DEVTOOLS_GLOBAL_HOOK__.registerInternalModuleStart(Error());
    var React = require("react"),
      objectIs = "function" === typeof Object.is ? Object.is : is,
      useSyncExternalStore = React.useSyncExternalStore,
      useRef = React.useRef,
      useEffect = React.useEffect,
      useMemo = React.useMemo,
      useDebugValue = React.useDebugValue;
    exports.useSyncExternalStoreWithSelector = function (
      subscribe,
      getSnapshot,
      getServerSnapshot,
      selector,
      isEqual
    ) {
      var instRef = useRef(null);
      if (null === instRef.current) {
        var inst = { hasValue: !1, value: null };
        instRef.current = inst;
      } else inst = instRef.current;
      instRef = useMemo(
        function () {
          function memoizedSelector(nextSnapshot) {
            if (!hasMemo) {
              hasMemo = !0;
              memoizedSnapshot = nextSnapshot;
              nextSnapshot = selector(nextSnapshot);
              if (void 0 !== isEqual && inst.hasValue) {
                var currentSelection = inst.value;
                if (isEqual(currentSelection, nextSnapshot))
                  return (memoizedSelection = currentSelection);
              }
              return (memoizedSelection = nextSnapshot);
            }
            currentSelection = memoizedSelection;
            if (objectIs(memoizedSnapshot, nextSnapshot))
              return currentSelection;
            var nextSelection = selector(nextSnapshot);
            if (void 0 !== isEqual && isEqual(currentSelection, nextSelection))
              return (memoizedSnapshot = nextSnapshot), currentSelection;
            memoizedSnapshot = nextSnapshot;
            return (memoizedSelection = nextSelection);
          }
          var hasMemo = !1,
            memoizedSnapshot,
            memoizedSelection,
            maybeGetServerSnapshot =
              void 0 === getServerSnapshot ? null : getServerSnapshot;
          return [
            function () {
              return memoizedSelector(getSnapshot());
            },
            null === maybeGetServerSnapshot
              ? void 0
              : function () {
                  return memoizedSelector(maybeGetServerSnapshot());
                }
          ];
        },
        [getSnapshot, getServerSnapshot, selector, isEqual]
      );
      var value = useSyncExternalStore(subscribe, instRef[0], instRef[1]);
      useEffect(
        function () {
          inst.hasValue = !0;
          inst.value = value;
        },
        [value]
      );
      useDebugValue(value);
      return value;
    };
    "undefined" !== typeof __REACT_DEVTOOLS_GLOBAL_HOOK__ &&
      "function" ===
        typeof __REACT_DEVTOOLS_GLOBAL_HOOK__.registerInternalModuleStop &&
      __REACT_DEVTOOLS_GLOBAL_HOOK__.registerInternalModuleStop(Error());
  })();