use-sync-external-store

Index: package/cjs/use-sync-external-store-shim.development.js
===================================================================
--- package/cjs/use-sync-external-store-shim.development.js
+++ package/cjs/use-sync-external-store-shim.development.js
@@ -1,239 +1,95 @@
 /**
  * @license React
  * use-sync-external-store-shim.development.js
  *
- * Copyright (c) Facebook, Inc. and its affiliates.
+ * 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';
-
-if (process.env.NODE_ENV !== "production") {
-  (function() {
-
-          'use strict';
-
-/* global __REACT_DEVTOOLS_GLOBAL_HOOK__ */
-if (
-  typeof __REACT_DEVTOOLS_GLOBAL_HOOK__ !== 'undefined' &&
-  typeof __REACT_DEVTOOLS_GLOBAL_HOOK__.registerInternalModuleStart ===
-    'function'
-) {
-  __REACT_DEVTOOLS_GLOBAL_HOOK__.registerInternalModuleStart(new Error());
-}
-          var React = require('react');
-
-var ReactSharedInternals = React.__SECRET_INTERNALS_DO_NOT_USE_OR_YOU_WILL_BE_FIRED;
-
-function error(format) {
-  {
-    {
-      for (var _len2 = arguments.length, args = new Array(_len2 > 1 ? _len2 - 1 : 0), _key2 = 1; _key2 < _len2; _key2++) {
-        args[_key2 - 1] = arguments[_key2];
-      }
-
-      printWarning('error', format, args);
+"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);
     }
-  }
-}
-
-function printWarning(level, format, args) {
-  // When changing this logic, you might want to also
-  // update consoleWithStackDev.www.js as well.
-  {
-    var ReactDebugCurrentFrame = ReactSharedInternals.ReactDebugCurrentFrame;
-    var stack = ReactDebugCurrentFrame.getStackAddendum();
-
-    if (stack !== '') {
-      format += '%s';
-      args = args.concat([stack]);
-    } // eslint-disable-next-line react-internal/safe-string-coercion
-
-
-    var argsWithFormat = args.map(function (item) {
-      return String(item);
-    }); // Careful: RN currently depends on this prefix
-
-    argsWithFormat.unshift('Warning: ' + format); // We intentionally don't use spread (or .apply) directly because it
-    // breaks IE9: https://github.com/facebook/react/issues/13610
-    // eslint-disable-next-line react-internal/no-production-logging
-
-    Function.prototype.apply.call(console[level], console, argsWithFormat);
-  }
-}
-
-/**
- * inlined Object.is polyfill to avoid requiring consumers ship their own
- * https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Object/is
- */
-function is(x, y) {
-  return x === y && (x !== 0 || 1 / x === 1 / y) || x !== x && y !== y // eslint-disable-line no-self-compare
-  ;
-}
-
-var objectIs = typeof Object.is === 'function' ? Object.is : is;
-
-// dispatch for CommonJS interop named imports.
-
-var useState = React.useState,
-    useEffect = React.useEffect,
-    useLayoutEffect = React.useLayoutEffect,
-    useDebugValue = React.useDebugValue;
-var didWarnOld18Alpha = false;
-var didWarnUncachedGetSnapshot = false; // Disclaimer: This shim breaks many of the rules of React, and only works
-// because of a very particular set of implementation details and assumptions
-// -- change any one of them and it will break. The most important assumption
-// is that updates are always synchronous, because concurrent rendering is
-// only available in versions of React that also have a built-in
-// useSyncExternalStore API. And we only use this shim when the built-in API
-// does not exist.
-//
-// Do not assume that the clever hacks used by this hook also work in general.
-// The point of this shim is to replace the need for hacks by other libraries.
-
-function useSyncExternalStore(subscribe, getSnapshot, // Note: The shim does not use getServerSnapshot, because pre-18 versions of
-// React do not expose a way to check if we're hydrating. So users of the shim
-// will need to track that themselves and return the correct value
-// from `getSnapshot`.
-getServerSnapshot) {
-  {
-    if (!didWarnOld18Alpha) {
-      if (React.startTransition !== undefined) {
-        didWarnOld18Alpha = true;
-
-        error('You are using an outdated, pre-release alpha of React 18 that ' + 'does not support useSyncExternalStore. The ' + 'use-sync-external-store shim will not work correctly. Upgrade ' + 'to a newer pre-release.');
+    function useSyncExternalStore$2(subscribe, getSnapshot) {
+      didWarnOld18Alpha ||
+        void 0 === React.startTransition ||
+        ((didWarnOld18Alpha = !0),
+        console.error(
+          "You are using an outdated, pre-release alpha of React 18 that does not support useSyncExternalStore. The use-sync-external-store shim will not work correctly. Upgrade to a newer pre-release."
+        ));
+      var value = getSnapshot();
+      if (!didWarnUncachedGetSnapshot) {
+        var cachedValue = getSnapshot();
+        objectIs(value, cachedValue) ||
+          (console.error(
+            "The result of getSnapshot should be cached to avoid an infinite loop"
+          ),
+          (didWarnUncachedGetSnapshot = !0));
       }
+      cachedValue = useState({
+        inst: { value: value, getSnapshot: getSnapshot }
+      });
+      var inst = cachedValue[0].inst,
+        forceUpdate = cachedValue[1];
+      useLayoutEffect(
+        function () {
+          inst.value = value;
+          inst.getSnapshot = getSnapshot;
+          checkIfSnapshotChanged(inst) && forceUpdate({ inst: inst });
+        },
+        [subscribe, value, getSnapshot]
+      );
+      useEffect(
+        function () {
+          checkIfSnapshotChanged(inst) && forceUpdate({ inst: inst });
+          return subscribe(function () {
+            checkIfSnapshotChanged(inst) && forceUpdate({ inst: inst });
+          });
+        },
+        [subscribe]
+      );
+      useDebugValue(value);
+      return value;
     }
-  } // Read the current snapshot from the store on every render. Again, this
-  // breaks the rules of React, and only works here because of specific
-  // implementation details, most importantly that updates are
-  // always synchronous.
-
-
-  var value = getSnapshot();
-
-  {
-    if (!didWarnUncachedGetSnapshot) {
-      var cachedValue = getSnapshot();
-
-      if (!objectIs(value, cachedValue)) {
-        error('The result of getSnapshot should be cached to avoid an infinite loop');
-
-        didWarnUncachedGetSnapshot = true;
+    function checkIfSnapshotChanged(inst) {
+      var latestGetSnapshot = inst.getSnapshot;
+      inst = inst.value;
+      try {
+        var nextValue = latestGetSnapshot();
+        return !objectIs(inst, nextValue);
+      } catch (error) {
+        return !0;
       }
     }
-  } // Because updates are synchronous, we don't queue them. Instead we force a
-  // re-render whenever the subscribed state changes by updating an some
-  // arbitrary useState hook. Then, during render, we call getSnapshot to read
-  // the current value.
-  //
-  // Because we don't actually use the state returned by the useState hook, we
-  // can save a bit of memory by storing other stuff in that slot.
-  //
-  // To implement the early bailout, we need to track some things on a mutable
-  // object. Usually, we would put that in a useRef hook, but we can stash it in
-  // our useState hook instead.
-  //
-  // To force a re-render, we call forceUpdate({inst}). That works because the
-  // new object always fails an equality check.
-
-
-  var _useState = useState({
-    inst: {
-      value: value,
-      getSnapshot: getSnapshot
+    function useSyncExternalStore$1(subscribe, getSnapshot) {
+      return getSnapshot();
     }
-  }),
-      inst = _useState[0].inst,
-      forceUpdate = _useState[1]; // Track the latest getSnapshot function with a ref. This needs to be updated
-  // in the layout phase so we can access it during the tearing check that
-  // happens on subscribe.
-
-
-  useLayoutEffect(function () {
-    inst.value = value;
-    inst.getSnapshot = getSnapshot; // Whenever getSnapshot or subscribe changes, we need to check in the
-    // commit phase if there was an interleaved mutation. In concurrent mode
-    // this can happen all the time, but even in synchronous mode, an earlier
-    // effect may have mutated the store.
-
-    if (checkIfSnapshotChanged(inst)) {
-      // Force a re-render.
-      forceUpdate({
-        inst: inst
-      });
-    }
-  }, [subscribe, value, getSnapshot]);
-  useEffect(function () {
-    // Check for changes right before subscribing. Subsequent changes will be
-    // detected in the subscription handler.
-    if (checkIfSnapshotChanged(inst)) {
-      // Force a re-render.
-      forceUpdate({
-        inst: inst
-      });
-    }
-
-    var handleStoreChange = function () {
-      // TODO: Because there is no cross-renderer API for batching updates, it's
-      // up to the consumer of this library to wrap their subscription event
-      // with unstable_batchedUpdates. Should we try to detect when this isn't
-      // the case and print a warning in development?
-      // The store changed. Check if the snapshot changed since the last time we
-      // read from the store.
-      if (checkIfSnapshotChanged(inst)) {
-        // Force a re-render.
-        forceUpdate({
-          inst: inst
-        });
-      }
-    }; // Subscribe to the store and return a clean-up function.
-
-
-    return subscribe(handleStoreChange);
-  }, [subscribe]);
-  useDebugValue(value);
-  return value;
-}
-
-function checkIfSnapshotChanged(inst) {
-  var latestGetSnapshot = inst.getSnapshot;
-  var prevValue = inst.value;
-
-  try {
-    var nextValue = latestGetSnapshot();
-    return !objectIs(prevValue, nextValue);
-  } catch (error) {
-    return true;
-  }
-}
-
-function useSyncExternalStore$1(subscribe, getSnapshot, getServerSnapshot) {
-  // Note: The shim does not use getServerSnapshot, because pre-18 versions of
-  // React do not expose a way to check if we're hydrating. So users of the shim
-  // will need to track that themselves and return the correct value
-  // from `getSnapshot`.
-  return getSnapshot();
-}
-
-var canUseDOM = !!(typeof window !== 'undefined' && typeof window.document !== 'undefined' && typeof window.document.createElement !== 'undefined');
-
-var isServerEnvironment = !canUseDOM;
-
-var shim = isServerEnvironment ? useSyncExternalStore$1 : useSyncExternalStore;
-var useSyncExternalStore$2 = React.useSyncExternalStore !== undefined ? React.useSyncExternalStore : shim;
-
-exports.useSyncExternalStore = useSyncExternalStore$2;
-          /* global __REACT_DEVTOOLS_GLOBAL_HOOK__ */
-if (
-  typeof __REACT_DEVTOOLS_GLOBAL_HOOK__ !== 'undefined' &&
-  typeof __REACT_DEVTOOLS_GLOBAL_HOOK__.registerInternalModuleStop ===
-    'function'
-) {
-  __REACT_DEVTOOLS_GLOBAL_HOOK__.registerInternalModuleStop(new Error());
-}
-        
+    "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,
+      useState = React.useState,
+      useEffect = React.useEffect,
+      useLayoutEffect = React.useLayoutEffect,
+      useDebugValue = React.useDebugValue,
+      didWarnOld18Alpha = !1,
+      didWarnUncachedGetSnapshot = !1,
+      shim =
+        "undefined" === typeof window ||
+        "undefined" === typeof window.document ||
+        "undefined" === typeof window.document.createElement
+          ? useSyncExternalStore$1
+          : useSyncExternalStore$2;
+    exports.useSyncExternalStore =
+      void 0 !== React.useSyncExternalStore ? React.useSyncExternalStore : shim;
+    "undefined" !== typeof __REACT_DEVTOOLS_GLOBAL_HOOK__ &&
+      "function" ===
+        typeof __REACT_DEVTOOLS_GLOBAL_HOOK__.registerInternalModuleStop &&
+      __REACT_DEVTOOLS_GLOBAL_HOOK__.registerInternalModuleStop(Error());
   })();
-}