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node_modules/zustand/react/shallow.d.ts

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+export declare function useShallow<S, U>(selector: (state: S) => U): (state: S) => U;

node_modules/zustand/react/shallow.js

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+'use strict';
+
+var ReactExports = require('react');
+
+function _unsupportedIterableToArray(o, minLen) {
+  if (!o) return;
+  if (typeof o === "string") return _arrayLikeToArray(o, minLen);
+  var n = Object.prototype.toString.call(o).slice(8, -1);
+  if (n === "Object" && o.constructor) n = o.constructor.name;
+  if (n === "Map" || n === "Set") return Array.from(o);
+  if (n === "Arguments" || /^(?:Ui|I)nt(?:8|16|32)(?:Clamped)?Array$/.test(n)) return _arrayLikeToArray(o, minLen);
+}
+function _arrayLikeToArray(arr, len) {
+  if (len == null || len > arr.length) len = arr.length;
+  for (var i = 0, arr2 = new Array(len); i < len; i++) arr2[i] = arr[i];
+  return arr2;
+}
+function _createForOfIteratorHelperLoose(o, allowArrayLike) {
+  var it = typeof Symbol !== "undefined" && o[Symbol.iterator] || o["@@iterator"];
+  if (it) return (it = it.call(o)).next.bind(it);
+  if (Array.isArray(o) || (it = _unsupportedIterableToArray(o)) || allowArrayLike && o && typeof o.length === "number") {
+    if (it) o = it;
+    var i = 0;
+    return function () {
+      if (i >= o.length) return {
+        done: true
+      };
+      return {
+        done: false,
+        value: o[i++]
+      };
+    };
+  }
+  throw new TypeError("Invalid attempt to iterate non-iterable instance.\nIn order to be iterable, non-array objects must have a [Symbol.iterator]() method.");
+}
+
+function shallow(objA, objB) {
+  if (Object.is(objA, objB)) {
+    return true;
+  }
+  if (typeof objA !== 'object' || objA === null || typeof objB !== 'object' || objB === null) {
+    return false;
+  }
+  if (objA instanceof Map && objB instanceof Map) {
+    if (objA.size !== objB.size) return false;
+    for (var _iterator = _createForOfIteratorHelperLoose(objA), _step; !(_step = _iterator()).done;) {
+      var _step$value = _step.value,
+        key = _step$value[0],
+        value = _step$value[1];
+      if (!Object.is(value, objB.get(key))) {
+        return false;
+      }
+    }
+    return true;
+  }
+  if (objA instanceof Set && objB instanceof Set) {
+    if (objA.size !== objB.size) return false;
+    for (var _iterator2 = _createForOfIteratorHelperLoose(objA), _step2; !(_step2 = _iterator2()).done;) {
+      var _value = _step2.value;
+      if (!objB.has(_value)) {
+        return false;
+      }
+    }
+    return true;
+  }
+  var keysA = Object.keys(objA);
+  if (keysA.length !== Object.keys(objB).length) {
+    return false;
+  }
+  for (var i = 0; i < keysA.length; i++) {
+    if (!Object.prototype.hasOwnProperty.call(objB, keysA[i]) || !Object.is(objA[keysA[i]], objB[keysA[i]])) {
+      return false;
+    }
+  }
+  return true;
+}
+
+var useRef = ReactExports.useRef;
+function useShallow(selector) {
+  var prev = useRef();
+  return function (state) {
+    var next = selector(state);
+    return shallow(prev.current, next) ? prev.current : prev.current = next;
+  };
+}
+
+exports.useShallow = useShallow;