react-redux - npm Package Compare versions

Comparing version 7.2.4 to 7.2.5

dist/react-redux.min.js

@@ -1,2 +0,2 @@
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 	 * LICENSE file in the root directory of this source tree.
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e&&null!==e&&(e.$$typeof===$||e.$$typeof===R||e.$$typeof===O||e.$$typeof===w||e.$$typeof===E||e.$$typeof===j||e.$$typeof===q||e.$$typeof===D||e.$$typeof===N)},typeOf:_},H=u((function(e){e.exports=k})),U={childContextTypes:!0,contextType:!0,contextTypes:!0,defaultProps:!0,displayName:!0,getDefaultProps:!0,getDerivedStateFromError:!0,getDerivedStateFromProps:!0,mixins:!0,propTypes:!0,type:!0},A={name:!0,length:!0,prototype:!0,caller:!0,callee:!0,arguments:!0,arity:!0},W={$$typeof:!0,compare:!0,defaultProps:!0,displayName:!0,propTypes:!0,type:!0},L={};function I(e){return H.isMemo(e)?W:L[e.$$typeof]||U}L[H.ForwardRef]={$$typeof:!0,render:!0,defaultProps:!0,displayName:!0,propTypes:!0},L[H.Memo]=W;var z=Object.defineProperty,K=Object.getOwnPropertyNames,V=Object.getOwnPropertySymbols,B=Object.getOwnPropertyDescriptor,Y=Object.getPrototypeOf,G=Object.prototype;var J=function e(r,t,n){if("string"!=typeof t){if(G){var o=Y(t);o&&o!==G&&e(r,o,n)}var u=K(t);V&&(u=u.concat(V(t)));for(var a=I(r),c=I(t),i=0;u.length>i;++i){var f=u[i];if(!(A[f]||n&&n[f]||c&&c[f]||a&&a[f])){var s=B(t,f);try{z(r,f,s)}catch(e){}}}}return r},Q=["getDisplayName","methodName","renderCountProp","shouldHandleStateChanges","storeKey","withRef","forwardRef","context"],X=["reactReduxForwardedRef"],Z=[],ee=[null,null];function re(e,r){return[r.payload,e[1]+1]}function te(e,r,t){d((function(){return e.apply(void 0,r)}),t)}function ne(e,r,t,n,o,u,a){e.current=n,r.current=o,t.current=!1,u.current&&(u.current=null,a())}function oe(e,r,t,n,o,u,a,c,i,f){if(e){var s=!1,p=null,l=function(){if(!s){var e,t,l=r.getState();try{e=n(l,o.current)}catch(e){t=e,p=e}t||(p=null),e===u.current?a.current||i():(u.current=e,c.current=e,a.current=!0,f({type:"STORE_UPDATED",payload:{error:t}}))}};t.onStateChange=l,t.trySubscribe(),l();return function(){if(s=!0,t.tryUnsubscribe(),t.onStateChange=null,p)throw p}}}var ue=function(){return[null,0]};function ae(e,t){void 0===t&&(t={});var n=t,u=n.getDisplayName,a=void 0===u?function(e){return"ConnectAdvanced("+e+")"}:u,c=n.methodName,f=void 0===c?"connectAdvanced":c,s=n.renderCountProp,p=void 0===s?void 0:s,d=n.shouldHandleStateChanges,m=void 0===d||d,b=n.storeKey,h=void 0===b?"store":b,S=n.forwardRef,P=void 0!==S&&S,g=n.context,O=void 0===g?i:g,w=v(n,Q),C=O;return function(t){var n=t.displayName||t.name||"Component",u=a(n),c=y({},w,{getDisplayName:a,methodName:f,renderCountProp:p,shouldHandleStateChanges:m,storeKey:h,displayName:u,wrappedComponentName:n,WrappedComponent:t}),i=w.pure;var s=i?r.useMemo:function(e){return e()};function d(n){var u=r.useMemo((function(){var e=n.reactReduxForwardedRef,r=v(n,X);return[n.context,e,r]}),[n]),a=u[0],i=u[1],f=u[2],p=r.useMemo((function(){return a&&a.Consumer&&H.isContextConsumer(o.default.createElement(a.Consumer,null))?a:C}),[a,C]),d=r.useContext(p),b=!!n.store&&!!n.store.getState&&!!n.store.dispatch,h=b?n.store:d.store,S=r.useMemo((function(){return function(r){return e(r.dispatch,c)}(h)}),[h]),P=r.useMemo((function(){if(!m)return ee;var e=l(h,b?null:d.subscription),r=e.notifyNestedSubs.bind(e);return[e,r]}),[h,b,d]),g=P[0],O=P[1],w=r.useMemo((function(){return b?d:y({},d,{subscription:g})}),[b,d,g]),x=r.useReducer(re,Z,ue),E=x[0][0],T=x[1];if(E&&E.error)throw E.error;var M=r.useRef(),R=r.useRef(f),$=r.useRef(),N=r.useRef(!1),j=s((function(){return $.current&&f===R.current?$.current:S(h.getState(),f)}),[h,E,f]);te(ne,[R,M,N,f,j,$,O]),te(oe,[m,h,g,S,R,M,N,$,O,T],[h,g,S]);var q=r.useMemo((function(){return o.default.createElement(t,y({},j,{ref:i}))}),[i,t,j]);return r.useMemo((function(){return m?o.default.createElement(p.Provider,{value:w},q):q}),[p,q,w])}var b=i?o.default.memo(d):d;if(b.WrappedComponent=t,b.displayName=d.displayName=u,P){var S=o.default.forwardRef((function(e,r){return o.default.createElement(b,y({},e,{reactReduxForwardedRef:r}))}));return S.displayName=u,S.WrappedComponent=t,J(S,t)}return J(b,t)}}function ce(e,r){return e===r?0!==e||0!==r||1/e==1/r:e!=e&&r!=r}function ie(e,r){if(ce(e,r))return!0;if("object"!=typeof e||null===e||"object"!=typeof r||null===r)return!1;var t=Object.keys(e);if(t.length!==Object.keys(r).length)return!1;for(var n=0;t.length>n;n++)if(!Object.prototype.hasOwnProperty.call(r,t[n])||!ce(e[t[n]],r[t[n]]))return!1;return!0}function fe(e){return function(r,t){var n=e(r,t);function o(){return n}return o.dependsOnOwnProps=!1,o}}function se(e){return null!=e.dependsOnOwnProps?!!e.dependsOnOwnProps:1!==e.length}function pe(e,r){return function(r,t){var n=function(e,r){return n.dependsOnOwnProps?n.mapToProps(e,r):n.mapToProps(e)};return n.dependsOnOwnProps=!0,n.mapToProps=function(r,t){n.mapToProps=e,n.dependsOnOwnProps=se(e);var o=n(r,t);return"function"==typeof o&&(n.mapToProps=o,n.dependsOnOwnProps=se(o),o=n(r,t)),o},n}}var le=[function(e){return"function"==typeof e?pe(e):void 0},function(e){return e?void 0:fe((function(e){return{dispatch:e}}))},function(e){return e&&"object"==typeof 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u=o,a=d,m&&b?(c=e(u,a),r.dependsOnOwnProps&&(i=r(n,a)),f=t(c,i,a)):m?(e.dependsOnOwnProps&&(c=e(u,a)),r.dependsOnOwnProps&&(i=r(n,a)),f=t(c,i,a)):b?(y=e(u,a),v=!l(y,c),c=y,v&&(f=t(c,i,a)),f):f}return function(o,s){return d?y(o,s):(c=e(u=o,a=s),i=r(n,a),f=t(c,i,a),d=!0,f)}}function Se(e,r){var t=r.initMapStateToProps,n=r.initMapDispatchToProps,o=r.initMergeProps,u=v(r,me),a=t(e,u),c=n(e,u),i=o(e,u);return(u.pure?he:be)(a,c,i,e,u)}var Pe=["pure","areStatesEqual","areOwnPropsEqual","areStatePropsEqual","areMergedPropsEqual"];function ge(e,r,t){for(var n=r.length-1;n>=0;n--){var o=r[n](e);if(o)return o}return function(r,n){throw Error("Invalid value of type "+typeof e+" for "+t+" argument when connecting component "+n.wrappedComponentName+".")}}function Oe(e,r){return e===r}function we(e){var r=void 0===e?{}:e,t=r.connectHOC,n=void 0===t?ae:t,o=r.mapStateToPropsFactories,u=void 0===o?de:o,a=r.mapDispatchToPropsFactories,c=void 0===a?le:a,i=r.mergePropsFactories,f=void 0===i?ve:i,s=r.selectorFactory,p=void 0===s?Se:s;return function(e,r,t,o){void 0===o&&(o={});var a=o.pure,i=void 0===a||a,s=o.areStatesEqual,l=void 0===s?Oe:s,d=o.areOwnPropsEqual,m=void 0===d?ie:d,b=o.areStatePropsEqual,h=void 0===b?ie:b,S=o.areMergedPropsEqual,P=void 0===S?ie:S,g=v(o,Pe),O=ge(e,u,"mapStateToProps"),w=ge(r,c,"mapDispatchToProps"),C=ge(t,f,"mergeProps");return n(p,y({methodName:"connect",getDisplayName:function(e){return"Connect("+e+")"},shouldHandleStateChanges:!!e,initMapStateToProps:O,initMapDispatchToProps:w,initMergeProps:C,pure:i,areStatesEqual:l,areOwnPropsEqual:m,areStatePropsEqual:h,areMergedPropsEqual:P},g))}}var Ce=we();function xe(){return r.useContext(i)}function Ee(e){void 0===e&&(e=i);var t=e===i?xe:function(){return r.useContext(e)};return function(){return t().store}}var Te=Ee();function Me(e){void 0===e&&(e=i);var r=e===i?Te:Ee(e);return function(){return r().dispatch}}var Re=Me(),$e=function(e,r){return e===r};function Ne(e){void 0===e&&(e=i);var t=e===i?xe:function(){return r.useContext(e)};return function(e,n){void 0===n&&(n=$e);var o=t(),u=function(e,t,n,o){var u,a=r.useReducer((function(e){return e+1}),0)[1],c=r.useMemo((function(){return l(n,o)}),[n,o]),i=r.useRef(),f=r.useRef(),s=r.useRef(),p=r.useRef(),y=n.getState();try{if(e!==f.current||y!==s.current||i.current){var v=e(y);u=void 0!==p.current&&t(v,p.current)?p.current:v}else u=p.current}catch(e){throw i.current&&(e.message+="\nThe error may be correlated with this previous error:\n"+i.current.stack+"\n\n"),e}return d((function(){f.current=e,s.current=y,p.current=u,i.current=void 0})),d((function(){function e(){try{var e=n.getState();if(e===s.current)return;var r=f.current(e);if(t(r,p.current))return;p.current=r,s.current=e}catch(e){i.current=e}a()}return c.onStateChange=e,c.trySubscribe(),e(),function(){return c.tryUnsubscribe()}}),[n,c]),u}(e,n,o.store,o.subscription);return r.useDebugValue(u),u}}var je=Ne();f=t.unstable_batchedUpdates,Object.defineProperty(e,"batch",{enumerable:!0,get:function(){return t.unstable_batchedUpdates}}),e.Provider=function(e){var t=e.store,n=e.context,u=e.children,a=r.useMemo((function(){var e=l(t);return e.onStateChange=e.notifyNestedSubs,{store:t,subscription:e}}),[t]),c=r.useMemo((function(){return t.getState()}),[t]);return d((function(){var e=a.subscription;return e.trySubscribe(),c!==t.getState()&&e.notifyNestedSubs(),function(){e.tryUnsubscribe(),e.onStateChange=null}}),[a,c]),o.default.createElement((n||i).Provider,{value:a},u)},e.ReactReduxContext=i,e.connect=Ce,e.connectAdvanced=ae,e.createDispatchHook=Me,e.createSelectorHook=Ne,e.createStoreHook=Ee,e.shallowEqual=ie,e.useDispatch=Re,e.useSelector=je,e.useStore=Te,Object.defineProperty(e,"__esModule",{value:!0})}));

es/alternate-renderers.js

@@ -1,12 +0,6 @@
-import Provider from './components/Provider';
-import connectAdvanced from './components/connectAdvanced';
-import { ReactReduxContext } from './components/Context';
-import connect from './connect/connect';
-import { useDispatch } from './hooks/useDispatch';
-import { useSelector } from './hooks/useSelector';
-import { useStore } from './hooks/useStore';
-import { getBatch } from './utils/batch';
-import shallowEqual from './utils/shallowEqual'; // For other renderers besides ReactDOM and React Native, use the default noop batch function
+export * from './exports';
+import { getBatch } from './utils/batch'; // For other renderers besides ReactDOM and React Native,
+// use the default noop batch function
 
 var batch = getBatch();
-export { Provider, connectAdvanced, ReactReduxContext, connect, batch, useDispatch, useSelector, useStore, shallowEqual };
+export { batch };

es/components/connectAdvanced.js

 import _extends from "@babel/runtime/helpers/esm/extends";
 import _objectWithoutPropertiesLoose from "@babel/runtime/helpers/esm/objectWithoutPropertiesLoose";
+var _excluded = ["getDisplayName", "methodName", "renderCountProp", "shouldHandleStateChanges", "storeKey", "withRef", "forwardRef", "context"],
+    _excluded2 = ["reactReduxForwardedRef"];
 import hoistStatics from 'hoist-non-react-statics';
 import React, { useContext, useMemo, useRef, useReducer } from 'react';
 import { isValidElementType, isContextConsumer } from 'react-is';
-import Subscription from '../utils/Subscription';
+import { createSubscription } from '../utils/Subscription';
 import { useIsomorphicLayoutEffect } from '../utils/useIsomorphicLayoutEffect';
@@ -166,3 +168,3 @@ import { ReactReduxContext } from './Context'; // Define some constant arrays just to avoid re-creating these
       context = _ref2$context === void 0 ? ReactReduxContext : _ref2$context,
-      connectOptions = _objectWithoutPropertiesLoose(_ref2, ["getDisplayName", "methodName", "renderCountProp", "shouldHandleStateChanges", "storeKey", "withRef", "forwardRef", "context"]);
+      connectOptions = _objectWithoutPropertiesLoose(_ref2, _excluded);
 
@@ -224,3 +226,3 @@ if (process.env.NODE_ENV !== 'production') {
         var reactReduxForwardedRef = props.reactReduxForwardedRef,
-            wrapperProps = _objectWithoutPropertiesLoose(props, ["reactReduxForwardedRef"]);
+            wrapperProps = _objectWithoutPropertiesLoose(props, _excluded2);
 
@@ -262,3 +264,5 @@ return [props.context, reactReduxForwardedRef, wrapperProps];
 
-        var subscription = new Subscription(store, didStoreComeFromProps ? null : contextValue.subscription); // `notifyNestedSubs` is duplicated to handle the case where the component is unmounted in
+        // This Subscription's source should match where store came from: props vs. context. A component
+        // connected to the store via props shouldn't use subscription from context, or vice versa.
+        var subscription = createSubscription(store, didStoreComeFromProps ? null : contextValue.subscription); // `notifyNestedSubs` is duplicated to handle the case where the component is unmounted in
         // the middle of the notification loop, where `subscription` will then be null. This can
@@ -268,2 +272,6 @@ // probably be avoided if Subscription's listeners logic is changed to not call listeners
 
+        // `notifyNestedSubs` is duplicated to handle the case where the component is unmounted in
+        // the middle of the notification loop, where `subscription` will then be null. This can
+        // probably be avoided if Subscription's listeners logic is changed to not call listeners
+        // that have been unsubscribed in the  middle of the notification loop.
         var notifyNestedSubs = subscription.notifyNestedSubs.bind(subscription);
@@ -270,0 +278,0 @@ return [subscription, notifyNestedSubs];

es/components/Provider.js

 import React, { useMemo } from 'react';
 import PropTypes from 'prop-types';
 import { ReactReduxContext } from './Context';
-import Subscription from '../utils/Subscription';
+import { createSubscription } from '../utils/Subscription';
 import { useIsomorphicLayoutEffect } from '../utils/useIsomorphicLayoutEffect';
@@ -12,3 +12,3 @@
   var contextValue = useMemo(function () {
-    var subscription = new Subscription(store);
+    var subscription = createSubscription(store);
     subscription.onStateChange = subscription.notifyNestedSubs;
@@ -15,0 +15,0 @@ return {

es/connect/connect.js

 import _extends from "@babel/runtime/helpers/esm/extends";
 import _objectWithoutPropertiesLoose from "@babel/runtime/helpers/esm/objectWithoutPropertiesLoose";
+var _excluded = ["pure", "areStatesEqual", "areOwnPropsEqual", "areStatePropsEqual", "areMergedPropsEqual"];
 import connectAdvanced from '../components/connectAdvanced';
@@ -72,3 +73,3 @@ import shallowEqual from '../utils/shallowEqual';
         areMergedPropsEqual = _ref3$areMergedPropsE === void 0 ? shallowEqual : _ref3$areMergedPropsE,
-        extraOptions = _objectWithoutPropertiesLoose(_ref3, ["pure", "areStatesEqual", "areOwnPropsEqual", "areStatePropsEqual", "areMergedPropsEqual"]);
+        extraOptions = _objectWithoutPropertiesLoose(_ref3, _excluded);
 
@@ -75,0 +76,0 @@ var initMapStateToProps = match(mapStateToProps, mapStateToPropsFactories, 'mapStateToProps');

es/connect/selectorFactory.js

 import _objectWithoutPropertiesLoose from "@babel/runtime/helpers/esm/objectWithoutPropertiesLoose";
+var _excluded = ["initMapStateToProps", "initMapDispatchToProps", "initMergeProps"];
 import verifySubselectors from './verifySubselectors';
@@ -75,3 +76,3 @@ export function impureFinalPropsSelectorFactory(mapStateToProps, mapDispatchToProps, mergeProps, dispatch) {
       initMergeProps = _ref2.initMergeProps,
-      options = _objectWithoutPropertiesLoose(_ref2, ["initMapStateToProps", "initMapDispatchToProps", "initMergeProps"]);
+      options = _objectWithoutPropertiesLoose(_ref2, _excluded);
 
@@ -78,0 +79,0 @@ var mapStateToProps = initMapStateToProps(dispatch, options);

es/hooks/useSelector.js

 import { useReducer, useRef, useMemo, useContext, useDebugValue } from 'react';
 import { useReduxContext as useDefaultReduxContext } from './useReduxContext';
-import Subscription from '../utils/Subscription';
+import { createSubscription } from '../utils/Subscription';
 import { useIsomorphicLayoutEffect } from '../utils/useIsomorphicLayoutEffect';
@@ -18,3 +18,3 @@ import { ReactReduxContext } from '../components/Context';
   var subscription = useMemo(function () {
-    return new Subscription(store, contextSub);
+    return createSubscription(store, contextSub);
   }, [store, contextSub]);
@@ -57,4 +57,8 @@ var latestSubscriptionCallbackError = useRef();
       try {
-        var newStoreState = store.getState();
+        var newStoreState = store.getState(); // Avoid calling selector multiple times if the store's state has not changed
 
+        if (newStoreState === latestStoreState.current) {
+          return;
+        }
+
         var _newSelectedState = latestSelector.current(newStoreState);
@@ -61,0 +65,0 @@

es/index.js

@@ -1,12 +0,7 @@
-import Provider from './components/Provider';
-import connectAdvanced from './components/connectAdvanced';
-import { ReactReduxContext } from './components/Context';
-import connect from './connect/connect';
-import { useDispatch, createDispatchHook } from './hooks/useDispatch';
-import { useSelector, createSelectorHook } from './hooks/useSelector';
-import { useStore, createStoreHook } from './hooks/useStore';
-import { setBatch } from './utils/batch';
+export * from './exports';
 import { unstable_batchedUpdates as batch } from './utils/reactBatchedUpdates';
-import shallowEqual from './utils/shallowEqual';
+import { setBatch } from './utils/batch'; // Enable batched updates in our subscriptions for use
+// with standard React renderers (ReactDOM, React Native)
+
 setBatch(batch);
-export { Provider, connectAdvanced, ReactReduxContext, connect, batch, useDispatch, createDispatchHook, useSelector, createSelectorHook, useStore, createStoreHook, shallowEqual };
+export { batch };

es/utils/Subscription.js

@@ -5,6 +5,2 @@ import { getBatch } from './batch'; // encapsulates the subscription logic for connecting a component to the redux store, as
 
-var nullListeners = {
-  notify: function notify() {}
-};
-
 function createListenerCollection() {
@@ -74,51 +70,59 @@ var batch = getBatch();
 
-var Subscription = /*#__PURE__*/function () {
-  function Subscription(store, parentSub) {
-    this.store = store;
-    this.parentSub = parentSub;
-    this.unsubscribe = null;
-    this.listeners = nullListeners;
-    this.handleChangeWrapper = this.handleChangeWrapper.bind(this);
+var nullListeners = {
+  notify: function notify() {},
+  get: function get() {
+    return [];
   }
+};
+export function createSubscription(store, parentSub) {
+  var unsubscribe;
+  var listeners = nullListeners;
 
-  var _proto = Subscription.prototype;
+  function addNestedSub(listener) {
+    trySubscribe();
+    return listeners.subscribe(listener);
+  }
 
-  _proto.addNestedSub = function addNestedSub(listener) {
-    this.trySubscribe();
-    return this.listeners.subscribe(listener);
-  };
+  function notifyNestedSubs() {
+    listeners.notify();
+  }
 
-  _proto.notifyNestedSubs = function notifyNestedSubs() {
-    this.listeners.notify();
-  };
-
-  _proto.handleChangeWrapper = function handleChangeWrapper() {
-    if (this.onStateChange) {
-      this.onStateChange();
+  function handleChangeWrapper() {
+    if (subscription.onStateChange) {
+      subscription.onStateChange();
     }
-  };
+  }
 
-  _proto.isSubscribed = function isSubscribed() {
-    return Boolean(this.unsubscribe);
-  };
+  function isSubscribed() {
+    return Boolean(unsubscribe);
+  }
 
-  _proto.trySubscribe = function trySubscribe() {
-    if (!this.unsubscribe) {
-      this.unsubscribe = this.parentSub ? this.parentSub.addNestedSub(this.handleChangeWrapper) : this.store.subscribe(this.handleChangeWrapper);
-      this.listeners = createListenerCollection();
+  function trySubscribe() {
+    if (!unsubscribe) {
+      unsubscribe = parentSub ? parentSub.addNestedSub(handleChangeWrapper) : store.subscribe(handleChangeWrapper);
+      listeners = createListenerCollection();
     }
-  };
+  }
 
-  _proto.tryUnsubscribe = function tryUnsubscribe() {
-    if (this.unsubscribe) {
-      this.unsubscribe();
-      this.unsubscribe = null;
-      this.listeners.clear();
-      this.listeners = nullListeners;
+  function tryUnsubscribe() {
+    if (unsubscribe) {
+      unsubscribe();
+      unsubscribe = undefined;
+      listeners.clear();
+      listeners = nullListeners;
     }
+  }
+
+  var subscription = {
+    addNestedSub: addNestedSub,
+    notifyNestedSubs: notifyNestedSubs,
+    handleChangeWrapper: handleChangeWrapper,
+    isSubscribed: isSubscribed,
+    trySubscribe: trySubscribe,
+    tryUnsubscribe: tryUnsubscribe,
+    getListeners: function getListeners() {
+      return listeners;
+    }
   };
-
-  return Subscription;
-}();
-
-export { Subscription as default };
+  return subscription;
+}

lib/alternate-renderers.js

 "use strict";
 
-var _interopRequireDefault = require("@babel/runtime/helpers/interopRequireDefault");
-
 exports.__esModule = true;
+var _exportNames = {
+  batch: true
+};
 exports.batch = void 0;
 
-var _Provider = _interopRequireDefault(require("./components/Provider"));
+var _exports = require("./exports");
 
-exports.Provider = _Provider["default"];
+Object.keys(_exports).forEach(function (key) {
+  if (key === "default" || key === "__esModule") return;
+  if (Object.prototype.hasOwnProperty.call(_exportNames, key)) return;
+  if (key in exports && exports[key] === _exports[key]) return;
+  exports[key] = _exports[key];
+});
 
-var _connectAdvanced = _interopRequireDefault(require("./components/connectAdvanced"));
-
-exports.connectAdvanced = _connectAdvanced["default"];
-
-var _Context = require("./components/Context");
-
-exports.ReactReduxContext = _Context.ReactReduxContext;
-
-var _connect = _interopRequireDefault(require("./connect/connect"));
-
-exports.connect = _connect["default"];
-
-var _useDispatch = require("./hooks/useDispatch");
-
-exports.useDispatch = _useDispatch.useDispatch;
-
-var _useSelector = require("./hooks/useSelector");
-
-exports.useSelector = _useSelector.useSelector;
-
-var _useStore = require("./hooks/useStore");
-
-exports.useStore = _useStore.useStore;
-
 var _batch = require("./utils/batch");
 
-var _shallowEqual = _interopRequireDefault(require("./utils/shallowEqual"));
-
-exports.shallowEqual = _shallowEqual["default"];
-// For other renderers besides ReactDOM and React Native, use the default noop batch function
+// For other renderers besides ReactDOM and React Native,
+// use the default noop batch function
 var batch = (0, _batch.getBatch)();
 exports.batch = batch;

lib/components/connectAdvanced.js

 "use strict";
 
-var _interopRequireWildcard = require("@babel/runtime/helpers/interopRequireWildcard");
-
 var _interopRequireDefault = require("@babel/runtime/helpers/interopRequireDefault");
@@ -20,3 +18,3 @@
 
-var _Subscription = _interopRequireDefault(require("../utils/Subscription"));
+var _Subscription = require("../utils/Subscription");
 
@@ -27,2 +25,9 @@ var _useIsomorphicLayoutEffect = require("../utils/useIsomorphicLayoutEffect");
 
+var _excluded = ["getDisplayName", "methodName", "renderCountProp", "shouldHandleStateChanges", "storeKey", "withRef", "forwardRef", "context"],
+    _excluded2 = ["reactReduxForwardedRef"];
+
+function _getRequireWildcardCache(nodeInterop) { if (typeof WeakMap !== "function") return null; var cacheBabelInterop = new WeakMap(); var cacheNodeInterop = new WeakMap(); return (_getRequireWildcardCache = function _getRequireWildcardCache(nodeInterop) { return nodeInterop ? cacheNodeInterop : cacheBabelInterop; })(nodeInterop); }
+
+function _interopRequireWildcard(obj, nodeInterop) { if (!nodeInterop && obj && obj.__esModule) { return obj; } if (obj === null || typeof obj !== "object" && typeof obj !== "function") { return { "default": obj }; } var cache = _getRequireWildcardCache(nodeInterop); if (cache && cache.has(obj)) { return cache.get(obj); } var newObj = {}; var hasPropertyDescriptor = Object.defineProperty && Object.getOwnPropertyDescriptor; for (var key in obj) { if (key !== "default" && Object.prototype.hasOwnProperty.call(obj, key)) { var desc = hasPropertyDescriptor ? Object.getOwnPropertyDescriptor(obj, key) : null; if (desc && (desc.get || desc.set)) { Object.defineProperty(newObj, key, desc); } else { newObj[key] = obj[key]; } } } newObj["default"] = obj; if (cache) { cache.set(obj, newObj); } return newObj; }
+
 // Define some constant arrays just to avoid re-creating these
@@ -185,3 +190,3 @@ var EMPTY_ARRAY = [];
       context = _ref2$context === void 0 ? _Context.ReactReduxContext : _ref2$context,
-      connectOptions = (0, _objectWithoutPropertiesLoose2["default"])(_ref2, ["getDisplayName", "methodName", "renderCountProp", "shouldHandleStateChanges", "storeKey", "withRef", "forwardRef", "context"]);
+      connectOptions = (0, _objectWithoutPropertiesLoose2["default"])(_ref2, _excluded);
 
@@ -241,3 +246,3 @@ if (process.env.NODE_ENV !== 'production') {
         var reactReduxForwardedRef = props.reactReduxForwardedRef,
-            wrapperProps = (0, _objectWithoutPropertiesLoose2["default"])(props, ["reactReduxForwardedRef"]);
+            wrapperProps = (0, _objectWithoutPropertiesLoose2["default"])(props, _excluded2);
         return [props.context, reactReduxForwardedRef, wrapperProps];
@@ -278,3 +283,5 @@ }, [props]),
 
-        var subscription = new _Subscription["default"](store, didStoreComeFromProps ? null : contextValue.subscription); // `notifyNestedSubs` is duplicated to handle the case where the component is unmounted in
+        // This Subscription's source should match where store came from: props vs. context. A component
+        // connected to the store via props shouldn't use subscription from context, or vice versa.
+        var subscription = (0, _Subscription.createSubscription)(store, didStoreComeFromProps ? null : contextValue.subscription); // `notifyNestedSubs` is duplicated to handle the case where the component is unmounted in
         // the middle of the notification loop, where `subscription` will then be null. This can
@@ -284,2 +291,6 @@ // probably be avoided if Subscription's listeners logic is changed to not call listeners
 
+        // `notifyNestedSubs` is duplicated to handle the case where the component is unmounted in
+        // the middle of the notification loop, where `subscription` will then be null. This can
+        // probably be avoided if Subscription's listeners logic is changed to not call listeners
+        // that have been unsubscribed in the  middle of the notification loop.
         var notifyNestedSubs = subscription.notifyNestedSubs.bind(subscription);
@@ -286,0 +297,0 @@ return [subscription, notifyNestedSubs];

lib/components/Provider.js

@@ -5,4 +5,2 @@ "use strict";
 
-var _interopRequireWildcard = require("@babel/runtime/helpers/interopRequireWildcard");
-
 exports.__esModule = true;
@@ -17,6 +15,10 @@ exports["default"] = void 0;
 
-var _Subscription = _interopRequireDefault(require("../utils/Subscription"));
+var _Subscription = require("../utils/Subscription");
 
 var _useIsomorphicLayoutEffect = require("../utils/useIsomorphicLayoutEffect");
 
+function _getRequireWildcardCache(nodeInterop) { if (typeof WeakMap !== "function") return null; var cacheBabelInterop = new WeakMap(); var cacheNodeInterop = new WeakMap(); return (_getRequireWildcardCache = function _getRequireWildcardCache(nodeInterop) { return nodeInterop ? cacheNodeInterop : cacheBabelInterop; })(nodeInterop); }
+
+function _interopRequireWildcard(obj, nodeInterop) { if (!nodeInterop && obj && obj.__esModule) { return obj; } if (obj === null || typeof obj !== "object" && typeof obj !== "function") { return { "default": obj }; } var cache = _getRequireWildcardCache(nodeInterop); if (cache && cache.has(obj)) { return cache.get(obj); } var newObj = {}; var hasPropertyDescriptor = Object.defineProperty && Object.getOwnPropertyDescriptor; for (var key in obj) { if (key !== "default" && Object.prototype.hasOwnProperty.call(obj, key)) { var desc = hasPropertyDescriptor ? Object.getOwnPropertyDescriptor(obj, key) : null; if (desc && (desc.get || desc.set)) { Object.defineProperty(newObj, key, desc); } else { newObj[key] = obj[key]; } } } newObj["default"] = obj; if (cache) { cache.set(obj, newObj); } return newObj; }
+
 function Provider(_ref) {
@@ -27,3 +29,3 @@ var store = _ref.store,
   var contextValue = (0, _react.useMemo)(function () {
-    var subscription = new _Subscription["default"](store);
+    var subscription = (0, _Subscription.createSubscription)(store);
     subscription.onStateChange = subscription.notifyNestedSubs;
@@ -30,0 +32,0 @@ return {

lib/connect/connect.js

@@ -25,2 +25,4 @@ "use strict";
 
+var _excluded = ["pure", "areStatesEqual", "areOwnPropsEqual", "areStatePropsEqual", "areMergedPropsEqual"];
+
 /*
@@ -88,3 +90,3 @@ connect is a facade over connectAdvanced. It turns its args into a compatible
         areMergedPropsEqual = _ref3$areMergedPropsE === void 0 ? _shallowEqual["default"] : _ref3$areMergedPropsE,
-        extraOptions = (0, _objectWithoutPropertiesLoose2["default"])(_ref3, ["pure", "areStatesEqual", "areOwnPropsEqual", "areStatePropsEqual", "areMergedPropsEqual"]);
+        extraOptions = (0, _objectWithoutPropertiesLoose2["default"])(_ref3, _excluded);
     var initMapStateToProps = match(mapStateToProps, mapStateToPropsFactories, 'mapStateToProps');
@@ -91,0 +93,0 @@ var initMapDispatchToProps = match(mapDispatchToProps, mapDispatchToPropsFactories, 'mapDispatchToProps');

lib/connect/selectorFactory.js

@@ -14,2 +14,4 @@ "use strict";
 
+var _excluded = ["initMapStateToProps", "initMapDispatchToProps", "initMergeProps"];
+
 function impureFinalPropsSelectorFactory(mapStateToProps, mapDispatchToProps, mergeProps, dispatch) {
@@ -89,3 +91,3 @@ return function impureFinalPropsSelector(state, ownProps) {
       initMergeProps = _ref2.initMergeProps,
-      options = (0, _objectWithoutPropertiesLoose2["default"])(_ref2, ["initMapStateToProps", "initMapDispatchToProps", "initMergeProps"]);
+      options = (0, _objectWithoutPropertiesLoose2["default"])(_ref2, _excluded);
   var mapStateToProps = initMapStateToProps(dispatch, options);
@@ -92,0 +94,0 @@ var mapDispatchToProps = initMapDispatchToProps(dispatch, options);

lib/hooks/useSelector.js

 "use strict";
 
-var _interopRequireDefault = require("@babel/runtime/helpers/interopRequireDefault");
-
 exports.__esModule = true;
@@ -13,3 +11,3 @@ exports.createSelectorHook = createSelectorHook;
 
-var _Subscription = _interopRequireDefault(require("../utils/Subscription"));
+var _Subscription = require("../utils/Subscription");
 
@@ -31,3 +29,3 @@ var _useIsomorphicLayoutEffect = require("../utils/useIsomorphicLayoutEffect");
   var subscription = (0, _react.useMemo)(function () {
-    return new _Subscription["default"](store, contextSub);
+    return (0, _Subscription.createSubscription)(store, contextSub);
   }, [store, contextSub]);
@@ -70,4 +68,8 @@ var latestSubscriptionCallbackError = (0, _react.useRef)();
       try {
-        var newStoreState = store.getState();
+        var newStoreState = store.getState(); // Avoid calling selector multiple times if the store's state has not changed
 
+        if (newStoreState === latestStoreState.current) {
+          return;
+        }
+
         var _newSelectedState = latestSelector.current(newStoreState);
@@ -74,0 +76,0 @@

lib/index.js

 "use strict";
 
-var _interopRequireDefault = require("@babel/runtime/helpers/interopRequireDefault");
-
 exports.__esModule = true;
+var _exportNames = {
+  batch: true
+};
 
-var _Provider = _interopRequireDefault(require("./components/Provider"));
+var _exports = require("./exports");
 
-exports.Provider = _Provider["default"];
+Object.keys(_exports).forEach(function (key) {
+  if (key === "default" || key === "__esModule") return;
+  if (Object.prototype.hasOwnProperty.call(_exportNames, key)) return;
+  if (key in exports && exports[key] === _exports[key]) return;
+  exports[key] = _exports[key];
+});
 
-var _connectAdvanced = _interopRequireDefault(require("./components/connectAdvanced"));
-
-exports.connectAdvanced = _connectAdvanced["default"];
-
-var _Context = require("./components/Context");
-
-exports.ReactReduxContext = _Context.ReactReduxContext;
-
-var _connect = _interopRequireDefault(require("./connect/connect"));
-
-exports.connect = _connect["default"];
-
-var _useDispatch = require("./hooks/useDispatch");
-
-exports.useDispatch = _useDispatch.useDispatch;
-exports.createDispatchHook = _useDispatch.createDispatchHook;
-
-var _useSelector = require("./hooks/useSelector");
-
-exports.useSelector = _useSelector.useSelector;
-exports.createSelectorHook = _useSelector.createSelectorHook;
-
-var _useStore = require("./hooks/useStore");
-
-exports.useStore = _useStore.useStore;
-exports.createStoreHook = _useStore.createStoreHook;
-
-var _batch = require("./utils/batch");
-
 var _reactBatchedUpdates = require("./utils/reactBatchedUpdates");
@@ -44,5 +21,6 @@
 
-var _shallowEqual = _interopRequireDefault(require("./utils/shallowEqual"));
+var _batch = require("./utils/batch");
 
-exports.shallowEqual = _shallowEqual["default"];
+// Enable batched updates in our subscriptions for use
+// with standard React renderers (ReactDOM, React Native)
 (0, _batch.setBatch)(_reactBatchedUpdates.unstable_batchedUpdates);

lib/utils/Subscription.js

 "use strict";
 
 exports.__esModule = true;
-exports["default"] = void 0;
+exports.createSubscription = createSubscription;
 
@@ -11,6 +11,2 @@ var _batch = require("./batch");
 // ancestor components re-render before descendants
-var nullListeners = {
-  notify: function notify() {}
-};
-
 function createListenerCollection() {
@@ -80,51 +76,60 @@ var batch = (0, _batch.getBatch)();
 
-var Subscription = /*#__PURE__*/function () {
-  function Subscription(store, parentSub) {
-    this.store = store;
-    this.parentSub = parentSub;
-    this.unsubscribe = null;
-    this.listeners = nullListeners;
-    this.handleChangeWrapper = this.handleChangeWrapper.bind(this);
+var nullListeners = {
+  notify: function notify() {},
+  get: function get() {
+    return [];
   }
+};
 
-  var _proto = Subscription.prototype;
+function createSubscription(store, parentSub) {
+  var unsubscribe;
+  var listeners = nullListeners;
 
-  _proto.addNestedSub = function addNestedSub(listener) {
-    this.trySubscribe();
-    return this.listeners.subscribe(listener);
-  };
+  function addNestedSub(listener) {
+    trySubscribe();
+    return listeners.subscribe(listener);
+  }
 
-  _proto.notifyNestedSubs = function notifyNestedSubs() {
-    this.listeners.notify();
-  };
+  function notifyNestedSubs() {
+    listeners.notify();
+  }
 
-  _proto.handleChangeWrapper = function handleChangeWrapper() {
-    if (this.onStateChange) {
-      this.onStateChange();
+  function handleChangeWrapper() {
+    if (subscription.onStateChange) {
+      subscription.onStateChange();
     }
-  };
+  }
 
-  _proto.isSubscribed = function isSubscribed() {
-    return Boolean(this.unsubscribe);
-  };
+  function isSubscribed() {
+    return Boolean(unsubscribe);
+  }
 
-  _proto.trySubscribe = function trySubscribe() {
-    if (!this.unsubscribe) {
-      this.unsubscribe = this.parentSub ? this.parentSub.addNestedSub(this.handleChangeWrapper) : this.store.subscribe(this.handleChangeWrapper);
-      this.listeners = createListenerCollection();
+  function trySubscribe() {
+    if (!unsubscribe) {
+      unsubscribe = parentSub ? parentSub.addNestedSub(handleChangeWrapper) : store.subscribe(handleChangeWrapper);
+      listeners = createListenerCollection();
     }
-  };
+  }
 
-  _proto.tryUnsubscribe = function tryUnsubscribe() {
-    if (this.unsubscribe) {
-      this.unsubscribe();
-      this.unsubscribe = null;
-      this.listeners.clear();
-      this.listeners = nullListeners;
+  function tryUnsubscribe() {
+    if (unsubscribe) {
+      unsubscribe();
+      unsubscribe = undefined;
+      listeners.clear();
+      listeners = nullListeners;
     }
+  }
+
+  var subscription = {
+    addNestedSub: addNestedSub,
+    notifyNestedSubs: notifyNestedSubs,
+    handleChangeWrapper: handleChangeWrapper,
+    isSubscribed: isSubscribed,
+    trySubscribe: trySubscribe,
+    tryUnsubscribe: tryUnsubscribe,
+    getListeners: function getListeners() {
+      return listeners;
+    }
   };
-
-  return Subscription;
-}();
-
-exports["default"] = Subscription;
+  return subscription;
+}

package.json

 {
   "name": "react-redux",
-  "version": "7.2.4",
+  "version": "7.2.5",
   "description": "Official React bindings for Redux",
@@ -29,11 +29,14 @@ "keywords": [
     "build:umd:min": "cross-env NODE_ENV=production rollup -c -o dist/react-redux.min.js",
-    "build": "npm run build:commonjs && npm run build:es && npm run build:umd && npm run build:umd:min",
+    "build": "yarn build:commonjs && yarn build:es && yarn build:umd && yarn build:umd:min",
     "clean": "rimraf lib dist es coverage",
-    "format": "prettier --write \"{src,test}/**/*.{js,ts}\" index.d.ts \"docs/**/*.md\"",
+    "format": "prettier --write \"{src,test}/**/*.{js,ts}\"  \"docs/**/*.md\"",
     "lint": "eslint src test/utils test/components test/hooks",
-    "prepare": "npm run clean && npm run build",
-    "pretest": "npm run lint",
+    "prepare": "yarn clean && yarn build",
+    "pretest": "yarn lint",
     "test": "jest",
     "coverage": "codecov"
   },
+  "workspaces": [
+    "website"
+  ],
   "peerDependencies": {
@@ -73,3 +76,3 @@ "react": "^16.8.3 || ^17"
     "@testing-library/jest-native": "^3.4.3",
-    "@testing-library/react": "^11.1.0",
+    "@testing-library/react": "^12.0.0",
     "@testing-library/react-hooks": "^3.4.2",
@@ -93,3 +96,3 @@ "@testing-library/react-native": "^7.1.0",
     "react-dom": "^16.14.0",
-    "react-native": "^0.63.3",
+    "react-native": "^0.64.1",
     "react-test-renderer": "^16.14.0",
@@ -96,0 +99,0 @@ "redux": "^4.0.5",

README.md

@@ -1,3 +0,2 @@
-React Redux
-=========================
+# React Redux
 
@@ -7,7 +6,6 @@ Official React bindings for [Redux](https://github.com/reduxjs/redux).
 
-[![build status](https://img.shields.io/travis/reduxjs/react-redux/master.svg?style=flat-square)](https://travis-ci.org/reduxjs/react-redux) [![npm version](https://img.shields.io/npm/v/react-redux.svg?style=flat-square)](https://www.npmjs.com/package/react-redux)
+![GitHub Workflow Status](https://img.shields.io/github/workflow/status/reduxjs/react-redux/CI?style=flat-square) [![npm version](https://img.shields.io/npm/v/react-redux.svg?style=flat-square)](https://www.npmjs.com/package/react-redux)
 [![npm downloads](https://img.shields.io/npm/dm/react-redux.svg?style=flat-square)](https://www.npmjs.com/package/react-redux)
 [![redux channel on discord](https://img.shields.io/badge/[e-mail]?style=flat-square)](http://www.reactiflux.com)
 
-
 ## Installation
@@ -39,8 +37,8 @@
 
-This assumes that you’re using [npm](http://npmjs.com/) package manager 
-with a module bundler like [Webpack](https://webpack.js.org/) or 
-[Browserify](http://browserify.org/) to consume [CommonJS 
+This assumes that you’re using [npm](http://npmjs.com/) package manager
+with a module bundler like [Webpack](https://webpack.js.org/) or
+[Browserify](http://browserify.org/) to consume [CommonJS
 modules](https://webpack.js.org/api/module-methods/#commonjs).
 
-If you don’t yet use [npm](http://npmjs.com/) or a modern module bundler, and would rather prefer a single-file [UMD](https://github.com/umdjs/umd) build that makes `ReactRedux` available as a global object, you can grab a pre-built version from [cdnjs](https://cdnjs.com/libraries/react-redux). We *don’t* recommend this approach for any serious application, as most of the libraries complementary to Redux are only available on [npm](http://npmjs.com/).
+If you don’t yet use [npm](http://npmjs.com/) or a modern module bundler, and would rather prefer a single-file [UMD](https://github.com/umdjs/umd) build that makes `ReactRedux` available as a global object, you can grab a pre-built version from [cdnjs](https://cdnjs.com/libraries/react-redux). We _don’t_ recommend this approach for any serious application, as most of the libraries complementary to Redux are only available on [npm](http://npmjs.com/).
 
@@ -51,3 +49,2 @@ ## React Native
 
-
 ## Documentation
@@ -61,5 +58,5 @@
 
-We do a deep dive on how React Redux works in [this readthesource episode](https://www.youtube.com/watch?v=VJ38wSFbM3A).  
+We do a deep dive on how React Redux works in [this readthesource episode](https://www.youtube.com/watch?v=VJ38wSFbM3A).
 
-Also, the post [The History and Implementation of React-Redux](https://blog.isquaredsoftware.com/2018/11/react-redux-history-implementation/) 
+Also, the post [The History and Implementation of React-Redux](https://blog.isquaredsoftware.com/2018/11/react-redux-history-implementation/)
 explains what it does, how it works, and how the API and implementation have evolved over time.
@@ -66,0 +63,0 @@

src/alternate-renderers.js

@@ -1,26 +0,9 @@
-import Provider from './components/Provider'
-import connectAdvanced from './components/connectAdvanced'
-import { ReactReduxContext } from './components/Context'
-import connect from './connect/connect'
+export * from './exports'
 
-import { useDispatch } from './hooks/useDispatch'
-import { useSelector } from './hooks/useSelector'
-import { useStore } from './hooks/useStore'
-
 import { getBatch } from './utils/batch'
-import shallowEqual from './utils/shallowEqual'
 
-// For other renderers besides ReactDOM and React Native, use the default noop batch function
+// For other renderers besides ReactDOM and React Native,
+// use the default noop batch function
 const batch = getBatch()
 
-export {
-  Provider,
-  connectAdvanced,
-  ReactReduxContext,
-  connect,
-  batch,
-  useDispatch,
-  useSelector,
-  useStore,
-  shallowEqual,
-}
+export { batch }

src/components/connectAdvanced.js

 import hoistStatics from 'hoist-non-react-statics'
 import React, { useContext, useMemo, useRef, useReducer } from 'react'
 import { isValidElementType, isContextConsumer } from 'react-is'
-import Subscription from '../utils/Subscription'
+import { createSubscription } from '../utils/Subscription'
 import { useIsomorphicLayoutEffect } from '../utils/useIsomorphicLayoutEffect'
@@ -337,3 +337,3 @@
         // connected to the store via props shouldn't use subscription from context, or vice versa.
-        const subscription = new Subscription(
+        const subscription = createSubscription(
           store,
@@ -340,0 +340,0 @@ didStoreComeFromProps ? null : contextValue.subscription

src/components/Provider.js

 import React, { useMemo } from 'react'
 import PropTypes from 'prop-types'
 import { ReactReduxContext } from './Context'
-import Subscription from '../utils/Subscription'
+import { createSubscription } from '../utils/Subscription'
 import { useIsomorphicLayoutEffect } from '../utils/useIsomorphicLayoutEffect'
@@ -9,3 +9,3 @@
   const contextValue = useMemo(() => {
-    const subscription = new Subscription(store)
+    const subscription = createSubscription(store)
     subscription.onStateChange = subscription.notifyNestedSubs
@@ -12,0 +12,0 @@ return {

src/hooks/useSelector.js

 import { useReducer, useRef, useMemo, useContext, useDebugValue } from 'react'
 import { useReduxContext as useDefaultReduxContext } from './useReduxContext'
-import Subscription from '../utils/Subscription'
+import { createSubscription } from '../utils/Subscription'
 import { useIsomorphicLayoutEffect } from '../utils/useIsomorphicLayoutEffect'
@@ -17,3 +17,3 @@ import { ReactReduxContext } from '../components/Context'
 
-  const subscription = useMemo(() => new Subscription(store, contextSub), [
+  const subscription = useMemo(() => createSubscription(store, contextSub), [
     store,
@@ -69,2 +69,7 @@ contextSub,
         const newStoreState = store.getState()
+        // Avoid calling selector multiple times if the store's state has not changed
+        if (newStoreState === latestStoreState.current) {
+          return
+        }
+
         const newSelectedState = latestSelector.current(newStoreState)
@@ -71,0 +76,0 @@

src/index.js

@@ -1,29 +0,10 @@
-import Provider from './components/Provider'
-import connectAdvanced from './components/connectAdvanced'
-import { ReactReduxContext } from './components/Context'
-import connect from './connect/connect'
+export * from './exports'
 
-import { useDispatch, createDispatchHook } from './hooks/useDispatch'
-import { useSelector, createSelectorHook } from './hooks/useSelector'
-import { useStore, createStoreHook } from './hooks/useStore'
-
+import { unstable_batchedUpdates as batch } from './utils/reactBatchedUpdates'
 import { setBatch } from './utils/batch'
-import { unstable_batchedUpdates as batch } from './utils/reactBatchedUpdates'
-import shallowEqual from './utils/shallowEqual'
 
+// Enable batched updates in our subscriptions for use
+// with standard React renderers (ReactDOM, React Native)
 setBatch(batch)
 
-export {
-  Provider,
-  connectAdvanced,
-  ReactReduxContext,
-  connect,
-  batch,
-  useDispatch,
-  createDispatchHook,
-  useSelector,
-  createSelectorHook,
-  useStore,
-  createStoreHook,
-  shallowEqual,
-}
+export { batch }

src/utils/Subscription.js

@@ -7,4 +7,2 @@ import { getBatch } from './batch'
 
-const nullListeners = { notify() {} }
-
 function createListenerCollection() {
@@ -75,49 +73,60 @@ const batch = getBatch()
 
-export default class Subscription {
-  constructor(store, parentSub) {
-    this.store = store
-    this.parentSub = parentSub
-    this.unsubscribe = null
-    this.listeners = nullListeners
+const nullListeners = {
+  notify() {},
+  get: () => [],
+}
 
-    this.handleChangeWrapper = this.handleChangeWrapper.bind(this)
-  }
+export function createSubscription(store, parentSub) {
+  let unsubscribe
+  let listeners = nullListeners
 
-  addNestedSub(listener) {
-    this.trySubscribe()
-    return this.listeners.subscribe(listener)
+  function addNestedSub(listener) {
+    trySubscribe()
+    return listeners.subscribe(listener)
   }
 
-  notifyNestedSubs() {
-    this.listeners.notify()
+  function notifyNestedSubs() {
+    listeners.notify()
   }
 
-  handleChangeWrapper() {
-    if (this.onStateChange) {
-      this.onStateChange()
+  function handleChangeWrapper() {
+    if (subscription.onStateChange) {
+      subscription.onStateChange()
     }
   }
 
-  isSubscribed() {
-    return Boolean(this.unsubscribe)
+  function isSubscribed() {
+    return Boolean(unsubscribe)
   }
 
-  trySubscribe() {
-    if (!this.unsubscribe) {
-      this.unsubscribe = this.parentSub
-        ? this.parentSub.addNestedSub(this.handleChangeWrapper)
-        : this.store.subscribe(this.handleChangeWrapper)
+  function trySubscribe() {
+    if (!unsubscribe) {
+      unsubscribe = parentSub
+        ? parentSub.addNestedSub(handleChangeWrapper)
+        : store.subscribe(handleChangeWrapper)
 
-      this.listeners = createListenerCollection()
+      listeners = createListenerCollection()
     }
   }
 
-  tryUnsubscribe() {
-    if (this.unsubscribe) {
-      this.unsubscribe()
-      this.unsubscribe = null
-      this.listeners.clear()
-      this.listeners = nullListeners
+  function tryUnsubscribe() {
+    if (unsubscribe) {
+      unsubscribe()
+      unsubscribe = undefined
+      listeners.clear()
+      listeners = nullListeners
     }
   }
+
+  const subscription = {
+    addNestedSub,
+    notifyNestedSubs,
+    handleChangeWrapper,
+    isSubscribed,
+    trySubscribe,
+    tryUnsubscribe,
+    getListeners: () => listeners,
+  }
+
+  return subscription
 }

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Improved metrics

Total package byte prevSize

281242

increased by1.27%

Number of package files

90

increased by3.45%

Lines of code

5857

increased by1.21%

Worsened metrics

Number of lines in readme file

65

decreased by-4.41%

No dependency changes