Index: node_modules/react-redux/src/connect/mergeProps.ts
===================================================================
--- node_modules/react-redux/src/connect/mergeProps.ts	(revision a762898ecd37a452c782821d4c2c4955c6ed2521)
+++ node_modules/react-redux/src/connect/mergeProps.ts	(revision a762898ecd37a452c782821d4c2c4955c6ed2521)
@@ -0,0 +1,78 @@
+import type { Action, Dispatch } from 'redux'
+import verifyPlainObject from '../utils/verifyPlainObject'
+import { createInvalidArgFactory } from './invalidArgFactory'
+import type { MergeProps } from './selectorFactory'
+import type { EqualityFn } from '../types'
+
+function defaultMergeProps<
+  TStateProps,
+  TDispatchProps,
+  TOwnProps,
+  TMergedProps,
+>(
+  stateProps: TStateProps,
+  dispatchProps: TDispatchProps,
+  ownProps: TOwnProps,
+): TMergedProps {
+  // @ts-ignore
+  return { ...ownProps, ...stateProps, ...dispatchProps }
+}
+
+function wrapMergePropsFunc<
+  TStateProps,
+  TDispatchProps,
+  TOwnProps,
+  TMergedProps,
+>(
+  mergeProps: MergeProps<TStateProps, TDispatchProps, TOwnProps, TMergedProps>,
+): (
+  dispatch: Dispatch<Action<string>>,
+  options: {
+    readonly displayName: string
+    readonly areMergedPropsEqual: EqualityFn<TMergedProps>
+  },
+) => MergeProps<TStateProps, TDispatchProps, TOwnProps, TMergedProps> {
+  return function initMergePropsProxy(
+    dispatch,
+    { displayName, areMergedPropsEqual },
+  ) {
+    let hasRunOnce = false
+    let mergedProps: TMergedProps
+
+    return function mergePropsProxy(
+      stateProps: TStateProps,
+      dispatchProps: TDispatchProps,
+      ownProps: TOwnProps,
+    ) {
+      const nextMergedProps = mergeProps(stateProps, dispatchProps, ownProps)
+
+      if (hasRunOnce) {
+        if (!areMergedPropsEqual(nextMergedProps, mergedProps))
+          mergedProps = nextMergedProps
+      } else {
+        hasRunOnce = true
+        mergedProps = nextMergedProps
+
+        if (process.env.NODE_ENV !== 'production')
+          verifyPlainObject(mergedProps, displayName, 'mergeProps')
+      }
+
+      return mergedProps
+    }
+  }
+}
+
+export function mergePropsFactory<
+  TStateProps,
+  TDispatchProps,
+  TOwnProps,
+  TMergedProps,
+>(
+  mergeProps?: MergeProps<TStateProps, TDispatchProps, TOwnProps, TMergedProps>,
+) {
+  return !mergeProps
+    ? () => defaultMergeProps
+    : typeof mergeProps === 'function'
+      ? wrapMergePropsFunc(mergeProps)
+      : createInvalidArgFactory(mergeProps, 'mergeProps')
+}