[data] Export the type for the combineReducers export

packages/data/README.md

@@ -342,6 +342,10 @@ const store = createReduxStore( 'my-shop', {
 register( store );
 ```
 
+_Type_
+
+-   `import('./types').combineReducers`
+
 _Parameters_
 
 -   _reducers_ `Object`: An object whose values correspond to different reducing functions that need to be combined into one.

packages/data/src/index.js

@@ -1,7 +1,7 @@
 /**
  * External dependencies
  */
-import combineReducers from 'turbo-combine-reducers';
+import turboCombineReducers from 'turbo-combine-reducers';
 
 /**
  * Internal dependencies
@@ -43,6 +43,7 @@ export { plugins };
  * The combineReducers helper function turns an object whose values are different
  * reducing functions into a single reducing function you can pass to registerReducer.
  *
+ * @type  {import('./types').combineReducers}
  * @param {Object} reducers An object whose values correspond to different reducing
  *                          functions that need to be combined into one.
  *
@@ -77,7 +78,7 @@ export { plugins };
  * @return {Function} A reducer that invokes every reducer inside the reducers
  *                    object, and constructs a state object with the same shape.
  */
-export { combineReducers };
+export const combineReducers = turboCombineReducers;
 
 /**
  * Given a store descriptor, returns an object of the store's selectors.

packages/data/src/types.ts

@@ -1,3 +1,9 @@
+/**
+ * External dependencies
+ */
+// eslint-disable-next-line no-restricted-imports
+import type { combineReducers as reduxCombineReducers } from 'redux';
+
 type MapOf< T > = { [ name: string ]: T };
 
 export type ActionCreator = Function | Generator;
@@ -97,3 +103,5 @@ type SelectorsOf< Config extends AnyConfig > = Config extends ReduxStoreConfig<
 >
 	? { [ name in keyof Selectors ]: Function }
 	: never;
+
+export type combineReducers = typeof reduxCombineReducers;