> For the complete documentation index, see [llms.txt](https://rangle.gitbook.io/redux-beacon/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://rangle.gitbook.io/redux-beacon/index-1/create-meta-reducer.md).

# createMetaReducer

## Syntax

```javascript
createMetaReducer([eventsMap | eventsMapper], target[, extensions]);
```

### Parameters

* `eventsMap | eventsMapper`: [eventsMap](/redux-beacon/index-1/events-map.md) | [eventsMapper](/redux-beacon/index-1/events-mapper.md)
* `target`: [target](/redux-beacon/index.md)
* `extensions` *(optional)*: [extensions](/redux-beacon/index-2.md).

### Return value

* [ngrx/store meta reducer](https://gist.github.com/btroncone/a6e4347326749f938510#implementing-a-meta-reducer)

## Usage

* [Getting Started](/redux-beacon/getting-started-ngrx-users.md)
* [Examples & Recipes](https://github.com/rangle/redux-beacon/tree/197992261c3e67a3c0dfe89926419ab98587d577/docs/recipes/index.md)