@empathyco/x-components/docs/API-reference/api/x-components.mutationstree.md

Empathy X Components

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[Home](./index.md) &gt; [@empathyco/x-components](./x-components.md) &gt; [MutationsTree](./x-components.mutationstree.md)

## MutationsTree type

Type-safe mutations definition type. An object with this type is what it is needed to define [Vuex](https://vuex.vuejs.org/) mutations.

**Signature:**

```typescript
export type MutationsTree<State extends Dictionary, Mutations extends MutationsDictionary<Mutations>> = {
    [Key in keyof Mutations]: (state: State, payload: ExtractPayload<Mutations[Key]>) => void;
};
```
**References:** [MutationsDictionary](./x-components.mutationsdictionary.md)<!-- -->, [ExtractPayload](./x-components.extractpayload.md)