> ## Documentation Index
> Fetch the complete documentation index at: https://dynamic-docs-feat-sidebar-revamp.mintlify.site/llms.txt
> Use this file to discover all available pages before exploring further.

# mergeNetworks

## Summary

This utility function merges two arrays of `GenericNetwork` objects, with the first array taking precedence in case of a conflict. It is imported from `@dynamic-labs/sdk-react-core`.

## Annotation

```TypeScript
export declare const mergeNetworks: (priorityNetworks: GenericNetwork[], secondaryNetworks: GenericNetwork[]) => GenericNetwork[];
```

## Example

It is commonly used when you declare [custom EVM networks](/chains/evmNetwork) or [custom SVM networks](/chains/solNetwork) for Dynamic, and you want to merge them with the networks you get from the dashboard configurations:

```TypeScript
import { mergeNetworks } from "@dynamic-labs/sdk-react-core";

const myEvmNetworks = [
    ...
]

const mySolNetworks = [
    ...
]

const DynamicSettings = {
  overrides: {
    evmNetworks: (networks) => mergeNetworks(myEvmNetworks, networks),
    solNetworks: (networks) => mergeNetworks(mySolNetworks, networks),
  }
};
```