***
title: "MergeConfig"
generated: true
---------------
Performs a deep merge of two VendureConfig objects. Unlike `Object.assign()` the `target` object is
not mutated, instead the function returns a new object which is the result of deeply merging the
values of `source` into `target`.
Arrays do not get merged, they are treated as a single value that will be replaced. So if merging the
`plugins` array, you must explicitly concatenate the array.
*Example*
```ts
const result = mergeConfig(defaultConfig, {
assetOptions: {
uploadMaxFileSize: 5000,
},
plugins: [
...defaultConfig.plugins,
MyPlugin,
]
};
```
```ts title="Signature"
function mergeConfig(target: T, source: PartialVendureConfig, depth: = 0): T
```
Parameters
### target
\
### source
\
### depth
\