---
url: /reference/fs.md
---

# @signaldb/fs

## createFileSystemAdapter (`default`)

```js
import createFileSystemAdapter from '@signaldb/fs'
import { Collection } from '@signaldb/core'

const collection = new Collection({
  persistence: createFileSystemAdapter('path/to/db.json'),
})
```

Function to create a file system adapter for use with a collection.
In a Node.js environment, we don't have access to local storage for data preservation. Instead, we resort to saving our data as plain JSON files, which effectively serves as a way to persist collection items. All that's required from you is to specify the desired filename for each file.