> ## Documentation Index
> Fetch the complete documentation index at: https://docs.nanoforge.eu/llms.txt
> Use this file to discover all available pages before exploring further.

# Library class

> Base class for all NanoForge libraries.

import { PageLink } from '/snippets/tsdocs/PageLink.jsx';
import { RefLink } from '/snippets/tsdocs/RefLink.jsx';

# Library

## Summary

Base class for all NanoForge libraries.

## Signature

```typescript theme={null}
declare abstract class Library implements ILibrary 
```

## Constructors

### constructor

Constructs a new instance of the class

## Properties

### \_relationship

**Modifiers**: protected
**Type**:`protected _relationship: RelationshipHandler;`

## Remarks

Extend this class (or one of its typed subclasses such as `BaseAssetManagerLibrary`, `BaseSoundLibrary`, etc.) to create a custom library. At minimum you must implement the `ILibrary.__name` getter and register the library with the engine before calling `NanoforgeApplication.init`.

## Examples

### Example 1

```typescript theme={null}
```