---
title: libraries
framework: mapkitjs
role: symbol
role_heading: Instance Property
path: mapkitjs/mapkitlibraryloadevent/libraries
---

# libraries

The libraries that the framework loaded or failed to load.

## Declaration

```data
readonly libraries: string[];
```

## Discussion

Discussion The event type can be load or load-error, which indicates if the loading operation succeeded or failed.