---
title: "OffscreenCanvasEventMap | JavaScript maps SDK"
description: "Documentation for MapTiler SDK"
---

> For AI agents: a documentation index is available at [/llms.txt](https://docs.maptiler.com/llms.txt). Markdown versions of all pages are available by appending .md to any URL.

# Interface OffscreenCanvasEventMap

interface OffscreenCanvasEventMap {  
    [contextlost](#contextlost): Event;  
    [contextrestored](#contextrestored): Event;  
}

##### Index

### Properties[](#properties)

[contextlost](#contextlost) [contextrestored](#contextrestored)

## Properties[](#properties-1)

### contextlost[](#contextlost)

contextlost: Event

### contextrestored[](#contextrestored)

contextrestored: Event