---
title: "WorkerEventMap | 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 WorkerEventMap

interface WorkerEventMap {  
    [error](#error): ErrorEvent;  
    [message](#message): MessageEvent;  
    [messageerror](#messageerror): MessageEvent;  
}

#### Hierarchy ([View Summary](https://docs.maptiler.com/sdk-js/api-reference/hierarchy/#Externals.WorkerEventMap))

-   [AbstractWorkerEventMap](https://docs.maptiler.com/sdk-js/api-reference/interfaces/Externals.AbstractWorkerEventMap/)
-   [MessageEventTargetEventMap](https://docs.maptiler.com/sdk-js/api-reference/interfaces/Externals.MessageEventTargetEventMap/)
    -   WorkerEventMap

##### Index

### Properties[](#properties)

[error](#error) [message](#message) [messageerror](#messageerror)

## Properties[](#properties-1)

### error[](#error)

error: ErrorEvent

Inherited from [AbstractWorkerEventMap](https://docs.maptiler.com/sdk-js/api-reference/interfaces/Externals.AbstractWorkerEventMap/).[error](https://docs.maptiler.com/sdk-js/api-reference/interfaces/Externals.AbstractWorkerEventMap/#error)

### message[](#message)

message: MessageEvent

Inherited from [MessageEventTargetEventMap](https://docs.maptiler.com/sdk-js/api-reference/interfaces/Externals.MessageEventTargetEventMap/).[message](https://docs.maptiler.com/sdk-js/api-reference/interfaces/Externals.MessageEventTargetEventMap/#message)

### messageerror[](#messageerror)

messageerror: MessageEvent

Inherited from [MessageEventTargetEventMap](https://docs.maptiler.com/sdk-js/api-reference/interfaces/Externals.MessageEventTargetEventMap/).[messageerror](https://docs.maptiler.com/sdk-js/api-reference/interfaces/Externals.MessageEventTargetEventMap/#messageerror)