---
title: "ElementDefinitionOptions | 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 ElementDefinitionOptions

interface ElementDefinitionOptions {  
    [extends](#extends)?: string;  
}

##### Index

### Properties[](#properties)

[extends?](#extends)

## Properties[](#properties-1)

### `Optional`extends[](#extends)

extends?: string