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

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

# Type Alias ConstrainBooleanOrDOMString

ConstrainBooleanOrDOMString:  
    | boolean  
    | string  
    | [ConstrainBooleanOrDOMStringParameters](https://docs-qmgv.pages.dev/sdk-js/api-reference/interfaces/Externals.ConstrainBooleanOrDOMStringParameters/)