---
title: "ExpressionRegistration | 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.

# Type Alias ExpressionRegistration

ExpressionRegistration: new (...args: any) \=> [Expression](https://docs.maptiler.com/sdk-js/api-reference/interfaces/Expression/) & {  
    parse: [ExpressionParser](https://docs.maptiler.com/sdk-js/api-reference/types/Externals.ExpressionParser/);  
}