---
title: "__ExtractProps | 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 \_\_ExtractProps<T>

\_\_ExtractProps: [T](#t) extends { \_properties: { properties: infer P } } ? P : never

#### Type Parameters

-   T

#### Deprecated[](#deprecated)

Will be removed from public API in MapTiler SDK v4