---
title: "Readonly | 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 Readonly<T>

Readonly: { readonly \[P in keyof [T](#t)\]: [T](#t)\[P\] }

Make all properties in T readonly

#### Type Parameters

-   T