---
title: "FillLayoutProps | 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 FillLayoutProps

type FillLayoutProps \= {  
    ["fill-sort-key"](#fill-sort-key): [DataDrivenProperty](https://docs.maptiler.com/sdk-js/api-reference/classes/Externals.DataDrivenProperty/)<number\>;  
}

##### Index

### Properties[](#properties)

[fill-sort-key](#fill-sort-key)

## Properties[](#properties-1)

### fill-sort-key[](#fill-sort-key)

"fill-sort-key": [DataDrivenProperty](https://docs.maptiler.com/sdk-js/api-reference/classes/Externals.DataDrivenProperty/)<number\>