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

PossiblyEvaluatedValue:  
    | { kind: "constant"; value: [T](#t) }  
    | [SourceExpression](https://docs.maptiler.com/sdk-js/api-reference/types/SourceExpression/)  
    | [CompositeExpression](https://docs.maptiler.com/sdk-js/api-reference/types/CompositeExpression/)

#### Type Parameters

-   T