---
title: "ExpressionParser | 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 ExpressionParser

ExpressionParser: (  
    args: ReadonlyArray<unknown\>,  
    context: [ParsingContext](https://docs.maptiler.com/sdk-js/api-reference/classes/Externals.ParsingContext/),  
) \=> [Expression](https://docs.maptiler.com/sdk-js/api-reference/interfaces/Expression/)

#### Type Declaration

-   -   (args: ReadonlyArray<unknown\>, context: [ParsingContext](https://docs.maptiler.com/sdk-js/api-reference/classes/Externals.ParsingContext/)): [Expression](https://docs.maptiler.com/sdk-js/api-reference/interfaces/Expression/)
    -   #### Parameters
        
        -   args: ReadonlyArray<unknown\>
        -   context: [ParsingContext](https://docs.maptiler.com/sdk-js/api-reference/classes/Externals.ParsingContext/)
        
        #### Returns [Expression](https://docs.maptiler.com/sdk-js/api-reference/interfaces/Expression/)