---
title: "captureRejectionSymbol | 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.

# Variable captureRejectionSymbol`Const`

captureRejectionSymbol: unique symbol

See how to write a custom [rejection handler](https://nodejs.org/docs/latest-v25.x/api/events.html#emittersymbolfornodejsrejectionerr-eventname-args).

#### Since[](#since)

v13.4.0, v12.16.0