From 0d3581253acb21be95fb8cd6c26fb47998154ef0 Mon Sep 17 00:00:00 2001
From: rozetko <rozetko@corpglory.com>
Date: Wed, 25 May 2022 16:52:42 +0400
Subject: [PATCH] minor fix

---
 src/models/gauge_options.ts | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/models/gauge_options.ts b/src/models/gauge_options.ts
index b8c3c71..dcbdaee 100644
--- a/src/models/gauge_options.ts
+++ b/src/models/gauge_options.ts
@@ -145,7 +145,7 @@ export class GaugeOptions extends CoreOptions<GaugeConfig> {
     return this._options.outerRadius;
   }
 
-  valueFormatter(value: number): string {
+  valueFormatter(value?: number | null): string {
     if(this._options.valueFormatter) {
       return this._options.valueFormatter(value);
     }