From: Jacco van den Berg <39033624+LeeLenaleee@users.noreply.github.com>
Date: Tue, 13 Apr 2021 19:24:59 +0000 (+0200)
Subject: add number, null and undefined as valid return types (#8891)
X-Git-Tag: v3.1.1~11
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=f76ca010e8466cb83c3c208cc3304a2064d4743f;p=thirdparty%2FChart.js.git

add number, null and undefined as valid return types (#8891)
---

diff --git a/types/index.esm.d.ts b/types/index.esm.d.ts
index 51ec1f7f6..6d6fa09bf 100644
--- a/types/index.esm.d.ts
+++ b/types/index.esm.d.ts
@@ -2696,7 +2696,7 @@ export interface TickOptions {
   /**
    * Returns the string representation of the tick value as it should be displayed on the chart. See callback.
    */
-  callback: (tickValue: number | string, index: number, ticks: Tick[]) => string;
+  callback: (tickValue: number | string, index: number, ticks: Tick[]) => string | number | null | undefined;
   /**
    * If true, show tick labels.
    * @default true