🤖 Merge PR DefinitelyTyped#72148 Update Plotlyjs to support subtitle by @kojo12228

Author: kojo12228

types/plotly.js/index.d.ts

@@ -421,6 +421,12 @@ export interface Layout {
             xanchor: "auto" | "left" | "center" | "right";
             yanchor: "auto" | "top" | "middle" | "bottom";
             pad: Partial<Padding>;
+            subtitle:
+                | string
+                | Partial<{
+                    text: string;
+                    font: Partial<Font>;
+                }>;
         }>;
     titlefont: Partial<Font>;
     autosize: boolean;

types/plotly.js/test/core-tests.ts

@@ -31,7 +31,10 @@ const trace2 = {
 const data = [trace1, trace2];
 const tickangle: "auto" = "auto";
 const layout = {
-    title: "Sales Growth",
+    title: {
+        text: "Sales Growth",
+        subtitle: "Annual sales growth between 1999 and 2002",
+    },
     xaxis: {
         title: "Year",
         showgrid: false,