Add toolbar button attributes to type declaration

types/easymde-test.ts

@@ -59,6 +59,9 @@ const editor2 = new EasyMDE({
             title: 'A Custom Button',
             noDisable: undefined,
             noMobile: false,
+            attributes: {
+                'data-custom': 'attribute',
+            }
         },
         '|',
         {
@@ -89,6 +92,10 @@ const editor2 = new EasyMDE({
                     action: EasyMDE.toggleBold,
                     className: 'fa fas fa-bold',
                     title: 'Bold',
+                    attributes: {
+                        'data-custom': 'some value',
+                        'data-custom-2': 'another value',
+                    }
                 },
             ],
         },

types/easymde.d.ts

@@ -74,6 +74,10 @@ declare namespace EasyMDE {
         italic?: string;
     }
 
+    interface CustomAttributes {
+        [key: string]: string;
+    }
+
     interface InsertTextOptions {
         horizontalRule?: ReadonlyArray<string>;
         image?: ReadonlyArray<string>;
@@ -142,6 +146,7 @@ declare namespace EasyMDE {
         noDisable?: boolean;
         noMobile?: boolean;
         icon?: string;
+        attributes?: CustomAttributes;
     }
 
     interface ImageTextsOptions {