Chat: Add TextMessage's custom fields & fix types issues

Author: Ruslan Farkhutdinov

packages/devextreme/js/ui/chat.d.ts

@@ -290,6 +290,8 @@ export type TextMessage<TAttachment extends Attachment = Attachment> = MessageBa
      * @public
      */
     isEdited?: boolean;
+
+    [key: string]: any;
 };
 
 /**
@@ -353,7 +355,7 @@ export interface dxChatOptions extends WidgetOptions<dxChat> {
      * @type dxFileUploaderOptions
      * @public
      */
-    fileUploaderOptions?: Omit<FileUploaderOptions, 'dialogTrigger' | 'showFileList' | 'uploadMode '>;
+    fileUploaderOptions?: Omit<FileUploaderOptions, 'dialogTrigger' | 'showFileList' | 'uploadMode'>;
     /**
      * @docid
      * @default true
@@ -494,7 +496,7 @@ export interface dxChatOptions extends WidgetOptions<dxChat> {
      * @action
      * @public
      */
-    onTypingStart?: ((e: TypingEndEvent) => void) | undefined ;
+    onTypingStart?: ((e: TypingStartEvent) => void) | undefined ;
     /**
      * @docid
      * @default undefined

packages/devextreme/ts/dx.all.d.ts

@@ -11313,7 +11313,7 @@ declare module DevExpress.ui {
      */
     fileUploaderOptions?: Omit<
       DevExpress.ui.dxFileUploader.Properties,
-      'dialogTrigger' | 'showFileList' | 'uploadMode '
+      'dialogTrigger' | 'showFileList' | 'uploadMode'
     >;
     /**
      * [descr:dxChatOptions.focusStateEnabled]
@@ -11430,7 +11430,7 @@ declare module DevExpress.ui {
      * [descr:dxChatOptions.onTypingStart]
      */
     onTypingStart?:
-      | ((e: DevExpress.ui.dxChat.TypingEndEvent) => void)
+      | ((e: DevExpress.ui.dxChat.TypingStartEvent) => void)
       | undefined;
     /**
      * [descr:dxChatOptions.onTypingEnd]
@@ -34044,6 +34044,8 @@ declare module DevExpress.ui.dxChat {
        * [descr:TextMessage.isEdited]
        */
       isEdited?: boolean;
+
+      [key: string]: any;
     };
   /**
    * [descr:User]