fix(core): update

ts/interfaces/index.ts

@@ -0,0 +1 @@
+export * from './message';

ts/interfaces/message.ts

@@ -0,0 +1,30 @@
+export interface IMailgunMessage {
+  Received: string;
+  From: string;
+  'X-Envelope-From': string;
+  recipients: string;
+  'X-Google-Dkim-Signature': string;
+  To: string;
+  'message-headers': [[string, string]];
+  'Dkim-Signature': string;
+  'content-id-map': any;
+  subject: 'test2';
+  'stripped-html': string;
+  'X-Mailgun-Incoming': 'Yes';
+  'X-Received': string;
+  'X-Gm-Message-State': string;
+  'body-plain': string;
+  attachments: Array<{
+      url: string,
+      'content-type': string,
+      name: string,
+      size: number
+    }>;
+  'body-html': string;
+  'Mime-Version': string;
+  Date: string,
+  'Message-Id': string;
+  'Content-Type': string;
+  'X-Google-Smtp-Source': string;
+  Subject: string;
+}