diff --git a/types.ts b/types.ts
index ec0a89a1..3b8825eb 100644
--- a/types.ts
+++ b/types.ts
@@ -1,5 +1,20 @@
+type ModuleProperties = {
+  defaults?: object,
+  start?(): void,
+  getHeader?(): string,
+  getTemplate?(): string,
+  getTemplateData?(): object,
+  notificationReceived?(notification: string, payload: any, sender: object): void,
+  socketNotificationReceived?(notification: string, payload: any): void,
+  suspend?(): void,
+  resume?(): void,
+  getDom?(): HTMLElement,
+  getStyles?(): string[],
+  [key: string]: any,
+};
+
 export declare const Module: {
-  register(moduleName: string, moduleProperties: object): void;
+  register(moduleName: string, moduleProperties: ModuleProperties): void;
 };
 
 export declare const Log: {