diff --git a/types/office-runtime/index.d.ts b/types/office-runtime/index.d.ts
index 0847829553..bb0d779b11 100644
--- a/types/office-runtime/index.d.ts
+++ b/types/office-runtime/index.d.ts
@@ -12,19 +12,19 @@ Copyright (c) Microsoft Corporation
 declare namespace OfficeRuntime {
     function displayWebDialog(url: string, options: DisplayWebDialogOptions): Promise<Dialog>;
     const AsyncStorage: AsyncStorage;
-  
+
     // tslint:disable-next-line:interface-name
        /*
        * Asynchronous, global, and persistent key-value storage that can be used by Excel Custom Functions.
        * @beta
        *
-       * @remarks 
-       * Each add-in instance has its own storage partition, unique to a user and their device. 
-       * 
-       * The default amount of total storage allowed per add-in is 5MB. 
-       * 
-       * Each method listed below returns a Promise object. 
-       * 
+       * @remarks
+       * Each add-in instance has its own storage partition, unique to a user and their device.
+       *
+       * The default amount of total storage allowed per add-in is 5MB.
+       *
+       * Each method listed below returns a Promise object.
+       *
        */
     interface AsyncStorage {
       /*
@@ -34,27 +34,27 @@ declare namespace OfficeRuntime {
       getItem(key: string, callback?: (error?: Error, result?: string) => void): Promise<string>;
        /*
        * @beta
-       * Assigns the value for a key-value pair and invokes a callback when finished. Returns a Promise.  
+       * Assigns the value for a key-value pair and invokes a callback when finished. Returns a Promise.
        */
       setItem(key: string, value: string, callback?: (error?: Error) => void): Promise<void>;
       /*
        * @beta
-       * Removes an item for specified key and invokes a callback when finished. Returns a Promise. 
+       * Removes an item for specified key and invokes a callback when finished. Returns a Promise.
        */
       removeItem(key: string, callback?: (error?: Error) => void): Promise<void>;
       /*
        * @beta
-       * Erases all AsyncStorage. Returns a Promise. 
+       * Erases all AsyncStorage. Returns a Promise.
        */
       clear(callback?: (error?: Error) => void): Promise<void>;
        /*
        * @beta
-       * Returns a Promise with all keys. 
+       * Returns a Promise with all keys.
        */
       getAllKeys(callback?: (error?: Error, keys?: string[]) => void): Promise<string[]>;
        /*
        * @beta
-       * Stores multiple key-value pairs in one batch. Returns a Promise. When a key doesn't exist, returns null. 
+       * Stores multiple key-value pairs in one batch. Returns a Promise. When a key doesn't exist, returns null.
        */
       multiSet(keyValuePairs: string[][], callback?: (errors?: Error[]) => void): Promise<void>;
        /*
@@ -64,30 +64,29 @@ declare namespace OfficeRuntime {
       multiRemove(keys: string[], callback?: (errors?: Error[]) => void): Promise<void>;
       /*
       * @beta
-      * Fetches a batch of keys, specified in the `keys` array. When a key doesn't exist, returns null. 
+      * Fetches a batch of keys, specified in the `keys` array. When a key doesn't exist, returns null.
       */
       multiGet(keys: string[], callback?: (errors?: Error[], result?: string[][]) => void): Promise<string[][]>;
     }
-  
     /*
     * @beta
-    * Object representing the dialog box. 
+    * Object representing the dialog box.
     */
     interface Dialog {
        /*
        * @beta
-       * Method that closes a dialog box. 
+       * Method that closes a dialog box.
        */
       close(): Promise<void>;
     }
-  
+
        /*
-       * Provides options for how a dialog is displayed. 
+       * Provides options for how a dialog is displayed.
        */
     interface DisplayWebDialogOptions {
       /*
        * @beta
-       * Determines whether the dialog box displays as a popup (false) or within an IFrame (true). This setting is only applicable to custom functions running on Excel Online. 
+       * Determines whether the dialog box displays as a popup (false) or within an IFrame (true). This setting is only applicable to custom functions running on Excel Online.
        */
       displayInIFrame?: boolean;
       /*
@@ -95,29 +94,25 @@ declare namespace OfficeRuntime {
        * Defines the height of the dialog box as a percentage of the current display.
        */
       height?: string;
-  
-      /**
-       * @beta
-       * Defines the width of the dialog box as a percentage of the current display. 
-       */
-      width?: string;
-  
       /*
        * @beta
-       * True if title is hidden from the dialog box. 
+       * Defines the width of the dialog box as a percentage of the current display.
+       */
+      width?: string;
+      /*
+       * @beta
+       * True if title is hidden from the dialog box.
        */
       hideTitle?: boolean;
-  
        /*
        * @beta
        * Callback that is run when the dialog box is closed.
        */
       onClose?: () => void;
-  
       /*
        * @beta
        * Callback that is run when the dialog box sends an error.
        */
-      onMessage?(message: string, dialog?: Dialog): void
+      onMessage?(message: string, dialog?: Dialog): void;
     }
   }