diff --git a/cordova-plugin-ms-adal/cordova-plugin-ms-adal.d.ts b/cordova-plugin-ms-adal/cordova-plugin-ms-adal.d.ts
index 0d77511e0..10ebdda79 100644
--- a/cordova-plugin-ms-adal/cordova-plugin-ms-adal.d.ts
+++ b/cordova-plugin-ms-adal/cordova-plugin-ms-adal.d.ts
@@ -7,7 +7,7 @@ declare namespace Microsoft {
 
     namespace ADAL {
 
-        interface IUserInfo {
+        interface UserInfo {
             displayableId: string,
             userId: string,
             familyName: string,
@@ -18,11 +18,7 @@ declare namespace Microsoft {
             uniqueId: string,
         }
 
-        interface ITokenCache {
-            contextAuthority: string
-        }
-
-        interface ITokenCacheItem {
+        interface TokenCacheItem {
             accessToken: string,
             authority: string,
             clientId: string,
@@ -31,18 +27,18 @@ declare namespace Microsoft {
             isMultipleResourceRefreshToken: boolean,
             resource: string,
             tenantId: string,
-            userInfo: IUserInfo
+            userInfo: UserInfo
         }
 
-        interface IPromise {
+        interface Promise {
             then(doneCallBack: () => any, failCallBack?: (message: string) => any):any;
         }
 
-        interface IPromiseTokenCacheItems {
-            then(doneCallBack: (tokenCacheItems: ITokenCacheItem[]) => any, failCallBack?: (message: string) => any):any;
+        interface PromiseTokenCacheItems {
+            then(doneCallBack: (tokenCacheItems: TokenCacheItem[]) => any, failCallBack?: (message: string) => any):any;
         }
 
-        class TokenCache implements ITokenCache {
+        class TokenCache {
             contextAuthority: string
 
             /**
@@ -50,14 +46,14 @@ declare namespace Microsoft {
             *
             * @returns {Promise} Promise either fulfilled when operation is completed or rejected with error.
             */
-            clear(): IPromise;
+            clear(): Promise;
 
             /**
             * Gets all cached items.
             *
             * @returns {Promise} Promise either fulfilled with array of cached items or rejected with error.
             */
-            readItems(): IPromiseTokenCacheItems;
+            readItems(): PromiseTokenCacheItems;
 
             /**
             * Deletes cached item.
@@ -66,22 +62,10 @@ declare namespace Microsoft {
             *
             * @returns {Promise} Promise either fulfilled when operation is completed or rejected with error.
             */
-            deleteItem(item: ITokenCacheItem): IPromise;
+            deleteItem(item: TokenCacheItem): Promise;
         }
 
-        interface IAuthenticationResult {
-            accessToken: string,
-            accessTokenType: string,
-            expiresOn: Date,
-            idToken: string,
-            isMultipleResourceRefreshToken: boolean,
-            status: string,
-            statusCode: string,
-            tenantId: string,
-            userInfo: IUserInfo
-        }
-
-        class AuthenticationResult implements IAuthenticationResult {
+        class AuthenticationResult {
             accessToken: string;
             accessTokenType: string;
             expiresOn: Date;
@@ -90,7 +74,7 @@ declare namespace Microsoft {
             status: string;
             statusCode: string;
             tenantId: string;
-            userInfo: IUserInfo;
+            userInfo: UserInfo;
 
             /**
             * Creates authorization header for web requests.
@@ -100,52 +84,15 @@ declare namespace Microsoft {
             createAuthorizationHeader(): string;
         }
 
-        interface IPromiseAuthenticationResult {
-            then(doneCallBack: (context: IAuthenticationResult) => any, failCallBack?: (message: string) => any):any;
+        interface PromiseAuthenticationResult {
+            then(doneCallBack: (context: AuthenticationResult) => any, failCallBack?: (message: string) => any):any;
         }
 
-        interface IAuthenticationContext {
-            authority: string,
-            validateAuthority: boolean,
-            tokenCache: TokenCache
-
-            /**
-            * Acquires token using interactive flow if needed. It checks the cache to return existing result
-            * if not expired. It tries to use refresh token if available. If it fails to get token with
-            * refresh token, it will remove this refresh token from cache and start authentication.
-            *
-            * @param   {String}  resourceUrl Resource identifier
-            * @param   {String}  clientId    Client (application) identifier
-            * @param   {String}  redirectUrl Redirect url for this application
-            * @param   {String}  userId      User identifier (optional)
-            * @param   {String}  extraQueryParameters
-            *                                Extra query parameters (optional)
-            *                                Parameters should be escaped before passing to this method (e.g. using 'encodeURI()')
-            *
-            * @returns {Promise} Promise either fulfilled with AuthenticationResult object or rejected with error
-            */
-            acquireTokenAsync(resourceUrl: string, clientId: string, redirectUrl: string, userId?: string, extraQueryParameters?: string): IPromiseAuthenticationResult;
-
-            /**
-             * Acquires token WITHOUT using interactive flow. It checks the cache to return existing result
-             * if not expired. It tries to use refresh token if available. If it fails to get token without
-             * displaying UI it will fail. This method guarantees that no UI will be shown to user.
-             *
-             * @param   {String}  resourceUrl Resource identifier
-             * @param   {String}  clientId    Client (application) identifier
-             * @param   {String}  userId      User identifier (optional)
-             *
-             * @returns {Promise} Promise either fulfilled with AuthenticationResult object or rejected with error
-             */
-            acquireTokenSilentAsync(resourceUrl: string, clientId: string, userId: string): IPromiseAuthenticationResult;
-
+        interface PromiseAuthenticationContext {
+            then(doneCallBack: (context: AuthenticationContext) => any, failCallBack?: (message: string) => any):any;
         }
 
-        interface IPromiseAuthenticationContext {
-            then(doneCallBack: (context: IAuthenticationContext) => any, failCallBack?: (message: string) => any):any;
-        }
-
-        class AuthenticationContext implements IAuthenticationContext {
+        class AuthenticationContext implements AuthenticationContext {
             authority: string;
             validateAuthority: boolean;
             tokenCache: TokenCache;
@@ -174,7 +121,7 @@ declare namespace Microsoft {
             *
             * @returns {Promise}  Promise either fulfilled with newly created authentication context or rejected with error
             */
-            static createAsync(authority: string, validateAuthority?: boolean): IPromiseAuthenticationContext;
+            static createAsync(authority: string, validateAuthority?: boolean): PromiseAuthenticationContext;
 
             /**
             * Acquires token using interactive flow if needed. It checks the cache to return existing result
@@ -191,7 +138,7 @@ declare namespace Microsoft {
             *
             * @returns {Promise} Promise either fulfilled with AuthenticationResult object or rejected with error
             */
-            acquireTokenAsync(resourceUrl: string, clientId: string, redirectUrl: string, userId?: string, extraQueryParameters?: string): IPromiseAuthenticationResult;
+            acquireTokenAsync(resourceUrl: string, clientId: string, redirectUrl: string, userId?: string, extraQueryParameters?: string): PromiseAuthenticationResult;
 
             /**
              * Acquires token WITHOUT using interactive flow. It checks the cache to return existing result
@@ -204,7 +151,7 @@ declare namespace Microsoft {
              *
              * @returns {Promise} Promise either fulfilled with AuthenticationResult object or rejected with error
              */
-            acquireTokenSilentAsync(resourceUrl: string, clientId: string, userId: string): IPromiseAuthenticationResult;
+            acquireTokenSilentAsync(resourceUrl: string, clientId: string, userId: string): PromiseAuthenticationResult;
 
         }
     }