diff --git a/typescript/cognito-api-lambda/index.ts b/typescript/cognito-api-lambda/index.ts
index b8e6b1de4..414c20bac 100644
--- a/typescript/cognito-api-lambda/index.ts
+++ b/typescript/cognito-api-lambda/index.ts
@@ -1,7 +1,7 @@
 import { LambdaRestApi, CfnAuthorizer, LambdaIntegration, AuthorizationType } from '@aws-cdk/aws-apigateway';
 import { AssetCode, Function, Runtime } from '@aws-cdk/aws-lambda';
 import { App, Stack } from '@aws-cdk/core';
-import { UserPool, SignInType } from '@aws-cdk/aws-cognito'
+import { UserPool } from '@aws-cdk/aws-cognito'
 
 export class CognitoProtectedApi extends Stack {
   constructor(app: App, id: string) {
@@ -23,7 +23,9 @@ export class CognitoProtectedApi extends Stack {
 
     // Cognito User Pool with Email Sign-in Type.
     const userPool = new UserPool(this, 'userPool', {
-      signInType: SignInType.EMAIL
+      signInAliases: {
+        email: true
+      }
     })
 
     // Authorizer for the Hello World API that uses the
diff --git a/typescript/eks/cluster/index.ts b/typescript/eks/cluster/index.ts
index 41db96019..9c3601f58 100644
--- a/typescript/eks/cluster/index.ts
+++ b/typescript/eks/cluster/index.ts
@@ -29,7 +29,7 @@ class EKSCluster extends cdk.Stack {
       instanceType: new ec2.InstanceType('t3.medium'),
       machineImage: new eks.EksOptimizedImage({
         kubernetesVersion: '1.14',
-        nodeType: eks.NodeType.STANDARD  // wihtout this, incorrect SSM parameter for AMI is resolved
+        nodeType: eks.NodeType.STANDARD  // without this, incorrect SSM parameter for AMI is resolved
       }),
       updateType: autoscaling.UpdateType.ROLLING_UPDATE
     });
diff --git a/typescript/eks/cluster/tsconfig.json b/typescript/eks/cluster/tsconfig.json
index 544b446da..1a0b2eace 100644
--- a/typescript/eks/cluster/tsconfig.json
+++ b/typescript/eks/cluster/tsconfig.json
@@ -16,5 +16,9 @@
       "inlineSources": true,
       "experimentalDecorators": true,
       "strictPropertyInitialization":false
-  }
-}
\ No newline at end of file
+  },
+  "include": [ "**/*.ts" ],
+  "exclude": [
+    "**/*.d.ts"
+  ]
+}