diff --git a/types/nodecredstash/index.d.ts b/types/nodecredstash/index.d.ts
index d2489178a4..76375aac21 100644
--- a/types/nodecredstash/index.d.ts
+++ b/types/nodecredstash/index.d.ts
@@ -6,7 +6,7 @@
 /// <reference types="node"/>
 import * as AWS from 'aws-sdk';
 
-interface ICredstashConfig {
+interface CredstashConfig {
 	table?: string;
 	awsOpts?: AWS.KMS.ClientConfiguration;
 	dynamoOpts?: AWS.DynamoDB.ClientConfiguration;
@@ -14,32 +14,32 @@ interface ICredstashConfig {
 	kmsOpts?: AWS.KMS.ClientConfiguration;
 }
 
-interface ICredstashContext {
+interface CredstashContext {
 	[key: string]: string;
 }
 
-interface IPutSecretOptions {
+interface PutSecretOptions {
 	name: string;
 	secret: string;
-	context: ICredstashContext;
+	context: CredstashContext;
 	digest?: string;
 	version?: number;
 }
 
-interface ICredstash {
+interface Credstash {
 	getHighestVersion: (options: { name: string }) => Promise<AWS.DynamoDB.AttributeMap>;
 	incrementVersion: (options: { name: string }) => Promise<string>;
-	putSecret: (options: IPutSecretOptions) => Promise<AWS.DynamoDB.DocumentClient.PutItemOutput>;
-	decryptStash: (stash: { key: string; }, context?: ICredstashContext) => Promise<AWS.KMS.DecryptResponse>;
-	getAllVersions: (options: { name: string, context?: ICredstashContext, limit?: number }) => Promise<Array<{ version: string; secret: string }>>;
-	getSecret: (options: { name: string, context?: ICredstashContext, version?: number }) => Promise<string>;
-	deleteSecrets: (options: { name: string }) => Promise<Array<AWS.DynamoDB.DocumentClient.DeleteItemOutput>>;
+	putSecret: (options: PutSecretOptions) => Promise<AWS.DynamoDB.DocumentClient.PutItemOutput>;
+	decryptStash: (stash: { key: string; }, context?: CredstashContext) => Promise<AWS.KMS.DecryptResponse>;
+	getAllVersions: (options: { name: string, context?: CredstashContext, limit?: number }) => Promise<Array<{ version: string; secret: string }>>;
+	getSecret: (options: { name: string, context?: CredstashContext, version?: number }) => Promise<string>;
+	deleteSecrets: (options: { name: string }) => Promise<AWS.DynamoDB.DocumentClient.DeleteItemOutput[]>;
 	deleteSecret: (options: { name: string, version: number }) => Promise<AWS.DynamoDB.DocumentClient.DeleteItemOutput>;
 	listSecrets: () => Promise<string[]>;
-	getAllSecrets: (options: { version?: number, context?: ICredstashContext, startsWith?: string }) => Promise<{ [key: string]: string }>;
+	getAllSecrets: (options: { version?: number, context?: CredstashContext, startsWith?: string }) => Promise<{ [key: string]: string }>;
 	createDdbTable: () => Promise<void>;
 }
 
-declare function Credstash(config: ICredstashConfig): ICredstash;
+declare function Credstash(config: CredstashConfig): Credstash;
 
 export = Credstash;
diff --git a/types/nodecredstash/package.json b/types/nodecredstash/package.json
new file mode 100644
index 0000000000..0347abc684
--- /dev/null
+++ b/types/nodecredstash/package.json
@@ -0,0 +1,6 @@
+{
+    "dependencies": {
+        "aws-sdk": "^2.211.0"
+    },
+    "private": true
+}
diff --git a/types/nodecredstash/tsconfig.json b/types/nodecredstash/tsconfig.json
index da430c0182..ec4305243c 100644
--- a/types/nodecredstash/tsconfig.json
+++ b/types/nodecredstash/tsconfig.json
@@ -7,6 +7,7 @@
         "noImplicitAny": true,
         "noImplicitThis": true,
         "strictNullChecks": true,
+        "strictFunctionTypes": true,
         "baseUrl": "../",
         "typeRoots": [
             "../"