diff --git a/types/eureka-js-client/eureka-js-client-tests.ts b/types/eureka-js-client/eureka-js-client-tests.ts
index a28a4d7a48..1eb2a510d5 100644
--- a/types/eureka-js-client/eureka-js-client-tests.ts
+++ b/types/eureka-js-client/eureka-js-client-tests.ts
@@ -1,8 +1,8 @@
 import { Eureka } from 'eureka-js-client';
 
-// example configuration 
+// example configuration
 let client = new Eureka({
-  // application instance information 
+  // application instance information
   instance: {
     app: 'jqservice',
     hostName: 'localhost',
@@ -14,8 +14,8 @@ let client = new Eureka({
     },
   },
   eureka: {
-    // eureka server host / port 
+    // eureka server host / port
     host: '192.168.99.100',
     port: 32768,
   }
-});
\ No newline at end of file
+});
diff --git a/types/eureka-js-client/index.d.ts b/types/eureka-js-client/index.d.ts
index d8fb19ac1f..36fcbc2624 100644
--- a/types/eureka-js-client/index.d.ts
+++ b/types/eureka-js-client/index.d.ts
@@ -3,78 +3,73 @@
 // Definitions by: Ilko Hoffmann <https://github.com/Schnillz>
 // Definitions: https://github.com/DefinitelyTyped/DefinitelyTyped
 
-export declare class Eureka {
+export class Eureka {
     constructor(config: EurekaClient.EurekaConfig)
     start(): void;
     stop(): void;
-    getInstancesByAppId(appId: string): Array<string>;
-    getInstancesByVipAddress(vidAddress: string): Array<string>;
+    getInstancesByAppId(appId: string): string[];
+    getInstancesByVipAddress(vidAddress: string): string [];
 }
 
-declare namespace EurekaClient {
-
+export namespace EurekaClient {
     type InstanceStatus = 'UP' | 'DOWN' | 'STARTING' | 'OUT_OF_SERVICE' | 'UNKNOWN';
     type ActionType = 'ADDED' | 'MODIFIED' | 'DELETED';
+    type DataCenterName = 'Netflix' | 'Amazon' | 'MyOwn';
 
     interface EurekaConfig {
-        instance: EurekaInstanceConfig,
-        eureka: EurekaClientConfig
+        instance: EurekaInstanceConfig;
+        eureka: EurekaClientConfig;
     }
     interface EurekaInstanceConfig {
-        app: string,
-        hostName: string,
-        ipAddr: string,
-        vipAddress: string,
-        dataCenterInfo: DataCenterInfo,
-        port?: number,
-        instanceId?: string,
-        appGroupName?: string,
-        sid?: string,
-        securePort?: PortWrapper,
-        homePageUrl?: string,
-        statusPageUrl?: string,
-        healthCheckUrl?: string,
-        secureHealthCheckUrl?: string,
-        secureVipAddress?: string,
-        countryId?: number,
-        status?: InstanceStatus,
-        overriddenstatus?: InstanceStatus,
-        leaseInfo?: LeaseInfo,
-        isCoordinatingDiscoveryServer?: boolean,
-        metadata?: Array<[string, string]>,
-        lastUpdatedTimestamp?: number,
-        lastDirtyTimestamp?: number,
-        actionType?: ActionType,
-        asgName?: string
+        app: string;
+        hostName: string;
+        ipAddr: string;
+        vipAddress: string;
+        dataCenterInfo: DataCenterInfo;
+        port?: number;
+        instanceId?: string;
+        appGroupName?: string;
+        sid?: string;
+        securePort?: PortWrapper;
+        homePageUrl?: string;
+        statusPageUrl?: string;
+        healthCheckUrl?: string;
+        secureHealthCheckUrl?: string;
+        secureVipAddress?: string;
+        countryId?: number;
+        status?: InstanceStatus;
+        overriddenstatus?: InstanceStatus;
+        leaseInfo?: LeaseInfo;
+        isCoordinatingDiscoveryServer?: boolean;
     }
     interface EurekaClientConfig {
-        host: string,
-        port: number,
-        heartbeatInterval?: number,
-        registryFetchInterval?: number,
-        maxRetries?: number,
-        requestRetryDelay?: number,
-        fetchRegistry?: boolean,
-        filterUpInstances?: boolean,
-        servicePath?: string,
-        ssl?: boolean,
-        useDns?: boolean,
-        preferSameZone?: boolean,
-        clusterRefreshInterval?: boolean,
-        fetchMetadata?: boolean,
-        registerWithEureka?: boolean,
-        useLocalMetadata?: boolean,
-        preferIpAddress?: boolean
+        host: string;
+        port: number;
+        heartbeatInterval?: number;
+        registryFetchInterval?: number;
+        maxRetries?: number;
+        requestRetryDelay?: number;
+        fetchRegistry?: boolean;
+        filterUpInstances?: boolean;
+        servicePath?: string;
+        ssl?: boolean;
+        useDns?: boolean;
+        preferSameZone?: boolean;
+        clusterRefreshInterval?: boolean;
+        fetchMetadata?: boolean;
+        registerWithEureka?: boolean;
+        useLocalMetadata?: boolean;
+        preferIpAddress?: boolean;
     }
     interface PortWrapper {
-        enabled: boolean,
-        port: number
+        enabled: boolean;
+        port: number;
     }
     interface LeaseInfo {
         renewalIntervalInSecs: number;
         durationInSecs: number;
     }
     interface DataCenterInfo {
-        name: 'Netflix' | 'Amazon' | 'MyOwn';
+        name: DataCenterName;
     }
-}
\ No newline at end of file
+}
diff --git a/types/eureka-js-client/tslint.json b/types/eureka-js-client/tslint.json
new file mode 100644
index 0000000000..2221e40e4a
--- /dev/null
+++ b/types/eureka-js-client/tslint.json
@@ -0,0 +1 @@
+{ "extends": "../tslint.json" }
\ No newline at end of file