diff --git a/modules/swagger-codegen/src/main/java/io/swagger/codegen/DefaultCodegen.java b/modules/swagger-codegen/src/main/java/io/swagger/codegen/DefaultCodegen.java
index 46b31091bc7..f1daba360f4 100644
--- a/modules/swagger-codegen/src/main/java/io/swagger/codegen/DefaultCodegen.java
+++ b/modules/swagger-codegen/src/main/java/io/swagger/codegen/DefaultCodegen.java
@@ -2508,7 +2508,12 @@ public class DefaultCodegen {
             // set boolean flag (e.g. isString)
             setParameterBooleanFlagWithCodegenProperty(p, cp);
 
-            p.dataType = cp.datatype;
+            String parameterDataType = this.getParameterDataType(param, property);
+            if (parameterDataType != null) {
+                p.dataType = parameterDataType;
+            } else {
+                p.dataType = cp.datatype;
+            }
             p.dataFormat = cp.dataFormat;
             if(cp.isEnum) {
                 p.datatypeWithEnum = cp.datatypeWithEnum;
@@ -2719,6 +2724,18 @@ public class DefaultCodegen {
         return p;
     }
 
+   /**
+    * Returns the data type of a parameter.
+    * Returns null by default to use the CodegenProperty.datatype value
+    * @param parameter
+    * @param property
+    * @return
+    */
+   protected String getParameterDataType(Parameter parameter, Property property) {
+        return null;
+   }
+
+
     public boolean isDataTypeBinary(String dataType) {
         if (dataType != null) {
             return dataType.toLowerCase().startsWith("byte");
diff --git a/modules/swagger-codegen/src/main/java/io/swagger/codegen/languages/AbstractTypeScriptClientCodegen.java b/modules/swagger-codegen/src/main/java/io/swagger/codegen/languages/AbstractTypeScriptClientCodegen.java
index 273cdb5583e..d676f4a342c 100644
--- a/modules/swagger-codegen/src/main/java/io/swagger/codegen/languages/AbstractTypeScriptClientCodegen.java
+++ b/modules/swagger-codegen/src/main/java/io/swagger/codegen/languages/AbstractTypeScriptClientCodegen.java
@@ -1,14 +1,10 @@
 package io.swagger.codegen.languages;
 
+import io.swagger.models.parameters.Parameter;
 import org.apache.commons.lang3.StringUtils;
 
 import java.io.File;
-import java.util.Arrays;
-import java.util.HashMap;
-import java.util.HashSet;
-import java.util.List;
-import java.util.Map;
-import java.util.TreeSet;
+import java.util.*;
 
 import io.swagger.codegen.CliOption;
 import io.swagger.codegen.CodegenConfig;
@@ -234,6 +230,101 @@ public abstract class AbstractTypeScriptClientCodegen extends DefaultCodegen imp
         return super.getTypeDeclaration(p);
     }
 
+
+    @Override
+    protected String getParameterDataType(Parameter parameter, Property p) {
+        // handle enums of various data types
+        Property inner;
+        if (p instanceof ArrayProperty) {
+            ArrayProperty mp1 = (ArrayProperty) p;
+            inner = mp1.getItems();
+            return this.getSwaggerType(p) + "<" + this.getParameterDataType(parameter, inner) + ">";
+        } else if (p instanceof MapProperty) {
+            MapProperty mp = (MapProperty) p;
+            inner = mp.getAdditionalProperties();
+            return "{ [key: string]: " + this.getParameterDataType(parameter, inner) + "; }";
+        } else if (p instanceof StringProperty) {
+            // Handle string enums
+            StringProperty sp = (StringProperty) p;
+            if (sp.getEnum() != null) {
+                return enumValuesToEnumTypeUnion(sp.getEnum(), "string");
+            }
+        } else if (p instanceof IntegerProperty) {
+            // Handle integer enums
+            IntegerProperty sp = (IntegerProperty) p;
+            if (sp.getEnum() != null) {
+                return numericEnumValuesToEnumTypeUnion(new ArrayList<Number>(sp.getEnum()));
+            }
+        } else if (p instanceof LongProperty) {
+            // Handle long enums
+            LongProperty sp = (LongProperty) p;
+            if (sp.getEnum() != null) {
+                return numericEnumValuesToEnumTypeUnion(new ArrayList<Number>(sp.getEnum()));
+            }
+        } else if (p instanceof DoubleProperty) {
+            // Handle double enums
+            DoubleProperty sp = (DoubleProperty) p;
+            if (sp.getEnum() != null) {
+                return numericEnumValuesToEnumTypeUnion(new ArrayList<Number>(sp.getEnum()));
+            }
+        } else if (p instanceof FloatProperty) {
+            // Handle float enums
+            FloatProperty sp = (FloatProperty) p;
+            if (sp.getEnum() != null) {
+                return numericEnumValuesToEnumTypeUnion(new ArrayList<Number>(sp.getEnum()));
+            }
+        } else if (p instanceof DateProperty) {
+            // Handle date enums
+            DateProperty sp = (DateProperty) p;
+            if (sp.getEnum() != null) {
+                return enumValuesToEnumTypeUnion(sp.getEnum(), "string");
+            }
+        } else if (p instanceof DateTimeProperty) {
+            // Handle datetime enums
+            DateTimeProperty sp = (DateTimeProperty) p;
+            if (sp.getEnum() != null) {
+                return enumValuesToEnumTypeUnion(sp.getEnum(), "string");
+            }
+        }
+        return this.getTypeDeclaration(p);
+    }
+
+    /**
+     * Converts a list of strings to a literal union for representing enum values as a type.
+     * Example output: 'available' | 'pending' | 'sold'
+     *
+     * @param values list of allowed enum values
+     * @param dataType either "string" or "number"
+     * @return
+     */
+    protected String enumValuesToEnumTypeUnion(List<String> values, String dataType) {
+        StringBuilder b = new StringBuilder();
+        boolean isFirst = true;
+        for (String value: values) {
+            if (!isFirst) {
+                b.append(" | ");
+            }
+            b.append(toEnumValue(value.toString(), dataType));
+            isFirst = false;
+        }
+        return b.toString();
+    }
+
+    /**
+     * Converts a list of numbers to a literal union for representing enum values as a type.
+     * Example output: 3 | 9 | 55
+     *
+     * @param values
+     * @return
+     */
+    protected String numericEnumValuesToEnumTypeUnion(List<Number> values) {
+        List<String> stringValues = new ArrayList<>();
+        for (Number value: values) {
+            stringValues.add(value.toString());
+        }
+        return enumValuesToEnumTypeUnion(stringValues, "number");
+    }
+
     @Override
     public String toDefaultValue(Property p) {
         if (p instanceof StringProperty) {
diff --git a/modules/swagger-codegen/src/main/java/io/swagger/codegen/languages/TypeScriptAngularClientCodegen.java b/modules/swagger-codegen/src/main/java/io/swagger/codegen/languages/TypeScriptAngularClientCodegen.java
index a529711a5cf..0ca5848f7ff 100644
--- a/modules/swagger-codegen/src/main/java/io/swagger/codegen/languages/TypeScriptAngularClientCodegen.java
+++ b/modules/swagger-codegen/src/main/java/io/swagger/codegen/languages/TypeScriptAngularClientCodegen.java
@@ -17,12 +17,7 @@ import io.swagger.codegen.CodegenOperation;
 import io.swagger.codegen.SupportingFile;
 import io.swagger.codegen.utils.SemVer;
 import io.swagger.models.ModelImpl;
-import io.swagger.models.properties.ArrayProperty;
-import io.swagger.models.properties.BooleanProperty;
-import io.swagger.models.properties.FileProperty;
-import io.swagger.models.properties.MapProperty;
-import io.swagger.models.properties.ObjectProperty;
-import io.swagger.models.properties.Property;
+import io.swagger.models.properties.*;
 
 public class TypeScriptAngularClientCodegen extends AbstractTypeScriptClientCodegen {
     private static final SimpleDateFormat SNAPSHOT_SUFFIX_FORMAT = new SimpleDateFormat("yyyyMMddHHmm");
@@ -161,16 +156,7 @@ public class TypeScriptAngularClientCodegen extends AbstractTypeScriptClientCode
 
     @Override
     public String getTypeDeclaration(Property p) {
-        Property inner;
-        if (p instanceof ArrayProperty) {
-            ArrayProperty mp1 = (ArrayProperty) p;
-            inner = mp1.getItems();
-            return this.getSwaggerType(p) + "<" + this.getTypeDeclaration(inner) + ">";
-        } else if (p instanceof MapProperty) {
-            MapProperty mp = (MapProperty) p;
-            inner = mp.getAdditionalProperties();
-            return "{ [key: string]: " + this.getTypeDeclaration(inner) + "; }";
-        } else if (p instanceof FileProperty) {
+        if (p instanceof FileProperty) {
             return "Blob";
         } else if (p instanceof ObjectProperty) {
             return "any";
@@ -179,6 +165,7 @@ public class TypeScriptAngularClientCodegen extends AbstractTypeScriptClientCode
         }
     }
 
+
     @Override
     public String getSwaggerType(Property p) {
         String swaggerType = super.getSwaggerType(p);
diff --git a/samples/client/petstore/typescript-angular-v2/default/.swagger-codegen/VERSION b/samples/client/petstore/typescript-angular-v2/default/.swagger-codegen/VERSION
index 50794f17f1a..2bf1c1ccf36 100644
--- a/samples/client/petstore/typescript-angular-v2/default/.swagger-codegen/VERSION
+++ b/samples/client/petstore/typescript-angular-v2/default/.swagger-codegen/VERSION
@@ -1 +1 @@
-2.3.1-SNAPSHOT
\ No newline at end of file
+2.3.1
diff --git a/samples/client/petstore/typescript-angular-v2/default/api/pet.service.ts b/samples/client/petstore/typescript-angular-v2/default/api/pet.service.ts
index 3f5b8fd227e..30354b57437 100644
--- a/samples/client/petstore/typescript-angular-v2/default/api/pet.service.ts
+++ b/samples/client/petstore/typescript-angular-v2/default/api/pet.service.ts
@@ -96,7 +96,7 @@ export class PetService {
      * @summary Finds Pets by status
      * @param status Status values that need to be considered for filter
      */
-    public findPetsByStatus(status: Array<string>, extraHttpRequestParams?: RequestOptionsArgs): Observable<Array<Pet>> {
+    public findPetsByStatus(status: Array<'available' | 'pending' | 'sold'>, extraHttpRequestParams?: RequestOptionsArgs): Observable<Array<Pet>> {
         return this.findPetsByStatusWithHttpInfo(status, extraHttpRequestParams)
             .map((response: Response) => {
                 if (response.status === 204) {
@@ -305,7 +305,7 @@ export class PetService {
      * @param status Status values that need to be considered for filter
      
      */
-    public findPetsByStatusWithHttpInfo(status: Array<string>, extraHttpRequestParams?: RequestOptionsArgs): Observable<Response> {
+    public findPetsByStatusWithHttpInfo(status: Array<'available' | 'pending' | 'sold'>, extraHttpRequestParams?: RequestOptionsArgs): Observable<Response> {
         if (status === null || status === undefined) {
             throw new Error('Required parameter status was null or undefined when calling findPetsByStatus.');
         }
diff --git a/samples/client/petstore/typescript-angular-v2/npm/.swagger-codegen/VERSION b/samples/client/petstore/typescript-angular-v2/npm/.swagger-codegen/VERSION
index 50794f17f1a..2bf1c1ccf36 100644
--- a/samples/client/petstore/typescript-angular-v2/npm/.swagger-codegen/VERSION
+++ b/samples/client/petstore/typescript-angular-v2/npm/.swagger-codegen/VERSION
@@ -1 +1 @@
-2.3.1-SNAPSHOT
\ No newline at end of file
+2.3.1
diff --git a/samples/client/petstore/typescript-angular-v2/npm/api/pet.service.ts b/samples/client/petstore/typescript-angular-v2/npm/api/pet.service.ts
index 3f5b8fd227e..30354b57437 100644
--- a/samples/client/petstore/typescript-angular-v2/npm/api/pet.service.ts
+++ b/samples/client/petstore/typescript-angular-v2/npm/api/pet.service.ts
@@ -96,7 +96,7 @@ export class PetService {
      * @summary Finds Pets by status
      * @param status Status values that need to be considered for filter
      */
-    public findPetsByStatus(status: Array<string>, extraHttpRequestParams?: RequestOptionsArgs): Observable<Array<Pet>> {
+    public findPetsByStatus(status: Array<'available' | 'pending' | 'sold'>, extraHttpRequestParams?: RequestOptionsArgs): Observable<Array<Pet>> {
         return this.findPetsByStatusWithHttpInfo(status, extraHttpRequestParams)
             .map((response: Response) => {
                 if (response.status === 204) {
@@ -305,7 +305,7 @@ export class PetService {
      * @param status Status values that need to be considered for filter
      
      */
-    public findPetsByStatusWithHttpInfo(status: Array<string>, extraHttpRequestParams?: RequestOptionsArgs): Observable<Response> {
+    public findPetsByStatusWithHttpInfo(status: Array<'available' | 'pending' | 'sold'>, extraHttpRequestParams?: RequestOptionsArgs): Observable<Response> {
         if (status === null || status === undefined) {
             throw new Error('Required parameter status was null or undefined when calling findPetsByStatus.');
         }
diff --git a/samples/client/petstore/typescript-angular-v2/with-interfaces/.swagger-codegen/VERSION b/samples/client/petstore/typescript-angular-v2/with-interfaces/.swagger-codegen/VERSION
index 50794f17f1a..2bf1c1ccf36 100644
--- a/samples/client/petstore/typescript-angular-v2/with-interfaces/.swagger-codegen/VERSION
+++ b/samples/client/petstore/typescript-angular-v2/with-interfaces/.swagger-codegen/VERSION
@@ -1 +1 @@
-2.3.1-SNAPSHOT
\ No newline at end of file
+2.3.1
diff --git a/samples/client/petstore/typescript-angular-v2/with-interfaces/api/pet.service.ts b/samples/client/petstore/typescript-angular-v2/with-interfaces/api/pet.service.ts
index 5f5d730060c..565e6d3dbe4 100644
--- a/samples/client/petstore/typescript-angular-v2/with-interfaces/api/pet.service.ts
+++ b/samples/client/petstore/typescript-angular-v2/with-interfaces/api/pet.service.ts
@@ -97,7 +97,7 @@ export class PetService implements PetServiceInterface {
      * @summary Finds Pets by status
      * @param status Status values that need to be considered for filter
      */
-    public findPetsByStatus(status: Array<string>, extraHttpRequestParams?: RequestOptionsArgs): Observable<Array<Pet>> {
+    public findPetsByStatus(status: Array<'available' | 'pending' | 'sold'>, extraHttpRequestParams?: RequestOptionsArgs): Observable<Array<Pet>> {
         return this.findPetsByStatusWithHttpInfo(status, extraHttpRequestParams)
             .map((response: Response) => {
                 if (response.status === 204) {
@@ -306,7 +306,7 @@ export class PetService implements PetServiceInterface {
      * @param status Status values that need to be considered for filter
      
      */
-    public findPetsByStatusWithHttpInfo(status: Array<string>, extraHttpRequestParams?: RequestOptionsArgs): Observable<Response> {
+    public findPetsByStatusWithHttpInfo(status: Array<'available' | 'pending' | 'sold'>, extraHttpRequestParams?: RequestOptionsArgs): Observable<Response> {
         if (status === null || status === undefined) {
             throw new Error('Required parameter status was null or undefined when calling findPetsByStatus.');
         }
diff --git a/samples/client/petstore/typescript-angular-v2/with-interfaces/api/pet.serviceInterface.ts b/samples/client/petstore/typescript-angular-v2/with-interfaces/api/pet.serviceInterface.ts
index 968ed61c846..160b06ffaca 100644
--- a/samples/client/petstore/typescript-angular-v2/with-interfaces/api/pet.serviceInterface.ts
+++ b/samples/client/petstore/typescript-angular-v2/with-interfaces/api/pet.serviceInterface.ts
@@ -42,7 +42,7 @@ export interface PetServiceInterface {
     * Multiple status values can be provided with comma separated strings
     * @param status Status values that need to be considered for filter
     */
-    findPetsByStatus(status: Array<string>, extraHttpRequestParams?: any): Observable<Array<Pet>>;
+    findPetsByStatus(status: Array<'available' | 'pending' | 'sold'>, extraHttpRequestParams?: any): Observable<Array<Pet>>;
 
     /**
     * Finds Pets by tags
diff --git a/samples/client/petstore/typescript-angular-v4.3/npm/.swagger-codegen/VERSION b/samples/client/petstore/typescript-angular-v4.3/npm/.swagger-codegen/VERSION
index 50794f17f1a..2bf1c1ccf36 100644
--- a/samples/client/petstore/typescript-angular-v4.3/npm/.swagger-codegen/VERSION
+++ b/samples/client/petstore/typescript-angular-v4.3/npm/.swagger-codegen/VERSION
@@ -1 +1 @@
-2.3.1-SNAPSHOT
\ No newline at end of file
+2.3.1
diff --git a/samples/client/petstore/typescript-angular-v4.3/npm/api/pet.service.ts b/samples/client/petstore/typescript-angular-v4.3/npm/api/pet.service.ts
index 40fb7221bd3..5dc987751bc 100644
--- a/samples/client/petstore/typescript-angular-v4.3/npm/api/pet.service.ts
+++ b/samples/client/petstore/typescript-angular-v4.3/npm/api/pet.service.ts
@@ -173,10 +173,10 @@ export class PetService {
      * @param observe set whether or not to return the data Observable as the body, response or events. defaults to returning the body.
      * @param reportProgress flag to report request and response progress.
      */
-    public findPetsByStatus(status: Array<string>, observe?: 'body', reportProgress?: boolean): Observable<Array<Pet>>;
-    public findPetsByStatus(status: Array<string>, observe?: 'response', reportProgress?: boolean): Observable<HttpResponse<Array<Pet>>>;
-    public findPetsByStatus(status: Array<string>, observe?: 'events', reportProgress?: boolean): Observable<HttpEvent<Array<Pet>>>;
-    public findPetsByStatus(status: Array<string>, observe: any = 'body', reportProgress: boolean = false ): Observable<any> {
+    public findPetsByStatus(status: Array<'available' | 'pending' | 'sold'>, observe?: 'body', reportProgress?: boolean): Observable<Array<Pet>>;
+    public findPetsByStatus(status: Array<'available' | 'pending' | 'sold'>, observe?: 'response', reportProgress?: boolean): Observable<HttpResponse<Array<Pet>>>;
+    public findPetsByStatus(status: Array<'available' | 'pending' | 'sold'>, observe?: 'events', reportProgress?: boolean): Observable<HttpEvent<Array<Pet>>>;
+    public findPetsByStatus(status: Array<'available' | 'pending' | 'sold'>, observe: any = 'body', reportProgress: boolean = false ): Observable<any> {
         if (status === null || status === undefined) {
             throw new Error('Required parameter status was null or undefined when calling findPetsByStatus.');
         }
diff --git a/samples/client/petstore/typescript-angular-v4/npm/.swagger-codegen/VERSION b/samples/client/petstore/typescript-angular-v4/npm/.swagger-codegen/VERSION
index 50794f17f1a..2bf1c1ccf36 100644
--- a/samples/client/petstore/typescript-angular-v4/npm/.swagger-codegen/VERSION
+++ b/samples/client/petstore/typescript-angular-v4/npm/.swagger-codegen/VERSION
@@ -1 +1 @@
-2.3.1-SNAPSHOT
\ No newline at end of file
+2.3.1
diff --git a/samples/client/petstore/typescript-angular-v4/npm/api/pet.service.ts b/samples/client/petstore/typescript-angular-v4/npm/api/pet.service.ts
index 3f5b8fd227e..30354b57437 100644
--- a/samples/client/petstore/typescript-angular-v4/npm/api/pet.service.ts
+++ b/samples/client/petstore/typescript-angular-v4/npm/api/pet.service.ts
@@ -96,7 +96,7 @@ export class PetService {
      * @summary Finds Pets by status
      * @param status Status values that need to be considered for filter
      */
-    public findPetsByStatus(status: Array<string>, extraHttpRequestParams?: RequestOptionsArgs): Observable<Array<Pet>> {
+    public findPetsByStatus(status: Array<'available' | 'pending' | 'sold'>, extraHttpRequestParams?: RequestOptionsArgs): Observable<Array<Pet>> {
         return this.findPetsByStatusWithHttpInfo(status, extraHttpRequestParams)
             .map((response: Response) => {
                 if (response.status === 204) {
@@ -305,7 +305,7 @@ export class PetService {
      * @param status Status values that need to be considered for filter
      
      */
-    public findPetsByStatusWithHttpInfo(status: Array<string>, extraHttpRequestParams?: RequestOptionsArgs): Observable<Response> {
+    public findPetsByStatusWithHttpInfo(status: Array<'available' | 'pending' | 'sold'>, extraHttpRequestParams?: RequestOptionsArgs): Observable<Response> {
         if (status === null || status === undefined) {
             throw new Error('Required parameter status was null or undefined when calling findPetsByStatus.');
         }
diff --git a/samples/client/petstore/typescript-angularjs/.swagger-codegen/VERSION b/samples/client/petstore/typescript-angularjs/.swagger-codegen/VERSION
index f9f7450d135..a6254504e40 100644
--- a/samples/client/petstore/typescript-angularjs/.swagger-codegen/VERSION
+++ b/samples/client/petstore/typescript-angularjs/.swagger-codegen/VERSION
@@ -1 +1 @@
-2.3.0-SNAPSHOT
\ No newline at end of file
+2.3.1
\ No newline at end of file
diff --git a/samples/client/petstore/typescript-angularjs/api/PetApi.ts b/samples/client/petstore/typescript-angularjs/api/PetApi.ts
index 1db89920e73..8991c0b3862 100644
--- a/samples/client/petstore/typescript-angularjs/api/PetApi.ts
+++ b/samples/client/petstore/typescript-angularjs/api/PetApi.ts
@@ -45,7 +45,7 @@ export class PetApi {
             method: 'POST',
             url: localVarPath,
             data: body,
-                        params: queryParameters,
+            params: queryParameters,
             headers: headerParams
         };
 
@@ -77,7 +77,7 @@ export class PetApi {
         let httpRequestParams: ng.IRequestConfig = {
             method: 'DELETE',
             url: localVarPath,
-                                    params: queryParameters,
+            params: queryParameters,
             headers: headerParams
         };
 
@@ -92,7 +92,7 @@ export class PetApi {
      * @summary Finds Pets by status
      * @param status Status values that need to be considered for filter
      */
-    public findPetsByStatus (status: Array<string>, extraHttpRequestParams?: any ) : ng.IHttpPromise<Array<models.Pet>> {
+    public findPetsByStatus (status: Array<'available' | 'pending' | 'sold'>, extraHttpRequestParams?: any ) : ng.IHttpPromise<Array<models.Pet>> {
         const localVarPath = this.basePath + '/pet/findByStatus';
 
         let queryParameters: any = {};
@@ -109,7 +109,7 @@ export class PetApi {
         let httpRequestParams: ng.IRequestConfig = {
             method: 'GET',
             url: localVarPath,
-                                    params: queryParameters,
+            params: queryParameters,
             headers: headerParams
         };
 
@@ -141,7 +141,7 @@ export class PetApi {
         let httpRequestParams: ng.IRequestConfig = {
             method: 'GET',
             url: localVarPath,
-                                    params: queryParameters,
+            params: queryParameters,
             headers: headerParams
         };
 
@@ -170,7 +170,7 @@ export class PetApi {
         let httpRequestParams: ng.IRequestConfig = {
             method: 'GET',
             url: localVarPath,
-                                    params: queryParameters,
+            params: queryParameters,
             headers: headerParams
         };
 
@@ -199,7 +199,7 @@ export class PetApi {
             method: 'PUT',
             url: localVarPath,
             data: body,
-                        params: queryParameters,
+            params: queryParameters,
             headers: headerParams
         };
 
@@ -238,7 +238,7 @@ export class PetApi {
         let httpRequestParams: ng.IRequestConfig = {
             method: 'POST',
             url: localVarPath,
-                        data: this.$httpParamSerializer(formParams),
+            data: this.$httpParamSerializer(formParams),
             params: queryParameters,
             headers: headerParams
         };
@@ -278,7 +278,7 @@ export class PetApi {
         let httpRequestParams: ng.IRequestConfig = {
             method: 'POST',
             url: localVarPath,
-                        data: this.$httpParamSerializer(formParams),
+            data: this.$httpParamSerializer(formParams),
             params: queryParameters,
             headers: headerParams
         };
diff --git a/samples/client/petstore/typescript-angularjs/api/StoreApi.ts b/samples/client/petstore/typescript-angularjs/api/StoreApi.ts
index 1d26cfa0312..6ac29c56660 100644
--- a/samples/client/petstore/typescript-angularjs/api/StoreApi.ts
+++ b/samples/client/petstore/typescript-angularjs/api/StoreApi.ts
@@ -45,7 +45,7 @@ export class StoreApi {
         let httpRequestParams: ng.IRequestConfig = {
             method: 'DELETE',
             url: localVarPath,
-                                    params: queryParameters,
+            params: queryParameters,
             headers: headerParams
         };
 
@@ -67,7 +67,7 @@ export class StoreApi {
         let httpRequestParams: ng.IRequestConfig = {
             method: 'GET',
             url: localVarPath,
-                                    params: queryParameters,
+            params: queryParameters,
             headers: headerParams
         };
 
@@ -96,7 +96,7 @@ export class StoreApi {
         let httpRequestParams: ng.IRequestConfig = {
             method: 'GET',
             url: localVarPath,
-                                    params: queryParameters,
+            params: queryParameters,
             headers: headerParams
         };
 
@@ -125,7 +125,7 @@ export class StoreApi {
             method: 'POST',
             url: localVarPath,
             data: body,
-                        params: queryParameters,
+            params: queryParameters,
             headers: headerParams
         };
 
diff --git a/samples/client/petstore/typescript-angularjs/api/UserApi.ts b/samples/client/petstore/typescript-angularjs/api/UserApi.ts
index 091ad8b5dca..d846cf25afc 100644
--- a/samples/client/petstore/typescript-angularjs/api/UserApi.ts
+++ b/samples/client/petstore/typescript-angularjs/api/UserApi.ts
@@ -45,7 +45,7 @@ export class UserApi {
             method: 'POST',
             url: localVarPath,
             data: body,
-                        params: queryParameters,
+            params: queryParameters,
             headers: headerParams
         };
 
@@ -74,7 +74,7 @@ export class UserApi {
             method: 'POST',
             url: localVarPath,
             data: body,
-                        params: queryParameters,
+            params: queryParameters,
             headers: headerParams
         };
 
@@ -103,7 +103,7 @@ export class UserApi {
             method: 'POST',
             url: localVarPath,
             data: body,
-                        params: queryParameters,
+            params: queryParameters,
             headers: headerParams
         };
 
@@ -132,7 +132,7 @@ export class UserApi {
         let httpRequestParams: ng.IRequestConfig = {
             method: 'DELETE',
             url: localVarPath,
-                                    params: queryParameters,
+            params: queryParameters,
             headers: headerParams
         };
 
@@ -161,7 +161,7 @@ export class UserApi {
         let httpRequestParams: ng.IRequestConfig = {
             method: 'GET',
             url: localVarPath,
-                                    params: queryParameters,
+            params: queryParameters,
             headers: headerParams
         };
 
@@ -203,7 +203,7 @@ export class UserApi {
         let httpRequestParams: ng.IRequestConfig = {
             method: 'GET',
             url: localVarPath,
-                                    params: queryParameters,
+            params: queryParameters,
             headers: headerParams
         };
 
@@ -225,7 +225,7 @@ export class UserApi {
         let httpRequestParams: ng.IRequestConfig = {
             method: 'GET',
             url: localVarPath,
-                                    params: queryParameters,
+            params: queryParameters,
             headers: headerParams
         };
 
@@ -261,7 +261,7 @@ export class UserApi {
             method: 'PUT',
             url: localVarPath,
             data: body,
-                        params: queryParameters,
+            params: queryParameters,
             headers: headerParams
         };
 
diff --git a/samples/client/petstore/typescript-aurelia/default/.swagger-codegen/VERSION b/samples/client/petstore/typescript-aurelia/default/.swagger-codegen/VERSION
index f9f7450d135..a6254504e40 100644
--- a/samples/client/petstore/typescript-aurelia/default/.swagger-codegen/VERSION
+++ b/samples/client/petstore/typescript-aurelia/default/.swagger-codegen/VERSION
@@ -1 +1 @@
-2.3.0-SNAPSHOT
\ No newline at end of file
+2.3.1
\ No newline at end of file
diff --git a/samples/client/petstore/typescript-aurelia/default/PetApi.ts b/samples/client/petstore/typescript-aurelia/default/PetApi.ts
index 2d0cf2d84f1..446d3171854 100644
--- a/samples/client/petstore/typescript-aurelia/default/PetApi.ts
+++ b/samples/client/petstore/typescript-aurelia/default/PetApi.ts
@@ -19,6 +19,7 @@ import {
   any,
   Pet,
   ApiResponse,
+  Array&lt;&#39;available&#39; | &#39;pending&#39; | &#39;sold&#39;&gt;,
 } from './models';
 
 /**
@@ -40,7 +41,7 @@ export interface IDeletePetParams {
  * findPetsByStatus - parameters interface
  */
 export interface IFindPetsByStatusParams {
-  status: Array<string>;
+  status: Array<'available' | 'pending' | 'sold'>;
 }
 
 /**
diff --git a/samples/client/petstore/typescript-fetch/builds/default/.swagger-codegen/VERSION b/samples/client/petstore/typescript-fetch/builds/default/.swagger-codegen/VERSION
index f9f7450d135..a6254504e40 100644
--- a/samples/client/petstore/typescript-fetch/builds/default/.swagger-codegen/VERSION
+++ b/samples/client/petstore/typescript-fetch/builds/default/.swagger-codegen/VERSION
@@ -1 +1 @@
-2.3.0-SNAPSHOT
\ No newline at end of file
+2.3.1
\ No newline at end of file
diff --git a/samples/client/petstore/typescript-fetch/builds/default/api.ts b/samples/client/petstore/typescript-fetch/builds/default/api.ts
index 74b5bd4f72e..72e705621fa 100644
--- a/samples/client/petstore/typescript-fetch/builds/default/api.ts
+++ b/samples/client/petstore/typescript-fetch/builds/default/api.ts
@@ -414,11 +414,11 @@ export const PetApiFetchParamCreator = function (configuration?: Configuration)
         /**
          * Multiple status values can be provided with comma separated strings
          * @summary Finds Pets by status
-         * @param {Array&lt;string&gt;} status Status values that need to be considered for filter
+         * @param {Array&lt;&#39;available&#39; | &#39;pending&#39; | &#39;sold&#39;&gt;} status Status values that need to be considered for filter
          * @param {*} [options] Override http request option.
          * @throws {RequiredError}
          */
-        findPetsByStatus(status: Array<string>, options: any = {}): FetchArgs {
+        findPetsByStatus(status: Array<'available' | 'pending' | 'sold'>, options: any = {}): FetchArgs {
             // verify required parameter 'status' is not null or undefined
             if (status === null || status === undefined) {
                 throw new RequiredError('status','Required parameter status was null or undefined when calling findPetsByStatus.');
@@ -726,11 +726,11 @@ export const PetApiFp = function(configuration?: Configuration) {
         /**
          * Multiple status values can be provided with comma separated strings
          * @summary Finds Pets by status
-         * @param {Array&lt;string&gt;} status Status values that need to be considered for filter
+         * @param {Array&lt;&#39;available&#39; | &#39;pending&#39; | &#39;sold&#39;&gt;} status Status values that need to be considered for filter
          * @param {*} [options] Override http request option.
          * @throws {RequiredError}
          */
-        findPetsByStatus(status: Array<string>, options?: any): (fetch?: FetchAPI, basePath?: string) => Promise<Array<Pet>> {
+        findPetsByStatus(status: Array<'available' | 'pending' | 'sold'>, options?: any): (fetch?: FetchAPI, basePath?: string) => Promise<Array<Pet>> {
             const localVarFetchArgs = PetApiFetchParamCreator(configuration).findPetsByStatus(status, options);
             return (fetch: FetchAPI = portableFetch, basePath: string = BASE_PATH) => {
                 return fetch(basePath + localVarFetchArgs.url, localVarFetchArgs.options).then((response) => {
@@ -874,11 +874,11 @@ export const PetApiFactory = function (configuration?: Configuration, fetch?: Fe
         /**
          * Multiple status values can be provided with comma separated strings
          * @summary Finds Pets by status
-         * @param {Array&lt;string&gt;} status Status values that need to be considered for filter
+         * @param {Array&lt;&#39;available&#39; | &#39;pending&#39; | &#39;sold&#39;&gt;} status Status values that need to be considered for filter
          * @param {*} [options] Override http request option.
          * @throws {RequiredError}
          */
-        findPetsByStatus(status: Array<string>, options?: any) {
+        findPetsByStatus(status: Array<'available' | 'pending' | 'sold'>, options?: any) {
             return PetApiFp(configuration).findPetsByStatus(status, options)(fetch, basePath);
         },
         /**
@@ -978,7 +978,7 @@ export class PetApi extends BaseAPI {
      * @throws {RequiredError}
      * @memberof PetApi
      */
-    public findPetsByStatus(status: Array<string>, options?: any) {
+    public findPetsByStatus(status: Array<'available' | 'pending' | 'sold'>, options?: any) {
         return PetApiFp(this.configuration).findPetsByStatus(status, options)(this.fetch, this.basePath);
     }
 
diff --git a/samples/client/petstore/typescript-fetch/builds/es6-target/.swagger-codegen/VERSION b/samples/client/petstore/typescript-fetch/builds/es6-target/.swagger-codegen/VERSION
index f9f7450d135..a6254504e40 100644
--- a/samples/client/petstore/typescript-fetch/builds/es6-target/.swagger-codegen/VERSION
+++ b/samples/client/petstore/typescript-fetch/builds/es6-target/.swagger-codegen/VERSION
@@ -1 +1 @@
-2.3.0-SNAPSHOT
\ No newline at end of file
+2.3.1
\ No newline at end of file
diff --git a/samples/client/petstore/typescript-fetch/builds/es6-target/api.ts b/samples/client/petstore/typescript-fetch/builds/es6-target/api.ts
index 74b5bd4f72e..72e705621fa 100644
--- a/samples/client/petstore/typescript-fetch/builds/es6-target/api.ts
+++ b/samples/client/petstore/typescript-fetch/builds/es6-target/api.ts
@@ -414,11 +414,11 @@ export const PetApiFetchParamCreator = function (configuration?: Configuration)
         /**
          * Multiple status values can be provided with comma separated strings
          * @summary Finds Pets by status
-         * @param {Array&lt;string&gt;} status Status values that need to be considered for filter
+         * @param {Array&lt;&#39;available&#39; | &#39;pending&#39; | &#39;sold&#39;&gt;} status Status values that need to be considered for filter
          * @param {*} [options] Override http request option.
          * @throws {RequiredError}
          */
-        findPetsByStatus(status: Array<string>, options: any = {}): FetchArgs {
+        findPetsByStatus(status: Array<'available' | 'pending' | 'sold'>, options: any = {}): FetchArgs {
             // verify required parameter 'status' is not null or undefined
             if (status === null || status === undefined) {
                 throw new RequiredError('status','Required parameter status was null or undefined when calling findPetsByStatus.');
@@ -726,11 +726,11 @@ export const PetApiFp = function(configuration?: Configuration) {
         /**
          * Multiple status values can be provided with comma separated strings
          * @summary Finds Pets by status
-         * @param {Array&lt;string&gt;} status Status values that need to be considered for filter
+         * @param {Array&lt;&#39;available&#39; | &#39;pending&#39; | &#39;sold&#39;&gt;} status Status values that need to be considered for filter
          * @param {*} [options] Override http request option.
          * @throws {RequiredError}
          */
-        findPetsByStatus(status: Array<string>, options?: any): (fetch?: FetchAPI, basePath?: string) => Promise<Array<Pet>> {
+        findPetsByStatus(status: Array<'available' | 'pending' | 'sold'>, options?: any): (fetch?: FetchAPI, basePath?: string) => Promise<Array<Pet>> {
             const localVarFetchArgs = PetApiFetchParamCreator(configuration).findPetsByStatus(status, options);
             return (fetch: FetchAPI = portableFetch, basePath: string = BASE_PATH) => {
                 return fetch(basePath + localVarFetchArgs.url, localVarFetchArgs.options).then((response) => {
@@ -874,11 +874,11 @@ export const PetApiFactory = function (configuration?: Configuration, fetch?: Fe
         /**
          * Multiple status values can be provided with comma separated strings
          * @summary Finds Pets by status
-         * @param {Array&lt;string&gt;} status Status values that need to be considered for filter
+         * @param {Array&lt;&#39;available&#39; | &#39;pending&#39; | &#39;sold&#39;&gt;} status Status values that need to be considered for filter
          * @param {*} [options] Override http request option.
          * @throws {RequiredError}
          */
-        findPetsByStatus(status: Array<string>, options?: any) {
+        findPetsByStatus(status: Array<'available' | 'pending' | 'sold'>, options?: any) {
             return PetApiFp(configuration).findPetsByStatus(status, options)(fetch, basePath);
         },
         /**
@@ -978,7 +978,7 @@ export class PetApi extends BaseAPI {
      * @throws {RequiredError}
      * @memberof PetApi
      */
-    public findPetsByStatus(status: Array<string>, options?: any) {
+    public findPetsByStatus(status: Array<'available' | 'pending' | 'sold'>, options?: any) {
         return PetApiFp(this.configuration).findPetsByStatus(status, options)(this.fetch, this.basePath);
     }
 
diff --git a/samples/client/petstore/typescript-fetch/builds/with-npm-version/.swagger-codegen/VERSION b/samples/client/petstore/typescript-fetch/builds/with-npm-version/.swagger-codegen/VERSION
index f9f7450d135..a6254504e40 100644
--- a/samples/client/petstore/typescript-fetch/builds/with-npm-version/.swagger-codegen/VERSION
+++ b/samples/client/petstore/typescript-fetch/builds/with-npm-version/.swagger-codegen/VERSION
@@ -1 +1 @@
-2.3.0-SNAPSHOT
\ No newline at end of file
+2.3.1
\ No newline at end of file
diff --git a/samples/client/petstore/typescript-fetch/builds/with-npm-version/api.ts b/samples/client/petstore/typescript-fetch/builds/with-npm-version/api.ts
index 74b5bd4f72e..72e705621fa 100644
--- a/samples/client/petstore/typescript-fetch/builds/with-npm-version/api.ts
+++ b/samples/client/petstore/typescript-fetch/builds/with-npm-version/api.ts
@@ -414,11 +414,11 @@ export const PetApiFetchParamCreator = function (configuration?: Configuration)
         /**
          * Multiple status values can be provided with comma separated strings
          * @summary Finds Pets by status
-         * @param {Array&lt;string&gt;} status Status values that need to be considered for filter
+         * @param {Array&lt;&#39;available&#39; | &#39;pending&#39; | &#39;sold&#39;&gt;} status Status values that need to be considered for filter
          * @param {*} [options] Override http request option.
          * @throws {RequiredError}
          */
-        findPetsByStatus(status: Array<string>, options: any = {}): FetchArgs {
+        findPetsByStatus(status: Array<'available' | 'pending' | 'sold'>, options: any = {}): FetchArgs {
             // verify required parameter 'status' is not null or undefined
             if (status === null || status === undefined) {
                 throw new RequiredError('status','Required parameter status was null or undefined when calling findPetsByStatus.');
@@ -726,11 +726,11 @@ export const PetApiFp = function(configuration?: Configuration) {
         /**
          * Multiple status values can be provided with comma separated strings
          * @summary Finds Pets by status
-         * @param {Array&lt;string&gt;} status Status values that need to be considered for filter
+         * @param {Array&lt;&#39;available&#39; | &#39;pending&#39; | &#39;sold&#39;&gt;} status Status values that need to be considered for filter
          * @param {*} [options] Override http request option.
          * @throws {RequiredError}
          */
-        findPetsByStatus(status: Array<string>, options?: any): (fetch?: FetchAPI, basePath?: string) => Promise<Array<Pet>> {
+        findPetsByStatus(status: Array<'available' | 'pending' | 'sold'>, options?: any): (fetch?: FetchAPI, basePath?: string) => Promise<Array<Pet>> {
             const localVarFetchArgs = PetApiFetchParamCreator(configuration).findPetsByStatus(status, options);
             return (fetch: FetchAPI = portableFetch, basePath: string = BASE_PATH) => {
                 return fetch(basePath + localVarFetchArgs.url, localVarFetchArgs.options).then((response) => {
@@ -874,11 +874,11 @@ export const PetApiFactory = function (configuration?: Configuration, fetch?: Fe
         /**
          * Multiple status values can be provided with comma separated strings
          * @summary Finds Pets by status
-         * @param {Array&lt;string&gt;} status Status values that need to be considered for filter
+         * @param {Array&lt;&#39;available&#39; | &#39;pending&#39; | &#39;sold&#39;&gt;} status Status values that need to be considered for filter
          * @param {*} [options] Override http request option.
          * @throws {RequiredError}
          */
-        findPetsByStatus(status: Array<string>, options?: any) {
+        findPetsByStatus(status: Array<'available' | 'pending' | 'sold'>, options?: any) {
             return PetApiFp(configuration).findPetsByStatus(status, options)(fetch, basePath);
         },
         /**
@@ -978,7 +978,7 @@ export class PetApi extends BaseAPI {
      * @throws {RequiredError}
      * @memberof PetApi
      */
-    public findPetsByStatus(status: Array<string>, options?: any) {
+    public findPetsByStatus(status: Array<'available' | 'pending' | 'sold'>, options?: any) {
         return PetApiFp(this.configuration).findPetsByStatus(status, options)(this.fetch, this.basePath);
     }
 
diff --git a/samples/client/petstore/typescript-jquery/default/.swagger-codegen/VERSION b/samples/client/petstore/typescript-jquery/default/.swagger-codegen/VERSION
index f9f7450d135..a6254504e40 100644
--- a/samples/client/petstore/typescript-jquery/default/.swagger-codegen/VERSION
+++ b/samples/client/petstore/typescript-jquery/default/.swagger-codegen/VERSION
@@ -1 +1 @@
-2.3.0-SNAPSHOT
\ No newline at end of file
+2.3.1
\ No newline at end of file
diff --git a/samples/client/petstore/typescript-jquery/default/api/PetApi.ts b/samples/client/petstore/typescript-jquery/default/api/PetApi.ts
index 7d1ab010c49..68203071fd8 100644
--- a/samples/client/petstore/typescript-jquery/default/api/PetApi.ts
+++ b/samples/client/petstore/typescript-jquery/default/api/PetApi.ts
@@ -191,7 +191,7 @@ export class PetApi {
      * @summary Finds Pets by status
      * @param status Status values that need to be considered for filter
      */
-    public findPetsByStatus(status: Array<string>, extraJQueryAjaxSettings?: JQueryAjaxSettings): JQueryPromise<{ response: JQueryXHR; body: Array<models.Pet>;  }> {
+    public findPetsByStatus(status: Array<'available' | 'pending' | 'sold'>, extraJQueryAjaxSettings?: JQueryAjaxSettings): JQueryPromise<{ response: JQueryXHR; body: Array<models.Pet>;  }> {
         let localVarPath = this.basePath + '/pet/findByStatus';
 
         let queryParameters: any = {};
diff --git a/samples/client/petstore/typescript-jquery/npm/.swagger-codegen/VERSION b/samples/client/petstore/typescript-jquery/npm/.swagger-codegen/VERSION
index f9f7450d135..a6254504e40 100644
--- a/samples/client/petstore/typescript-jquery/npm/.swagger-codegen/VERSION
+++ b/samples/client/petstore/typescript-jquery/npm/.swagger-codegen/VERSION
@@ -1 +1 @@
-2.3.0-SNAPSHOT
\ No newline at end of file
+2.3.1
\ No newline at end of file
diff --git a/samples/client/petstore/typescript-jquery/npm/README.md b/samples/client/petstore/typescript-jquery/npm/README.md
index 6b1105e1d49..112a6835205 100644
--- a/samples/client/petstore/typescript-jquery/npm/README.md
+++ b/samples/client/petstore/typescript-jquery/npm/README.md
@@ -1,4 +1,4 @@
-## @swagger/jquery-typescript-petstore@0.0.1
+## @swagger/angular2-typescript-petstore@0.0.1
 
 This generator creates TypeScript/JavaScript client that utilizes [jQuery](https://jquery.com/). The generated Node module can be used in the following environments:
 
@@ -36,7 +36,7 @@ navigate to the folder of your consuming project and run one of the following co
 _published:_
 
 ```
-npm install @swagger/jquery-typescript-petstore@0.0.1 --save
+npm install @swagger/angular2-typescript-petstore@0.0.1 --save
 ```
 
 _unPublished (not recommended):_
diff --git a/samples/client/petstore/typescript-jquery/npm/api/PetApi.ts b/samples/client/petstore/typescript-jquery/npm/api/PetApi.ts
index 7d1ab010c49..68203071fd8 100644
--- a/samples/client/petstore/typescript-jquery/npm/api/PetApi.ts
+++ b/samples/client/petstore/typescript-jquery/npm/api/PetApi.ts
@@ -191,7 +191,7 @@ export class PetApi {
      * @summary Finds Pets by status
      * @param status Status values that need to be considered for filter
      */
-    public findPetsByStatus(status: Array<string>, extraJQueryAjaxSettings?: JQueryAjaxSettings): JQueryPromise<{ response: JQueryXHR; body: Array<models.Pet>;  }> {
+    public findPetsByStatus(status: Array<'available' | 'pending' | 'sold'>, extraJQueryAjaxSettings?: JQueryAjaxSettings): JQueryPromise<{ response: JQueryXHR; body: Array<models.Pet>;  }> {
         let localVarPath = this.basePath + '/pet/findByStatus';
 
         let queryParameters: any = {};
diff --git a/samples/client/petstore/typescript-jquery/npm/package.json b/samples/client/petstore/typescript-jquery/npm/package.json
index 2e3360574b8..e55912ffa06 100644
--- a/samples/client/petstore/typescript-jquery/npm/package.json
+++ b/samples/client/petstore/typescript-jquery/npm/package.json
@@ -1,7 +1,7 @@
 {
-    "name": "@swagger/jquery-typescript-petstore",
+    "name": "@swagger/angular2-typescript-petstore",
     "version": "0.0.1",
-    "description": "JQuery client for @swagger/jquery-typescript-petstore",
+    "description": "JQuery client for @swagger/angular2-typescript-petstore",
     "main": "api.js",
     "scripts": {
         "build": "tsc"
diff --git a/samples/client/petstore/typescript-node/default/.swagger-codegen/VERSION b/samples/client/petstore/typescript-node/default/.swagger-codegen/VERSION
index f9f7450d135..a6254504e40 100644
--- a/samples/client/petstore/typescript-node/default/.swagger-codegen/VERSION
+++ b/samples/client/petstore/typescript-node/default/.swagger-codegen/VERSION
@@ -1 +1 @@
-2.3.0-SNAPSHOT
\ No newline at end of file
+2.3.1
\ No newline at end of file
diff --git a/samples/client/petstore/typescript-node/default/api.ts b/samples/client/petstore/typescript-node/default/api.ts
index bd7f39968cc..1e75275a066 100644
--- a/samples/client/petstore/typescript-node/default/api.ts
+++ b/samples/client/petstore/typescript-node/default/api.ts
@@ -636,7 +636,7 @@ export class PetApi {
      * @summary Finds Pets by status
      * @param status Status values that need to be considered for filter
      */
-    public findPetsByStatus (status: Array<string>) : Promise<{ response: http.ClientResponse; body: Array<Pet>;  }> {
+    public findPetsByStatus (status: Array<'available' | 'pending' | 'sold'>) : Promise<{ response: http.ClientResponse; body: Array<Pet>;  }> {
         const localVarPath = this.basePath + '/pet/findByStatus';
         let localVarQueryParameters: any = {};
         let localVarHeaderParams: any = (<any>Object).assign({}, this.defaultHeaders);
@@ -648,7 +648,7 @@ export class PetApi {
         }
 
         if (status !== undefined) {
-            localVarQueryParameters['status'] = ObjectSerializer.serialize(status, "Array<string>");
+            localVarQueryParameters['status'] = ObjectSerializer.serialize(status, "Array<'available' | 'pending' | 'sold'>");
         }
 
 
diff --git a/samples/client/petstore/typescript-node/npm/.swagger-codegen/VERSION b/samples/client/petstore/typescript-node/npm/.swagger-codegen/VERSION
index f9f7450d135..a6254504e40 100644
--- a/samples/client/petstore/typescript-node/npm/.swagger-codegen/VERSION
+++ b/samples/client/petstore/typescript-node/npm/.swagger-codegen/VERSION
@@ -1 +1 @@
-2.3.0-SNAPSHOT
\ No newline at end of file
+2.3.1
\ No newline at end of file
diff --git a/samples/client/petstore/typescript-node/npm/api.ts b/samples/client/petstore/typescript-node/npm/api.ts
index bd7f39968cc..1e75275a066 100644
--- a/samples/client/petstore/typescript-node/npm/api.ts
+++ b/samples/client/petstore/typescript-node/npm/api.ts
@@ -636,7 +636,7 @@ export class PetApi {
      * @summary Finds Pets by status
      * @param status Status values that need to be considered for filter
      */
-    public findPetsByStatus (status: Array<string>) : Promise<{ response: http.ClientResponse; body: Array<Pet>;  }> {
+    public findPetsByStatus (status: Array<'available' | 'pending' | 'sold'>) : Promise<{ response: http.ClientResponse; body: Array<Pet>;  }> {
         const localVarPath = this.basePath + '/pet/findByStatus';
         let localVarQueryParameters: any = {};
         let localVarHeaderParams: any = (<any>Object).assign({}, this.defaultHeaders);
@@ -648,7 +648,7 @@ export class PetApi {
         }
 
         if (status !== undefined) {
-            localVarQueryParameters['status'] = ObjectSerializer.serialize(status, "Array<string>");
+            localVarQueryParameters['status'] = ObjectSerializer.serialize(status, "Array<'available' | 'pending' | 'sold'>");
         }