diff --git a/modules/openapi-generator/src/main/resources/typescript/api/api.mustache b/modules/openapi-generator/src/main/resources/typescript/api/api.mustache
index 6de0ab056da..a28b911bd11 100644
--- a/modules/openapi-generator/src/main/resources/typescript/api/api.mustache
+++ b/modules/openapi-generator/src/main/resources/typescript/api/api.mustache
@@ -1,5 +1,5 @@
 // TODO: better import syntax?
-import {BaseAPIRequestFactory, RequiredError} from './baseapi{{extensionForDeno}}';
+import {BaseAPIRequestFactory, RequiredError, COLLECTION_FORMATS} from './baseapi{{extensionForDeno}}';
 import {Configuration} from '../configuration{{extensionForDeno}}';
 import {RequestContext, HttpMethod, ResponseContext, HttpFile} from '../http/http{{extensionForDeno}}';
 {{#platforms}}
diff --git a/samples/client/others/typescript/builds/with-unique-items/apis/DefaultApi.ts b/samples/client/others/typescript/builds/with-unique-items/apis/DefaultApi.ts
index 8a5468e0d62..537b79f0789 100644
--- a/samples/client/others/typescript/builds/with-unique-items/apis/DefaultApi.ts
+++ b/samples/client/others/typescript/builds/with-unique-items/apis/DefaultApi.ts
@@ -1,5 +1,5 @@
 // TODO: better import syntax?
-import {BaseAPIRequestFactory, RequiredError} from './baseapi';
+import {BaseAPIRequestFactory, RequiredError, COLLECTION_FORMATS} from './baseapi';
 import {Configuration} from '../configuration';
 import {RequestContext, HttpMethod, ResponseContext, HttpFile} from '../http/http';
 import {ObjectSerializer} from '../models/ObjectSerializer';
diff --git a/samples/openapi3/client/petstore/typescript/builds/browser/apis/PetApi.ts b/samples/openapi3/client/petstore/typescript/builds/browser/apis/PetApi.ts
index 273352e4f6d..514291812d2 100644
--- a/samples/openapi3/client/petstore/typescript/builds/browser/apis/PetApi.ts
+++ b/samples/openapi3/client/petstore/typescript/builds/browser/apis/PetApi.ts
@@ -1,5 +1,5 @@
 // TODO: better import syntax?
-import {BaseAPIRequestFactory, RequiredError} from './baseapi';
+import {BaseAPIRequestFactory, RequiredError, COLLECTION_FORMATS} from './baseapi';
 import {Configuration} from '../configuration';
 import {RequestContext, HttpMethod, ResponseContext, HttpFile} from '../http/http';
 import {ObjectSerializer} from '../models/ObjectSerializer';
diff --git a/samples/openapi3/client/petstore/typescript/builds/browser/apis/StoreApi.ts b/samples/openapi3/client/petstore/typescript/builds/browser/apis/StoreApi.ts
index 1eead292274..c60c1d87081 100644
--- a/samples/openapi3/client/petstore/typescript/builds/browser/apis/StoreApi.ts
+++ b/samples/openapi3/client/petstore/typescript/builds/browser/apis/StoreApi.ts
@@ -1,5 +1,5 @@
 // TODO: better import syntax?
-import {BaseAPIRequestFactory, RequiredError} from './baseapi';
+import {BaseAPIRequestFactory, RequiredError, COLLECTION_FORMATS} from './baseapi';
 import {Configuration} from '../configuration';
 import {RequestContext, HttpMethod, ResponseContext, HttpFile} from '../http/http';
 import {ObjectSerializer} from '../models/ObjectSerializer';
diff --git a/samples/openapi3/client/petstore/typescript/builds/browser/apis/UserApi.ts b/samples/openapi3/client/petstore/typescript/builds/browser/apis/UserApi.ts
index 9784393c7a4..0331c7117d5 100644
--- a/samples/openapi3/client/petstore/typescript/builds/browser/apis/UserApi.ts
+++ b/samples/openapi3/client/petstore/typescript/builds/browser/apis/UserApi.ts
@@ -1,5 +1,5 @@
 // TODO: better import syntax?
-import {BaseAPIRequestFactory, RequiredError} from './baseapi';
+import {BaseAPIRequestFactory, RequiredError, COLLECTION_FORMATS} from './baseapi';
 import {Configuration} from '../configuration';
 import {RequestContext, HttpMethod, ResponseContext, HttpFile} from '../http/http';
 import {ObjectSerializer} from '../models/ObjectSerializer';
diff --git a/samples/openapi3/client/petstore/typescript/builds/composed-schemas/apis/DefaultApi.ts b/samples/openapi3/client/petstore/typescript/builds/composed-schemas/apis/DefaultApi.ts
index 616be727ebb..9f7c82dfb4a 100644
--- a/samples/openapi3/client/petstore/typescript/builds/composed-schemas/apis/DefaultApi.ts
+++ b/samples/openapi3/client/petstore/typescript/builds/composed-schemas/apis/DefaultApi.ts
@@ -1,5 +1,5 @@
 // TODO: better import syntax?
-import {BaseAPIRequestFactory, RequiredError} from './baseapi';
+import {BaseAPIRequestFactory, RequiredError, COLLECTION_FORMATS} from './baseapi';
 import {Configuration} from '../configuration';
 import {RequestContext, HttpMethod, ResponseContext, HttpFile} from '../http/http';
 import {ObjectSerializer} from '../models/ObjectSerializer';
diff --git a/samples/openapi3/client/petstore/typescript/builds/default/apis/PetApi.ts b/samples/openapi3/client/petstore/typescript/builds/default/apis/PetApi.ts
index 3dec522f6ee..5b3d37fe35a 100644
--- a/samples/openapi3/client/petstore/typescript/builds/default/apis/PetApi.ts
+++ b/samples/openapi3/client/petstore/typescript/builds/default/apis/PetApi.ts
@@ -1,5 +1,5 @@
 // TODO: better import syntax?
-import {BaseAPIRequestFactory, RequiredError} from './baseapi';
+import {BaseAPIRequestFactory, RequiredError, COLLECTION_FORMATS} from './baseapi';
 import {Configuration} from '../configuration';
 import {RequestContext, HttpMethod, ResponseContext, HttpFile} from '../http/http';
 import * as FormData from "form-data";
diff --git a/samples/openapi3/client/petstore/typescript/builds/default/apis/StoreApi.ts b/samples/openapi3/client/petstore/typescript/builds/default/apis/StoreApi.ts
index e26ee9a00b1..2682c0fc70a 100644
--- a/samples/openapi3/client/petstore/typescript/builds/default/apis/StoreApi.ts
+++ b/samples/openapi3/client/petstore/typescript/builds/default/apis/StoreApi.ts
@@ -1,5 +1,5 @@
 // TODO: better import syntax?
-import {BaseAPIRequestFactory, RequiredError} from './baseapi';
+import {BaseAPIRequestFactory, RequiredError, COLLECTION_FORMATS} from './baseapi';
 import {Configuration} from '../configuration';
 import {RequestContext, HttpMethod, ResponseContext, HttpFile} from '../http/http';
 import * as FormData from "form-data";
diff --git a/samples/openapi3/client/petstore/typescript/builds/default/apis/UserApi.ts b/samples/openapi3/client/petstore/typescript/builds/default/apis/UserApi.ts
index ede979aad46..352b499b378 100644
--- a/samples/openapi3/client/petstore/typescript/builds/default/apis/UserApi.ts
+++ b/samples/openapi3/client/petstore/typescript/builds/default/apis/UserApi.ts
@@ -1,5 +1,5 @@
 // TODO: better import syntax?
-import {BaseAPIRequestFactory, RequiredError} from './baseapi';
+import {BaseAPIRequestFactory, RequiredError, COLLECTION_FORMATS} from './baseapi';
 import {Configuration} from '../configuration';
 import {RequestContext, HttpMethod, ResponseContext, HttpFile} from '../http/http';
 import * as FormData from "form-data";
diff --git a/samples/openapi3/client/petstore/typescript/builds/deno/apis/PetApi.ts b/samples/openapi3/client/petstore/typescript/builds/deno/apis/PetApi.ts
index 1e06ca4f61b..8c2c2bf98b7 100644
--- a/samples/openapi3/client/petstore/typescript/builds/deno/apis/PetApi.ts
+++ b/samples/openapi3/client/petstore/typescript/builds/deno/apis/PetApi.ts
@@ -1,5 +1,5 @@
 // TODO: better import syntax?
-import {BaseAPIRequestFactory, RequiredError} from './baseapi.ts';
+import {BaseAPIRequestFactory, RequiredError, COLLECTION_FORMATS} from './baseapi.ts';
 import {Configuration} from '../configuration.ts';
 import {RequestContext, HttpMethod, ResponseContext, HttpFile} from '../http/http.ts';
 import {ObjectSerializer} from '../models/ObjectSerializer.ts';
diff --git a/samples/openapi3/client/petstore/typescript/builds/deno/apis/StoreApi.ts b/samples/openapi3/client/petstore/typescript/builds/deno/apis/StoreApi.ts
index 95dfda9bf22..b391bc0bad6 100644
--- a/samples/openapi3/client/petstore/typescript/builds/deno/apis/StoreApi.ts
+++ b/samples/openapi3/client/petstore/typescript/builds/deno/apis/StoreApi.ts
@@ -1,5 +1,5 @@
 // TODO: better import syntax?
-import {BaseAPIRequestFactory, RequiredError} from './baseapi.ts';
+import {BaseAPIRequestFactory, RequiredError, COLLECTION_FORMATS} from './baseapi.ts';
 import {Configuration} from '../configuration.ts';
 import {RequestContext, HttpMethod, ResponseContext, HttpFile} from '../http/http.ts';
 import {ObjectSerializer} from '../models/ObjectSerializer.ts';
diff --git a/samples/openapi3/client/petstore/typescript/builds/deno/apis/UserApi.ts b/samples/openapi3/client/petstore/typescript/builds/deno/apis/UserApi.ts
index 6b8aedbb87a..cf96436616e 100644
--- a/samples/openapi3/client/petstore/typescript/builds/deno/apis/UserApi.ts
+++ b/samples/openapi3/client/petstore/typescript/builds/deno/apis/UserApi.ts
@@ -1,5 +1,5 @@
 // TODO: better import syntax?
-import {BaseAPIRequestFactory, RequiredError} from './baseapi.ts';
+import {BaseAPIRequestFactory, RequiredError, COLLECTION_FORMATS} from './baseapi.ts';
 import {Configuration} from '../configuration.ts';
 import {RequestContext, HttpMethod, ResponseContext, HttpFile} from '../http/http.ts';
 import {ObjectSerializer} from '../models/ObjectSerializer.ts';
diff --git a/samples/openapi3/client/petstore/typescript/builds/inversify/apis/PetApi.ts b/samples/openapi3/client/petstore/typescript/builds/inversify/apis/PetApi.ts
index cb12d2bdd80..93928166fcd 100644
--- a/samples/openapi3/client/petstore/typescript/builds/inversify/apis/PetApi.ts
+++ b/samples/openapi3/client/petstore/typescript/builds/inversify/apis/PetApi.ts
@@ -1,5 +1,5 @@
 // TODO: better import syntax?
-import {BaseAPIRequestFactory, RequiredError} from './baseapi';
+import {BaseAPIRequestFactory, RequiredError, COLLECTION_FORMATS} from './baseapi';
 import {Configuration} from '../configuration';
 import {RequestContext, HttpMethod, ResponseContext, HttpFile} from '../http/http';
 import * as FormData from "form-data";
diff --git a/samples/openapi3/client/petstore/typescript/builds/inversify/apis/StoreApi.ts b/samples/openapi3/client/petstore/typescript/builds/inversify/apis/StoreApi.ts
index b3273a793f2..8c67bb3abe4 100644
--- a/samples/openapi3/client/petstore/typescript/builds/inversify/apis/StoreApi.ts
+++ b/samples/openapi3/client/petstore/typescript/builds/inversify/apis/StoreApi.ts
@@ -1,5 +1,5 @@
 // TODO: better import syntax?
-import {BaseAPIRequestFactory, RequiredError} from './baseapi';
+import {BaseAPIRequestFactory, RequiredError, COLLECTION_FORMATS} from './baseapi';
 import {Configuration} from '../configuration';
 import {RequestContext, HttpMethod, ResponseContext, HttpFile} from '../http/http';
 import * as FormData from "form-data";
diff --git a/samples/openapi3/client/petstore/typescript/builds/inversify/apis/UserApi.ts b/samples/openapi3/client/petstore/typescript/builds/inversify/apis/UserApi.ts
index 71c9ce26b5a..9f81f5e77f0 100644
--- a/samples/openapi3/client/petstore/typescript/builds/inversify/apis/UserApi.ts
+++ b/samples/openapi3/client/petstore/typescript/builds/inversify/apis/UserApi.ts
@@ -1,5 +1,5 @@
 // TODO: better import syntax?
-import {BaseAPIRequestFactory, RequiredError} from './baseapi';
+import {BaseAPIRequestFactory, RequiredError, COLLECTION_FORMATS} from './baseapi';
 import {Configuration} from '../configuration';
 import {RequestContext, HttpMethod, ResponseContext, HttpFile} from '../http/http';
 import * as FormData from "form-data";
diff --git a/samples/openapi3/client/petstore/typescript/builds/jquery/apis/PetApi.ts b/samples/openapi3/client/petstore/typescript/builds/jquery/apis/PetApi.ts
index 273352e4f6d..514291812d2 100644
--- a/samples/openapi3/client/petstore/typescript/builds/jquery/apis/PetApi.ts
+++ b/samples/openapi3/client/petstore/typescript/builds/jquery/apis/PetApi.ts
@@ -1,5 +1,5 @@
 // TODO: better import syntax?
-import {BaseAPIRequestFactory, RequiredError} from './baseapi';
+import {BaseAPIRequestFactory, RequiredError, COLLECTION_FORMATS} from './baseapi';
 import {Configuration} from '../configuration';
 import {RequestContext, HttpMethod, ResponseContext, HttpFile} from '../http/http';
 import {ObjectSerializer} from '../models/ObjectSerializer';
diff --git a/samples/openapi3/client/petstore/typescript/builds/jquery/apis/StoreApi.ts b/samples/openapi3/client/petstore/typescript/builds/jquery/apis/StoreApi.ts
index 1eead292274..c60c1d87081 100644
--- a/samples/openapi3/client/petstore/typescript/builds/jquery/apis/StoreApi.ts
+++ b/samples/openapi3/client/petstore/typescript/builds/jquery/apis/StoreApi.ts
@@ -1,5 +1,5 @@
 // TODO: better import syntax?
-import {BaseAPIRequestFactory, RequiredError} from './baseapi';
+import {BaseAPIRequestFactory, RequiredError, COLLECTION_FORMATS} from './baseapi';
 import {Configuration} from '../configuration';
 import {RequestContext, HttpMethod, ResponseContext, HttpFile} from '../http/http';
 import {ObjectSerializer} from '../models/ObjectSerializer';
diff --git a/samples/openapi3/client/petstore/typescript/builds/jquery/apis/UserApi.ts b/samples/openapi3/client/petstore/typescript/builds/jquery/apis/UserApi.ts
index 9784393c7a4..0331c7117d5 100644
--- a/samples/openapi3/client/petstore/typescript/builds/jquery/apis/UserApi.ts
+++ b/samples/openapi3/client/petstore/typescript/builds/jquery/apis/UserApi.ts
@@ -1,5 +1,5 @@
 // TODO: better import syntax?
-import {BaseAPIRequestFactory, RequiredError} from './baseapi';
+import {BaseAPIRequestFactory, RequiredError, COLLECTION_FORMATS} from './baseapi';
 import {Configuration} from '../configuration';
 import {RequestContext, HttpMethod, ResponseContext, HttpFile} from '../http/http';
 import {ObjectSerializer} from '../models/ObjectSerializer';
diff --git a/samples/openapi3/client/petstore/typescript/builds/object_params/apis/PetApi.ts b/samples/openapi3/client/petstore/typescript/builds/object_params/apis/PetApi.ts
index 3dec522f6ee..5b3d37fe35a 100644
--- a/samples/openapi3/client/petstore/typescript/builds/object_params/apis/PetApi.ts
+++ b/samples/openapi3/client/petstore/typescript/builds/object_params/apis/PetApi.ts
@@ -1,5 +1,5 @@
 // TODO: better import syntax?
-import {BaseAPIRequestFactory, RequiredError} from './baseapi';
+import {BaseAPIRequestFactory, RequiredError, COLLECTION_FORMATS} from './baseapi';
 import {Configuration} from '../configuration';
 import {RequestContext, HttpMethod, ResponseContext, HttpFile} from '../http/http';
 import * as FormData from "form-data";
diff --git a/samples/openapi3/client/petstore/typescript/builds/object_params/apis/StoreApi.ts b/samples/openapi3/client/petstore/typescript/builds/object_params/apis/StoreApi.ts
index e26ee9a00b1..2682c0fc70a 100644
--- a/samples/openapi3/client/petstore/typescript/builds/object_params/apis/StoreApi.ts
+++ b/samples/openapi3/client/petstore/typescript/builds/object_params/apis/StoreApi.ts
@@ -1,5 +1,5 @@
 // TODO: better import syntax?
-import {BaseAPIRequestFactory, RequiredError} from './baseapi';
+import {BaseAPIRequestFactory, RequiredError, COLLECTION_FORMATS} from './baseapi';
 import {Configuration} from '../configuration';
 import {RequestContext, HttpMethod, ResponseContext, HttpFile} from '../http/http';
 import * as FormData from "form-data";
diff --git a/samples/openapi3/client/petstore/typescript/builds/object_params/apis/UserApi.ts b/samples/openapi3/client/petstore/typescript/builds/object_params/apis/UserApi.ts
index ede979aad46..352b499b378 100644
--- a/samples/openapi3/client/petstore/typescript/builds/object_params/apis/UserApi.ts
+++ b/samples/openapi3/client/petstore/typescript/builds/object_params/apis/UserApi.ts
@@ -1,5 +1,5 @@
 // TODO: better import syntax?
-import {BaseAPIRequestFactory, RequiredError} from './baseapi';
+import {BaseAPIRequestFactory, RequiredError, COLLECTION_FORMATS} from './baseapi';
 import {Configuration} from '../configuration';
 import {RequestContext, HttpMethod, ResponseContext, HttpFile} from '../http/http';
 import * as FormData from "form-data";