[BUG] typescript-fetch code does not compile because of Errors

Bug Report Checklist

• ALL Specs Have you provided a full/minimal spec to reproduce the issue?
• All Specs Have you validated the input using an OpenAPI validator (example)?
• Have you tested with the latest master to confirm the issue still exists?
• Have you searched for related issues/PRs?
• What's the actual output vs expected output?
• [Optional] Sponsorship to speed up the bug fix or feature request (example)

Description

typescript-fetch code does not compile because of Errors

openapi-generator version

"@openapitools/openapi-generator-cli": "^1.0.18-4.3.1",

and
"@openapitools/openapi-generator-cli": "^1.0.18-5.0.0-beta2",

"typescript": "^4.2.3",

OpenAPI declaration file content or url

any file

Generation Details

There are many bugs like

Error TS6133: 'InlineResponse2003ToJSON' is declared but its value is never read.

Steps to reproduce

openapi-generator generate -i openapi.yaml -g typescript-fetch -o ui/src/generated
tsc ui/src/generated/runtime.ts

Related issues/PRs

Suggest a fix

replace /* tslint:disable */ by // @ts-nocheck or add extra ts-nocheck line

diff --git a/modules/openapi-generator/src/main/resources/typescript-fetch/apis.mustache b/modules/openapi-generator/src/main/resources/typescript-fetch/apis.mustache
index 8466deb2853..3781155fd63 100644
--- a/modules/openapi-generator/src/main/resources/typescript-fetch/apis.mustache
+++ b/modules/openapi-generator/src/main/resources/typescript-fetch/apis.mustache
@@ -1,3 +1,4 @@
+// @ts-nocheck
 /* tslint:disable */
 /* eslint-disable */
 {{>licenseInfo}}
diff --git a/modules/openapi-generator/src/main/resources/typescript-fetch/models.mustache b/modules/openapi-generator/src/main/resources/typescript-fetch/models.mustache
index 20135a84425..e8c7db348c3 100644
--- a/modules/openapi-generator/src/main/resources/typescript-fetch/models.mustache
+++ b/modules/openapi-generator/src/main/resources/typescript-fetch/models.mustache
@@ -1,3 +1,4 @@
+// @ts-nocheck
 /* tslint:disable */
 /* eslint-disable */
 {{>licenseInfo}}
diff --git a/modules/openapi-generator/src/main/resources/typescript-fetch/runtime.mustache b/modules/openapi-generator/src/main/resources/typescript-fetch/runtime.mustache
index d0c29b93a75..ff219a869e5 100644
--- a/modules/openapi-generator/src/main/resources/typescript-fetch/runtime.mustache
+++ b/modules/openapi-generator/src/main/resources/typescript-fetch/runtime.mustache
@@ -1,3 +1,4 @@
+// @ts-nocheck
 /* tslint:disable */
 /* eslint-disable */
 {{>licenseInfo}}

Start with modules/openapi-generator/src/main/resources/typescript-fetch/apis.mustache, models.mustache, and runtime.mustache, then reproduce with the provided openapi-generator command and tsc ui/src/generated/runtime.ts. Check whether generated TypeScript still reports unused declarations such as InlineResponse2003ToJSON, and verify that the generated output compiles without those errors.