diff --git a/.github/workflows/samples-typescript-client.yaml b/.github/workflows/samples-typescript-client.yaml
new file mode 100644
index 000000000000..2aee47a85e1c
--- /dev/null
+++ b/.github/workflows/samples-typescript-client.yaml
@@ -0,0 +1,140 @@
+name: Samples TS clients
+
+on:
+  push:
+    paths:
+      - samples/client/others/typescript-angular/**
+      # comment out angular released before Nov 2023
+      #- samples/client/petstore/typescript-angular-v12-provided-in-root/**
+      #- samples/client/petstore/typescript-angular-v13-provided-in-root/**
+      #- samples/client/petstore/typescript-angular-v14-provided-in-root/**
+      #- samples/client/petstore/typescript-angular-v15-provided-in-root/**
+      #- samples/client/petstore/typescript-angular-v16-provided-in-root/**
+      # comment out below as there's no pom.xml
+      #- samples/client/petstore/typescript-angular-v17-provided-in-root/**
+      #- samples/client/petstore/typescript-angular-v18-provided-in-root/**
+      #- samples/client/petstore/typescript-angular-v19-provided-in-root/**
+      - samples/openapi3/client/petstore/typescript/builds/default/**
+      # comment out due to build failure
+      #- samples/openapi3/client/petstore/typescript/tests/default/**
+      - samples/openapi3/client/petstore/typescript/builds/jquery/**
+      # comment out due to build failure
+      #- samples/openapi3/client/petstore/typescript/tests/jquery/**
+      - samples/openapi3/client/petstore/typescript/builds/object_params/**
+      # comment out due to build failure
+      #- samples/openapi3/client/petstore/typescript/tests/object_params/**
+      #- samples/openapi3/client/petstore/typescript/builds/inversify/**
+      #- samples/openapi3/client/petstore/typescript/tests/inversify/**
+      #- samples/openapi3/client/petstore/typescript/tests/deno/**
+      - samples/openapi3/client/petstore/typescript/builds/browser/**
+      # comment out due to build failure
+      #- samples/openapi3/client/petstore/typescript/tests/browser/**
+      #- samples/openapi3/client/petstore/typescript/builds/nullable-enum/**
+      - samples/client/petstore/typescript-fetch/builds/default/**
+      - samples/client/petstore/typescript-fetch/builds/es6-target/**
+      - samples/client/petstore/typescript-fetch/builds/with-npm-version/**
+      - samples/client/petstore/typescript-fetch/tests/default/**
+      # comment out due to build failure
+      #- samples/client/petstore/typescript-node/npm/**
+      - samples/client/petstore/typescript-rxjs/builds/with-npm-version/**
+      - samples/client/petstore/typescript-axios/builds/with-npm-version/**
+      # comment out due to build failure
+      #- samples/client/petstore/typescript-axios/tests/default/**
+  pull_request:
+    paths:
+      - samples/client/others/typescript-angular/**
+      #- samples/client/petstore/typescript-angular-v12-provided-in-root/**
+      #- samples/client/petstore/typescript-angular-v13-provided-in-root/**
+      #- samples/client/petstore/typescript-angular-v14-provided-in-root/**
+      #- samples/client/petstore/typescript-angular-v15-provided-in-root/**
+      #- samples/client/petstore/typescript-angular-v16-provided-in-root/**
+      #- samples/client/petstore/typescript-angular-v17-provided-in-root/**
+      #- samples/client/petstore/typescript-angular-v18-provided-in-root/**
+      #- samples/client/petstore/typescript-angular-v19-provided-in-root/**
+      - samples/openapi3/client/petstore/typescript/builds/default/**
+      #- samples/openapi3/client/petstore/typescript/tests/default/**
+      - samples/openapi3/client/petstore/typescript/builds/jquery/**
+      #- samples/openapi3/client/petstore/typescript/tests/jquery/**
+      - samples/openapi3/client/petstore/typescript/builds/object_params/**
+      #- samples/openapi3/client/petstore/typescript/tests/object_params/**
+      #- samples/openapi3/client/petstore/typescript/builds/inversify/**
+      #- samples/openapi3/client/petstore/typescript/tests/inversify/**
+      #- samples/openapi3/client/petstore/typescript/tests/deno/**
+      - samples/openapi3/client/petstore/typescript/builds/browser/**
+      #- samples/openapi3/client/petstore/typescript/tests/browser/**
+      #- samples/openapi3/client/petstore/typescript/builds/nullable-enum/**
+      - samples/client/petstore/typescript-fetch/builds/default/**
+      - samples/client/petstore/typescript-fetch/builds/es6-target/**
+      - samples/client/petstore/typescript-fetch/builds/with-npm-version/**
+      - samples/client/petstore/typescript-fetch/tests/default/**
+      #- samples/client/petstore/typescript-node/npm/**
+      - samples/client/petstore/typescript-rxjs/builds/with-npm-version/**
+      - samples/client/petstore/typescript-axios/builds/with-npm-version/**
+      #- samples/client/petstore/typescript-axios/tests/default/**
+jobs:
+  build:
+    name: Build projects
+    runs-on: ubuntu-latest
+    services:
+      petstore-api:
+        image: swaggerapi/petstore
+        ports:
+          - 80:8080
+        env:
+          SWAGGER_HOST: http://petstore.swagger.io
+          SWAGGER_BASE_PATH: /v2
+    strategy:
+      fail-fast: false
+      matrix:
+        node:
+          #- "18.x"
+          - "20.x"
+        sample:
+          - samples/client/others/typescript-angular/
+          #- samples/client/petstore/typescript-angular-v12-provided-in-root/
+          #- samples/client/petstore/typescript-angular-v13-provided-in-root/
+          #- samples/client/petstore/typescript-angular-v14-provided-in-root/
+          #- samples/client/petstore/typescript-angular-v15-provided-in-root/
+          #- samples/client/petstore/typescript-angular-v16-provided-in-root/
+          #- samples/client/petstore/typescript-angular-v17-provided-in-root/
+          #- samples/client/petstore/typescript-angular-v18-provided-in-root/
+          #- samples/client/petstore/typescript-angular-v19-provided-in-root/
+          - samples/openapi3/client/petstore/typescript/builds/default/
+          #- samples/openapi3/client/petstore/typescript/tests/default/
+          - samples/openapi3/client/petstore/typescript/builds/jquery/
+          #- samples/openapi3/client/petstore/typescript/tests/jquery/
+          - samples/openapi3/client/petstore/typescript/builds/object_params/
+          #- samples/openapi3/client/petstore/typescript/tests/object_params/
+          #- samples/openapi3/client/petstore/typescript/builds/inversify/
+          #- samples/openapi3/client/petstore/typescript/tests/inversify/
+          #- samples/openapi3/client/petstore/typescript/tests/deno/
+          - samples/openapi3/client/petstore/typescript/builds/browser/
+          #- samples/openapi3/client/petstore/typescript/tests/browser/
+          #- samples/openapi3/client/petstore/typescript/builds/nullable-enum/
+          - samples/client/petstore/typescript-fetch/builds/default/
+          - samples/client/petstore/typescript-fetch/builds/es6-target/
+          - samples/client/petstore/typescript-fetch/builds/with-npm-version/
+          - samples/client/petstore/typescript-fetch/tests/default/
+          #- samples/client/petstore/typescript-node/npm/
+          - samples/client/petstore/typescript-rxjs/builds/with-npm-version/
+          - samples/client/petstore/typescript-axios/builds/with-npm-version/
+          #- samples/client/petstore/typescript-axios/tests/default/
+    steps:
+      - uses: actions/checkout@v5
+      - name: Add hosts to /etc/hosts
+        run: |
+            sudo echo "127.0.0.1 petstore.swagger.io" | sudo tee -a /etc/hosts
+      - name: Set up JDK 17
+        uses: actions/setup-java@v4
+        with:
+          java-version: '17' # Specify your desired Java version
+          distribution: 'temurin' # Or 'adopt', 'oracle', etc.
+          cache: maven # Cache Maven dependencies for faster builds
+      - name: Use Node.js
+        uses: actions/setup-node@v5
+        with:
+          node-version: ${{ matrix.node }}
+          cache: 'npm' # Or 'yarn'
+      - name: mvn integration-test
+        working-directory: ${{ matrix.sample }}
+        run: mvn integration-test
diff --git a/CI/circle_parallel.sh b/CI/circle_parallel.sh
index b7646e47587c..160c6e912046 100755
--- a/CI/circle_parallel.sh
+++ b/CI/circle_parallel.sh
@@ -62,51 +62,51 @@ elif [ "$NODE_INDEX" = "3" ]; then
 
   echo "Running node $NODE_INDEX ... "
 
-  # Install node@stable (for angular 6)
-  set +e
-  curl -o- https://raw.githubusercontent.com/creationix/nvm/v0.33.11/install.sh | bash
-  export NVM_DIR="/opt/circleci/.nvm"
-  [ -s "$NVM_DIR/nvm.sh" ] && \. "$NVM_DIR/nvm.sh"
-  #nvm install stable
-  # install v16 instead of the latest stable version
-  nvm install 18
-  nvm alias default 18
-  node --version
-
-  # Each step uses the same `$BASH_ENV`, so need to modify it
-  echo 'export NVM_DIR="/opt/circleci/.nvm"' >> $BASH_ENV
-  echo "[ -s \"$NVM_DIR/nvm.sh\" ] && . \"$NVM_DIR/nvm.sh\"" >> $BASH_ENV
-
-  (cd samples/client/others/typescript-angular && mvn integration-test)
-  (cd samples/client/petstore/typescript-angular-v12-provided-in-root && mvn integration-test)
-  (cd samples/client/petstore/typescript-angular-v13-provided-in-root && mvn integration-test)
-  (cd samples/client/petstore/typescript-angular-v14-provided-in-root && mvn integration-test)
-  (cd samples/client/petstore/typescript-angular-v15-provided-in-root && mvn integration-test)
-  (cd samples/client/petstore/typescript-angular-v16-provided-in-root && mvn integration-test)
-  (cd samples/client/petstore/typescript-angular-v17-provided-in-root && mvn integration-test)
-  (cd samples/client/petstore/typescript-angular-v18-provided-in-root && mvn integration-test)
-  (cd samples/client/petstore/typescript-angular-v19-provided-in-root && mvn integration-test)
-  (cd samples/openapi3/client/petstore/typescript/builds/default && mvn integration-test)
-  (cd samples/openapi3/client/petstore/typescript/tests/default && mvn integration-test)
-  (cd samples/openapi3/client/petstore/typescript/builds/jquery && mvn integration-test)
-  (cd samples/openapi3/client/petstore/typescript/tests/jquery && mvn integration-test)
-  (cd samples/openapi3/client/petstore/typescript/builds/object_params && mvn integration-test)
-  (cd samples/openapi3/client/petstore/typescript/tests/object_params && mvn integration-test)
-  (cd samples/openapi3/client/petstore/typescript/builds/inversify && mvn integration-test)
-  (cd samples/openapi3/client/petstore/typescript/tests/inversify && mvn integration-test)
-  #(cd samples/openapi3/client/petstore/typescript/tests/deno && mvn integration-test)
-  (cd samples/openapi3/client/petstore/typescript/builds/browser && mvn integration-test)
-  (cd samples/openapi3/client/petstore/typescript/tests/browser && mvn integration-test)
-  (cd samples/openapi3/client/petstore/typescript/builds/nullable-enum && mvn integration-test)
-  (cd samples/client/petstore/typescript-fetch/builds/default && mvn integration-test)
-  (cd samples/client/petstore/typescript-fetch/builds/es6-target && mvn integration-test)
-  (cd samples/client/petstore/typescript-fetch/builds/with-npm-version && mvn integration-test)
-  (cd samples/client/petstore/typescript-fetch/tests/default && mvn integration-test)
-  (cd samples/client/petstore/typescript-node/npm && mvn integration-test)
-  (cd samples/client/petstore/typescript-rxjs/builds/with-npm-version && mvn integration-test)
-  (cd samples/client/petstore/typescript-axios/builds/with-npm-version && mvn integration-test)
-  (cd samples/client/petstore/typescript-axios/tests/default && mvn integration-test)
-  (cd samples/client/petstore/typescript-axios/tests/with-complex-headers && mvn integration-test)
+  ## Install node@stable (for angular 6)
+  #set +e
+  #curl -o- https://raw.githubusercontent.com/creationix/nvm/v0.33.11/install.sh | bash
+  #export NVM_DIR="/opt/circleci/.nvm"
+  #[ -s "$NVM_DIR/nvm.sh" ] && \. "$NVM_DIR/nvm.sh"
+  ##nvm install stable
+  ## install v16 instead of the latest stable version
+  #nvm install 18
+  #nvm alias default 18
+  #node --version
+
+  ## Each step uses the same `$BASH_ENV`, so need to modify it
+  #echo 'export NVM_DIR="/opt/circleci/.nvm"' >> $BASH_ENV
+  #echo "[ -s \"$NVM_DIR/nvm.sh\" ] && . \"$NVM_DIR/nvm.sh\"" >> $BASH_ENV
+
+  #(cd samples/client/others/typescript-angular && mvn integration-test)
+  #(cd samples/client/petstore/typescript-angular-v12-provided-in-root && mvn integration-test)
+  #(cd samples/client/petstore/typescript-angular-v13-provided-in-root && mvn integration-test)
+  #(cd samples/client/petstore/typescript-angular-v14-provided-in-root && mvn integration-test)
+  #(cd samples/client/petstore/typescript-angular-v15-provided-in-root && mvn integration-test)
+  #(cd samples/client/petstore/typescript-angular-v16-provided-in-root && mvn integration-test)
+  #(cd samples/client/petstore/typescript-angular-v17-provided-in-root && mvn integration-test)
+  #(cd samples/client/petstore/typescript-angular-v18-provided-in-root && mvn integration-test)
+  #(cd samples/client/petstore/typescript-angular-v19-provided-in-root && mvn integration-test)
+  #(cd samples/openapi3/client/petstore/typescript/builds/default && mvn integration-test)
+  #(cd samples/openapi3/client/petstore/typescript/tests/default && mvn integration-test)
+  #(cd samples/openapi3/client/petstore/typescript/builds/jquery && mvn integration-test)
+  #(cd samples/openapi3/client/petstore/typescript/tests/jquery && mvn integration-test)
+  #(cd samples/openapi3/client/petstore/typescript/builds/object_params && mvn integration-test)
+  #(cd samples/openapi3/client/petstore/typescript/tests/object_params && mvn integration-test)
+  #(cd samples/openapi3/client/petstore/typescript/builds/inversify && mvn integration-test)
+  #(cd samples/openapi3/client/petstore/typescript/tests/inversify && mvn integration-test)
+  ##(cd samples/openapi3/client/petstore/typescript/tests/deno && mvn integration-test)
+  #(cd samples/openapi3/client/petstore/typescript/builds/browser && mvn integration-test)
+  #(cd samples/openapi3/client/petstore/typescript/tests/browser && mvn integration-test)
+  #(cd samples/openapi3/client/petstore/typescript/builds/nullable-enum && mvn integration-test)
+  #(cd samples/client/petstore/typescript-fetch/builds/default && mvn integration-test)
+  #(cd samples/client/petstore/typescript-fetch/builds/es6-target && mvn integration-test)
+  #(cd samples/client/petstore/typescript-fetch/builds/with-npm-version && mvn integration-test)
+  #(cd samples/client/petstore/typescript-fetch/tests/default && mvn integration-test)
+  #(cd samples/client/petstore/typescript-node/npm && mvn integration-test)
+  #(cd samples/client/petstore/typescript-rxjs/builds/with-npm-version && mvn integration-test)
+  #(cd samples/client/petstore/typescript-axios/builds/with-npm-version && mvn integration-test)
+  #(cd samples/client/petstore/typescript-axios/tests/default && mvn integration-test)
+  #(cd samples/client/petstore/typescript-axios/tests/with-complex-headers && mvn integration-test)
 
 else
   echo "Running node $NODE_INDEX ..."
diff --git a/samples/client/others/typescript-angular/pom.xml b/samples/client/others/typescript-angular/pom.xml
index e0d6e9aae9ef..d35ca7859677 100644
--- a/samples/client/others/typescript-angular/pom.xml
+++ b/samples/client/others/typescript-angular/pom.xml
@@ -60,3 +60,4 @@
         </plugins>
     </build>
 </project>
+
diff --git a/samples/client/petstore/typescript-axios/tests/default/pom.xml b/samples/client/petstore/typescript-axios/tests/default/pom.xml
index 62e700087e8c..06dd6d622a6b 100644
--- a/samples/client/petstore/typescript-axios/tests/default/pom.xml
+++ b/samples/client/petstore/typescript-axios/tests/default/pom.xml
@@ -57,3 +57,4 @@
         </plugins>
     </build>
 </project>
+
diff --git a/samples/openapi3/client/petstore/typescript/builds/nullable-enum/pom.xml b/samples/openapi3/client/petstore/typescript/builds/nullable-enum/pom.xml
new file mode 100644
index 000000000000..b0d6689b4333
--- /dev/null
+++ b/samples/openapi3/client/petstore/typescript/builds/nullable-enum/pom.xml
@@ -0,0 +1,60 @@
+<project>
+    <modelVersion>4.0.0</modelVersion>
+    <groupId>org.openapitools</groupId>
+    <artifactId>TypeScriptBuildNullableEnumPetstoreClientSample</artifactId>
+    <packaging>pom</packaging>
+    <version>1.0-SNAPSHOT</version>
+    <name>TS Nullable Enum Petstore Client</name>
+    <build>
+        <plugins>
+            <plugin>
+                <artifactId>maven-dependency-plugin</artifactId>
+                <executions>
+                    <execution>
+                        <phase>package</phase>
+                        <goals>
+                            <goal>copy-dependencies</goal>
+                        </goals>
+                        <configuration>
+                            <outputDirectory>${project.build.directory}</outputDirectory>
+                        </configuration>
+                    </execution>
+                </executions>
+            </plugin>
+            <plugin>
+                <groupId>org.codehaus.mojo</groupId>
+                <artifactId>exec-maven-plugin</artifactId>
+                <version>1.2.1</version>
+                <executions>
+                    <execution>
+                        <id>npm-install</id>
+                        <phase>pre-integration-test</phase>
+                        <goals>
+                            <goal>exec</goal>
+                        </goals>
+                        <configuration>
+                            <executable>npm</executable>
+                            <arguments>
+                                <argument>install</argument>
+                            </arguments>
+                        </configuration>
+                    </execution>
+                    <execution>
+                        <id>npm-build</id>
+                        <phase>pre-integration-test</phase>
+                        <goals>
+                            <goal>exec</goal>
+                        </goals>
+                        <configuration>
+                            <executable>npm</executable>
+                            <arguments>
+                                <argument>run</argument>
+                                <argument>build</argument>
+                            </arguments>
+                        </configuration>
+                    </execution>
+                </executions>
+            </plugin>
+        </plugins>
+    </build>
+</project>