show warning message for nodejs server only (#481)

Author: wing328

modules/openapi-generator/src/main/java/org/openapitools/codegen/languages/NodeJSServerCodegen.java

@@ -57,18 +57,6 @@ public class NodeJSServerCodegen extends DefaultCodegen implements CodegenConfig
     public NodeJSServerCodegen() {
         super();
 
-        StringBuilder message = new StringBuilder();
-        message.append(System.lineSeparator()).append(System.lineSeparator())
-                .append("=======================================================================================")
-                .append(System.lineSeparator())
-                .append("Currently, Node.js server doesn't work as its dependency doesn't support OpenAPI Spec3.")
-                .append(System.lineSeparator())
-                .append("For further details, see https://github.com/OpenAPITools/openapi-generator/issues/34")
-                .append(System.lineSeparator())
-                .append("=======================================================================================")
-                .append(System.lineSeparator()).append(System.lineSeparator());
-        LOGGER.warn(message.toString());
-
         // set the output folder here
         outputFolder = "generated-code/nodejs";
 
@@ -310,6 +298,18 @@ private static List<Map<String, Object>> sortOperationsByPath(List<CodegenOperat
     public void processOpts() {
         super.processOpts();
 
+        StringBuilder message = new StringBuilder();
+        message.append(System.lineSeparator()).append(System.lineSeparator())
+                .append("=======================================================================================")
+                .append(System.lineSeparator())
+                .append("Currently, Node.js server doesn't work as its dependency doesn't support OpenAPI Spec3.")
+                .append(System.lineSeparator())
+                .append("For further details, see https://github.com/OpenAPITools/openapi-generator/issues/34")
+                .append(System.lineSeparator())
+                .append("=======================================================================================")
+                .append(System.lineSeparator()).append(System.lineSeparator());
+        LOGGER.warn(message.toString());
+
         if (additionalProperties.containsKey(GOOGLE_CLOUD_FUNCTIONS)) {
             setGoogleCloudFunctions(
                     Boolean.valueOf(additionalProperties.get(GOOGLE_CLOUD_FUNCTIONS).toString()));