diff --git a/packages/addons/addons/client-function-transform/transformer-client.ts b/packages/addons/addons/client-function-transform/transformer-client.ts
index 5e4f555..fcb4378 100644
--- a/packages/addons/addons/client-function-transform/transformer-client.ts
+++ b/packages/addons/addons/client-function-transform/transformer-client.ts
@@ -32,7 +32,7 @@ export const createClientTransformer = ({ libPath, functionsDir }: Transformatio
                 }
 
                 if (ts.isImportDeclaration(node)) {
-                    return undefined;
+                    return node;
                 }
 
                 if (!isTransformable(node)) {
@@ -41,7 +41,7 @@ export const createClientTransformer = ({ libPath, functionsDir }: Transformatio
 
                 const decorations = getDecoration(sf, node, DECORATOR_NAME);
                 if (!isNodeExported(node) || !decorations) {
-                    return undefined;
+                    return node;
                 }
 
                 const [transformedNode, isServiceFunction] = transformNode(node, sf, decorations);
@@ -49,7 +49,7 @@ export const createClientTransformer = ({ libPath, functionsDir }: Transformatio
                 return transformedNode ?? node;
             };
 
-            sf = ts.visitNode(sf, visitor);
+            sf = ts.visitNode(sf, visitor, ts.isSourceFile);
             if (hasServiceFunctions) {
                 if (!hasInvokeImport(sf, libPath, NAMED_IMPORTS)) {
                     sf = ts.factory.updateSourceFile(sf, [getImportInvoke(libPath, NAMED_IMPORTS), ...sf.statements]);
@@ -94,7 +94,6 @@ export const hasInvokeImport = (sf: ts.SourceFile, libPath: string, namedImports
 
 export const getImportInvoke = (libPath: string, namedImports: string[]): ts.Statement => {
     return ts.factory.createImportDeclaration(
-        undefined,
         undefined,
         ts.factory.createImportClause(
             false,
diff --git a/packages/addons/addons/magellan-shared/node-helpers.ts b/packages/addons/addons/magellan-shared/node-helpers.ts
index d42cbd3..cf0469b 100644
--- a/packages/addons/addons/magellan-shared/node-helpers.ts
+++ b/packages/addons/addons/magellan-shared/node-helpers.ts
@@ -99,7 +99,6 @@ export const getFunctionName = (node: ts.VariableStatement | ts.FunctionDeclarat
 
 export const createInvokeImport = (libPath: string, namedImports: string[]): ts.Statement => {
     return factory.createImportDeclaration(
-        undefined,
         undefined,
         factory.createImportClause(
             false,
diff --git a/packages/addons/addons/magellan-shared/transform-function.ts b/packages/addons/addons/magellan-shared/transform-function.ts
index d6da18b..672b2b3 100644
--- a/packages/addons/addons/magellan-shared/transform-function.ts
+++ b/packages/addons/addons/magellan-shared/transform-function.ts
@@ -111,7 +111,6 @@ export const transformInvocableFunction = (
     const parameters = getObjectLiteralsOfNode(node);
     return factory.updateFunctionDeclaration(
         node,
-        node.decorators,
         node.modifiers,
         node.asteriskToken,
         node.name,
@@ -133,7 +132,6 @@ export const transformLocalServerFunction = (node: ts.Node): ts.Node => {
     const newParameters = createObjectifiedParameter(node);
     return factory.updateFunctionDeclaration(
         node,
-        node.decorators,
         node.modifiers,
         node.asteriskToken,
         node.name,
@@ -178,9 +176,13 @@ const createObjectifiedParameter = (node: ts.Node): ts.ParameterDeclaration[] =>
         parameters?.map(p => factory.createBindingElement(undefined, undefined, factory.createIdentifier(p.name.getText()), undefined)) ?? []
     );
     const typeLiteral = factory.createTypeLiteralNode(
-        parameters?.map(p => factory.createPropertySignature(p.modifiers, p.name.getText(), p.questionToken, p.type))
+        parameters?.map(p => factory.createPropertySignature(
+            // TODO: API clash ModifierLike[] (new) vs. Modifier[] (old)
+            p.modifiers as any, 
+            p.name.getText(), 
+            p.questionToken, p.type))
     );
-    return [factory.createParameterDeclaration(undefined, undefined, undefined, bindingPattern, undefined, typeLiteral, undefined)];
+    return [factory.createParameterDeclaration(undefined, undefined, bindingPattern, undefined, typeLiteral, undefined)];
 };
 
 /**
diff --git a/packages/addons/addons/service-function-generate/transformer-server.ts b/packages/addons/addons/service-function-generate/transformer-server.ts
index 3c3d191..cdf800e 100644
--- a/packages/addons/addons/service-function-generate/transformer-server.ts
+++ b/packages/addons/addons/service-function-generate/transformer-server.ts
@@ -52,7 +52,7 @@ export const createServerTransformer = ({ functionsDir }: TransformationArgument
                 return ts.visitEachChild(node, visitor, ctx);
             };
 
-            return ts.visitNode(sf, visitor);
+            return ts.visitNode(sf, visitor, ts.isSourceFile);
         };
     };
     return platformTransformerFactory;