chore(warnings): only print for node_env=development

src/container/EdgeRenderer/MarkerSymbols.tsx

@@ -38,13 +38,14 @@ export function useMarkerSymbol(type: MarkerType) {
   const symbol = useMemo(() => {
     const symbolExists = MarkerSymbols.hasOwnProperty(type);
 
-    if (process.env.NODE_ENV === 'development') {
-      if (!symbolExists) {
+    if (!symbolExists) {
+      // @ts-ignore
+      if (process.env.NODE_ENV === 'development') {
         console.warn(
           `[React Flow]: Marker type "${type}" doesn't exist. Help: https://reactflow.dev/error-decoder#900`
         );
-        return () => null;
       }
+      return () => null;
     }
 
     return MarkerSymbols[type];

src/container/EdgeRenderer/index.tsx

@@ -107,20 +107,24 @@ const EdgeRenderer = (props: EdgeRendererProps) => {
               const sourcePosition = sourceHandle?.position || Position.Bottom;
               const targetPosition = targetHandle?.position || Position.Top;
 
-              if (process.env.NODE_ENV === 'development') {
-                if (!sourceHandle) {
+              if (!sourceHandle) {
+                // @ts-ignore
+                if (process.env.NODE_ENV === 'development') {
                   console.warn(
                     `[React Flow]: Couldn't create edge for source handle id: ${edge.sourceHandle}; edge id: ${edge.id}. Help: https://reactflow.dev/error-decoder#800`
                   );
-                  return null;
                 }
+                return null;
+              }
 
-                if (!targetHandle) {
+              if (!targetHandle) {
+                // @ts-ignore
+                if (process.env.NODE_ENV === 'development') {
                   console.warn(
                     `[React Flow]: Couldn't create edge for target handle id: ${edge.targetHandle}; edge id: ${edge.id}. Help: https://reactflow.dev/error-decoder#800`
                   );
-                  return null;
                 }
+                return null;
               }
 
               const { sourceX, sourceY, targetX, targetY } = getEdgePositions(