refactor(rollup): treeshakable

src/container/ReactFlow/utils.ts

@@ -26,3 +26,14 @@ export function useNodeOrEdgeTypes(nodeOrEdgeTypes: any, createTypes: any): any
 
   return typesParsed;
 }
+
+export default function injectStyle(css: string): void {
+  if (!css || typeof document === 'undefined') return;
+
+  const head = document.head || document.getElementsByTagName('head')[0];
+  const style = document.createElement('style');
+
+  head.appendChild(style);
+
+  style.appendChild(document.createTextNode(css));
+}