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packages/react/src/hooks/useReactFlow.ts

@@ -280,9 +280,14 @@ export function useReactFlow<NodeType extends Node = Node, EdgeType extends Edge
             ?.values() ?? []
         ),
       fitView: async (options: FitViewOptions<NodeType> | undefined) => {
+        // We either create a new Promise or reuse the existing one
+        // Even if fitView is called multiple times in a row, we only end up with a single Promise
         const fitViewResolver = store.getState().fitViewResolver ?? Promise.withResolvers<boolean>();
+
+        // We schedule a fitView by setting fitViewQueued and triggering a setNodes
         store.setState({ fitViewQueued: true, fitViewOptions: options, fitViewResolver });
         batchContext.nodeQueue.push((nodes) => [...nodes]);
+
         return fitViewResolver.promise;
       },
     };