Notify the user when closing the browser while mutations are still running #9453
              
                
                  
                  
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                    TkDodo
                  
              
          
                  
                    
                      SimonSimCity
                    
                  
                
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| I would like to offer a warning to the user if he closes the tab and mutations have not yet returned with a response. Currently, I couldn't find a way of getting a number of pending mutations from this library, so I thought to start a discussion around that. | 
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          Answered by
          
            TkDodo
          
      
      
        Jul 18, 2025 
      
    
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      Answer selected by
        SimonSimCity
  
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useIsMutating()as a hook, orqueryClient.isMutating()as an imperative function call in event handlers.