8000 Cannot use with Stage 3 Decorators · Issue #381 · unjs/jiti · GitHub
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Cannot use with Stage 3 Decorators #381

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alexhanga opened this issue May 22, 2025 · 1 comment
Open

Cannot use with Stage 3 Decorators #381

alexhanga opened this issue May 22, 2025 · 1 comment
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@alexhanga
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Environment

@better-auth/cli -> c12 -> jiti
Node 22.14.0

Reproduction

  1. Create a file with a Stage 3 decorator that trying to access context.kind (second argument of a decorator)
  2. Wrap some class with it
  3. Try to load config with it, receive error TypeError: Cannot read properties of undefined (reading 'kind')
  4. Try to add Babel plugin into transformOptions.babel.plugins, try again. Observe the same error

Describe the bug

My project uses latest Stage 3 Decorators proposal in our codebase, and we found that c12 uses jiti to load config. We tried to pass babel.plugins: ["@babel/plugin-proposal-decorators", { "version": "2023-11" }], but without any luck. It ends on the end of a list, so previous transformations already tried to convert code with legacy decorators.

Additional context

I've tried to load the config with just jiti, this is how I found that the error is in jiti setup. Patching c12 or @better-auth/cli doesn't provide any benefit

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          @alexhanga
alexhanga




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      May 22, 2025

    

  








      

  
      



  

  @alexhanga





  


    

      

  

    

        
    
    

  


      
          
  
      
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            alexhanga
  

      

      

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        May 22, 2025


      
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Sorry, wrong error. After running without cache, I've received error:


[Error: undefined: Cannot use the decorators and decorators-legacy plugin together



It seems that [proposalDecoratorsPlugin, { legacy: true }] and babel-plugin-parameter-decorator is the problem, and it's impossible to disable it outside

      		
    

  





        


            

            
            

              
            

        

      


      

            
  
  

    
  
    
    

  

  

  


    
















  
  

    

      

  





  




  
  

              

  
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