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[playground] Update the playground UI #34468
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            EugeneChoi4
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EugeneChoi4:compiler-playground-design
  
      
      
   
  Sep 12, 2025 
      
    
                
     Merged
            
            [playground] Update the playground UI #34468
                    EugeneChoi4
  merged 13 commits into
  facebook:main
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EugeneChoi4:compiler-playground-design
  
      
      
   
  Sep 12, 2025 
              
            
      
        
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                    mofeiZ
  
              
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                    Sep 11, 2025 
                  
              
              
            
            
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Looks great! Before you merge, could we update the error message in the Output panel to make it very clear when the error is coming from the config panel?
  
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Summary
Updated the UI of the React compiler playground. The config, Input, and Output panels will now span the viewport width when "Show Internals" is not toggled on. When "Show Internals" is toggled on, the old vertical accordion tabs are still used. Going to add support for the "Applied Configs" tabs underneath the "Config Overrides" tab next.
How did you test this change?
Screen.Recording.2025-09-11.at.2.15.14.PM.mov