1. # Legacy JSX Runtimes
    
  2. 
    
  3. This is an internal testing fixture for the special JSX runtime versions released for 0.14, 15, and 16.
    
  4. 
    
  5. They are checked into the corresponding `react-*/cjs/*` folders.
    
  6. 
    
  7. Run the full regression suite:
    
  8. 
    
  9. ```
    
  10. yarn
    
  11. yarn test
    
  12. ```