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Strip PropTypes checkers in production build #8066
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    This reverts commit e75e8dc.
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           Looks good  | 
    
    
  gaearon 
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…k#7132)"" This reverts commit be71f76. In other words, now we again have the warning if you attempt to call PropTypes manually. It was removed in facebook#8066 but we shouldn't have done this since we still want to avoid people accidentally calling them in production (and even more so since now it would throw). Fixes facebook#8080.
    
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…k#7132)"" This reverts commit be71f76. In other words, now we again have the warning if you attempt to call PropTypes manually. It was removed in facebook#8066 but we shouldn't have done this since we still want to avoid people accidentally calling them in production (and even more so since now it would throw). Fixes facebook#8080.
    
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* Revert "Revert "Warn if PropType function is called manually (#7132)"" This reverts commit be71f76. In other words, now we again have the warning if you attempt to call PropTypes manually. It was removed in #8066 but we shouldn't have done this since we still want to avoid people accidentally calling them in production (and even more so since now it would throw). Fixes #8080. * Pass secret in ReactControlledValuePropTypes * Record tests
    
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* Strip PropTypes in production build * Revert "Warn if PropType function is called manually (facebook#7132)" This reverts commit e75e8dc.
      
  
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           FWIW, this broke our code in production, but not locally as we had some code that compared propTypes to determine behaviour (ie.  There is a distinct lack of documentation about the behaviour of prop-types in production, changing them from a distinct symbol to something that is equal for all types is fairly problematic.  | 
    
  
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Resubmitting #7651 because I accidentally nuked my fork.
Feedback from #7651 is addressed.
This removes the warning about PropTypes and actually replaces them with a single PropType function that throws in production.
Difference from master: