Cache result of isCheckJsEnabledForFile in getSemanticDiagnosticsForFile
Cache result of isCheckJsEnabledForFile in getSemanticDiagnosticsForFile

alexeagle/TypeScript,weswigham/TypeScript,basarat/TypeScript,kpreisser/TypeScript,basarat/TypeScript,minestarks/TypeScript,kitsonk/TypeScript,donaldpipowitch/TypeScript,microsoft/TypeScript,kitsonk/TypeScript,nojvek/TypeScript,alexeagle/TypeScript,RyanCavanaugh/TypeScript,nojvek/TypeScript,weswigham/TypeScript,minestarks/TypeScript,SaschaNaz/TypeScript,microsoft/TypeScript,Microsoft/TypeScript,donaldpipowitch/TypeScript,SaschaNaz/TypeScript,RyanCavanaugh/TypeScript,donaldpipowitch/TypeScript,minestarks/TypeScript,Microsoft/TypeScript,nojvek/TypeScript,kpreisser/TypeScript,RyanCavanaugh/TypeScript,weswigham/TypeScript,kpreisser/TypeScript,microsoft/TypeScript,basarat/TypeScript,Microsoft/TypeScript,donaldpipowitch/TypeScript,SaschaNaz/TypeScript,kitsonk/TypeScript,basarat/TypeScript,alexeagle/TypeScript,SaschaNaz/TypeScript,nojvek/TypeScript