Update src/compiler/sys.ts
Update src/compiler/sys.ts

Co-Authored-By: Nathan Shively-Sanders <8fee455e3013291815c926e32dbf900166bd16e0@users.noreply.github.com>
microsoft/TypeScript,SaschaNaz/TypeScript,weswigham/TypeScript,RyanCavanaugh/TypeScript,kitsonk/TypeScript,SaschaNaz/TypeScript,SaschaNaz/TypeScript,RyanCavanaugh/TypeScript,nojvek/TypeScript,kitsonk/TypeScript,minestarks/TypeScript,nojvek/TypeScript,kpreisser/TypeScript,alexeagle/TypeScript,nojvek/TypeScript,Microsoft/TypeScript,microsoft/TypeScript,SaschaNaz/TypeScript,weswigham/TypeScript,Microsoft/TypeScript,alexeagle/TypeScript,kpreisser/TypeScript,RyanCavanaugh/TypeScript,nojvek/TypeScript,kitsonk/TypeScript,kpreisser/TypeScript,minestarks/TypeScript,microsoft/TypeScript,weswigham/TypeScript,alexeagle/TypeScript,minestarks/TypeScript,Microsoft/TypeScript