I installed fresh copy of Visual Studio 2015 update 3 on my secondary machine and try to execute Angular2 project integrated with ASP.NET CORE and came across an issue
TS5023 Build:Unknown compiler option 'typeRoots'
TS5023 Build:Unknown compiler option 'types'
Solution 1:
In VS2015 go to:
Tools -> Options -> Projects and Solutions -> External Web Tools.
uncheck anything that starts with $(VSINSTALLDIR)
Solution 2 (recommended):
Before trying any other option, I just updated Typescript version installed for VS2015 from 2.0.3 to 2.2.0 and this resolve compiler option error, Upgrade to latest version of Typescript by installing executable from MS Official Download link.
Muhammad Hassan 
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| Look forward to going over your web page yet again.
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Thanks for the quick help.
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