JetBrains has released ReSharper 8.1 with improved integration into Visual Studio and TypeScript support plus compatible updates to dotCover for code coverage and dotTrace Performance for performance profiling.

ReSharper is an add-on for Visual Studio that can be used to analyze code quality, carry out code changes across an entire code set, and show how code can be improved.

Version 8.0 released in July added support for the Microsoft Visual Studio 2013 Preview, while preserving compatibility with  VS 2012, 2010, 2008 and 2005, and the newly released ReSharper 8.1 improves this support by  integrating its marker bar to show  errors on VS2013's enhanced scroll bar:

(click to enlarge)

ReSharper 8.1 also supports another VS2103-specific feature, Peek Definition in that its navigation facilities are extended to the Peek Definition inset window and it adds Ctrl-click shortcuts to invoke it. It also uses the Peek Definition API for large result sets obtained from features such as Find Usages.

(click to enlarge)

TypeScript support in ReSharper 8.1 covers refactorings (Rename, Introduce Variable), navigation, code completion, rearranging code (including a fancy concept of greedy brace) and code inspections such as detecting unused parameters and invalid CSS references.

dotCover 2.6 and dotTrace Performance 5.5.3 integrate with Resharper 8.1 and dotCover now includes an Extension Manager similar to the one introduced in ReSharper 8.0.

ReSharper 8.1 has more C# code inspections revealing potentially severe runtime issues such as InvalidCastExceptions in foreach loops and infinite for loops. There are enhancements to Project Dependency View and to JavaScript and XAML support. There are also about 500 bug fixes and performance improvements.