TypeScript 3.5 introduces several optimizations around type-checking and incremental builds. 

.NET Core May 2019 Updates – 1.0.16, 1.1.14, 2.1.11 and 2.2.5 

Announcing ML.NET 1.0 

Rider 2019.1 Has Arrived! 

Support for the recently released Visual Studio 2019 RTM, including but not limited to supporting the “async packages auto-load” API in Visual Studio 2019. 

The tooltip that shows the expression type (Cmd/Ctrl-hover) in JavaScript and TypeScript files now has a syntax highlighting. 

AutoMapper 8.1 adds a major new feature - attribute-based maps. Attribute maps let you easily declare maps on destination types when you have straightforward scenarios. Instead of: 

public class OrderProfile {  
    public OrderProfile() {
        CreateMap<Order, OrderIndexModel>();
        CreateMap<Order, OrderEditModel>();
        CreateMap<Order, OrderCreateModel>();
    }
}

You can declare your type maps directly on the destination types themselves with AutoMapAttribute: 

[AutoMap(typeof(Order))]
public class OrderIndexModel {  
    // members
}

[AutoMap(typeof(Order))]
public class OrderEditModel {  
    // members
}

[AutoMap(typeof(Order))]
public class OrderCreateModel {  
    // members
}

the .NET Core April 2019 Update. These updates contain security and reliability fixes.  

Let’s dive in and see what’s new in TypeScript 3.4!

- Faster subsequent builds with the --incremental flag
- Higher order type inference from generic functions
- Improvements for ReadonlyArray and readonly tuples
- const assertions
- Type-checking for globalThis
- Convert parameters to destructured object
- Breaking changes 

Announcing TypeScript 3.4 RC