This worked for me change .csproj to include this setting inside PropertyGroup: true You can debug your client-side code using a browser debugger such as the built-in Edge and Chrome debugger, or the Debugger for Firefox. Our upcoming work will include bug fixes, polish, low-risk editor-oriented features, and some possible iteration on new features. TypeScript version mismatch in Visual Studio 2019 which is identical to me, but for VS2019. Note: The minimum supported version of this package is 3.6. This can help cut down on some typing and jumping around text as you document your code or add JSDoc types in JavaScript. It seems the typescript syntax We also improved performance of the language service to handle larger projects. For more information, seeCompile TypeScript code using NuGetandCompile TypeScript code using tsc. For example, consider one of the most common examples the style property in the DOM and CSSStyleRule API. seems like a distraction. For more information, see Visual Studio tutorials | JavaScript and TypeScript. First, TypeScript 5.1 now allows undefined-returning functions to have no return statement. The default is "inline". Check the After upgrading VS2022 from Preview 4.1 to Preview 6 our web project based on typescript stopped wroking correctly. We also support the Mocha and Tape test libraries. You cannot create or open JavaScript UWP projects (files with extension .jsproj). To address another similar pain-point, under TypeScripts --noImplicitReturns option, functions returning only undefined now have a similar exception to void, in that not every single code path must end in an explicit return. As a result, you may begin to see errors like the following based on entries in your tsconfig.jsons types option or /// directives. For more information, you can read up on the original issue and the implementing pull request. And while this version of TypeScript does not yet change the types for these built-in interfaces, CSSStyleRule can now be defined in the following way: This also allows other patterns like requiring set accessors to accept only valid data, but specifying that get accessors may return undefined if some underlying state hasnt been initialized yet. Setup is easy and there is a Node.js debugging tutorial to help you. Projects configured for npm can specify their own version of the TypeScript language service by adding the TypeScript npm package. The limitations here meant that components could not be used if they returned or rendered a more broad type than just JSX.Element.