Currently working on an ASP.NET Core project that heavily utilizes TypeScript.
Does Visual Studio support debugging TypeScript code?
Currently working on an ASP.NET Core project that heavily utilizes TypeScript.
Does Visual Studio support debugging TypeScript code?
In the past, Visual Studio did not offer this functionality.
However, with the release of Visual Studio 2017, this issue has been resolved. Simply set your breakpoint, run your project using IE or Chrome, and your breakpoint will be triggered in your TypeScript file within the VS environment (not in the browser's code debug window). This advancement is a significant improvement for Typescript development.
An interesting feature is that if the code transitions to JavaScript when moving to another file without a corresponding TypeScript file, it will seamlessly switch back to TypeScript when possible.
Ensure that browser link is enabled to view TS breakpoints being triggered. You can find the option as a blue arrow circle located on the right side of the browser selection drop-down menu in VS2017, as it may be disabled by default.
While working on converting the dotnetcore ReactRedux template to Typescript, I encountered an issue where breakpoints were not hitting my typescript files.
After some investigation, I discovered that in the tsconfig.json file, it is necessary to have the options inlineSourceMap:true and inlineSources:true set in order for breakpoints to work correctly.
One of the easiest ways to debug JavaScript and TypeScript is by utilizing the Microsoft Edge DevTools Protocol, which was introduced with the Windows 10 April 2018 Update (Version 1803). Additionally, you'll need Visual Studio 2017 Version 15.7 or a newer version.
In the past, I struggled with getting JavaScript debugging to function properly. However, thanks to these updates, it now works seamlessly:
Note that when using Edge, there will be an indication that the developer tools server has been launched:
I discovered two scenarios that do not cause issues in Visual Studio 2017 (version 15.9.5).
1) .UseContentRoot
When modifying the content route using UseContentRoot() in the WebHost.CreateDefaultBuilder method in Program.cs, Visual Studio will not encounter any errors.
2) wwwroot Folder
Changing the webroot with UseWebRoot() functions correctly.
However, even if "wwwroot" folder is deleted from the project root, Visual Studio will still run without any issues.
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