News

Microsoft's PowerShell Dev Team Helps Fix OmniSharp

In announcing an update to the PowerShell extension for Visual Studio Code, Microsoft's dev team revealed it helped fix the latest edition of the OmniSharp C# Language Server Protocol in a month-long effort. One of the bugs fixed would have broken the debugger, while the other affected startup reliability.

The LSP defines how a language server works with an IDE/editor, effectively providing language-specific "smarts" like auto complete, go to definition, find all references and so on.

The C# Language Server Protocol is an open source project that's just one tool in the arsenal of OmniSharp, described as a family of projects designed to enable a great .NET experience in various editors/IDEs.

The VS Code PowerShell Extension
[Click on image for larger view.] The VS Code PowerShell Extension (source: Microsoft).

The VS Code PowerShell extension uses the OmniSharp LSP library and Debug Adapter Protocol (DAP) server library, said to be the tool's biggest dependency. It helps users develop PowerShell modules, commands and scripts in VS Code. In a new update of the PowerShell extension, the team used the latest update to OmniSharp, v0.19.2. In doing so, the team found the bugs, which it helped fix.

"After our initial upgrade to OmniSharp v0.19.0, as early adopters we encountered two major bugs in the library," revealed a June 2 blog post announcing the May 2021 update to the extension. "Rob [Holt] and Andy [Schwartzmeyer] spent a month identifying and solving a serialization bug in the Debug Adapter Protocol which would have broken the extension's debugger, and a race condition which temporarily impacted startup reliability in the preview extension. As our fixes went upstream, we improved the OmniSharp library not only for the PowerShell extension, but also for several other Visual Studio Code extensions similarly relying on OmniSharp."

Other highlights of the May 2021 update to the PowerShell extension detailed in the announcement include:

The extension in the VS Code Marketplace has been installed more than 4 million times, earning and average 3.8 rating (scale to 5) from 124 developers who reviewed it. It provides:

  • Syntax highlighting
  • Code snippets
  • IntelliSense for cmdlets and more
  • Rule-based analysis provided by PowerShell Script Analyzer
  • Go to Definition of cmdlets and variables
  • Find References of cmdlets and variables
  • Document and workspace symbol discovery
  • Run selected selection of PowerShell code using F8
  • Launch online help for the symbol under the cursor using Ctrl+F1
  • Local script debugging
  • Integrated console support
  • PowerShell ISE color theme

The tool's development is carried out on GitHub.

About the Author

David Ramel is an editor and writer for Converge360.

comments powered by Disqus

Featured

  • Creating Reactive Applications in .NET

    In modern applications, data is being retrieved in asynchronous, real-time streams, as traditional pull requests where the clients asks for data from the server are becoming a thing of the past.

  • AI for GitHub Collaboration? Maybe Not So Much

    No doubt GitHub Copilot has been a boon for developers, but AI might not be the best tool for collaboration, according to developers weighing in on a recent social media post from the GitHub team.

  • Visual Studio 2022 Getting VS Code 'Command Palette' Equivalent

    As any Visual Studio Code user knows, the editor's command palette is a powerful tool for getting things done quickly, without having to navigate through menus and dialogs. Now, we learn how an equivalent is coming for Microsoft's flagship Visual Studio IDE, invoked by the same familiar Ctrl+Shift+P keyboard shortcut.

  • .NET 9 Preview 3: 'I've Been Waiting 9 Years for This API!'

    Microsoft's third preview of .NET 9 sees a lot of minor tweaks and fixes with no earth-shaking new functionality, but little things can be important to individual developers.

  • Data Anomaly Detection Using a Neural Autoencoder with C#

    Dr. James McCaffrey of Microsoft Research tackles the process of examining a set of source data to find data items that are different in some way from the majority of the source items.

Subscribe on YouTube