Best of DevBlogs — August 2025

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   DevBlogs·42w

   Announcing TypeScript 5.9

   TypeScript 5.9 introduces several developer experience improvements including a streamlined tsc --init that generates minimal configuration files with modern defaults, support for ECMAScript's import defer syntax for deferred module evaluation, and a stable --module node20 option. The release also enhances editor tooling with expandable hover tooltips, configurable hover length, and improved DOM API documentation with summary descriptions. Performance optimizations include better type instantiation caching and reduced closure creation in file system operations.

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   DevBlogs·41w

   PowerToys 0.93 is here: faster Command Palette, new dashboard UX and more

   PowerToys 0.93 introduces significant performance improvements through AOT compilation, reducing startup memory by 15%, load time by 40%, and installation size by 55%. The release features a redesigned Settings dashboard with clearer utility toggles and shortcuts, a new Spotlight mode for Mouse Highlighter that dims the entire screen except around the cursor, and enhanced Command Palette functionality including restored clipboard history and app pinning capabilities.

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   DevBlogs·40w

   A C# Guide with Ollama

   GPT-OSS is OpenAI's first open-weight model since GPT-2, offering developers powerful AI capabilities without cloud dependency. The guide demonstrates how to build a local AI chat application using C# and Ollama, leveraging Microsoft.Extensions.AI libraries for unified abstractions. The 20B model runs on just 16GB of memory, making it accessible for local development. The tutorial covers setting up a console app, adding necessary NuGet packages, implementing streaming chat with conversation history, and preparing for advanced scenarios like function calling and agentic applications.

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   DevBlogs·41w

   Go 1.25.0-1 Microsoft build now available

   Microsoft released Go 1.25.0-1 with system-provided cryptography enabled by default (OpenSSL on Linux, CNG on Windows) and introduced opt-out telemetry collection. The build aligns with Microsoft's security policies but may require action for Linux builds without cgo or distroless containers. Users can disable systemcrypto via GOEXPERIMENT=nosystemcrypto and telemetry via MS_GOTOOLCHAIN_TELEMETRY_ENABLED=0.

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