microsoft/microsoft-ui-reactor v0.1.0-preview.15

Reactor 0.1.0-preview.15

Repository: microsoft/microsoft-ui-reactor

Tag: v0.1.0-preview.15

Published: 2026-09-11T08:23:34Z

Prerelease: yes

Release notes: Reactor 0.1.0-preview.15

> Interim distribution — see spec 022 for the rollout plan.

New in this release

Reactor.VsExtension.vsix — very rough, experimental live embedded preview for Visual Studio 2022. This is the roughest surface in the experimental Reactor repo; expect install friction, solution-load races, HWND/DPI edge cases, and breaking changes. Requires Windows 11 23H2+ and WinAppSDK 1.6+. See VS extension guide or src/vs-reactor/README.md. Phase 1 dev distribution may be unsigned.

Five assets

Microsoft.UI.Reactor.0.1.0-preview.15.nupkg — the framework

Drop into a folder and add a NuGet source pointing at it:

Then in your .csproj:

Microsoft.UI.Reactor.Advanced.0.1.0-preview.15.nupkg — optional Win2D/advanced controls

Versioned in lock-step with the framework package.

Microsoft.UI.Reactor.Devtools.0.1.0-preview.15.nupkg — optional devtools host (debug + VS preview)

Referenced by the scaffolded dotnet new reactorapp csproj in a Debug-only ItemGroup, paired with RuntimeHostConfigurationOption Reactor.DevtoolsSupport=true. Required to light up the right-click devtools menu in Debug F5 launches and for the Reactor VS embedded preview extension's embed-host activation. Versioned in lock-step with the framework package.

reactor-skill-kit-0.1.0-preview.15.zip — agent skill bundle + mur CLI

Extract, then run:

cd reactor
.\install-skill-kit.ps1

Installs to ~/.claude/skills/reactor/ and adds bin/ to your user PATH. After a new shell, mur --version should resolve.

Reactor.VsExtension.vsix — Visual Studio 2022 embedded preview

Double-click to install per-user, or install into the Experimental hive for smoke testing. This VSIX is intentionally rougher than the rest of the release assets and should be treated as an experimental feedback vehicle, not a stable workflow. See src/vs-reactor/TESTING.md before release promotion.

What's Changed

• Clear all 17 Component Governance alerts in the RN harness lockfiles by @azchohfi in https://github.com/microsoft/microsoft-ui-reactor/pull/1169
• Build(deps): bump browserslist from 4.28.2 to 4.28.8 in /tests/stress_perf_rn/VirtualList by @dependabot[bot] in https://github.com/microsoft/microsoft-ui-reactor/pull/1170
• Build(deps-dev): bump @faker-js/faker from 9.9.0 to 10.5.0 in /samples/apps/headtrax/service by @dependabot[bot] in https://github.com/microsoft/microsoft-ui-reactor/pull/1172
• Fix HeadTrax sample server: use @as-integrations/express4 for Apollo Server 5 by @azchohfi in https://github.com/microsoft/microsoft-ui-reactor/pull/1175
• Build(deps): bump browserslist from 4.28.2 to 4.28.8 in /tests/stress_perf_rn/StocksGrid by @dependabot[bot] in https://github.com/microsoft/microsoft-ui-reactor/pull/1171
• Fix lint and TypeScript errors across the three React Native harness projects by @azchohfi in https://github.com/microsoft/microsoft-ui-reactor/pull/1176
• deps(vscode): bump @types/node from 26.3.0 to 26.4.1 in /src/vscode-reactor by @dependabot[bot] in https://github.com/microsoft/microsoft-ui-reactor/pull/1179
• deps: Windows NuGet updates by @azchohfi in https://github.com/microsoft/microsoft-ui-reactor/pull/1186
• Build(deps): bump js-yaml from 3.15.1 to 3.15.2 in /tests/stress_perf_rn/StocksGrid by @dependabot[bot] in https://github.com/microsoft/microsoft-ui-reactor/pull/1188
• Build(deps): bump joi from 17.13.3 to 17.13.7 in /tests/stress_perf_rn/VirtualList by @dependabot[bot] in https://github.com/microsoft/microsoft-ui-reactor/pull/1187
• Add CI coverage for the repo's npm projects by @azchohfi in https://github.com/microsoft/microsoft-ui-reactor/pull/1178
• Support binary icon sources for tray, overlay and thumbnail icons by @azchohfi in https://github.com/microsoft/microsoft-ui-reactor/pull/1191
• Build(deps): bump baseline-browser-mapping from 2.10.25 to 2.11.21 in /tests/startup_perf/BlankRNW by @dependabot[bot] in https://github.com/microsoft/microsoft-ui-reactor/pull/1189
• Build(deps): bump joi from 17.13.3 to 17.13.7 in /tests/startup_perf/BlankRNW by @dependabot[bot] in https://github.com/microsoft/microsoft-ui-reactor/pull/1190
• Build(deps): bump browserslist from 4.28.2 to 4.28.9 in /tests/startup_perf/BlankRNW by @dependabot[bot] in https://github.com/microsoft/microsoft-ui-reactor/pull/1174
• Add REACTOR_ICON_001 for WindowIcon source kinds a surface silently skips by @azchohfi in https://github.com/microsoft/microsoft-ui-reactor/pull/1194
• Cover the CleanElement resets REACTOR_POOL_001 could not see, and stop leaking IsTabStop by @azchohfi in https://github.com/microsoft/microsoft-ui-reactor/pull/1195
• Add struct-typed overloads for .Margin / .Padding / .CornerRadius by @azchohfi in https://github.com/microsoft/microsoft-ui-reactor/pull/1196
• deps: roll GitHub.Copilot.SDK back to 1.0.11 by @azchohfi in https://github.com/microsoft/microsoft-ui-reactor/pull/1198
• Fix Markdown list content wrapping by @bkudiess in https://github.com/microsoft/microsoft-ui-reactor/pull/1197
• Publish the docs site per release with a version selector by @azchohfi in https://github.com/microsoft/microsoft-ui-reactor/pull/1199
• Prepare the 0.1.0-preview.15 release by @azchohfi in https://github.com/microsoft/microsoft-ui-reactor/pull/1202

New Contributors

• @bkudiess made their first contribution in https://github.com/microsoft/microsoft-ui-reactor/pull/1197

Full Changelog: https://github.com/microsoft/microsoft-ui-reactor/compare/v0.1.0-preview.14...v0.1.0-preview.15