Syntax highlighting and language intelligence for .uetkx markup (ReactiveUI for Unreal). Markup completion/hover/formatting from the compiler-exported schema; compiler diagnostics via sidecars — fully
Editor support for .uetkx, the JSX-like markup of ReactiveUI for Unreal — a React-style reactive UI library for Unreal Engine 5.6+, in pure C++.
Features
Syntax highlighting for the JSX-like markup and the embedded C++, via a self-contained TextMate grammar.
Markup IntelliSense — completion and hover for host-element tags, structural/common attributes, style/slot keys, and per-element event handlers, driven by the compiler-exported schema.
Import intelligence — specifier and exported-name completions, go-to-definition across .uetkx files, and strict resolution diagnostics.
Diagnostics — live parse diagnostics plus the compiler's own diagnostics surfaced from committed sidecars — fully offline, no running Unreal editor required.
Formatting — canonical .uetkx formatting (golden-corpus locked to the C++ compiler), with an optional Format on Save (Tools ▸ Options ▸ ReactiveUI ▸ UETKX).
Requirements
Everything is bundled — the language server ships with the extension (a Node runtime is included), so no Node on your PATH and no running Unreal editor are required.
Changelog
[0.1.1] - 2026-07-13
Added the ReactiveUI brand icon to the marketplace listing.
[0.1.0] - 2026-07-13
First beta — .uetkx language support for VS Code and Visual Studio 2022: schema-driven tag/attribute/event completions and hover, live parse diagnostics, import intelligence (specifier + name completions, go-to-definition, and strict resolution diagnostics), golden-corpus formatting, and embedded-C++ awareness. Visual Studio 2022 adds a Tools > Options Format-on-Save setting.
