The official editor companion for DotReact applications: React and ordinary TSX ergonomics in .drx files, with ASP.NET Core remaining the backend and security authority.

Features

Syntax highlighting, completion, formatting, navigation and React tooling through VS Code's built-in TypeScript React language service.
Semantic project diagnostics from the same dotreact-check authority used by CI and production builds.
Check-on-save validation with debouncing and one coalesced checker per workspace, avoiding duplicate processes during save bursts.
CodeLens navigation from page.drx to a colocated page.server.cs loader, with a compatibility fallback for explicitly registered loaders.
A lightweight project-health item in the status bar and a dedicated DotReact output channel for debugging validation failures.
Support for current app/ routes and legacy src/pages/ projects.

DotReact never parses or evaluates C# inside a .drx file. The bridge between the two runtimes is made of generated TypeScript contracts and explicitly registered C# page loaders and Server Actions.

Commands

Open the Command Palette (Ctrl+Shift+P) and run:

DotReact: Check Project
DotReact: Open C# Loader
DotReact: Show Validation Output
DotReact: Open Documentation

Settings

{
  "dotreact.checkOnSave": true,
  "dotreact.validation.debounceMs": 350
}

The checker executes the framework tool installed by the project. VS Code keeps that operation disabled in Restricted Mode; trust the workspace only when you trust its source and dependencies. Virtual workspaces can still display .drx as TypeScript React, but cannot execute the local project checker.

Install a local VSIX

Until the Marketplace release is available:

npm ci
npm run package:vsix -w dotreact-vscode
code --install-extension editors/vscode-dotreact/dotreact-vscode.vsix

The package workflow also uploads a tested VSIX artifact for every vscode-v* tag and manual run.

Development

npm run build -w dotreact-vscode
npm test -w dotreact-vscode
npm run test:integration -w dotreact-vscode

The integration suite launches a real VS Code Extension Host, opens a .drx document and verifies language association, activation and registered commands.

See RELEASE.md for the controlled Marketplace release process.