new: Add MCP support to extension. (#86)

* deps(moon): Update to v1.38.

* Add mcp.

Author: milesj

package.json

@@ -13,7 +13,7 @@
   ],
   "devDependencies": {
     "@babel/core": "^7.27.1",
-    "@moonrepo/cli": "^1.36.0",
+    "@moonrepo/cli": "^1.38.5",
     "@moonrepo/dev": "workspace:*",
     "eslint": "^9.27.0",
     "jest": "^29.7.0",

packages/vscode-extension/CHANGELOG.md

@@ -1,3 +1,7 @@
+## 0.15.0
+
+- Added MCP support. Requires VS Code v1.102.0.
+
 ## 0.14.0
 
 - Added support for the task graph. Requires moon v1.30.

packages/vscode-extension/package.json

@@ -1,6 +1,6 @@
 {
   "private": true,
-  "version": "0.14.0",
+  "version": "0.15.0",
   "name": "moon-console",
   "publisher": "moonrepo",
   "displayName": "moon console",
@@ -21,7 +21,7 @@
     "tasks"
   ],
   "engines": {
-    "vscode": "^1.77.0"
+    "vscode": "^1.90.0"
   },
   "categories": [
     "Testing",
@@ -169,6 +169,12 @@
         "icon": "$(open-preview)"
       }
     ],
+    "mcpServerDefinitionProviders": [
+      {
+        "id": "moonMcpProvider",
+        "label": "moon MCP Server Provider"
+      }
+    ],
     "menus": {
       "commandPalette": [
         {
@@ -348,14 +354,14 @@
   "dependencies": {
     "@moonrepo/report": "^1.4.0",
     "execa": "^5.1.1",
-    "semver": "^7.7.1"
+    "semver": "^7.7.2"
   },
   "devDependencies": {
-    "@moonrepo/types": "^1.28.0",
-    "@types/semver": "^7.5.8",
-    "@types/vscode": "1.77.0",
-    "@vscode/test-electron": "^2.4.1",
-    "esbuild": "^0.25.1",
-    "vsce": "^2.15.0"
+    "@moonrepo/types": "^1.30.1",
+    "@types/semver": "^7.7.0",
+    "@types/vscode": "1.102.0",
+    "@vscode/test-electron": "^2.5.2",
+    "@vscode/vsce": "^3.6.0",
+    "esbuild": "^0.25.6"
   }
 }

packages/vscode-extension/src/extension.ts

@@ -14,6 +14,7 @@ export function activate(context: vscode.ExtensionContext) {
 	const workspace = new Workspace();
 	const projectsProvider = new ProjectsProvider(context, workspace, 'category');
 	const tagsProvider = new ProjectsProvider(context, workspace, 'tag');
+	const didChangeEmitter = new vscode.EventEmitter<void>();
 
 	context.subscriptions.push(
 		vscode.commands.registerCommand('moon.openSettings', () =>
@@ -52,6 +53,18 @@ export function activate(context: vscode.ExtensionContext) {
 			'moonLastRun',
 			new LastRunProvider(context, workspace),
 		),
+
+		// Support MCP
+		vscode.lm.registerMcpServerDefinitionProvider('moonMcpProvider', {
+			onDidChangeMcpServerDefinitions: didChangeEmitter.event,
+			provideMcpServerDefinitions: async () => {
+				return [
+					new vscode.McpStdioServerDefinition('moon', 'moon', ['mcp'], {
+						MOON_WORKSPACE_ROOT: '${workspaceFolder}',
+					}),
+				];
+			},
+		}),
 	);
 }
 

packages/vscode-extension/src/projectsView.ts

@@ -4,6 +4,7 @@ import vscode, {
 	Disposable,
 	type Event,
 	EventEmitter,
+	type IconPath,
 	TaskGroup,
 	ThemeIcon,
 	TreeItem,
@@ -36,17 +37,17 @@ const LANGUAGE_MANIFESTS: Record<LanguageType, string> = {
 };
 
 // https://devicon.dev
-function createLangIcon(context: vscode.ExtensionContext, name: LanguageType) {
-	const icon = context.asAbsolutePath(path.join(`assets/langs/${name}.svg`));
+function createLangIcon(context: vscode.ExtensionContext, name: LanguageType): IconPath {
+	const icon = vscode.Uri.joinPath(context.extensionUri, `assets/langs/${name}.svg`);
 
-	if (fs.existsSync(icon)) {
+	if (fs.existsSync(icon.fsPath)) {
 		return {
 			dark: icon,
 			light: icon,
 		};
 	}
 
-	const unknown = context.asAbsolutePath(path.join('assets/langs/unknown.svg'));
+	const unknown = vscode.Uri.joinPath(context.extensionUri, 'assets/langs/unknown.svg');
 
 	return {
 		dark: unknown,