release: WRNexusJS 0.8.0

editors/vscode/src/extension.js

@@ -2,6 +2,8 @@
 "use strict";
 
 const vscode = require("vscode");
+const path = require("node:path");
+const { LanguageClient, TransportKind } = require("vscode-languageclient/node");
 
 const { formatWrn } = require("./formatter");
 
@@ -329,7 +331,7 @@ async function recoverWrnLanguage(document) {
  *
  * @param {vscode.ExtensionContext} context
  */
-function activate(context) {
+async function activate(context) {
   for (const document of vscode.workspace.textDocuments) {
     void recoverWrnLanguage(document);
   }
@@ -340,12 +342,43 @@ function activate(context) {
     }),
   );
 
-  registerDiagnostics(context);
-  registerCompilerDiagnostics(context);
-  registerCompletionProvider(context);
-  registerDefinitionProvider(context);
-  registerComponentIntelligence(context);
-  registerFormatter(context);
+  const useLanguageServer = vscode.workspace
+    .getConfiguration("wrnexus")
+    .get("languageServer.enable", true);
+  let languageServerStarted = false;
+  if (useLanguageServer) {
+    const module = path.join(context.extensionPath, "src", "language-server.cjs");
+    const serverOptions = {
+      run: { module, transport: TransportKind.stdio },
+      debug: { module, transport: TransportKind.stdio, options: { execArgv: ["--nolazy"] } },
+    };
+    const client = new LanguageClient(
+      "wrnexusLanguageServer",
+      "WRNexus Language Server",
+      serverOptions,
+      {
+        documentSelector: [{ scheme: "file", language: WRN_LANGUAGE_ID }],
+      },
+    );
+    try {
+      await client.start();
+      languageServerStarted = true;
+      context.subscriptions.push({ dispose: () => void client.stop() });
+    } catch (error) {
+      console.warn(
+        "[wrnexus] language server failed to start; using built-in providers.",
+        error instanceof Error ? error.message : String(error),
+      );
+    }
+  }
+  if (!languageServerStarted) {
+    registerDiagnostics(context);
+    registerCompilerDiagnostics(context);
+    registerCompletionProvider(context);
+    registerDefinitionProvider(context);
+    registerComponentIntelligence(context);
+    registerFormatter(context);
+  }
   registerSemanticTokens(context);
   registerV060LanguageFeatures(context);
 }