release: WRNexusJS 0.8.0

packages/language-server/src/server.ts

@@ -36,11 +36,33 @@ function send(value: unknown): void {
 function result(id: JsonRpc["id"], value: unknown): void {
   send({ jsonrpc: "2.0", id, result: value });
 }
+function internalDiagnostic(document: TextDocument, error: unknown) {
+  const message = error instanceof Error ? error.message : String(error);
+  return {
+    range: { start: { line: 0, character: 0 }, end: { line: 0, character: 1 } },
+    severity: 1,
+    code: "WRN-LSP-INTERNAL",
+    source: "wrnexus",
+    message: `WRNexus language analysis failed safely: ${message}`,
+  };
+}
+
+function safeDocumentDiagnostics(document: TextDocument) {
+  try {
+    return documentDiagnostics(document);
+  } catch (error) {
+    process.stderr.write(
+      `[wrnexus-lsp] diagnostics failed for ${document.uri}: ${error instanceof Error ? (error.stack ?? error.message) : String(error)}\n`,
+    );
+    return [internalDiagnostic(document, error)];
+  }
+}
+
 function publish(document: TextDocument): void {
   send({
     jsonrpc: "2.0",
     method: "textDocument/publishDiagnostics",
-    params: { uri: document.uri, diagnostics: documentDiagnostics(document) },
+    params: { uri: document.uri, diagnostics: safeDocumentDiagnostics(document) },
   });
 }
 
@@ -80,7 +102,7 @@ async function handle(message: JsonRpc): Promise<void> {
     case "initialize":
       workspaceRoot = params.rootPath ?? rootFromUri(params.rootUri);
       result(message.id, {
-        serverInfo: { name: "WRNexus Language Server", version: "0.8.0" },
+        serverInfo: { name: "WRNexus Language Server", version: "0.8.3" },
         capabilities: {
           textDocumentSync: 1,
           documentFormattingProvider: true,
@@ -195,7 +217,7 @@ async function handle(message: JsonRpc): Promise<void> {
         result(message.id, []);
         break;
       }
-      const actions: any[] = documentDiagnostics(document)
+      const actions: any[] = safeDocumentDiagnostics(document)
         .filter((item) => item.code === "WRNA11Y001")
         .map((item) => ({
           title: "Add empty alt attribute",
@@ -268,11 +290,36 @@ function consume(): void {
     if (buffer.length < bodyStart + length) return;
     const body = buffer.subarray(bodyStart, bodyStart + length).toString();
     buffer = buffer.subarray(bodyStart + length);
-    void handle(JSON.parse(body));
+    let message: JsonRpc;
+    try {
+      message = JSON.parse(body) as JsonRpc;
+    } catch (error) {
+      process.stderr.write(
+        `[wrnexus-lsp] invalid JSON-RPC payload: ${error instanceof Error ? error.message : String(error)}\n`,
+      );
+      continue;
+    }
+    void handle(message).catch((error) => {
+      const detail = error instanceof Error ? (error.stack ?? error.message) : String(error);
+      process.stderr.write(`[wrnexus-lsp] request failed: ${detail}\n`);
+      if (message.id !== undefined) {
+        send({
+          jsonrpc: "2.0",
+          id: message.id,
+          error: { code: -32603, message: "WRNexus language server request failed", data: detail },
+        });
+      }
+    });
   }
 }
 process.stdin.on("data", (chunk) => {
-  buffer = Buffer.concat([buffer, Buffer.from(chunk)]);
-  consume();
+  try {
+    buffer = Buffer.concat([buffer, Buffer.from(chunk)]);
+    consume();
+  } catch (error) {
+    process.stderr.write(
+      `[wrnexus-lsp] input processing failed: ${error instanceof Error ? (error.stack ?? error.message) : String(error)}\n`,
+    );
+  }
 });
 process.stdin.resume();