Overlay 2.0 (#12)

src/core/services/tokenizer/parser-enrichment-worker-thread.ts

@@ -0,0 +1,25 @@
+import { parentPort } from 'node:worker_threads';
+import type { MergedToken } from '../../../types';
+import { enrichTokensWithMecabPos1 } from './parser-enrichment-stage';
+
+interface WorkerRequest {
+  id: number;
+  tokens: MergedToken[];
+  mecabTokens: MergedToken[] | null;
+}
+
+if (!parentPort) {
+  throw new Error('parser-enrichment worker missing parent port');
+}
+
+const port = parentPort;
+
+port.on('message', (message: WorkerRequest) => {
+  try {
+    const result = enrichTokensWithMecabPos1(message.tokens, message.mecabTokens);
+    port.postMessage({ id: message.id, result });
+  } catch (error) {
+    const messageText = error instanceof Error ? error.message : String(error);
+    port.postMessage({ id: message.id, error: messageText });
+  }
+});