fix worker

Author: severo

apps/hyparquet-demo/src/workers/parquetWorkerClient.ts

@@ -1,3 +1,6 @@
+import ParquetWorker from './parquetWorker?worker&inline'
+/// ^ the worker is bundled with the main thread code (inline) which is easier for users to import
+/// (no need to copy the worker file to the right place)
 import { ColumnData } from 'hyparquet'
 import type { ParquetMessage, ParquetReadWorkerOptions, Row } from './types.d.ts'
 
@@ -12,7 +15,7 @@ const pending = new Map<number, QueryAgent>()
 
 function getWorker() {
   if (!worker) {
-    worker = new Worker(new URL('./parquetWorker', import.meta.url))
+    worker = new ParquetWorker()
     worker.onmessage = ({ data }: { data: ParquetMessage }) => {
       const pendingQueryAgent = pending.get(data.queryId)
       if (!pendingQueryAgent) {