not baad

mapPatchWorker.js

@@ -0,0 +1,11 @@
+import { generatePatch } from "./mapPatch.js";
+
+self.onmessage = (event) => {
+  const { id, world, rect, options } = event.data || {};
+  try {
+    const result = generatePatch(world, rect, options || {});
+    self.postMessage({ id, ok: true, world, result });
+  } catch (error) {
+    self.postMessage({ id, ok: false, error: error?.message || String(error), stack: error?.stack || "" });
+  }
+};