diff --git a/src/IndexedDBWorker.js b/src/IndexedDBWorker.js
deleted file mode 100644
index 0e373caf..00000000
--- a/src/IndexedDBWorker.js
+++ /dev/null
@@ -1,5 +0,0 @@
-import { IndexedDBStoreWorker } from "matrix-js-sdk/src/indexeddb-worker";
-
-const remoteWorker = new IndexedDBStoreWorker(self.postMessage);
-
-self.onmessage = remoteWorker.onMessage;
diff --git a/src/IndexedDBWorker.ts b/src/IndexedDBWorker.ts
new file mode 100644
index 00000000..a9ddecde
--- /dev/null
+++ b/src/IndexedDBWorker.ts
@@ -0,0 +1,6 @@
+import { IndexedDBStoreWorker } from "matrix-js-sdk/src/indexeddb-worker";
+
+// eslint-disable-next-line @typescript-eslint/no-explicit-any
+const remoteWorker = new IndexedDBStoreWorker((self as any).postMessage);
+
+self.onmessage = remoteWorker.onMessage;