diff --git a/package.json b/package.json
index a37b6242..62c4c0fa 100644
--- a/package.json
+++ b/package.json
@@ -9,7 +9,7 @@
   "scripts": {
     "start": "vite",
     "build": "vite build",
-    "lint": "yarn check:eslint && yarn check:prettier",
+    "lint": "npm run check:eslint && npm run check:prettier",
     "check:eslint": "eslint src/*",
     "check:prettier": "prettier --check .",
     "fix:prettier": "prettier --write .",
diff --git a/src/util/cryptE2ERoomKeys.js b/src/util/cryptE2ERoomKeys.ts
similarity index 100%
rename from src/util/cryptE2ERoomKeys.js
rename to src/util/cryptE2ERoomKeys.ts