Fix minor issues

src/server/index.ts

@@ -1,4 +1,4 @@
-const { mkdir } = require('node:fs/promises');
+import { mkdir } from 'node:fs/promises';
 import * as api from "@actual-app/api";
 import { ServerConfig } from "@/types/config";
 import { Transaction } from "@/types/transaction";

tsconfig.json

@@ -2,6 +2,7 @@
   "compilerOptions": {
     "target": "ES2023",
     "module": "commonjs",
+    "moduleResolution": "Node",
     "outDir": "./dist",
     "rootDir": "./src",
     "allowJs": true,