Refactor directory checks into a separate function to clean up the download function

extra/download-dist.js

@@ -26,15 +26,14 @@ function download(url) {
         if (response.statusCode === 200) {
             console.log("Extracting dist...");
 
-            if (fs.existsSync("./dist")) {
+function handleDirectoryCleanup() {
-
+    if (fs.existsSync("./dist")) {
-                if (fs.existsSync("./dist-backup")) {
+        if (fs.existsSync("./dist-backup")) {
-                    rmSync("./dist-backup", {
+            rmSync("./dist-backup", { recursive: true });
-                        recursive: true
+        }
-                    });
+        fs.renameSync("./dist", "./dist-backup");
-                }
+    }
-
+}
-                fs.renameSync("./dist", "./dist-backup");
             }
 
             const tarStream = tar.x({