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

extra/download-dist.js

@@ -26,16 +26,15 @@ function download(url) {
         if (response.statusCode === 200) {
             console.log("Extracting dist...");
 
+function handleDirectoryCleanup() {
     if (fs.existsSync("./dist")) {
-
         if (fs.existsSync("./dist-backup")) {
-                    rmSync("./dist-backup", {
-                        recursive: true
-                    });
+            rmSync("./dist-backup", { recursive: true });
         }
-
         fs.renameSync("./dist", "./dist-backup");
     }
+}
+            }
 
             const tarStream = tar.x({
                 cwd: "./",