according to https://www.joeshaw.org/dont-defer-close-on-writable-files/ one should not use defer file.close(), its a bad pattern

examples/defer/defer.go

@@ -40,5 +40,9 @@ func writeFile(f *os.File) {
 
 func closeFile(f *os.File) {
 	fmt.Println("closing")
-	f.Close()
+	err := f.Close()
+	if err != nil {
+		_, _ = fmt.Fprintf(os.Stderr, "error: %v\n", err)
+		os.Exit(1)
+	}
 }