add optional logging, cleanup fixes

electron/fileUtil.js

@@ -0,0 +1,15 @@
+const fs = require("fs");
+
+function isWritable(filePath) {
+  let fileAccess = false;
+  try {
+    fs.closeSync(fs.openSync(filePath, "r+"));
+    fileAccess = true;
+  } catch {
+  }
+  return fileAccess;
+}
+
+module.exports = {
+  isWritable,
+};