Improve code quality and write tests

node_modules/@babel/plugin-transform-reserved-words/lib/index.js

@@ -0,0 +1,43 @@
+"use strict";
+
+Object.defineProperty(exports, "__esModule", {
+  value: true
+});
+exports.default = void 0;
+
+function _helperPluginUtils() {
+  const data = require("@babel/helper-plugin-utils");
+
+  _helperPluginUtils = function () {
+    return data;
+  };
+
+  return data;
+}
+
+function _core() {
+  const data = require("@babel/core");
+
+  _core = function () {
+    return data;
+  };
+
+  return data;
+}
+
+var _default = (0, _helperPluginUtils().declare)(api => {
+  api.assertVersion(7);
+  return {
+    name: "transform-reserved-words",
+    visitor: {
+      "BindingIdentifier|ReferencedIdentifier"(path) {
+        if (!_core().types.isValidES3Identifier(path.node.name)) {
+          path.scope.rename(path.node.name);
+        }
+      }
+
+    }
+  };
+});
+
+exports.default = _default;