Improve code quality and write tests

node_modules/@babel/plugin-transform-regenerator/LICENSE

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+MIT License
+
+Copyright (c) 2014-present Sebastian McKenzie and other contributors
+
+Permission is hereby granted, free of charge, to any person obtaining
+a copy of this software and associated documentation files (the
+"Software"), to deal in the Software without restriction, including
+without limitation the rights to use, copy, modify, merge, publish,
+distribute, sublicense, and/or sell copies of the Software, and to
+permit persons to whom the Software is furnished to do so, subject to
+the following conditions:
+
+The above copyright notice and this permission notice shall be
+included in all copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
+LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
+OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
+WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.

node_modules/@babel/plugin-transform-regenerator/README.md

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+# @babel/plugin-transform-regenerator
+
+> Explode async and generator functions into a state machine.
+
+See our website [@babel/plugin-transform-regenerator](https://babeljs.io/docs/en/next/babel-plugin-transform-regenerator.html) for more information.
+
+## Install
+
+Using npm:
+
+```sh
+npm install --save-dev @babel/plugin-transform-regenerator
+```
+
+or using yarn:
+
+```sh
+yarn add @babel/plugin-transform-regenerator --dev
+```

node_modules/@babel/plugin-transform-regenerator/lib/index.js

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+"use strict";
+
+Object.defineProperty(exports, "__esModule", {
+  value: true
+});
+Object.defineProperty(exports, "default", {
+  enumerable: true,
+  get: function () {
+    return _regeneratorTransform().default;
+  }
+});
+
+function _regeneratorTransform() {
+  const data = _interopRequireDefault(require("regenerator-transform"));
+
+  _regeneratorTransform = function () {
+    return data;
+  };
+
+  return data;
+}
+
+function _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }

node_modules/@babel/plugin-transform-regenerator/package.json

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+{
+  "_args": [
+    [
+      "@babel/plugin-transform-regenerator@7.4.5",
+      "E:\\python\\setup-php"
+    ]
+  ],
+  "_from": "@babel/plugin-transform-regenerator@7.4.5",
+  "_id": "@babel/plugin-transform-regenerator@7.4.5",
+  "_inBundle": false,
+  "_integrity": "sha512-gBKRh5qAaCWntnd09S8QC7r3auLCqq5DI6O0DlfoyDjslSBVqBibrMdsqO+Uhmx3+BlOmE/Kw1HFxmGbv0N9dA==",
+  "_location": "/@babel/plugin-transform-regenerator",
+  "_phantomChildren": {},
+  "_requested": {
+    "type": "version",
+    "registry": true,
+    "raw": "@babel/plugin-transform-regenerator@7.4.5",
+    "name": "@babel/plugin-transform-regenerator",
+    "escapedName": "@babel%2fplugin-transform-regenerator",
+    "scope": "@babel",
+    "rawSpec": "7.4.5",
+    "saveSpec": null,
+    "fetchSpec": "7.4.5"
+  },
+  "_requiredBy": [
+    "/@babel/preset-env"
+  ],
+  "_resolved": "https://registry.npmjs.org/@babel/plugin-transform-regenerator/-/plugin-transform-regenerator-7.4.5.tgz",
+  "_spec": "7.4.5",
+  "_where": "E:\\python\\setup-php",
+  "author": {
+    "name": "Ben Newman",
+    "email": "bn@cs.stanford.edu"
+  },
+  "dependencies": {
+    "regenerator-transform": "^0.14.0"
+  },
+  "description": "Explode async and generator functions into a state machine.",
+  "devDependencies": {
+    "@babel/core": "^7.4.5",
+    "@babel/helper-plugin-test-runner": "^7.0.0"
+  },
+  "gitHead": "33ab4f166117e2380de3955a0842985f578b01b8",
+  "homepage": "https://github.com/babel/babel/tree/master/packages/babel-plugin-transform-regenerator",
+  "license": "MIT",
+  "main": "lib/index.js",
+  "name": "@babel/plugin-transform-regenerator",
+  "peerDependencies": {
+    "@babel/core": "^7.0.0-0"
+  },
+  "publishConfig": {
+    "access": "public"
+  },
+  "repository": {
+    "type": "git",
+    "url": "https://github.com/babel/babel/tree/master/packages/babel-plugin-transform-regenerator"
+  },
+  "version": "7.4.5"
+}