Improve code quality and write tests

node_modules/@babel/plugin-proposal-dynamic-import/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-proposal-dynamic-import/README.md

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+# @babel/plugin-proposal-dynamic-import
+
+> Transform import() expressions
+
+See our website [@babel/plugin-proposal-dynamic-import](https://babeljs.io/docs/en/next/babel-plugin-proposal-dynamic-import.html) for more information.
+
+## Install
+
+Using npm:
+
+```sh
+npm install --save-dev @babel/plugin-proposal-dynamic-import
+```
+
+or using yarn:
+
+```sh
+yarn add @babel/plugin-proposal-dynamic-import --dev
+```

node_modules/@babel/plugin-proposal-dynamic-import/lib/index.js

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+"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 _pluginSyntaxDynamicImport() {
+  const data = _interopRequireDefault(require("@babel/plugin-syntax-dynamic-import"));
+
+  _pluginSyntaxDynamicImport = function () {
+    return data;
+  };
+
+  return data;
+}
+
+var _package = require("../package.json");
+
+function _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }
+
+const SUPPORTED_MODULES = ["commonjs", "amd", "systemjs"];
+const MODULES_NOT_FOUND = `\
+@babel/plugin-proposal-dynamic-import depends on a modules
+transform plugin. Supported plugins are:
+ - @babel/plugin-transform-modules-commonjs ^7.4.0
+ - @babel/plugin-transform-modules-amd ^7.4.0
+ - @babel/plugin-transform-modules-systemjs ^7.4.0
+
+If you are using Webpack or Rollup and thus don't want
+Babel to transpile your imports and exports, you can use
+the @babel/plugin-syntax-dynamic-import plugin and let your
+bundler handle dynamic imports.
+`;
+
+var _default = (0, _helperPluginUtils().declare)(api => {
+  api.assertVersion(7);
+  return {
+    name: "proposal-dynamic-import",
+    inherits: _pluginSyntaxDynamicImport().default,
+
+    pre() {
+      this.file.set("@babel/plugin-proposal-dynamic-import", _package.version);
+    },
+
+    visitor: {
+      Program() {
+        const modules = this.file.get("@babel/plugin-transform-modules-*");
+
+        if (!SUPPORTED_MODULES.includes(modules)) {
+          throw new Error(MODULES_NOT_FOUND);
+        }
+      }
+
+    }
+  };
+});
+
+exports.default = _default;

node_modules/@babel/plugin-proposal-dynamic-import/package.json

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+{
+  "_args": [
+    [
+      "@babel/plugin-proposal-dynamic-import@7.5.0",
+      "E:\\python\\setup-php"
+    ]
+  ],
+  "_from": "@babel/plugin-proposal-dynamic-import@7.5.0",
+  "_id": "@babel/plugin-proposal-dynamic-import@7.5.0",
+  "_inBundle": false,
+  "_integrity": "sha512-x/iMjggsKTFHYC6g11PL7Qy58IK8H5zqfm9e6hu4z1iH2IRyAp9u9dL80zA6R76yFovETFLKz2VJIC2iIPBuFw==",
+  "_location": "/@babel/plugin-proposal-dynamic-import",
+  "_phantomChildren": {},
+  "_requested": {
+    "type": "version",
+    "registry": true,
+    "raw": "@babel/plugin-proposal-dynamic-import@7.5.0",
+    "name": "@babel/plugin-proposal-dynamic-import",
+    "escapedName": "@babel%2fplugin-proposal-dynamic-import",
+    "scope": "@babel",
+    "rawSpec": "7.5.0",
+    "saveSpec": null,
+    "fetchSpec": "7.5.0"
+  },
+  "_requiredBy": [
+    "/@babel/preset-env"
+  ],
+  "_resolved": "https://registry.npmjs.org/@babel/plugin-proposal-dynamic-import/-/plugin-proposal-dynamic-import-7.5.0.tgz",
+  "_spec": "7.5.0",
+  "_where": "E:\\python\\setup-php",
+  "dependencies": {
+    "@babel/helper-plugin-utils": "^7.0.0",
+    "@babel/plugin-syntax-dynamic-import": "^7.2.0"
+  },
+  "description": "Transform import() expressions",
+  "devDependencies": {
+    "@babel/core": "^7.5.0",
+    "@babel/helper-plugin-test-runner": "^7.0.0"
+  },
+  "gitHead": "49da9a07c81156e997e60146eb001ea77b7044c4",
+  "keywords": [
+    "babel-plugin"
+  ],
+  "license": "MIT",
+  "main": "lib/index.js",
+  "name": "@babel/plugin-proposal-dynamic-import",
+  "peerDependencies": {
+    "@babel/core": "^7.0.0-0"
+  },
+  "publishConfig": {
+    "access": "public"
+  },
+  "repository": {
+    "type": "git",
+    "url": "https://github.com/babel/babel/tree/master/packages/babel-plugin-proposal-dynamic-import"
+  },
+  "version": "7.5.0"
+}