Improve code quality and write tests

node_modules/@babel/helper-hoist-variables/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/helper-hoist-variables/README.md

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+# @babel/helper-hoist-variables
+
+> Helper function to hoist variables
+
+See our website [@babel/helper-hoist-variables](https://babeljs.io/docs/en/next/babel-helper-hoist-variables.html) for more information.
+
+## Install
+
+Using npm:
+
+```sh
+npm install --save-dev @babel/helper-hoist-variables
+```
+
+or using yarn:
+
+```sh
+yarn add @babel/helper-hoist-variables --dev
+```

node_modules/@babel/helper-hoist-variables/lib/index.js

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+"use strict";
+
+Object.defineProperty(exports, "__esModule", {
+  value: true
+});
+exports.default = _default;
+
+function t() {
+  const data = _interopRequireWildcard(require("@babel/types"));
+
+  t = function () {
+    return data;
+  };
+
+  return data;
+}
+
+function _interopRequireWildcard(obj) { if (obj && obj.__esModule) { return obj; } else { var newObj = {}; if (obj != null) { for (var key in obj) { if (Object.prototype.hasOwnProperty.call(obj, key)) { var desc = Object.defineProperty && Object.getOwnPropertyDescriptor ? Object.getOwnPropertyDescriptor(obj, key) : {}; if (desc.get || desc.set) { Object.defineProperty(newObj, key, desc); } else { newObj[key] = obj[key]; } } } } newObj.default = obj; return newObj; } }
+
+const visitor = {
+  Scope(path, state) {
+    if (state.kind === "let") path.skip();
+  },
+
+  Function(path) {
+    path.skip();
+  },
+
+  VariableDeclaration(path, state) {
+    if (state.kind && path.node.kind !== state.kind) return;
+    const nodes = [];
+    const declarations = path.get("declarations");
+    let firstId;
+
+    for (const declar of declarations) {
+      firstId = declar.node.id;
+
+      if (declar.node.init) {
+        nodes.push(t().expressionStatement(t().assignmentExpression("=", declar.node.id, declar.node.init)));
+      }
+
+      for (const name of Object.keys(declar.getBindingIdentifiers())) {
+        state.emit(t().identifier(name), name, declar.node.init !== null);
+      }
+    }
+
+    if (path.parentPath.isFor({
+      left: path.node
+    })) {
+      path.replaceWith(firstId);
+    } else {
+      path.replaceWithMultiple(nodes);
+    }
+  }
+
+};
+
+function _default(path, emit, kind = "var") {
+  path.traverse(visitor, {
+    kind,
+    emit
+  });
+}

node_modules/@babel/helper-hoist-variables/package.json

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+{
+  "_args": [
+    [
+      "@babel/helper-hoist-variables@7.4.4",
+      "E:\\python\\setup-php"
+    ]
+  ],
+  "_from": "@babel/helper-hoist-variables@7.4.4",
+  "_id": "@babel/helper-hoist-variables@7.4.4",
+  "_inBundle": false,
+  "_integrity": "sha512-VYk2/H/BnYbZDDg39hr3t2kKyifAm1W6zHRfhx8jGjIHpQEBv9dry7oQ2f3+J703TLu69nYdxsovl0XYfcnK4w==",
+  "_location": "/@babel/helper-hoist-variables",
+  "_phantomChildren": {},
+  "_requested": {
+    "type": "version",
+    "registry": true,
+    "raw": "@babel/helper-hoist-variables@7.4.4",
+    "name": "@babel/helper-hoist-variables",
+    "escapedName": "@babel%2fhelper-hoist-variables",
+    "scope": "@babel",
+    "rawSpec": "7.4.4",
+    "saveSpec": null,
+    "fetchSpec": "7.4.4"
+  },
+  "_requiredBy": [
+    "/@babel/helper-call-delegate",
+    "/@babel/plugin-transform-modules-systemjs"
+  ],
+  "_resolved": "https://registry.npmjs.org/@babel/helper-hoist-variables/-/helper-hoist-variables-7.4.4.tgz",
+  "_spec": "7.4.4",
+  "_where": "E:\\python\\setup-php",
+  "dependencies": {
+    "@babel/types": "^7.4.4"
+  },
+  "description": "Helper function to hoist variables",
+  "gitHead": "2c88694388831b1e5b88e4bbed6781eb2be1edba",
+  "license": "MIT",
+  "main": "lib/index.js",
+  "name": "@babel/helper-hoist-variables",
+  "publishConfig": {
+    "access": "public"
+  },
+  "repository": {
+    "type": "git",
+    "url": "https://github.com/babel/babel/tree/master/packages/babel-helper-hoist-variables"
+  },
+  "version": "7.4.4"
+}