feat(auth): implement user authentication system

backend/node_modules/@babel/helper-define-polyfill-provider/LICENSE

@@ -0,0 +1,22 @@
+MIT License
+
+Copyright (c) 2014-present Nicolò Ribaudo 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.

backend/node_modules/@babel/helper-define-polyfill-provider/README.md

@@ -0,0 +1,15 @@
+# @babel/helper-define-polyfill-provider
+
+## Install
+
+Using npm:
+
+```sh
+npm install --save-dev @babel/helper-define-polyfill-provider
+```
+
+or using yarn:
+
+```sh
+yarn add @babel/helper-define-polyfill-provider --dev
+```

backend/node_modules/@babel/helper-define-polyfill-provider/lib/browser/dependencies.js

@@ -0,0 +1,22 @@
+"use strict";
+
+exports.__esModule = true;
+exports.has = has;
+exports.laterLogMissing = laterLogMissing;
+exports.logMissing = logMissing;
+exports.resolve = resolve;
+function resolve(dirname, moduleName, absoluteImports) {
+  if (absoluteImports === false) return moduleName;
+  throw new Error(`"absoluteImports" is not supported in bundles prepared for the browser.`);
+}
+
+// eslint-disable-next-line @typescript-eslint/no-unused-vars
+function has(basedir, name) {
+  return true;
+}
+
+// eslint-disable-next-line @typescript-eslint/no-unused-vars
+function logMissing(missingDeps) {}
+
+// eslint-disable-next-line @typescript-eslint/no-unused-vars
+function laterLogMissing(missingDeps) {}

backend/node_modules/@babel/helper-define-polyfill-provider/lib/debug-utils.js

@@ -0,0 +1,14 @@
+"use strict";
+
+exports.__esModule = true;
+exports.presetEnvSilentDebugHeader = void 0;
+exports.stringifyTargets = stringifyTargets;
+exports.stringifyTargetsMultiline = stringifyTargetsMultiline;
+var _helperCompilationTargets = require("@babel/helper-compilation-targets");
+const presetEnvSilentDebugHeader = exports.presetEnvSilentDebugHeader = "#__secret_key__@babel/preset-env__don't_log_debug_header_and_resolved_targets";
+function stringifyTargetsMultiline(targets) {
+  return JSON.stringify((0, _helperCompilationTargets.prettifyTargets)(targets), null, 2);
+}
+function stringifyTargets(targets) {
+  return JSON.stringify(targets).replace(/,/g, ", ").replace(/^\{"/, '{ "').replace(/"\}$/, '" }');
+}

backend/node_modules/@babel/helper-define-polyfill-provider/lib/define-provider.js

@@ -0,0 +1,9 @@
+"use strict";
+
+exports.__esModule = true;
+exports.defineProvider = defineProvider;
+function defineProvider(factory) {
+  // This will allow us to do some things
+
+  return factory;
+}

backend/node_modules/@babel/helper-define-polyfill-provider/lib/imports-injector.js

@@ -0,0 +1,106 @@
+"use strict";
+
+exports.__esModule = true;
+exports.default = void 0;
+var _babel = _interopRequireWildcard(require("@babel/core"));
+function _interopRequireWildcard(e, t) { if ("function" == typeof WeakMap) var r = new WeakMap(), n = new WeakMap(); return (_interopRequireWildcard = function (e, t) { if (!t && e && e.__esModule) return e; var o, i, f = { __proto__: null, default: e }; if (null === e || "object" != typeof e && "function" != typeof e) return f; if (o = t ? n : r) { if (o.has(e)) return o.get(e); o.set(e, f); } for (const t in e) "default" !== t && {}.hasOwnProperty.call(e, t) && ((i = (o = Object.defineProperty) && Object.getOwnPropertyDescriptor(e, t)) && (i.get || i.set) ? o(f, t, i) : f[t] = e[t]); return f; })(e, t); }
+const {
+  types: t
+} = _babel.default || _babel;
+class ImportsCachedInjector {
+  constructor(resolver, getPreferredIndex) {
+    this._imports = new WeakMap();
+    this._anonymousImports = new WeakMap();
+    this._lastImports = new WeakMap();
+    this._resolver = resolver;
+    this._getPreferredIndex = getPreferredIndex;
+  }
+  storeAnonymous(programPath, url, moduleName, getVal) {
+    const key = this._normalizeKey(programPath, url);
+    const imports = this._ensure(this._anonymousImports, programPath, Set);
+    if (imports.has(key)) return;
+    const node = getVal(programPath.node.sourceType === "script", t.stringLiteral(this._resolver(url)));
+    imports.add(key);
+    this._injectImport(programPath, node, moduleName);
+  }
+  storeNamed(programPath, url, name, moduleName, getVal) {
+    const key = this._normalizeKey(programPath, url, name);
+    const imports = this._ensure(this._imports, programPath, Map);
+    if (!imports.has(key)) {
+      const {
+        node,
+        name: id
+      } = getVal(programPath.node.sourceType === "script", t.stringLiteral(this._resolver(url)), t.identifier(name));
+      imports.set(key, id);
+      this._injectImport(programPath, node, moduleName);
+    }
+    return t.identifier(imports.get(key));
+  }
+  _injectImport(programPath, node, moduleName) {
+    var _this$_lastImports$ge;
+    const newIndex = this._getPreferredIndex(moduleName);
+    const lastImports = (_this$_lastImports$ge = this._lastImports.get(programPath)) != null ? _this$_lastImports$ge : [];
+    const isPathStillValid = path => path.node &&
+    // Sometimes the AST is modified and the "last import"
+    // we have has been replaced
+    path.parent === programPath.node && path.container === programPath.node.body;
+    let last;
+    if (newIndex === Infinity) {
+      // Fast path: we can always just insert at the end if newIndex is `Infinity`
+      if (lastImports.length > 0) {
+        last = lastImports[lastImports.length - 1].path;
+        if (!isPathStillValid(last)) last = undefined;
+      }
+    } else {
+      for (const [i, data] of lastImports.entries()) {
+        const {
+          path,
+          index
+        } = data;
+        if (isPathStillValid(path)) {
+          if (newIndex < index) {
+            const [newPath] = path.insertBefore(node);
+            lastImports.splice(i, 0, {
+              path: newPath,
+              index: newIndex
+            });
+            return;
+          }
+          last = path;
+        }
+      }
+    }
+    if (last) {
+      const [newPath] = last.insertAfter(node);
+      lastImports.push({
+        path: newPath,
+        index: newIndex
+      });
+    } else {
+      const [newPath] = programPath.unshiftContainer("body", [node]);
+      this._lastImports.set(programPath, [{
+        path: newPath,
+        index: newIndex
+      }]);
+    }
+  }
+  _ensure(map, programPath, Collection) {
+    let collection = map.get(programPath);
+    if (!collection) {
+      collection = new Collection();
+      map.set(programPath, collection);
+    }
+    return collection;
+  }
+  _normalizeKey(programPath, url, name = "") {
+    const {
+      sourceType
+    } = programPath.node;
+
+    // If we rely on the imported binding (the "name" parameter), we also need to cache
+    // based on the sourceType. This is because the module transforms change the names
+    // of the import variables.
+    return `${name && sourceType}::${url}::${name}`;
+  }
+}
+exports.default = ImportsCachedInjector;

backend/node_modules/@babel/helper-define-polyfill-provider/lib/index.js

@@ -0,0 +1,288 @@
+"use strict";
+
+exports.__esModule = true;
+exports.default = definePolyfillProvider;
+var _helperPluginUtils = require("@babel/helper-plugin-utils");
+var _helperCompilationTargets = _interopRequireWildcard(require("@babel/helper-compilation-targets"));
+var _utils = require("./utils");
+var _importsInjector = _interopRequireDefault(require("./imports-injector"));
+var _debugUtils = require("./debug-utils");
+var _normalizeOptions = require("./normalize-options");
+var v = _interopRequireWildcard(require("./visitors"));
+var deps = _interopRequireWildcard(require("./node/dependencies"));
+var _metaResolver = _interopRequireDefault(require("./meta-resolver"));
+const _excluded = ["method", "targets", "ignoreBrowserslistConfig", "configPath", "debug", "shouldInjectPolyfill", "absoluteImports"];
+function _interopRequireDefault(e) { return e && e.__esModule ? e : { default: e }; }
+function _interopRequireWildcard(e, t) { if ("function" == typeof WeakMap) var r = new WeakMap(), n = new WeakMap(); return (_interopRequireWildcard = function (e, t) { if (!t && e && e.__esModule) return e; var o, i, f = { __proto__: null, default: e }; if (null === e || "object" != typeof e && "function" != typeof e) return f; if (o = t ? n : r) { if (o.has(e)) return o.get(e); o.set(e, f); } for (const t in e) "default" !== t && {}.hasOwnProperty.call(e, t) && ((i = (o = Object.defineProperty) && Object.getOwnPropertyDescriptor(e, t)) && (i.get || i.set) ? o(f, t, i) : f[t] = e[t]); return f; })(e, t); }
+function _objectWithoutPropertiesLoose(r, e) { if (null == r) return {}; var t = {}; for (var n in r) if ({}.hasOwnProperty.call(r, n)) { if (-1 !== e.indexOf(n)) continue; t[n] = r[n]; } return t; }
+const getTargets = _helperCompilationTargets.default.default || _helperCompilationTargets.default;
+function resolveOptions(options, babelApi) {
+  const {
+      method,
+      targets: targetsOption,
+      ignoreBrowserslistConfig,
+      configPath,
+      debug,
+      shouldInjectPolyfill,
+      absoluteImports
+    } = options,
+    providerOptions = _objectWithoutPropertiesLoose(options, _excluded);
+  if (isEmpty(options)) {
+    throw new Error(`\
+This plugin requires options, for example:
+    {
+      "plugins": [
+        ["<plugin name>", { method: "usage-pure" }]
+      ]
+    }
+
+See more options at https://github.com/babel/babel-polyfills/blob/main/docs/usage.md`);
+  }
+  let methodName;
+  if (method === "usage-global") methodName = "usageGlobal";else if (method === "entry-global") methodName = "entryGlobal";else if (method === "usage-pure") methodName = "usagePure";else if (typeof method !== "string") {
+    throw new Error(".method must be a string");
+  } else {
+    throw new Error(`.method must be one of "entry-global", "usage-global"` + ` or "usage-pure" (received ${JSON.stringify(method)})`);
+  }
+  if (typeof shouldInjectPolyfill === "function") {
+    if (options.include || options.exclude) {
+      throw new Error(`.include and .exclude are not supported when using the` + ` .shouldInjectPolyfill function.`);
+    }
+  } else if (shouldInjectPolyfill != null) {
+    throw new Error(`.shouldInjectPolyfill must be a function, or undefined` + ` (received ${JSON.stringify(shouldInjectPolyfill)})`);
+  }
+  if (absoluteImports != null && typeof absoluteImports !== "boolean" && typeof absoluteImports !== "string") {
+    throw new Error(`.absoluteImports must be a boolean, a string, or undefined` + ` (received ${JSON.stringify(absoluteImports)})`);
+  }
+  let targets;
+  if (
+  // If any browserslist-related option is specified, fallback to the old
+  // behavior of not using the targets specified in the top-level options.
+  targetsOption || configPath || ignoreBrowserslistConfig) {
+    const targetsObj = typeof targetsOption === "string" || Array.isArray(targetsOption) ? {
+      browsers: targetsOption
+    } : targetsOption;
+    targets = getTargets(targetsObj, {
+      ignoreBrowserslistConfig,
+      configPath
+    });
+  } else {
+    targets = babelApi.targets();
+  }
+  return {
+    method,
+    methodName,
+    targets,
+    absoluteImports: absoluteImports != null ? absoluteImports : false,
+    shouldInjectPolyfill,
+    debug: !!debug,
+    providerOptions: providerOptions
+  };
+}
+function instantiateProvider(factory, options, missingDependencies, dirname, debugLog, babelApi) {
+  const {
+    method,
+    methodName,
+    targets,
+    debug,
+    shouldInjectPolyfill,
+    providerOptions,
+    absoluteImports
+  } = resolveOptions(options, babelApi);
+
+  // eslint-disable-next-line prefer-const
+  let include, exclude;
+  let polyfillsSupport;
+  let polyfillsNames;
+  let filterPolyfills;
+  const getUtils = (0, _utils.createUtilsGetter)(new _importsInjector.default(moduleName => deps.resolve(dirname, moduleName, absoluteImports), name => {
+    var _polyfillsNames$get, _polyfillsNames;
+    return (_polyfillsNames$get = (_polyfillsNames = polyfillsNames) == null ? void 0 : _polyfillsNames.get(name)) != null ? _polyfillsNames$get : Infinity;
+  }));
+  const depsCache = new Map();
+  const api = {
+    babel: babelApi,
+    getUtils,
+    method: options.method,
+    targets,
+    createMetaResolver: _metaResolver.default,
+    shouldInjectPolyfill(name) {
+      if (polyfillsNames === undefined) {
+        throw new Error(`Internal error in the ${factory.name} provider: ` + `shouldInjectPolyfill() can't be called during initialization.`);
+      }
+      if (!polyfillsNames.has(name)) {
+        console.warn(`Internal error in the ${providerName} provider: ` + `unknown polyfill "${name}".`);
+      }
+      if (filterPolyfills && !filterPolyfills(name)) return false;
+      let shouldInject = (0, _helperCompilationTargets.isRequired)(name, targets, {
+        compatData: polyfillsSupport,
+        includes: include,
+        excludes: exclude
+      });
+      if (shouldInjectPolyfill) {
+        shouldInject = shouldInjectPolyfill(name, shouldInject);
+        if (typeof shouldInject !== "boolean") {
+          throw new Error(`.shouldInjectPolyfill must return a boolean.`);
+        }
+      }
+      return shouldInject;
+    },
+    debug(name) {
+      var _debugLog, _debugLog$polyfillsSu;
+      debugLog().found = true;
+      if (!debug || !name) return;
+      if (debugLog().polyfills.has(providerName)) return;
+      debugLog().polyfills.add(name);
+      (_debugLog$polyfillsSu = (_debugLog = debugLog()).polyfillsSupport) != null ? _debugLog$polyfillsSu : _debugLog.polyfillsSupport = polyfillsSupport;
+    },
+    assertDependency(name, version = "*") {
+      if (missingDependencies === false) return;
+      if (absoluteImports) {
+        // If absoluteImports is not false, we will try resolving
+        // the dependency and throw if it's not possible. We can
+        // skip the check here.
+        return;
+      }
+      const dep = version === "*" ? name : `${name}@^${version}`;
+      const found = missingDependencies.all ? false : mapGetOr(depsCache, `${name} :: ${dirname}`, () => deps.has(dirname, name));
+      if (!found) {
+        debugLog().missingDeps.add(dep);
+      }
+    }
+  };
+  const provider = factory(api, providerOptions, dirname);
+  const providerName = provider.name || factory.name;
+  if (typeof provider[methodName] !== "function") {
+    throw new Error(`The "${providerName}" provider doesn't support the "${method}" polyfilling method.`);
+  }
+  if (Array.isArray(provider.polyfills)) {
+    polyfillsNames = new Map(provider.polyfills.map((name, index) => [name, index]));
+    filterPolyfills = provider.filterPolyfills;
+  } else if (provider.polyfills) {
+    polyfillsNames = new Map(Object.keys(provider.polyfills).map((name, index) => [name, index]));
+    polyfillsSupport = provider.polyfills;
+    filterPolyfills = provider.filterPolyfills;
+  } else {
+    polyfillsNames = new Map();
+  }
+  ({
+    include,
+    exclude
+  } = (0, _normalizeOptions.validateIncludeExclude)(providerName, polyfillsNames, providerOptions.include || [], providerOptions.exclude || []));
+  let callProvider;
+  if (methodName === "usageGlobal") {
+    callProvider = (payload, path) => {
+      var _ref;
+      const utils = getUtils(path);
+      return (_ref = provider[methodName](payload, utils, path)) != null ? _ref : false;
+    };
+  } else {
+    callProvider = (payload, path) => {
+      const utils = getUtils(path);
+      provider[methodName](payload, utils, path);
+      return false;
+    };
+  }
+  return {
+    debug,
+    method,
+    targets,
+    provider,
+    providerName,
+    callProvider
+  };
+}
+function definePolyfillProvider(factory) {
+  return (0, _helperPluginUtils.declare)((babelApi, options, dirname) => {
+    babelApi.assertVersion("^7.0.0 || ^8.0.0-alpha.0");
+    const {
+      traverse
+    } = babelApi;
+    let debugLog;
+    const missingDependencies = (0, _normalizeOptions.applyMissingDependenciesDefaults)(options, babelApi);
+    const {
+      debug,
+      method,
+      targets,
+      provider,
+      providerName,
+      callProvider
+    } = instantiateProvider(factory, options, missingDependencies, dirname, () => debugLog, babelApi);
+    const createVisitor = method === "entry-global" ? v.entry : v.usage;
+    const visitor = provider.visitor ? traverse.visitors.merge([createVisitor(callProvider), provider.visitor]) : createVisitor(callProvider);
+    if (debug && debug !== _debugUtils.presetEnvSilentDebugHeader) {
+      console.log(`${providerName}: \`DEBUG\` option`);
+      console.log(`\nUsing targets: ${(0, _debugUtils.stringifyTargetsMultiline)(targets)}`);
+      console.log(`\nUsing polyfills with \`${method}\` method:`);
+    }
+    const {
+      runtimeName
+    } = provider;
+    return {
+      name: "inject-polyfills",
+      visitor,
+      pre(file) {
+        var _provider$pre;
+        if (runtimeName) {
+          if (file.get("runtimeHelpersModuleName") && file.get("runtimeHelpersModuleName") !== runtimeName) {
+            console.warn(`Two different polyfill providers` + ` (${file.get("runtimeHelpersModuleProvider")}` + ` and ${providerName}) are trying to define two` + ` conflicting @babel/runtime alternatives:` + ` ${file.get("runtimeHelpersModuleName")} and ${runtimeName}.` + ` The second one will be ignored.`);
+          } else {
+            file.set("runtimeHelpersModuleName", runtimeName);
+            file.set("runtimeHelpersModuleProvider", providerName);
+          }
+        }
+        debugLog = {
+          polyfills: new Set(),
+          polyfillsSupport: undefined,
+          found: false,
+          providers: new Set(),
+          missingDeps: new Set()
+        };
+        (_provider$pre = provider.pre) == null || _provider$pre.apply(this, arguments);
+      },
+      post() {
+        var _provider$post;
+        (_provider$post = provider.post) == null || _provider$post.apply(this, arguments);
+        if (missingDependencies !== false) {
+          if (missingDependencies.log === "per-file") {
+            deps.logMissing(debugLog.missingDeps);
+          } else {
+            deps.laterLogMissing(debugLog.missingDeps);
+          }
+        }
+        if (!debug) return;
+        if (this.filename) console.log(`\n[${this.filename}]`);
+        if (debugLog.polyfills.size === 0) {
+          console.log(method === "entry-global" ? debugLog.found ? `Based on your targets, the ${providerName} polyfill did not add any polyfill.` : `The entry point for the ${providerName} polyfill has not been found.` : `Based on your code and targets, the ${providerName} polyfill did not add any polyfill.`);
+          return;
+        }
+        if (method === "entry-global") {
+          console.log(`The ${providerName} polyfill entry has been replaced with ` + `the following polyfills:`);
+        } else {
+          console.log(`The ${providerName} polyfill added the following polyfills:`);
+        }
+        for (const name of debugLog.polyfills) {
+          var _debugLog$polyfillsSu2;
+          if ((_debugLog$polyfillsSu2 = debugLog.polyfillsSupport) != null && _debugLog$polyfillsSu2[name]) {
+            const filteredTargets = (0, _helperCompilationTargets.getInclusionReasons)(name, targets, debugLog.polyfillsSupport);
+            const formattedTargets = JSON.stringify(filteredTargets).replace(/,/g, ", ").replace(/^\{"/, '{ "').replace(/"\}$/, '" }');
+            console.log(`  ${name} ${formattedTargets}`);
+          } else {
+            console.log(`  ${name}`);
+          }
+        }
+      }
+    };
+  });
+}
+function mapGetOr(map, key, getDefault) {
+  let val = map.get(key);
+  if (val === undefined) {
+    val = getDefault();
+    map.set(key, val);
+  }
+  return val;
+}
+function isEmpty(obj) {
+  return Object.keys(obj).length === 0;
+}

backend/node_modules/@babel/helper-define-polyfill-provider/lib/meta-resolver.js

@@ -0,0 +1,51 @@
+"use strict";
+
+exports.__esModule = true;
+exports.default = createMetaResolver;
+var _utils = require("./utils");
+function createMetaResolver(polyfills) {
+  const {
+    static: staticP,
+    instance: instanceP,
+    global: globalP
+  } = polyfills;
+  return meta => {
+    if (meta.kind === "global" && globalP && (0, _utils.has)(globalP, meta.name)) {
+      return {
+        kind: "global",
+        desc: globalP[meta.name],
+        name: meta.name
+      };
+    }
+    if (meta.kind === "property" || meta.kind === "in") {
+      const {
+        placement,
+        object,
+        key
+      } = meta;
+      if (object && placement === "static") {
+        if (globalP && _utils.PossibleGlobalObjects.has(object) && (0, _utils.has)(globalP, key)) {
+          return {
+            kind: "global",
+            desc: globalP[key],
+            name: key
+          };
+        }
+        if (staticP && (0, _utils.has)(staticP, object) && (0, _utils.has)(staticP[object], key)) {
+          return {
+            kind: "static",
+            desc: staticP[object][key],
+            name: `${object}$${key}`
+          };
+        }
+      }
+      if (instanceP && (0, _utils.has)(instanceP, key)) {
+        return {
+          kind: "instance",
+          desc: instanceP[key],
+          name: `${key}`
+        };
+      }
+    }
+  };
+}

backend/node_modules/@babel/helper-define-polyfill-provider/lib/node/dependencies.js

@@ -0,0 +1,67 @@
+"use strict";
+
+exports.__esModule = true;
+exports.has = has;
+exports.laterLogMissing = laterLogMissing;
+exports.logMissing = logMissing;
+exports.resolve = resolve;
+var _path = _interopRequireDefault(require("path"));
+var _lodash = _interopRequireDefault(require("lodash.debounce"));
+var _resolve = _interopRequireDefault(require("resolve"));
+var _module = require("module");
+function _interopRequireDefault(e) { return e && e.__esModule ? e : { default: e }; }
+const nativeRequireResolve = parseFloat(process.versions.node) >= 8.9;
+// eslint-disable-line
+
+function myResolve(name, basedir) {
+  if (nativeRequireResolve) {
+    return require.resolve(name, {
+      paths: [basedir]
+    }).replace(/\\/g, "/");
+  } else {
+    return _resolve.default.sync(name, {
+      basedir
+    }).replace(/\\/g, "/");
+  }
+}
+function resolve(dirname, moduleName, absoluteImports) {
+  if (absoluteImports === false) return moduleName;
+  let basedir = dirname;
+  if (typeof absoluteImports === "string") {
+    basedir = _path.default.resolve(basedir, absoluteImports);
+  }
+  try {
+    return myResolve(moduleName, basedir);
+  } catch (err) {
+    if (err.code !== "MODULE_NOT_FOUND") throw err;
+    throw Object.assign(new Error(`Failed to resolve "${moduleName}" relative to "${dirname}"`), {
+      code: "BABEL_POLYFILL_NOT_FOUND",
+      polyfill: moduleName,
+      dirname
+    });
+  }
+}
+function has(basedir, name) {
+  try {
+    myResolve(name, basedir);
+    return true;
+  } catch (_unused) {
+    return false;
+  }
+}
+function logMissing(missingDeps) {
+  if (missingDeps.size === 0) return;
+  const deps = Array.from(missingDeps).sort().join(" ");
+  console.warn("\nSome polyfills have been added but are not present in your dependencies.\n" + "Please run one of the following commands:\n" + `\tnpm install --save ${deps}\n` + `\tyarn add ${deps}\n`);
+  process.exitCode = 1;
+}
+let allMissingDeps = new Set();
+const laterLogMissingDependencies = (0, _lodash.default)(() => {
+  logMissing(allMissingDeps);
+  allMissingDeps = new Set();
+}, 100);
+function laterLogMissing(missingDeps) {
+  if (missingDeps.size === 0) return;
+  missingDeps.forEach(name => allMissingDeps.add(name));
+  laterLogMissingDependencies();
+}

backend/node_modules/@babel/helper-define-polyfill-provider/lib/normalize-options.js

@@ -0,0 +1,70 @@
+"use strict";
+
+exports.__esModule = true;
+exports.applyMissingDependenciesDefaults = applyMissingDependenciesDefaults;
+exports.validateIncludeExclude = validateIncludeExclude;
+var _utils = require("./utils");
+function patternToRegExp(pattern) {
+  if (pattern instanceof RegExp) return pattern;
+  try {
+    return new RegExp(`^${pattern}$`);
+  } catch (_unused) {
+    return null;
+  }
+}
+function buildUnusedError(label, unused) {
+  if (!unused.length) return "";
+  return `  - The following "${label}" patterns didn't match any polyfill:\n` + unused.map(original => `    ${String(original)}\n`).join("");
+}
+function buldDuplicatesError(duplicates) {
+  if (!duplicates.size) return "";
+  return `  - The following polyfills were matched both by "include" and "exclude" patterns:\n` + Array.from(duplicates, name => `    ${name}\n`).join("");
+}
+function validateIncludeExclude(provider, polyfills, includePatterns, excludePatterns) {
+  let current;
+  const filter = pattern => {
+    const regexp = patternToRegExp(pattern);
+    if (!regexp) return false;
+    let matched = false;
+    for (const polyfill of polyfills.keys()) {
+      if (regexp.test(polyfill)) {
+        matched = true;
+        current.add(polyfill);
+      }
+    }
+    return !matched;
+  };
+
+  // prettier-ignore
+  const include = current = new Set();
+  const unusedInclude = Array.from(includePatterns).filter(filter);
+
+  // prettier-ignore
+  const exclude = current = new Set();
+  const unusedExclude = Array.from(excludePatterns).filter(filter);
+  const duplicates = (0, _utils.intersection)(include, exclude);
+  if (duplicates.size > 0 || unusedInclude.length > 0 || unusedExclude.length > 0) {
+    throw new Error(`Error while validating the "${provider}" provider options:\n` + buildUnusedError("include", unusedInclude) + buildUnusedError("exclude", unusedExclude) + buldDuplicatesError(duplicates));
+  }
+  return {
+    include,
+    exclude
+  };
+}
+function applyMissingDependenciesDefaults(options, babelApi) {
+  const {
+    missingDependencies = {}
+  } = options;
+  if (missingDependencies === false) return false;
+  const caller = babelApi.caller(caller => caller == null ? void 0 : caller.name);
+  const {
+    log = "deferred",
+    inject = caller === "rollup-plugin-babel" ? "throw" : "import",
+    all = false
+  } = missingDependencies;
+  return {
+    log,
+    inject,
+    all
+  };
+}

backend/node_modules/@babel/helper-define-polyfill-provider/lib/types.js

@@ -0,0 +1,3 @@
+"use strict";
+
+exports.__esModule = true;

backend/node_modules/@babel/helper-define-polyfill-provider/lib/utils.js

@@ -0,0 +1,405 @@
+"use strict";
+
+exports.__esModule = true;
+exports.PossibleGlobalObjects = void 0;
+exports.createUtilsGetter = createUtilsGetter;
+exports.getImportSource = getImportSource;
+exports.getRequireSource = getRequireSource;
+exports.has = has;
+exports.intersection = intersection;
+exports.resolveKey = resolveKey;
+exports.resolveSource = resolveSource;
+var _babel = _interopRequireWildcard(require("@babel/core"));
+function _interopRequireWildcard(e, t) { if ("function" == typeof WeakMap) var r = new WeakMap(), n = new WeakMap(); return (_interopRequireWildcard = function (e, t) { if (!t && e && e.__esModule) return e; var o, i, f = { __proto__: null, default: e }; if (null === e || "object" != typeof e && "function" != typeof e) return f; if (o = t ? n : r) { if (o.has(e)) return o.get(e); o.set(e, f); } for (const t in e) "default" !== t && {}.hasOwnProperty.call(e, t) && ((i = (o = Object.defineProperty) && Object.getOwnPropertyDescriptor(e, t)) && (i.get || i.set) ? o(f, t, i) : f[t] = e[t]); return f; })(e, t); }
+const {
+  types: t,
+  template: template
+} = _babel.default || _babel;
+const PossibleGlobalObjects = exports.PossibleGlobalObjects = new Set(["global", "globalThis", "self", "window"]);
+function intersection(a, b) {
+  const result = new Set();
+  a.forEach(v => b.has(v) && result.add(v));
+  return result;
+}
+function has(object, key) {
+  return Object.prototype.hasOwnProperty.call(object, key);
+}
+function resolve(path, seen = new Set()) {
+  if (seen.has(path)) return;
+  seen.add(path);
+  if (path.isVariableDeclarator()) {
+    if (path.get("id").isIdentifier()) {
+      return resolve(path.get("init"), seen);
+    }
+  } else if (path.isReferencedIdentifier()) {
+    const binding = path.scope.getBinding(path.node.name);
+    if (!binding) return path;
+    if (!binding.constant) return;
+    return resolve(binding.path, seen);
+  }
+  return path;
+}
+function resolveId(path) {
+  if (path.isIdentifier() && !path.scope.hasBinding(path.node.name, /* noGlobals */true)) {
+    return path.node.name;
+  }
+
+  // globalThis.Object / window.Array / self.Map / global.Set -> resolve to
+  // the property name, because accessing a built-in through a global object
+  // reference is equivalent to accessing it directly.
+  if (path.isMemberExpression() && !path.node.computed) {
+    const object = path.get("object");
+    const property = path.get("property");
+    if (object.isIdentifier() && !object.scope.hasBinding(object.node.name, /* noGlobals */true) && PossibleGlobalObjects.has(object.node.name) && property.isIdentifier()) {
+      return property.node.name;
+    }
+  }
+  const resolved = resolve(path);
+  if (resolved != null && resolved.isIdentifier()) {
+    return resolved.node.name;
+  }
+}
+function resolveKey(path, computed = false) {
+  const {
+    scope
+  } = path;
+  if (path.isStringLiteral()) return path.node.value;
+  const isIdentifier = path.isIdentifier();
+  if (isIdentifier && !(computed || path.parent.computed)) {
+    return path.node.name;
+  }
+  if (computed && path.isMemberExpression() && path.get("object").isIdentifier({
+    name: "Symbol"
+  }) && !scope.hasBinding("Symbol", /* noGlobals */true)) {
+    const sym = resolveKey(path.get("property"), path.node.computed);
+    if (sym) return "Symbol." + sym;
+  }
+  if (isIdentifier ? scope.hasBinding(path.node.name, /* noGlobals */true) : path.isPure()) {
+    const {
+      value
+    } = path.evaluate();
+    if (typeof value === "string") return value;
+  }
+}
+function resolveInstance(obj, seen) {
+  const source = resolveSource(obj, seen);
+  return source.placement === "prototype" ? source.id : null;
+}
+function resolveSource(obj, seen) {
+  if (seen.has(obj)) {
+    return {
+      id: null,
+      placement: null
+    };
+  }
+  seen.add(obj);
+  if (obj.isMemberExpression() && obj.get("property").isIdentifier({
+    name: "prototype"
+  })) {
+    const id = resolveId(obj.get("object"));
+    if (id) {
+      return {
+        id,
+        placement: "prototype"
+      };
+    }
+    return {
+      id: null,
+      placement: null
+    };
+  }
+  const id = resolveId(obj);
+  if (id) {
+    return {
+      id,
+      placement: "static"
+    };
+  }
+  const path = resolve(obj);
+  switch (path == null ? void 0 : path.type) {
+    case "NullLiteral":
+      return {
+        id: null,
+        placement: null
+      };
+    case "RegExpLiteral":
+      return {
+        id: "RegExp",
+        placement: "prototype"
+      };
+    case "StringLiteral":
+    case "TemplateLiteral":
+      return {
+        id: "String",
+        placement: "prototype"
+      };
+    case "NumericLiteral":
+      return {
+        id: "Number",
+        placement: "prototype"
+      };
+    case "BooleanLiteral":
+      return {
+        id: "Boolean",
+        placement: "prototype"
+      };
+    case "BigIntLiteral":
+      return {
+        id: "BigInt",
+        placement: "prototype"
+      };
+    case "ObjectExpression":
+      return {
+        id: "Object",
+        placement: "prototype"
+      };
+    case "ArrayExpression":
+      return {
+        id: "Array",
+        placement: "prototype"
+      };
+    case "FunctionExpression":
+    case "ArrowFunctionExpression":
+    case "ClassExpression":
+      return {
+        id: "Function",
+        placement: "prototype"
+      };
+    // new Constructor() -> resolve the constructor name
+    case "NewExpression":
+      {
+        const calleeId = resolveId(path.get("callee"));
+        if (calleeId) return {
+          id: calleeId,
+          placement: "prototype"
+        };
+        return {
+          id: null,
+          placement: null
+        };
+      }
+    // Unary expressions -> result type depends on operator
+    case "UnaryExpression":
+      {
+        const {
+          operator
+        } = path.node;
+        if (operator === "typeof") return {
+          id: "String",
+          placement: "prototype"
+        };
+        if (operator === "!" || operator === "delete") return {
+          id: "Boolean",
+          placement: "prototype"
+        };
+        // Unary + always produces Number (throws on BigInt)
+        if (operator === "+") return {
+          id: "Number",
+          placement: "prototype"
+        };
+        // Unary - and ~ can produce Number or BigInt depending on operand
+        if (operator === "-" || operator === "~") {
+          const arg = resolveInstance(path.get("argument"), seen);
+          if (arg === "BigInt") return {
+            id: "BigInt",
+            placement: "prototype"
+          };
+          if (arg !== null) return {
+            id: "Number",
+            placement: "prototype"
+          };
+          return {
+            id: null,
+            placement: null
+          };
+        }
+        return {
+          id: null,
+          placement: null
+        };
+      }
+    // ++i, i++ produce Number or BigInt depending on the argument
+    case "UpdateExpression":
+      {
+        const arg = resolveInstance(path.get("argument"), seen);
+        if (arg === "BigInt") return {
+          id: "BigInt",
+          placement: "prototype"
+        };
+        if (arg !== null) return {
+          id: "Number",
+          placement: "prototype"
+        };
+        return {
+          id: null,
+          placement: null
+        };
+      }
+    // Binary expressions -> result type depends on operator
+    case "BinaryExpression":
+      {
+        const {
+          operator
+        } = path.node;
+        if (operator === "==" || operator === "!=" || operator === "===" || operator === "!==" || operator === "<" || operator === ">" || operator === "<=" || operator === ">=" || operator === "instanceof" || operator === "in") {
+          return {
+            id: "Boolean",
+            placement: "prototype"
+          };
+        }
+        // >>> always produces Number
+        if (operator === ">>>") {
+          return {
+            id: "Number",
+            placement: "prototype"
+          };
+        }
+        // Arithmetic and bitwise operators can produce Number or BigInt
+        if (operator === "-" || operator === "*" || operator === "/" || operator === "%" || operator === "**" || operator === "&" || operator === "|" || operator === "^" || operator === "<<" || operator === ">>") {
+          const left = resolveInstance(path.get("left"), seen);
+          const right = resolveInstance(path.get("right"), seen);
+          if (left === "BigInt" && right === "BigInt") {
+            return {
+              id: "BigInt",
+              placement: "prototype"
+            };
+          }
+          if (left !== null && right !== null) {
+            return {
+              id: "Number",
+              placement: "prototype"
+            };
+          }
+          return {
+            id: null,
+            placement: null
+          };
+        }
+        // + depends on operand types: string wins, otherwise number or bigint
+        if (operator === "+") {
+          const left = resolveInstance(path.get("left"), seen);
+          const right = resolveInstance(path.get("right"), seen);
+          if (left === "String" || right === "String") {
+            return {
+              id: "String",
+              placement: "prototype"
+            };
+          }
+          if (left === "Number" && right === "Number") {
+            return {
+              id: "Number",
+              placement: "prototype"
+            };
+          }
+          if (left === "BigInt" && right === "BigInt") {
+            return {
+              id: "BigInt",
+              placement: "prototype"
+            };
+          }
+        }
+        return {
+          id: null,
+          placement: null
+        };
+      }
+    // (a, b, c) -> the result is the last expression
+    case "SequenceExpression":
+      {
+        const expressions = path.get("expressions");
+        return resolveSource(expressions[expressions.length - 1], seen);
+      }
+    // a = b -> the result is the right side
+    case "AssignmentExpression":
+      {
+        if (path.node.operator === "=") {
+          return resolveSource(path.get("right"), seen);
+        }
+        return {
+          id: null,
+          placement: null
+        };
+      }
+    // a ? b : c -> if both branches resolve to the same type, use it
+    case "ConditionalExpression":
+      {
+        const consequent = resolveSource(path.get("consequent"), seen);
+        const alternate = resolveSource(path.get("alternate"), seen);
+        if (consequent.id && consequent.id === alternate.id) {
+          return consequent;
+        }
+        return {
+          id: null,
+          placement: null
+        };
+      }
+    // (expr) -> unwrap parenthesized expressions
+    case "ParenthesizedExpression":
+      return resolveSource(path.get("expression"), seen);
+    // TypeScript / Flow type wrappers -> unwrap to the inner expression
+    case "TSAsExpression":
+    case "TSSatisfiesExpression":
+    case "TSNonNullExpression":
+    case "TSInstantiationExpression":
+    case "TSTypeAssertion":
+    case "TypeCastExpression":
+      return resolveSource(path.get("expression"), seen);
+  }
+  return {
+    id: null,
+    placement: null
+  };
+}
+function getImportSource({
+  node
+}) {
+  if (node.specifiers.length === 0) return node.source.value;
+}
+function getRequireSource({
+  node
+}) {
+  if (!t.isExpressionStatement(node)) return;
+  const {
+    expression
+  } = node;
+  if (t.isCallExpression(expression) && t.isIdentifier(expression.callee) && expression.callee.name === "require" && expression.arguments.length === 1 && t.isStringLiteral(expression.arguments[0])) {
+    return expression.arguments[0].value;
+  }
+}
+function hoist(node) {
+  // @ts-expect-error
+  node._blockHoist = 3;
+  return node;
+}
+function createUtilsGetter(cache) {
+  return path => {
+    const prog = path.findParent(p => p.isProgram());
+    return {
+      injectGlobalImport(url, moduleName) {
+        cache.storeAnonymous(prog, url, moduleName, (isScript, source) => {
+          return isScript ? template.statement.ast`require(${source})` : t.importDeclaration([], source);
+        });
+      },
+      injectNamedImport(url, name, hint = name, moduleName) {
+        return cache.storeNamed(prog, url, name, moduleName, (isScript, source, name) => {
+          const id = prog.scope.generateUidIdentifier(hint);
+          return {
+            node: isScript ? hoist(template.statement.ast`
+                  var ${id} = require(${source}).${name}
+                `) : t.importDeclaration([t.importSpecifier(id, name)], source),
+            name: id.name
+          };
+        });
+      },
+      injectDefaultImport(url, hint = url, moduleName) {
+        return cache.storeNamed(prog, url, "default", moduleName, (isScript, source) => {
+          const id = prog.scope.generateUidIdentifier(hint);
+          return {
+            node: isScript ? hoist(template.statement.ast`var ${id} = require(${source})`) : t.importDeclaration([t.importDefaultSpecifier(id)], source),
+            name: id.name
+          };
+        });
+      }
+    };
+  };
+}

backend/node_modules/@babel/helper-define-polyfill-provider/lib/visitors/entry.js

@@ -0,0 +1,26 @@
+"use strict";
+
+exports.__esModule = true;
+exports.default = void 0;
+var _utils = require("../utils");
+var _default = callProvider => ({
+  ImportDeclaration(path) {
+    const source = (0, _utils.getImportSource)(path);
+    if (!source) return;
+    callProvider({
+      kind: "import",
+      source
+    }, path);
+  },
+  Program(path) {
+    path.get("body").forEach(bodyPath => {
+      const source = (0, _utils.getRequireSource)(bodyPath);
+      if (!source) return;
+      callProvider({
+        kind: "import",
+        source
+      }, bodyPath);
+    });
+  }
+});
+exports.default = _default;

backend/node_modules/@babel/helper-define-polyfill-provider/lib/visitors/index.js

@@ -0,0 +1,9 @@
+"use strict";
+
+exports.__esModule = true;
+exports.usage = exports.entry = void 0;
+var _usage = _interopRequireDefault(require("./usage"));
+exports.usage = _usage.default;
+var _entry = _interopRequireDefault(require("./entry"));
+exports.entry = _entry.default;
+function _interopRequireDefault(e) { return e && e.__esModule ? e : { default: e }; }

backend/node_modules/@babel/helper-define-polyfill-provider/lib/visitors/usage.js

@@ -0,0 +1,132 @@
+"use strict";
+
+exports.__esModule = true;
+exports.default = void 0;
+var _utils = require("../utils");
+function isRemoved(path) {
+  if (path.removed) return true;
+  if (!path.parentPath) return false;
+  if (path.listKey) {
+    var _path$parentPath$node;
+    if (!((_path$parentPath$node = path.parentPath.node) != null && (_path$parentPath$node = _path$parentPath$node[path.listKey]) != null && _path$parentPath$node.includes(path.node))) return true;
+  } else {
+    var _path$parentPath$node2;
+    if (((_path$parentPath$node2 = path.parentPath.node) == null ? void 0 : _path$parentPath$node2[path.key]) !== path.node) return true;
+  }
+  return isRemoved(path.parentPath);
+}
+var _default = callProvider => {
+  function property(object, key, placement, path) {
+    return callProvider({
+      kind: "property",
+      object,
+      key,
+      placement
+    }, path);
+  }
+  function handleReferencedIdentifier(path) {
+    const {
+      node: {
+        name
+      },
+      scope
+    } = path;
+    if (scope.getBindingIdentifier(name)) return;
+    callProvider({
+      kind: "global",
+      name
+    }, path);
+  }
+  function analyzeMemberExpression(path) {
+    const key = (0, _utils.resolveKey)(path.get("property"), path.node.computed);
+    return {
+      key,
+      handleAsMemberExpression: !!key && key !== "prototype"
+    };
+  }
+  return {
+    // Symbol(), new Promise
+    ReferencedIdentifier(path) {
+      const {
+        parentPath
+      } = path;
+      if (parentPath.isMemberExpression({
+        object: path.node
+      }) && analyzeMemberExpression(parentPath).handleAsMemberExpression) {
+        return;
+      }
+      handleReferencedIdentifier(path);
+    },
+    "MemberExpression|OptionalMemberExpression"(path) {
+      const {
+        key,
+        handleAsMemberExpression
+      } = analyzeMemberExpression(path);
+      if (!handleAsMemberExpression) return;
+      const object = path.get("object");
+      let objectIsGlobalIdentifier = object.isIdentifier();
+      if (objectIsGlobalIdentifier) {
+        const binding = object.scope.getBinding(object.node.name);
+        if (binding) {
+          if (binding.path.isImportNamespaceSpecifier()) return;
+          objectIsGlobalIdentifier = false;
+        }
+      }
+      const source = (0, _utils.resolveSource)(object, new Set());
+      const skipObject = property(source.id, key, source.placement, path);
+      const canHandleObject = objectIsGlobalIdentifier && !path.shouldSkip && !object.shouldSkip && !isRemoved(object);
+      if (canHandleObject && (!skipObject || _utils.PossibleGlobalObjects.has(source.id))) {
+        handleReferencedIdentifier(object);
+      }
+    },
+    ObjectPattern(path) {
+      const {
+        parentPath,
+        parent
+      } = path;
+      let obj;
+
+      // const { keys, values } = Object
+      if (parentPath.isVariableDeclarator()) {
+        obj = parentPath.get("init");
+        // ({ keys, values } = Object)
+      } else if (parentPath.isAssignmentExpression()) {
+        obj = parentPath.get("right");
+        // !function ({ keys, values }) {...} (Object)
+        // resolution does not work after properties transform :-(
+      } else if (parentPath.isFunction()) {
+        const grand = parentPath.parentPath;
+        if (grand.isCallExpression() || grand.isNewExpression()) {
+          if (grand.node.callee === parent) {
+            obj = grand.get("arguments")[path.key];
+          }
+        }
+      }
+      let id = null;
+      let placement = null;
+      if (obj) ({
+        id,
+        placement
+      } = (0, _utils.resolveSource)(obj, new Set()));
+      for (const prop of path.get("properties")) {
+        if (prop.isObjectProperty()) {
+          const key = (0, _utils.resolveKey)(prop.get("key"));
+          if (key) property(id, key, placement, prop);
+        }
+      }
+    },
+    BinaryExpression(path) {
+      if (path.node.operator !== "in") return;
+      const source = (0, _utils.resolveSource)(path.get("right"), new Set());
+      const key = (0, _utils.resolveKey)(path.get("left"), true);
+      if (!key) return;
+      callProvider({
+        kind: "in",
+        object: source.id,
+        key,
+        placement: source.placement
+      }, path);
+    }
+  };
+};
+exports.default = _default;

backend/node_modules/@babel/helper-define-polyfill-provider/package.json

@@ -0,0 +1,59 @@
+{
+  "name": "@babel/helper-define-polyfill-provider",
+  "version": "0.6.8",
+  "description": "Babel helper to create your own polyfill provider",
+  "repository": {
+    "type": "git",
+    "url": "https://github.com/babel/babel-polyfills.git",
+    "directory": "packages/babel-helper-define-polyfill-provider"
+  },
+  "keywords": [
+    "babel-plugin"
+  ],
+  "license": "MIT",
+  "publishConfig": {
+    "access": "public"
+  },
+  "main": "lib/index.js",
+  "browser": {
+    "./lib/node/dependencies.js": "./lib/browser/dependencies.js",
+    "./src/node/dependencies.js": "./src/browser/dependencies.js"
+  },
+  "exports": {
+    ".": [
+      {
+        "import": {
+          "node": "./esm/index.node.mjs",
+          "browser": "./esm/index.browser.mjs"
+        },
+        "default": "./lib/index.js"
+      },
+      "./lib/index.js"
+    ],
+    "./package.json": "./package.json"
+  },
+  "dependencies": {
+    "@babel/helper-compilation-targets": "^7.28.6",
+    "@babel/helper-plugin-utils": "^7.28.6",
+    "debug": "^4.4.3",
+    "lodash.debounce": "^4.0.8",
+    "resolve": "^1.22.11"
+  },
+  "peerDependencies": {
+    "@babel/core": "^7.4.0 || ^8.0.0-0 <8.0.0"
+  },
+  "devDependencies": {
+    "@babel/cli": "^7.28.6",
+    "@babel/core": "^7.28.6",
+    "@babel/generator": "^7.28.6",
+    "@babel/plugin-transform-modules-commonjs": "^7.28.6",
+    "@babel/traverse": "^7.28.6",
+    "babel-loader": "^8.4.1",
+    "rollup": "^2.79.2",
+    "rollup-plugin-babel": "^4.4.0",
+    "strip-ansi": "^6.0.1",
+    "webpack": "^4.47.0",
+    "webpack-cli": "^3.3.12"
+  },
+  "gitHead": "86eff78e98adc17cdf0eb9ba4d94140eb7cb0da0"
+}