react-hot-loader/dist/react-hot-loader.development.js

Tweak React components in real time.

'use strict';

Object.defineProperty(exports, '__esModule', { value: true });

function _interopDefault (ex) { return (ex && (typeof ex === 'object') && 'default' in ex) ? ex['default'] : ex; }

var React = require('react');
var React__default = _interopDefault(React);
var shallowEqual = _interopDefault(require('shallowequal'));
var levenshtein = _interopDefault(require('fast-levenshtein'));
var ReactDOM = _interopDefault(require('react-dom'));
var PropTypes = _interopDefault(require('prop-types'));
var defaultPolyfill = require('react-lifecycles-compat');
var defaultPolyfill__default = _interopDefault(defaultPolyfill);
var hoistNonReactStatic = _interopDefault(require('hoist-non-react-statics'));

var _typeof = typeof Symbol === "function" && typeof Symbol.iterator === "symbol" ? function (obj) {
  return typeof obj;
} : function (obj) {
  return obj && typeof Symbol === "function" && obj.constructor === Symbol && obj !== Symbol.prototype ? "symbol" : typeof obj;
};

var classCallCheck = function (instance, Constructor) {
  if (!(instance instanceof Constructor)) {
    throw new TypeError("Cannot call a class as a function");
  }
};

var _extends = Object.assign || function (target) {
  for (var i = 1; i < arguments.length; i++) {
    var source = arguments[i];

    for (var key in source) {
      if (Object.prototype.hasOwnProperty.call(source, key)) {
        target[key] = source[key];
      }
    }
  }

  return target;
};

var inherits = function (subClass, superClass) {
  if (typeof superClass !== "function" && superClass !== null) {
    throw new TypeError("Super expression must either be null or a function, not " + typeof superClass);
  }

  subClass.prototype = Object.create(superClass && superClass.prototype, {
    constructor: {
      value: subClass,
      enumerable: false,
      writable: true,
      configurable: true
    }
  });
  if (superClass) Object.setPrototypeOf ? Object.setPrototypeOf(subClass, superClass) : subClass.__proto__ = superClass;
};

var possibleConstructorReturn = function (self, call) {
  if (!self) {
    throw new ReferenceError("this hasn't been initialised - super() hasn't been called");
  }

  return call && (typeof call === "object" || typeof call === "function") ? call : self;
};

/* eslint-disable no-underscore-dangle */

var isCompositeComponent = function isCompositeComponent(type) {
  return typeof type === 'function';
};
var isReloadableComponent = function isReloadableComponent(type) {
  return typeof type === 'function' || (typeof type === 'undefined' ? 'undefined' : _typeof(type)) === 'object';
};

var getComponentDisplayName = function getComponentDisplayName(type) {
  var displayName = type.displayName || type.name;
  return displayName && displayName !== 'ReactComponent' ? displayName : 'Component';
};

var reactLifeCycleMountMethods = ['componentWillMount', 'componentDidMount'];

function isReactClass(Component) {
  return !!(Component.prototype && (React__default.Component.prototype.isPrototypeOf(Component.prototype) ||
  // react 14 support
  Component.prototype.isReactComponent || Component.prototype.componentWillMount || Component.prototype.componentWillUnmount || Component.prototype.componentDidMount || Component.prototype.componentDidUnmount || Component.prototype.render));
}

function isReactClassInstance(Component) {
  return Component && isReactClass({ prototype: Object.getPrototypeOf(Component) });
}

var getInternalInstance = function getInternalInstance(instance) {
  return instance._reactInternalFiber || // React 16
  instance._reactInternalInstance || // React 15
  null;
};

var updateInstance = function updateInstance(instance) {
  var updater = instance.updater,
      forceUpdate = instance.forceUpdate;

  if (typeof forceUpdate === 'function') {
    instance.forceUpdate();
  } else if (updater && typeof updater.enqueueForceUpdate === 'function') {
    updater.enqueueForceUpdate(instance);
  }
};

var isFragmentNode = function isFragmentNode(_ref) {
  var type = _ref.type;
  return React__default.Fragment && type === React__default.Fragment;
};

var ContextType = React__default.createContext ? React__default.createContext() : null;
var ConsumerType = ContextType && ContextType.Consumer.$$typeof;
var ProviderType = ContextType && ContextType.Provider.$$typeof;
var MemoType = React__default.memo && React__default.memo(function () {
  return null;
}).$$typeof;
var LazyType = React__default.lazy && React__default.lazy(function () {
  return null;
}).$$typeof;
var ForwardType = React__default.forwardRef && React__default.forwardRef(function () {
  return null;
}).$$typeof;

var CONTEXT_CURRENT_VALUE = '_currentValue';

var isContextConsumer = function isContextConsumer(_ref2) {
  var type = _ref2.type;
  return type && (typeof type === 'undefined' ? 'undefined' : _typeof(type)) === 'object' && '$$typeof' in type && type.$$typeof === ConsumerType && ConsumerType;
};
var isContextProvider = function isContextProvider(_ref3) {
  var type = _ref3.type;
  return type && (typeof type === 'undefined' ? 'undefined' : _typeof(type)) === 'object' && '$$typeof' in type && type.$$typeof === ProviderType && ProviderType;
};
var isMemoType = function isMemoType(_ref4) {
  var type = _ref4.type;
  return type && (typeof type === 'undefined' ? 'undefined' : _typeof(type)) === 'object' && '$$typeof' in type && type.$$typeof === MemoType && MemoType;
};
var isLazyType = function isLazyType(_ref5) {
  var type = _ref5.type;
  return type && (typeof type === 'undefined' ? 'undefined' : _typeof(type)) === 'object' && '$$typeof' in type && type.$$typeof === LazyType && LazyType;
};
var isForwardType = function isForwardType(_ref6) {
  var type = _ref6.type;
  return type && (typeof type === 'undefined' ? 'undefined' : _typeof(type)) === 'object' && '$$typeof' in type && type.$$typeof === ForwardType && ForwardType;
};
var isContextType = function isContextType(type) {
  return isContextConsumer(type) || isContextProvider(type);
};

var getElementType = function getElementType(type) {
  var element = { type: type };

  if (isContextConsumer(element)) {
    return 'Consumer';
  }
  if (isContextProvider(element)) {
    return 'Provider';
  }
  if (isLazyType(element)) {
    return 'Lazy';
  }
  if (isMemoType(element)) {
    return 'Memo';
  }
  if (isForwardType(element)) {
    return 'Forward';
  }

  if (isReactClass(type)) {
    return 'Class';
  }

  if (typeof element === 'function') {
    return 'FC';
  }

  return 'unknown';
};

var getContextProvider = function getContextProvider(type) {
  return type && type._context;
};

var configuration = {
  // Log level
  logLevel: 'error',

  // Allows using SFC without changes
  pureSFC: true,

  // keep render method unpatched, moving sideEffect to componentDidUpdate
  pureRender: true,

  // Allows SFC to be used, enables "intermediate" components used by Relay, should be disabled for Preact
  allowSFC: true,

  // Allow reload of effect hooks with non zero dependency list
  reloadHooks: true,

  // Allow reload of mount effect hooks - zero deps
  reloadLifeCycleHooks: false,

  // Enables hook reload on hook body change
  reloadHooksOnBodyChange: true,

  // Disable "hot-replacement-render"
  disableHotRenderer: false,

  // @private
  integratedComparator: false,
  // @private
  integratedResolver: false,

  // Disable "hot-replacement-render" when injection into react-dom is made
  disableHotRendererWhenInjected: true,

  // Controls `react-🔥-dom patch` notification
  showReactDomPatchNotification: true,

  // Hook on babel component register.
  onComponentRegister: false,

  // Hook on React renders for a first time component
  onComponentCreate: false,

  // flag to completely disable RHL for SFC. Probably don't use it without dom patch made.
  ignoreSFC: false,

  // ignoreSFC when injection into react-dom is made
  ignoreSFCWhenInjected: true,

  // flag to completely disable RHL for Components
  ignoreComponents: false,

  // default value for AppContainer errorOverlay
  errorReporter: undefined,

  // Global error overlay
  ErrorOverlay: undefined,

  // Actively track lazy loaded components
  trackTailUpdates: true,

  // wrap lazy with AppProvider to allow independent updates
  wrapLazy: true,

  // react hot dom features enabled
  IS_REACT_MERGE_ENABLED: false
};

var internalConfiguration = {
  // control proxy creation
  disableProxyCreation: false
};

var setConfiguration = function setConfiguration(config) {
  // not using Object.assing for IE11 compliance
  for (var i in config) {
    if (config.hasOwnProperty(i)) {
      configuration[i] = config[i];
    }
  }
};

/* eslint-disable no-console */

var logger = {
  debug: function debug() {
    if (['debug'].indexOf(configuration.logLevel) !== -1) {
      var _console;

      (_console = console).debug.apply(_console, arguments);
    }
  },
  log: function log() {
    if (['debug', 'log'].indexOf(configuration.logLevel) !== -1) {
      var _console2;

      (_console2 = console).log.apply(_console2, arguments);
    }
  },
  warn: function warn() {
    if (['debug', 'log', 'warn'].indexOf(configuration.logLevel) !== -1) {
      var _console3;

      (_console3 = console).warn.apply(_console3, arguments);
    }
  },
  error: function error() {
    if (['debug', 'log', 'warn', 'error'].indexOf(configuration.logLevel) !== -1) {
      var _console4;

      (_console4 = console).error.apply(_console4, arguments);
    }
  }
};

/* eslint-disable no-eval, func-names */

function safeReactConstructor(Component, lastInstance) {
  try {
    if (lastInstance) {
      return new Component(lastInstance.props, lastInstance.context);
    }
    return new Component({}, {});
  } catch (e) {
    // some components, like Redux connect could not be created without proper context
  }
  return null;
}

function isNativeFunction(fn) {
  return typeof fn === 'function' ? fn.toString().indexOf('[native code]') > 0 : false;
}

var identity = function identity(a) {
  return a;
};
var indirectEval = eval;

var doesSupportClasses = function () {
  try {
    indirectEval('class Test {}');
    return true;
  } catch (e) {
    return false;
  }
}();

var ES6ProxyComponentFactory = function ES6ProxyComponentFactory(InitialParent, postConstructionAction) {
  return indirectEval('\n(function(InitialParent, postConstructionAction) {\n  return class ' + (InitialParent.name || 'HotComponent') + ' extends InitialParent {\n    /*\n     ! THIS IS NOT YOUR COMPONENT !\n     !  THIS IS REACT-HOT-LOADER  !\n  \n     this is a "' + InitialParent.name + '" component, patched by React-Hot-Loader\n     Sorry, but the real class code was hidden behind this facade\n     Please refer to https://github.com/gaearon/react-hot-loader for details...\n    */    \n    \n    constructor(props, context) {\n      super(props, context)\n      postConstructionAction.call(this)\n    }\n  }\n})\n')(InitialParent, postConstructionAction);
};

var ES5ProxyComponentFactory = function ES5ProxyComponentFactory(InitialParent, postConstructionAction) {
  function ProxyComponent(props, context) {
    InitialParent.call(this, props, context);
    postConstructionAction.call(this);
  }
  ProxyComponent.prototype = Object.create(InitialParent.prototype);
  Object.setPrototypeOf(ProxyComponent, InitialParent);
  return ProxyComponent;
};

var proxyClassCreator = doesSupportClasses ? ES6ProxyComponentFactory : ES5ProxyComponentFactory;

function getOwnKeys(target) {
  return [].concat(Object.getOwnPropertyNames(target), Object.getOwnPropertySymbols(target));
}

function shallowStringsEqual(a, b) {
  for (var key in a) {
    if (String(a[key]) !== String(b[key])) {
      return false;
    }
  }
  return true;
}

function deepPrototypeUpdate(dest, source) {
  var deepDest = Object.getPrototypeOf(dest);
  var deepSrc = Object.getPrototypeOf(source);
  if (deepDest && deepSrc && deepSrc !== deepDest) {
    deepPrototypeUpdate(deepDest, deepSrc);
  }
  if (source.prototype && source.prototype !== dest.prototype) {
    dest.prototype = source.prototype;
  }
}

function safeDefineProperty(target, key, props) {
  try {
    Object.defineProperty(target, key, props);
  } catch (e) {
    logger.warn('Error while wrapping', key, ' -> ', e);
  }
}

var PREFIX = '__reactstandin__';
var PROXY_KEY = PREFIX + 'key';
var GENERATION = PREFIX + 'proxyGeneration';
var REGENERATE_METHOD = PREFIX + 'regenerateByEval';
var UNWRAP_PROXY = PREFIX + 'getCurrent';
var CACHED_RESULT = PREFIX + 'cachedResult';
var PROXY_IS_MOUNTED = PREFIX + 'isMounted';

var RENDERED_GENERATION = 'REACT_HOT_LOADER_RENDERED_GENERATION';

var RESERVED_STATICS = ['length', 'displayName', 'name', 'arguments', 'caller', 'prototype', 'toString', 'valueOf', 'isStatelessFunctionalProxy', PROXY_KEY, UNWRAP_PROXY];

function transferStaticProps(ProxyComponent, savedDescriptors, PreviousComponent, NextComponent) {
  Object.getOwnPropertyNames(ProxyComponent).forEach(function (key) {
    if (RESERVED_STATICS.indexOf(key) !== -1) {
      return;
    }

    var prevDescriptor = Object.getOwnPropertyDescriptor(ProxyComponent, key);
    var savedDescriptor = savedDescriptors[key];

    if (!shallowEqual(prevDescriptor, savedDescriptor)) {
      safeDefineProperty(NextComponent, key, prevDescriptor);
    }
  });

  // Copy newly defined static methods and properties
  Object.getOwnPropertyNames(NextComponent).forEach(function (key) {
    if (RESERVED_STATICS.indexOf(key) !== -1) {
      return;
    }

    var prevDescriptor = PreviousComponent && Object.getOwnPropertyDescriptor(ProxyComponent, key);
    var savedDescriptor = savedDescriptors[key];

    // Skip redefined descriptors
    if (prevDescriptor && savedDescriptor && !shallowEqual(savedDescriptor, prevDescriptor)) {
      safeDefineProperty(NextComponent, key, prevDescriptor);
      return;
    }

    if (prevDescriptor && !savedDescriptor) {
      safeDefineProperty(ProxyComponent, key, prevDescriptor);
      return;
    }

    var nextDescriptor = _extends({}, Object.getOwnPropertyDescriptor(NextComponent, key), {
      configurable: true
    });

    savedDescriptors[key] = nextDescriptor;
    safeDefineProperty(ProxyComponent, key, nextDescriptor);
  });

  // Remove static methods and properties that are no longer defined
  Object.getOwnPropertyNames(ProxyComponent).forEach(function (key) {
    if (RESERVED_STATICS.indexOf(key) !== -1) {
      return;
    }
    // Skip statics that exist on the next class
    if (NextComponent.hasOwnProperty(key)) {
      return;
    }
    // Skip non-configurable statics
    var proxyDescriptor = Object.getOwnPropertyDescriptor(ProxyComponent, key);
    if (proxyDescriptor && !proxyDescriptor.configurable) {
      return;
    }

    var prevDescriptor = PreviousComponent && Object.getOwnPropertyDescriptor(PreviousComponent, key);
    var savedDescriptor = savedDescriptors[key];

    // Skip redefined descriptors
    if (prevDescriptor && savedDescriptor && !shallowEqual(savedDescriptor, prevDescriptor)) {
      return;
    }

    safeDefineProperty(ProxyComponent, key, {
      value: undefined
    });
  });

  return savedDescriptors;
}

function mergeComponents(ProxyComponent, NextComponent, InitialComponent, lastInstance, injectedMembers) {
  var injectedCode = {};
  try {
    var nextInstance = safeReactConstructor(NextComponent, lastInstance);

    try {
      // Bypass babel class inheritance checking
      deepPrototypeUpdate(InitialComponent, NextComponent);
    } catch (e) {
      // It was ES6 class
    }

    var proxyInstance = safeReactConstructor(ProxyComponent, lastInstance);

    if (!nextInstance || !proxyInstance) {
      return injectedCode;
    }

    var mergedAttrs = _extends({}, proxyInstance, nextInstance);
    var hasRegenerate = proxyInstance[REGENERATE_METHOD];
    var ownKeys = getOwnKeys(Object.getPrototypeOf(ProxyComponent.prototype));
    Object.keys(mergedAttrs).forEach(function (key) {
      if (key.indexOf(PREFIX) === 0) return;
      var nextAttr = nextInstance[key];
      var prevAttr = proxyInstance[key];
      if (nextAttr) {
        if (isNativeFunction(nextAttr) || isNativeFunction(prevAttr)) {
          // this is bound method
          var isSameArity = nextAttr.length === prevAttr.length;
          var existsInPrototype = ownKeys.indexOf(key) >= 0 || ProxyComponent.prototype[key];
          if ((isSameArity || !prevAttr) && existsInPrototype) {
            if (hasRegenerate) {
              injectedCode[key] = 'Object.getPrototypeOf(this)[\'' + key + '\'].bind(this)';
            } else {
              logger.warn('React Hot Loader:,', 'Non-controlled class', ProxyComponent.name, 'contains a new native or bound function ', key, nextAttr, '. Unable to reproduce');
            }
          } else {
            logger.warn('React Hot Loader:', 'Updated class ', ProxyComponent.name, 'contains native or bound function ', key, nextAttr, '. Unable to reproduce, use arrow functions instead.', '(arity: ' + nextAttr.length + '/' + prevAttr.length + ', proto: ' + (existsInPrototype ? 'yes' : 'no'));
          }
          return;
        }

        var nextString = String(nextAttr);
        var injectedBefore = injectedMembers[key];
        var isArrow = nextString.indexOf('=>') >= 0;
        var isFunction = nextString.indexOf('function') >= 0 || isArrow;
        var referToThis = nextString.indexOf('this') >= 0;
        if (nextString !== String(prevAttr) || injectedBefore && nextString !== String(injectedBefore) || isArrow && referToThis) {
          if (!hasRegenerate) {
            if (!isFunction) {
              // just copy prop over
              injectedCode[key] = nextAttr;
            } else {
              logger.warn('React Hot Loader:', ' Updated class ', ProxyComponent.name, 'had different code for', key, nextAttr, '. Unable to reproduce. Regeneration support needed.');
            }
          } else {
            injectedCode[key] = nextAttr;
          }
        }
      }
    });
  } catch (e) {
    logger.warn('React Hot Loader:', e);
  }
  return injectedCode;
}

function checkLifeCycleMethods(ProxyComponent, NextComponent) {
  try {
    var p1 = Object.getPrototypeOf(ProxyComponent.prototype);
    var p2 = NextComponent.prototype;
    reactLifeCycleMountMethods.forEach(function (key) {
      var d1 = Object.getOwnPropertyDescriptor(p1, key) || { value: p1[key] };
      var d2 = Object.getOwnPropertyDescriptor(p2, key) || { value: p2[key] };
      if (!shallowStringsEqual(d1, d2)) {
        logger.warn('React Hot Loader:', 'You did update', ProxyComponent.name, 's lifecycle method', key, '. Unable to repeat');
      }
    });
  } catch (e) {
    // Ignore errors
  }
}

function inject(target, currentGeneration, injectedMembers) {
  if (target[GENERATION] !== currentGeneration) {
    var hasRegenerate = !!target[REGENERATE_METHOD];
    Object.keys(injectedMembers).forEach(function (key) {
      try {
        if (hasRegenerate) {
          var usedThis = String(injectedMembers[key]).match(/_this([\d]+)/gi) || [];
          target[REGENERATE_METHOD](key, '(function REACT_HOT_LOADER_SANDBOX () {\n          var _this  = this; // common babel transpile\n          ' + usedThis.map(function (name) {
            return 'var ' + name + ' = this;';
          }) + '\n\n          return ' + injectedMembers[key] + ';\n          }).call(this)');
        } else {
          target[key] = injectedMembers[key];
        }
      } catch (e) {
        logger.warn('React Hot Loader: Failed to regenerate method ', key, ' of class ', target);
        logger.warn('got error', e);
      }
    });

    target[GENERATION] = currentGeneration;
  }
}

var has = Object.prototype.hasOwnProperty;

var proxies = new WeakMap();

var resetClassProxies = function resetClassProxies() {
  proxies = new WeakMap();
};

var blackListedClassMembers = ['constructor', 'render', 'componentWillMount', 'componentDidMount', 'componentDidCatch', 'componentWillReceiveProps', 'componentWillUnmount', 'hotComponentRender', 'getInitialState', 'getDefaultProps'];

var defaultRenderOptions = {
  componentWillRender: identity,
  componentDidUpdate: function componentDidUpdate(result) {
    return result;
  },
  componentDidRender: function componentDidRender(result) {
    return result;
  }
};

var filteredPrototypeMethods = function filteredPrototypeMethods(Proto) {
  return Object.getOwnPropertyNames(Proto).filter(function (prop) {
    var descriptor = Object.getOwnPropertyDescriptor(Proto, prop);
    return descriptor && prop.indexOf(PREFIX) !== 0 && blackListedClassMembers.indexOf(prop) < 0 && typeof descriptor.value === 'function';
  });
};

var defineClassMember = function defineClassMember(Class, methodName, methodBody) {
  return safeDefineProperty(Class.prototype, methodName, {
    configurable: true,
    writable: true,
    enumerable: false,
    value: methodBody
  });
};

var defineClassMembers = function defineClassMembers(Class, methods) {
  return Object.keys(methods).forEach(function (methodName) {
    return defineClassMember(Class, methodName, methods[methodName]);
  });
};

var setSFPFlag = function setSFPFlag(component, flag) {
  return safeDefineProperty(component, 'isStatelessFunctionalProxy', {
    configurable: false,
    writable: false,
    enumerable: false,
    value: flag
  });
};

var copyMethodDescriptors = function copyMethodDescriptors(target, source) {
  if (source) {
    // it is possible to use `function-double` to construct an ideal clone, but does not make a sence
    var keys = Object.getOwnPropertyNames(source);

    keys.forEach(function (key) {
      return safeDefineProperty(target, key, Object.getOwnPropertyDescriptor(source, key));
    });

    safeDefineProperty(target, 'toString', {
      configurable: true,
      writable: false,
      enumerable: false,
      value: function toString() {
        return String(source);
      }
    });
  }

  return target;
};

var knownClassComponents = [];

var forEachKnownClass = function forEachKnownClass(cb) {
  return knownClassComponents.forEach(cb);
};

function createClassProxy(InitialComponent, proxyKey) {
  var options = arguments.length > 2 && arguments[2] !== undefined ? arguments[2] : {};

  var renderOptions = _extends({}, defaultRenderOptions, options);
  var proxyConfig = _extends({}, configuration, options.proxy);
  // Prevent double wrapping.
  // Given a proxy class, return the existing proxy managing it.
  var existingProxy = proxies.get(InitialComponent);

  if (existingProxy) {
    return existingProxy;
  }

  var CurrentComponent = void 0;
  var savedDescriptors = {};
  var injectedMembers = {};
  var proxyGeneration = 0;
  var classUpdatePostponed = null;
  var instancesCount = 0;
  var isFunctionalComponent = !isReactClass(InitialComponent);

  var lastInstance = null;

  function postConstructionAction() {
    this[GENERATION] = 0;

    lastInstance = this;
    // is there is an update pending
    if (classUpdatePostponed) {
      var callUpdate = classUpdatePostponed;
      classUpdatePostponed = null;
      callUpdate();
    }
    // As long we can't override constructor
    // every class shall evolve from a base class
    inject(this, proxyGeneration, injectedMembers);
  }

  function proxiedUpdate() {
    if (this) {
      inject(this, proxyGeneration, injectedMembers);
    }
  }

  function lifeCycleWrapperFactory(wrapperName) {
    var sideEffect = arguments.length > 1 && arguments[1] !== undefined ? arguments[1] : identity;

    return copyMethodDescriptors(function wrappedMethod() {
      proxiedUpdate.call(this);
      sideEffect(this);

      for (var _len = arguments.length, rest = Array(_len), _key = 0; _key < _len; _key++) {
        rest[_key] = arguments[_key];
      }

      return !isFunctionalComponent && CurrentComponent.prototype[wrapperName] && CurrentComponent.prototype[wrapperName].apply(this, rest);
    }, InitialComponent.prototype && InitialComponent.prototype[wrapperName]);
  }

  function methodWrapperFactory(wrapperName, realMethod) {
    return copyMethodDescriptors(function wrappedMethod() {
      for (var _len2 = arguments.length, rest = Array(_len2), _key2 = 0; _key2 < _len2; _key2++) {
        rest[_key2] = arguments[_key2];
      }

      return realMethod.apply(this, rest);
    }, realMethod);
  }

  var fakeBasePrototype = function fakeBasePrototype(Proto) {
    return filteredPrototypeMethods(Proto).reduce(function (acc, key) {
      acc[key] = methodWrapperFactory(key, Proto[key]);
      return acc;
    }, {});
  };

  var componentDidMount = lifeCycleWrapperFactory('componentDidMount', function (target) {
    target[PROXY_IS_MOUNTED] = true;
    target[RENDERED_GENERATION] = get$1();
    instancesCount++;
  });
  var componentDidUpdate = lifeCycleWrapperFactory('componentDidUpdate', renderOptions.componentDidUpdate);
  var componentWillUnmount = lifeCycleWrapperFactory('componentWillUnmount', function (target) {
    target[PROXY_IS_MOUNTED] = false;
    instancesCount--;
  });

  function hotComponentRender() {
    // repeating subrender call to keep RENDERED_GENERATION up to date
    renderOptions.componentWillRender(this);
    proxiedUpdate.call(this);
    var result = void 0;

    // We need to use hasOwnProperty here, as the cached result is a React node
    // and can be null or some other falsy value.
    if (has.call(this, CACHED_RESULT)) {
      result = this[CACHED_RESULT];
      delete this[CACHED_RESULT];
    } else if (isFunctionalComponent) {
      result = CurrentComponent(this.props, this.context);
    } else {
      var renderMethod = CurrentComponent.prototype.render || this.render;
      /* eslint-disable no-use-before-define */
      if (renderMethod === proxiedRender) {
        throw new Error('React-Hot-Loader: you are trying to render Component without .render method');
      }
      /* eslint-enable */
      result = renderMethod.apply(this,
      // eslint-disable-next-line prefer-rest-params
      arguments);
    }

    return renderOptions.componentDidRender.call(this, result);
  }

  function hotComponentUpdate() {
    renderOptions.componentWillRender(this);
    proxiedUpdate.call(this);
  }

  function proxiedRender() {
    renderOptions.componentWillRender(this);

    for (var _len3 = arguments.length, args = Array(_len3), _key3 = 0; _key3 < _len3; _key3++) {
      args[_key3] = arguments[_key3];
    }

    return hotComponentRender.call.apply(hotComponentRender, [this].concat(args));
  }

  var defineProxyMethods = function defineProxyMethods(Proxy) {
    var Base = arguments.length > 1 && arguments[1] !== undefined ? arguments[1] : {};

    defineClassMembers(Proxy, _extends({}, fakeBasePrototype(Base), proxyConfig.pureRender ? {} : { render: proxiedRender }, {
      hotComponentRender: hotComponentRender,
      hotComponentUpdate: hotComponentUpdate,
      componentDidMount: componentDidMount,
      componentDidUpdate: componentDidUpdate,
      componentWillUnmount: componentWillUnmount
    }));
  };

  var _ProxyFacade = void 0;
  var ProxyComponent = null;
  var proxy = void 0;

  if (!isFunctionalComponent) {
    // Component
    ProxyComponent = proxyClassCreator(InitialComponent, postConstructionAction);

    defineProxyMethods(ProxyComponent, InitialComponent.prototype);

    knownClassComponents.push(ProxyComponent);

    _ProxyFacade = ProxyComponent;
  } else if (!proxyConfig.allowSFC) {
    proxyConfig.pureRender = false;
    // SFC Converted to component. Does not support returning precreated instances from render.
    ProxyComponent = proxyClassCreator(React.Component, postConstructionAction);

    defineProxyMethods(ProxyComponent);
    _ProxyFacade = ProxyComponent;
  } else {
    // SFC

    // This function only gets called for the initial mount. The actual
    // rendered component instance will be the return value.

    // eslint-disable-next-line func-names
    _ProxyFacade = function ProxyFacade(props, context) {
      /*
         ! THIS IS NOT YOUR COMPONENT !
        !  THIS IS REACT-HOT-LOADER  !
         And you are probably looking for a function component of yours
        It's hidden, but there is a way to fix this - just reconfigure your application a bit
        see https://github.com/gaearon/react-hot-loader/issues/1311
        */

      var result = CurrentComponent(props, context);

      // This is a Relay-style container constructor. We can't do the prototype-
      // style wrapping for this as we do elsewhere, so just we just pass it
      // through as-is.
      if (isReactClassInstance(result)) {
        ProxyComponent = null;

        // Relay lazily sets statics like getDerivedStateFromProps on initial
        // render in lazy construction, so we need to do the same here.
        transferStaticProps(_ProxyFacade, savedDescriptors, null, CurrentComponent);

        return result;
      }

      // simple SFC, could continue to be SFC
      if (proxyConfig.pureSFC) {
        if (!CurrentComponent.contextTypes) {
          if (!_ProxyFacade.isStatelessFunctionalProxy) {
            setSFPFlag(_ProxyFacade, true);
          }

          return renderOptions.componentDidRender(result);
        }
      }
      setSFPFlag(_ProxyFacade, false);
      proxyConfig.pureRender = false;

      // Otherwise, it's a normal functional component. Build the real proxy
      // and use it going forward.
      ProxyComponent = proxyClassCreator(React.Component, postConstructionAction);

      defineProxyMethods(ProxyComponent);

      var determinateResult = new ProxyComponent(props, context);

      // Cache the initial render result so we don't call the component function
      // a second time for the initial render.
      determinateResult[CACHED_RESULT] = result;
      return determinateResult;
    };
  }

  function get$$1() {
    return _ProxyFacade;
  }

  function getCurrent() {
    return CurrentComponent;
  }

  safeDefineProperty(_ProxyFacade, UNWRAP_PROXY, {
    configurable: false,
    writable: false,
    enumerable: false,
    value: getCurrent
  });

  safeDefineProperty(_ProxyFacade, PROXY_KEY, {
    configurable: false,
    writable: false,
    enumerable: false,
    value: proxyKey
  });

  safeDefineProperty(_ProxyFacade, 'toString', {
    configurable: true,
    writable: false,
    enumerable: false,
    value: function toString() {
      return String(CurrentComponent);
    }
  });

  function update(NextComponent) {
    if (typeof NextComponent !== 'function') {
      throw new Error('Expected a constructor.');
    }

    if (NextComponent === CurrentComponent) {
      return false;
    }

    // Prevent proxy cycles
    var existingProxy = proxies.get(NextComponent);
    if (existingProxy) {
      return false;
    }

    isFunctionalComponent = !isReactClass(NextComponent);

    proxies.set(NextComponent, proxy);

    proxyGeneration++;

    // Save the next constructor so we call it
    var PreviousComponent = CurrentComponent;
    CurrentComponent = NextComponent;

    // Try to infer displayName
    var displayName = getComponentDisplayName(CurrentComponent);

    safeDefineProperty(_ProxyFacade, 'displayName', {
      configurable: true,
      writable: false,
      enumerable: true,
      value: displayName
    });

    if (ProxyComponent) {
      safeDefineProperty(ProxyComponent, 'name', {
        value: displayName
      });
    }

    savedDescriptors = transferStaticProps(_ProxyFacade, savedDescriptors, PreviousComponent, NextComponent);

    if (isFunctionalComponent || !ProxyComponent) ; else {
      var classHotReplacement = function classHotReplacement() {
        checkLifeCycleMethods(ProxyComponent, NextComponent);
        if (proxyGeneration > 1) {
          getElementCloseHook(ProxyComponent);
          filteredPrototypeMethods(ProxyComponent.prototype).forEach(function (methodName) {
            if (!has.call(NextComponent.prototype, methodName)) {
              delete ProxyComponent.prototype[methodName];
            }
          });
        }
        Object.setPrototypeOf(ProxyComponent.prototype, NextComponent.prototype);
        defineProxyMethods(ProxyComponent, NextComponent.prototype);
        if (proxyGeneration > 1) {
          injectedMembers = mergeComponents(ProxyComponent, NextComponent, InitialComponent, lastInstance, injectedMembers);
          getElementComparisonHook(ProxyComponent);
        }
      };

      // Was constructed once
      if (instancesCount > 0) {
        classHotReplacement();
      } else {
        classUpdatePostponed = classHotReplacement;
      }
    }

    return true;
  }

  update(InitialComponent);

  var dereference = function dereference() {
    proxies.delete(InitialComponent);
    proxies.delete(_ProxyFacade);
    proxies.delete(CurrentComponent);
  };

  proxy = { get: get$$1, update: update, dereference: dereference, getCurrent: function getCurrent() {
      return CurrentComponent;
    } };

  proxies.set(InitialComponent, proxy);
  proxies.set(_ProxyFacade, proxy);

  safeDefineProperty(proxy, UNWRAP_PROXY, {
    configurable: false,
    writable: false,
    enumerable: false,
    value: getCurrent
  });

  return proxy;
}

// this counter tracks `register` invocations.
// works good, but code splitting is breaking it
var generation = 1;

// these counters are aimed to mitigate the "first render"
var hotComparisonCounter = 0;
var hotComparisonRuns = 0;
var hotReplacementGeneration = 0;

var nullFunction = function nullFunction() {
  return {};
};

// these callbacks would be called on component update
var onHotComparisonOpen = nullFunction;
var onHotComparisonElement = nullFunction;
var onHotComparisonClose = nullFunction;

// inversion of control
var setComparisonHooks = function setComparisonHooks(open, element, close) {
  onHotComparisonOpen = open;
  onHotComparisonElement = element;
  onHotComparisonClose = close;
};

var getElementComparisonHook = function getElementComparisonHook(component) {
  return onHotComparisonElement(component);
};
var getElementCloseHook = function getElementCloseHook(component) {
  return onHotComparisonClose(component);
};

var hotComparisonOpen = function hotComparisonOpen() {
  return hotComparisonCounter > 0 && hotComparisonRuns > 0 && hotReplacementGeneration > 0;
};

var openGeneration = function openGeneration() {
  return forEachKnownClass(onHotComparisonElement);
};

var closeGeneration = function closeGeneration() {
  return forEachKnownClass(onHotComparisonClose);
};

var incrementHot = function incrementHot() {
  if (!hotComparisonCounter) {
    openGeneration();
    onHotComparisonOpen();
  }
  hotComparisonCounter++;
};
var decrementHot = function decrementHot() {
  hotComparisonCounter--;
  if (!hotComparisonCounter) {
    closeGeneration();
    hotComparisonRuns++;
  }
};

// TODO: shall it be called from incrementHotGeneration?
var enterHotUpdate = function enterHotUpdate() {
  Promise.resolve(incrementHot()).then(function () {
    return setTimeout(decrementHot, 0);
  });
};

// TODO: deprecate?
var increment = function increment() {
  enterHotUpdate();
  return generation++;
};
var get$1 = function get() {
  return generation;
};

// These counters tracks HMR generations, and probably should be used instead of the old one
var incrementHotGeneration = function incrementHotGeneration() {
  return hotReplacementGeneration++;
};
var getHotGeneration = function getHotGeneration() {
  return hotReplacementGeneration;
};

// some `empty` names, React can autoset display name to...
var UNDEFINED_NAMES = {
  Unknown: true,
  Component: true
};

var areNamesEqual = function areNamesEqual(a, b) {
  return a === b || UNDEFINED_NAMES[a] && UNDEFINED_NAMES[b];
};

var isFunctional = function isFunctional(fn) {
  return typeof fn === 'function';
};
var getTypeOf = function getTypeOf(type) {
  if (isReactClass(type)) return 'ReactComponent';
  if (isFunctional(type)) return 'StatelessFunctional';
  return 'Fragment'; // ?
};

function clearStringFast(str) {
  return str.length < 12 ? str : (' ' + str).slice(1);
}

var haveTextSimilarity = function haveTextSimilarity(a, b) {
  return (
    // equal or slight changed
    a === b || levenshtein.get(clearStringFast(a), clearStringFast(b)) < a.length * 0.2
  );
};

var getBaseProto = function getBaseProto(source) {
  return source.prototype.hotComponentRender ? Object.getPrototypeOf(source.prototype) : source.prototype;
};

var equalClasses = function equalClasses(a, b) {
  var prototypeA = getBaseProto(a);
  var prototypeB = getBaseProto(b);

  var hits = 0;
  var misses = 0;
  var comparisons = 0;
  Object.getOwnPropertyNames(prototypeA).forEach(function (key) {
    var descriptorA = Object.getOwnPropertyDescriptor(prototypeA, key);
    var valueA = descriptorA && (descriptorA.value || descriptorA.get || descriptorA.set);
    var descriptorB = Object.getOwnPropertyDescriptor(prototypeB, key);
    var valueB = descriptorB && (descriptorB.value || descriptorB.get || descriptorB.set);

    if (typeof valueA === 'function' && key !== 'constructor') {
      comparisons++;
      if (haveTextSimilarity(String(valueA), String(valueB))) {
        hits++;
      } else {
        misses++;
        if (key === 'render') {
          misses++;
        }
      }
    }
  });
  // allow to add or remove one function
  return hits > 0 && misses <= 1 || comparisons === 0;
};

var areSwappable = function areSwappable(a, b) {
  // both are registered components and have the same name
  if (getIdByType(b) && getIdByType(a) === getIdByType(b)) {
    return true;
  }
  if (getTypeOf(a) !== getTypeOf(b)) {
    return false;
  }
  if (isReactClass(a)) {
    return areNamesEqual(getComponentDisplayName(a), getComponentDisplayName(b)) && equalClasses(a, b);
  }

  if (isFunctional(a)) {
    var nameA = getComponentDisplayName(a);
    if (!areNamesEqual(nameA, getComponentDisplayName(b))) {
      return false;
    }
    return nameA !== 'Component' || haveTextSimilarity(String(a), String(b));
  }
  return false;
};

function merge() {
  var acc = {};

  for (var _len = arguments.length, sources = Array(_len), _key = 0; _key < _len; _key++) {
    sources[_key] = arguments[_key];
  }

  for (var _iterator = sources, _isArray = Array.isArray(_iterator), _i = 0, _iterator = _isArray ? _iterator : _iterator[Symbol.iterator]();;) {
    var _ref;

    if (_isArray) {
      if (_i >= _iterator.length) break;
      _ref = _iterator[_i++];
    } else {
      _i = _iterator.next();
      if (_i.done) break;
      _ref = _i.value;
    }

    var source = _ref;

    if (source instanceof Array) {
      if (!(acc instanceof Array)) {
        acc = [];
      }
      acc = [].concat(acc, source);
    } else if (source instanceof Object) {
      for (var _iterator2 = Object.keys(source), _isArray2 = Array.isArray(_iterator2), _i2 = 0, _iterator2 = _isArray2 ? _iterator2 : _iterator2[Symbol.iterator]();;) {
        var _babelHelpers$extends;

        var _ref2;

        if (_isArray2) {
          if (_i2 >= _iterator2.length) break;
          _ref2 = _iterator2[_i2++];
        } else {
          _i2 = _iterator2.next();
          if (_i2.done) break;
          _ref2 = _i2.value;
        }

        var key = _ref2;

        var value = source[key];
        if (value instanceof Object && key in acc) {
          value = merge(acc[key], value);
        }
        acc = _extends({}, acc, (_babelHelpers$extends = {}, _babelHelpers$extends[key] = value, _babelHelpers$extends));
      }
    }
  }
  return acc;
}

var signatures = void 0;
var proxiesByID = void 0;
var blackListedProxies = void 0;
var registeredComponents = void 0;
var idsByType = void 0;

var elementCount = 0;
var renderOptions = {};

var componentOptions = void 0;

var generateTypeId = function generateTypeId() {
  return 'auto-' + elementCount++;
};

var getIdByType = function getIdByType(type) {
  return idsByType.get(type);
};
var isProxyType = function isProxyType(type) {
  return type[PROXY_KEY];
};

var getProxyById = function getProxyById(id) {
  return proxiesByID[id];
};
var getProxyByType = function getProxyByType(type) {
  return getProxyById(getIdByType(type));
};

var registerComponent = function registerComponent(type) {
  return registeredComponents.set(type, 1);
};
var isRegisteredComponent = function isRegisteredComponent(type) {
  return registeredComponents.has(type);
};

var setStandInOptions = function setStandInOptions(options) {
  renderOptions = options;
};

var updateFunctionProxyById = function updateFunctionProxyById(id, type, updater) {
  // Remember the ID.
  idsByType.set(type, id);
  var proxy = proxiesByID[id];
  if (!proxy) {
    proxiesByID[id] = type;
  }
  updater(proxiesByID[id], type);
  // proxiesByID[id] = type; // keep the first ref

  return proxiesByID[id];
};

var updateProxyById = function updateProxyById(id, type) {
  var options = arguments.length > 2 && arguments[2] !== undefined ? arguments[2] : {};

  if (!id) {
    return null;
  }
  // Remember the ID.
  idsByType.set(type, id);

  if (!proxiesByID[id]) {
    proxiesByID[id] = createClassProxy(type, id, merge({}, renderOptions, { proxy: componentOptions.get(type) || {} }, options));
  } else if (proxiesByID[id].update(type)) {
    // proxy could be registered again only in case of HMR
    incrementHotGeneration();
  }
  return proxiesByID[id];
};

var createProxyForType = function createProxyForType(type, options) {
  return getProxyByType(type) || updateProxyById(generateTypeId(), type, options);
};

var isColdType = function isColdType(type) {
  return blackListedProxies.has(type);
};

var isTypeBlacklisted = function isTypeBlacklisted(type) {
  return isColdType(type) || isCompositeComponent(type) && (configuration.ignoreSFC && !isReactClass(type) || configuration.ignoreComponents && isReactClass(type));
};
var blacklistByType = function blacklistByType(type) {
  return blackListedProxies.set(type, true);
};

var setComponentOptions = function setComponentOptions(component, options) {
  return componentOptions.set(component, options);
};

var addSignature = function addSignature(type, signature) {
  return signatures.set(type, signature);
};
var getSignature = function getSignature(type) {
  return signatures.get(type);
};

var resetProxies = function resetProxies() {
  proxiesByID = {};
  idsByType = new WeakMap();
  blackListedProxies = new WeakMap();
  registeredComponents = new WeakMap();
  componentOptions = new WeakMap();
  signatures = new WeakMap();
  resetClassProxies();
};

resetProxies();

var tune = {
  allowSFC: false
};

var preactAdapter = function preactAdapter(instance, resolveType) {
  var oldHandler = instance.options.vnode;

  setConfiguration(tune);

  instance.options.vnode = function (vnode) {
    if (vnode.type) {
      vnode.type = resolveType(vnode.type);
    } else if (vnode.nodeName) {
      vnode.nodeName = resolveType(vnode.nodeName);
    }
    if (oldHandler) {
      oldHandler(vnode);
    }
  };
};

/* global document */

var lastError = [];

var overlayStyle = {
  position: 'fixed',
  left: 0,
  top: 0,
  right: 0,

  backgroundColor: 'rgba(255,200,200,0.9)',

  color: '#000',
  fontFamily: '-apple-system, BlinkMacSystemFont, "Segoe UI", "Roboto", "Oxygen", "Ubuntu", "Fira Sans", "Droid Sans", "Helvetica Neue", sans-serif',
  fontSize: '12px',
  margin: 0,
  padding: '16px',
  maxHeight: '50%',
  overflow: 'auto',
  zIndex: 10000
};

var inlineErrorStyle = {
  backgroundColor: '#FEE'
};

var liCounter = {
  position: 'absolute',
  left: '10px'
};

var listStyle = {};

var EmptyErrorPlaceholder = function EmptyErrorPlaceholder(_ref) {
  var component = _ref.component;
  return React__default.createElement(
    'span',
    { style: inlineErrorStyle, role: 'img', 'aria-label': 'Rect-Hot-Loader Error' },
    '\u269B\uFE0F\uD83D\uDD25\uD83E\uDD15 (',
    component ? getComponentDisplayName(component.constructor || component) : 'Unknown location',
    ')',
    component && component.retryHotLoaderError && React__default.createElement(
      'button',
      { onClick: function onClick() {
          return component.retryHotLoaderError();
        }, title: 'Retry' },
      '\u27F3'
    )
  );
};

var errorHeader = function errorHeader(component, componentStack) {
  if (component || componentStack) {
    return React__default.createElement(
      'span',
      null,
      '(',
      component ? getComponentDisplayName(component.constructor || component) : 'Unknown location',
      component && ', ',
      componentStack && componentStack.split('\n').filter(Boolean)[0],
      ')'
    );
  }
  return null;
};

var mapError = function mapError(_ref2) {
  var error = _ref2.error,
      errorInfo = _ref2.errorInfo,
      component = _ref2.component;

  if (!error) {
    error = { message: 'undefined error' };
  }

  return React__default.createElement(
    React__default.Fragment,
    null,
    React__default.createElement(
      'p',
      { style: { color: 'red' } },
      errorHeader(component, errorInfo && errorInfo.componentStack),
      ' ',
      error.toString ? error.toString() : error && error.message || 'undefined error'
    ),
    errorInfo && errorInfo.componentStack ? React__default.createElement(
      'div',
      null,
      React__default.createElement(
        'div',
        null,
        'Stack trace:'
      ),
      React__default.createElement(
        'ul',
        { style: { color: 'red', marginTop: '10px' } },
        error.stack.split('\n').slice(1, 2).map(function (line, i) {
          return React__default.createElement(
            'li',
            { key: String(i) },
            line
          );
        }),
        React__default.createElement('hr', null),
        errorInfo.componentStack.split('\n').filter(Boolean).map(function (line, i) {
          return React__default.createElement(
            'li',
            { key: String(i) },
            line
          );
        })
      )
    ) : error.stack && React__default.createElement(
      'div',
      null,
      React__default.createElement(
        'div',
        null,
        'Stack trace:'
      ),
      React__default.createElement(
        'ul',
        { style: { color: 'red', marginTop: '10px' } },
        error.stack.split('\n').map(function (line, i) {
          return React__default.createElement(
            'li',
            { key: String(i) },
            line
          );
        })
      )
    )
  );
};

var ErrorOverlay = function (_React$Component) {
  inherits(ErrorOverlay, _React$Component);

  function ErrorOverlay() {
    var _temp, _this, _ret;

    classCallCheck(this, ErrorOverlay);

    for (var _len = arguments.length, args = Array(_len), _key = 0; _key < _len; _key++) {
      args[_key] = arguments[_key];
    }

    return _ret = (_temp = (_this = possibleConstructorReturn(this, _React$Component.call.apply(_React$Component, [this].concat(args))), _this), _this.state = {
      visible: true
    }, _this.toggle = function () {
      return _this.setState({ visible: !_this.state.visible });
    }, _this.retry = function () {
      return _this.setState(function () {
        var errors = _this.props.errors;

        enterHotUpdate();
        clearExceptions();
        errors.map(function (_ref3) {
          var component = _ref3.component;
          return component;
        }).filter(Boolean).filter(function (_ref4) {
          var retryHotLoaderError = _ref4.retryHotLoaderError;
          return !!retryHotLoaderError;
        }).forEach(function (component) {
          return component.retryHotLoaderError();
        });

        return {};
      });
    }, _temp), possibleConstructorReturn(_this, _ret);
  }

  ErrorOverlay.prototype.render = function render() {
    var errors = this.props.errors;

    if (!errors.length) {
      return null;
    }
    var visible = this.state.visible;

    return React__default.createElement(
      'div',
      { style: overlayStyle },
      React__default.createElement(
        'h2',
        { style: { margin: 0 } },
        '\u269B\uFE0F\uD83D\uDD25\uD83D\uDE2D: hot update was not successful ',
        React__default.createElement(
          'button',
          { onClick: this.toggle },
          visible ? 'collapse' : 'expand'
        ),
        React__default.createElement(
          'button',
          { onClick: this.retry },
          'Retry'
        )
      ),
      visible && React__default.createElement(
        'ul',
        { style: listStyle },
        errors.map(function (err, i) {
          return React__default.createElement(
            'li',
            { key: i },
            React__default.createElement(
              'span',
              { style: liCounter },
              '(',
              i + 1,
              '/',
              errors.length,
              ')'
            ),
            mapError(err)
          );
        })
      )
    );
  };

  return ErrorOverlay;
}(React__default.Component);

var initErrorOverlay = function initErrorOverlay() {
  if (typeof document === 'undefined' || !document.body) {
    return;
  }
  var div = document.querySelector('.react-hot-loader-error-overlay');
  if (!div) {
    div = document.createElement('div');
    div.className = 'react-hot-loader-error-overlay';
    document.body.appendChild(div);
  }
  if (lastError.length) {
    var Overlay = configuration.ErrorOverlay || ErrorOverlay;
    ReactDOM.render(React__default.createElement(Overlay, { errors: lastError }), div);
  } else {
    div.parentNode.removeChild(div);
  }
};

function clearExceptions() {
  if (lastError.length) {
    lastError = [];
    initErrorOverlay();
  }
}

function logException(error, errorInfo, component) {
  // do not suppress error

  /* eslint-disable no-console */
  console.error(error);
  /* eslint-enable */

  lastError.push({ error: error, errorInfo: errorInfo, component: component });
  initErrorOverlay();
}

/* eslint-disable no-underscore-dangle */

var hotRenderWithHooks = ReactDOM.hotRenderWithHooks || function (fiber