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strict';\n\nfunction _interopDefault(ex) {\n  return ex && typeof ex === 'object' && 'default' in ex ? ex['default'] : ex;\n}\nvar React = require('react');\nvar React__default = _interopDefault(React);\nvar shallowEqual = _interopDefault(require('shallowequal'));\nfunction _defineProperty(obj, key, value) {\n  if (key in obj) {\n    Object.defineProperty(obj, key, {\n      value: value,\n      enumerable: true,\n      configurable: true,\n      writable: true\n    });\n  } else {\n    obj[key] = value;\n  }\n  return obj;\n}\nfunction _inheritsLoose(subClass, superClass) {\n  subClass.prototype = Object.create(superClass.prototype);\n  subClass.prototype.constructor = subClass;\n  subClass.__proto__ = superClass;\n}\nvar canUseDOM = !!(typeof window !== 'undefined' && window.document && window.document.createElement);\nfunction withSideEffect(reducePropsToState, handleStateChangeOnClient, mapStateOnServer) {\n  if (typeof reducePropsToState !== 'function') {\n    throw new Error('Expected reducePropsToState to be a function.');\n  }\n  if (typeof handleStateChangeOnClient !== 'function') {\n    throw new Error('Expected handleStateChangeOnClient to be a function.');\n  }\n  if (typeof mapStateOnServer !== 'undefined' && typeof mapStateOnServer !== 'function') {\n    throw new Error('Expected mapStateOnServer to either be undefined or a function.');\n  }\n  function getDisplayName(WrappedComponent) {\n    return WrappedComponent.displayName || WrappedComponent.name || 'Component';\n  }\n  return function wrap(WrappedComponent) {\n    if (typeof WrappedComponent !== 'function') {\n      throw new Error('Expected WrappedComponent to be a React component.');\n    }\n    var mountedInstances = [];\n    var state;\n    function emitChange() {\n      state = reducePropsToState(mountedInstances.map(function (instance) {\n        return instance.props;\n      }));\n      if (SideEffect.canUseDOM) {\n        handleStateChangeOnClient(state);\n      } else if (mapStateOnServer) {\n        state = mapStateOnServer(state);\n      }\n    }\n    var SideEffect = /*#__PURE__*/\n    function (_Component) {\n      _inheritsLoose(SideEffect, _Component);\n      function SideEffect() {\n        return _Component.apply(this, arguments) || this;\n      }\n\n      // Try to use displayName of wrapped component\n      // Expose canUseDOM so tests can monkeypatch it\n      SideEffect.peek = function peek() {\n        return state;\n      };\n      SideEffect.rewind = function rewind() {\n        if (SideEffect.canUseDOM) {\n          throw new Error('You may only call rewind() on the server. Call peek() to read the current state.');\n        }\n        var recordedState = state;\n        state = undefined;\n        mountedInstances = [];\n        return recordedState;\n      };\n      var _proto = SideEffect.prototype;\n      _proto.shouldComponentUpdate = function shouldComponentUpdate(nextProps) {\n        return !shallowEqual(nextProps, this.props);\n      };\n      _proto.componentWillMount = function componentWillMount() {\n        mountedInstances.push(this);\n        emitChange();\n      };\n      _proto.componentDidUpdate = function componentDidUpdate() {\n        emitChange();\n      };\n      _proto.componentWillUnmount = function componentWillUnmount() {\n        var index = mountedInstances.indexOf(this);\n        mountedInstances.splice(index, 1);\n        emitChange();\n      };\n      _proto.render = function render() {\n        return React__default.createElement(WrappedComponent, this.props);\n      };\n      return SideEffect;\n    }(React.Component);\n    _defineProperty(SideEffect, \"displayName\", \"SideEffect(\" + getDisplayName(WrappedComponent) + \")\");\n    _defineProperty(SideEffect, \"canUseDOM\", canUseDOM);\n    return SideEffect;\n  };\n}\nmodule.exports = withSideEffect;","import React, { Component } from \"react\"\nimport { Link } from \"gatsby\"\nimport styles from \"./header.module.styl\"\nimport { event } from \"./event.js\"\n\nexport default props => (\n  <nav\n    id=\"nav\"\n    role=\"navigation\"\n    className={styles.nav + \" \" + (props.mode ? styles[props.mode] : \"\")}\n  >\n    <ul>\n      <li>\n        <Link\n          to=\"/projects\"\n          activeClassName={styles.active}\n          className=\"link--projects\"\n          partiallyActive={true}\n        >\n          Projects\n        </Link>\n      </li>\n      <li>\n        <Link\n          to=\"/profile/\"\n          activeClassName={styles.active}\n          className=\"link--about\"\n          partiallyActive={true}\n        >\n          Profile\n        </Link>\n      </li>\n      <li>\n        <Link\n          to=\"/contact/\"\n          activeClassName={styles.active}\n          className=\"link--contact\"\n          partiallyActive={true}\n        >\n          Contact\n        </Link>\n      </li>\n      <li className={styles.home}>\n        <Link to=\"/\" activeClassName={styles.activeHome} className=\"link--home\">\n          <img src=\"/home.png\" alt=\"HOme\" />\n        </Link>\n      </li>\n    </ul>\n  </nav>\n)\n","import React from \"react\"\nimport { Link } from \"gatsby\"\nimport styles from \"./footer.module.styl\"\n\nexport default props => (\n  <footer\n    className={styles.footer + \" \" + (props.mode ? styles[props.mode] : \"\")}\n  >\n    <Link to=\"/\">CYD © {new Date().getFullYear()} </Link>\n    <Link to=\"/\"> | </Link>\n    <a\n      target=\"_blank\"\n      href=\"https://beian.miit.gov.cn/\"\n      rel=\"noopener noreferrer\"\n    >\n      湘ICP备19024512号-1\n    </a>\n  </footer>\n)\n","import React from \"react\"\nimport Header from \"./header.js\"\nimport Footer from \"./footer.js\"\nimport styles from \"./layout.module.styl\"\n\nexport default ({ mode, children, page }) => (\n  <div className={styles.main + \" \" + (mode ? styles[mode] : \"\") + \" \" + page}>\n    <title>CYD | Homepage</title>\n    <Header mode={mode} />\n    {children}\n    <Footer mode={mode} />\n  </div>\n)\n","//\n\nmodule.exports = function shallowEqual(objA, objB, compare, compareContext) {\n  var ret = compare ? compare.call(compareContext, objA, objB) : void 0;\n  if (ret !== void 0) {\n    return !!ret;\n  }\n  if (objA === objB) {\n    return true;\n  }\n  if (typeof objA !== \"object\" || !objA || typeof objB !== \"object\" || !objB) {\n    return false;\n  }\n  var keysA = Object.keys(objA);\n  var keysB = Object.keys(objB);\n  if (keysA.length !== keysB.length) {\n    return false;\n  }\n  var bHasOwnProperty = Object.prototype.hasOwnProperty.bind(objB);\n\n  // Test for A's keys different from B.\n  for (var idx = 0; idx < keysA.length; idx++) {\n    var key = keysA[idx];\n    if (!bHasOwnProperty(key)) {\n      return false;\n    }\n    var valueA = objA[key];\n    var valueB = objB[key];\n    ret = compare ? compare.call(compareContext, valueA, valueB, key) : void 0;\n    if (ret === false || ret === void 0 && valueA !== valueB) {\n      return false;\n    }\n  }\n  return true;\n};","// extracted by mini-css-extract-plugin\nmodule.exports = {\"main\":\"layout-module--main--1lXwd\",\"mode_white\":\"layout-module--mode_white--3AC0C\",\"mode_black\":\"layout-module--mode_black--3BbSJ\"};","exports.__esModule = true;\nexports.Helmet = undefined;\nvar _extends = Object.assign || function (target) {\n  for (var i = 1; i < arguments.length; i++) {\n    var source = arguments[i];\n    for (var key in source) {\n      if (Object.prototype.hasOwnProperty.call(source, key)) {\n        target[key] = source[key];\n      }\n    }\n  }\n  return target;\n};\nvar _createClass = function () {\n  function defineProperties(target, props) {\n    for (var i = 0; i < props.length; i++) {\n      var descriptor = props[i];\n      descriptor.enumerable = descriptor.enumerable || false;\n      descriptor.configurable = true;\n      if (\"value\" in descriptor) descriptor.writable = true;\n      Object.defineProperty(target, descriptor.key, descriptor);\n    }\n  }\n  return function (Constructor, protoProps, staticProps) {\n    if (protoProps) defineProperties(Constructor.prototype, protoProps);\n    if (staticProps) defineProperties(Constructor, staticProps);\n    return Constructor;\n  };\n}();\nvar _react = require(\"react\");\nvar _react2 = _interopRequireDefault(_react);\nvar _propTypes = require(\"prop-types\");\nvar _propTypes2 = _interopRequireDefault(_propTypes);\nvar _reactSideEffect = require(\"react-side-effect\");\nvar _reactSideEffect2 = _interopRequireDefault(_reactSideEffect);\nvar _reactFastCompare = require(\"react-fast-compare\");\nvar _reactFastCompare2 = _interopRequireDefault(_reactFastCompare);\nvar _HelmetUtils = require(\"./HelmetUtils.js\");\nvar _HelmetConstants = require(\"./HelmetConstants.js\");\nfunction _interopRequireDefault(obj) {\n  return obj && obj.__esModule ? obj : {\n    default: obj\n  };\n}\nfunction _objectWithoutProperties(obj, keys) {\n  var target = {};\n  for (var i in obj) {\n    if (keys.indexOf(i) >= 0) continue;\n    if (!Object.prototype.hasOwnProperty.call(obj, i)) continue;\n    target[i] = obj[i];\n  }\n  return target;\n}\nfunction _classCallCheck(instance, Constructor) {\n  if (!(instance instanceof Constructor)) {\n    throw new TypeError(\"Cannot call a class as a function\");\n  }\n}\nfunction _possibleConstructorReturn(self, call) {\n  if (!self) {\n    throw new ReferenceError(\"this hasn't been initialised - super() hasn't been called\");\n  }\n  return call && (typeof call === \"object\" || typeof call === \"function\") ? call : self;\n}\nfunction _inherits(subClass, superClass) {\n  if (typeof superClass !== \"function\" && superClass !== null) {\n    throw new TypeError(\"Super expression must either be null or a function, not \" + typeof superClass);\n  }\n  subClass.prototype = Object.create(superClass && superClass.prototype, {\n    constructor: {\n      value: subClass,\n      enumerable: false,\n      writable: true,\n      configurable: true\n    }\n  });\n  if (superClass) Object.setPrototypeOf ? Object.setPrototypeOf(subClass, superClass) : subClass.__proto__ = superClass;\n}\nvar Helmet = function Helmet(Component) {\n  var _class, _temp;\n  return _temp = _class = function (_React$Component) {\n    _inherits(HelmetWrapper, _React$Component);\n    function HelmetWrapper() {\n      _classCallCheck(this, HelmetWrapper);\n      return _possibleConstructorReturn(this, _React$Component.apply(this, arguments));\n    }\n    HelmetWrapper.prototype.shouldComponentUpdate = function shouldComponentUpdate(nextProps) {\n      return !(0, _reactFastCompare2.default)(this.props, nextProps);\n    };\n    HelmetWrapper.prototype.mapNestedChildrenToProps = function mapNestedChildrenToProps(child, nestedChildren) {\n      if (!nestedChildren) {\n        return null;\n      }\n      switch (child.type) {\n        case _HelmetConstants.TAG_NAMES.SCRIPT:\n        case _HelmetConstants.TAG_NAMES.NOSCRIPT:\n          return {\n            innerHTML: nestedChildren\n          };\n        case _HelmetConstants.TAG_NAMES.STYLE:\n          return {\n            cssText: nestedChildren\n          };\n      }\n      throw new Error(\"<\" + child.type + \" /> elements are self-closing and can not contain children. Refer to our API for more information.\");\n    };\n    HelmetWrapper.prototype.flattenArrayTypeChildren = function flattenArrayTypeChildren(_ref) {\n      var _extends2;\n      var child = _ref.child,\n        arrayTypeChildren = _ref.arrayTypeChildren,\n        newChildProps = _ref.newChildProps,\n        nestedChildren = _ref.nestedChildren;\n      return _extends({}, arrayTypeChildren, (_extends2 = {}, _extends2[child.type] = [].concat(arrayTypeChildren[child.type] || [], [_extends({}, newChildProps, this.mapNestedChildrenToProps(child, nestedChildren))]), _extends2));\n    };\n    HelmetWrapper.prototype.mapObjectTypeChildren = function mapObjectTypeChildren(_ref2) {\n      var _extends3, _extends4;\n      var child = _ref2.child,\n        newProps = _ref2.newProps,\n        newChildProps = _ref2.newChildProps,\n        nestedChildren = _ref2.nestedChildren;\n      switch (child.type) {\n        case _HelmetConstants.TAG_NAMES.TITLE:\n          return _extends({}, newProps, (_extends3 = {}, _extends3[child.type] = nestedChildren, _extends3.titleAttributes = _extends({}, newChildProps), _extends3));\n        case _HelmetConstants.TAG_NAMES.BODY:\n          return _extends({}, newProps, {\n            bodyAttributes: _extends({}, newChildProps)\n          });\n        case _HelmetConstants.TAG_NAMES.HTML:\n          return _extends({}, newProps, {\n            htmlAttributes: _extends({}, newChildProps)\n          });\n      }\n      return _extends({}, newProps, (_extends4 = {}, _extends4[child.type] = _extends({}, newChildProps), _extends4));\n    };\n    HelmetWrapper.prototype.mapArrayTypeChildrenToProps = function mapArrayTypeChildrenToProps(arrayTypeChildren, newProps) {\n      var newFlattenedProps = _extends({}, newProps);\n      Object.keys(arrayTypeChildren).forEach(function (arrayChildName) {\n        var _extends5;\n        newFlattenedProps = _extends({}, newFlattenedProps, (_extends5 = {}, _extends5[arrayChildName] = arrayTypeChildren[arrayChildName], _extends5));\n      });\n      return newFlattenedProps;\n    };\n    HelmetWrapper.prototype.warnOnInvalidChildren = function warnOnInvalidChildren(child, nestedChildren) {\n      if (process.env.NODE_ENV !== \"production\") {\n        if (!_HelmetConstants.VALID_TAG_NAMES.some(function (name) {\n          return child.type === name;\n        })) {\n          if (typeof child.type === \"function\") {\n            return (0, _HelmetUtils.warn)(\"You may be attempting to nest <Helmet> components within each other, which is not allowed. Refer to our API for more information.\");\n          }\n          return (0, _HelmetUtils.warn)(\"Only elements types \" + _HelmetConstants.VALID_TAG_NAMES.join(\", \") + \" are allowed. Helmet does not support rendering <\" + child.type + \"> elements. Refer to our API for more information.\");\n        }\n        if (nestedChildren && typeof nestedChildren !== \"string\" && (!Array.isArray(nestedChildren) || nestedChildren.some(function (nestedChild) {\n          return typeof nestedChild !== \"string\";\n        }))) {\n          throw new Error(\"Helmet expects a string as a child of <\" + child.type + \">. Did you forget to wrap your children in braces? ( <\" + child.type + \">{``}</\" + child.type + \"> ) Refer to our API for more information.\");\n        }\n      }\n      return true;\n    };\n    HelmetWrapper.prototype.mapChildrenToProps = function mapChildrenToProps(children, newProps) {\n      var _this2 = this;\n      var arrayTypeChildren = {};\n      _react2.default.Children.forEach(children, function (child) {\n        if (!child || !child.props) {\n          return;\n        }\n        var _child$props = child.props,\n          nestedChildren = _child$props.children,\n          childProps = _objectWithoutProperties(_child$props, [\"children\"]);\n        var newChildProps = (0, _HelmetUtils.convertReactPropstoHtmlAttributes)(childProps);\n        _this2.warnOnInvalidChildren(child, nestedChildren);\n        switch (child.type) {\n          case _HelmetConstants.TAG_NAMES.LINK:\n          case _HelmetConstants.TAG_NAMES.META:\n          case _HelmetConstants.TAG_NAMES.NOSCRIPT:\n          case _HelmetConstants.TAG_NAMES.SCRIPT:\n          case _HelmetConstants.TAG_NAMES.STYLE:\n            arrayTypeChildren = _this2.flattenArrayTypeChildren({\n              child: child,\n              arrayTypeChildren: arrayTypeChildren,\n              newChildProps: newChildProps,\n              nestedChildren: nestedChildren\n            });\n            break;\n          default:\n            newProps = _this2.mapObjectTypeChildren({\n              child: child,\n              newProps: newProps,\n              newChildProps: newChildProps,\n              nestedChildren: nestedChildren\n            });\n            break;\n        }\n      });\n      newProps = this.mapArrayTypeChildrenToProps(arrayTypeChildren, newProps);\n      return newProps;\n    };\n    HelmetWrapper.prototype.render = function render() {\n      var _props = this.props,\n        children = _props.children,\n        props = _objectWithoutProperties(_props, [\"children\"]);\n      var newProps = _extends({}, props);\n      if (children) {\n        newProps = this.mapChildrenToProps(children, newProps);\n      }\n      return _react2.default.createElement(Component, newProps);\n    };\n    _createClass(HelmetWrapper, null, [{\n      key: \"canUseDOM\",\n      // Component.peek comes from react-side-effect:\n      // For testing, you may use a static peek() method available on the returned component.\n      // It lets you get the current state without resetting the mounted instance stack.\n      // Don’t use it for anything other than testing.\n\n      /**\n       * @param {Object} base: {\"target\": \"_blank\", \"href\": \"http://mysite.com/\"}\n       * @param {Object} bodyAttributes: {\"className\": \"root\"}\n       * @param {String} defaultTitle: \"Default Title\"\n       * @param {Boolean} defer: true\n       * @param {Boolean} encodeSpecialCharacters: true\n       * @param {Object} htmlAttributes: {\"lang\": \"en\", \"amp\": undefined}\n       * @param {Array} link: [{\"rel\": \"canonical\", \"href\": \"http://mysite.com/example\"}]\n       * @param {Array} meta: [{\"name\": \"description\", \"content\": \"Test description\"}]\n       * @param {Array} noscript: [{\"innerHTML\": \"<img src='http://mysite.com/js/test.js'\"}]\n       * @param {Function} onChangeClientState: \"(newState) => console.log(newState)\"\n       * @param {Array} script: [{\"type\": \"text/javascript\", \"src\": \"http://mysite.com/js/test.js\"}]\n       * @param {Array} style: [{\"type\": \"text/css\", \"cssText\": \"div { display: block; color: blue; }\"}]\n       * @param {String} title: \"Title\"\n       * @param {Object} titleAttributes: {\"itemprop\": \"name\"}\n       * @param {String} titleTemplate: \"MySite.com - %s\"\n       */\n      set: function set(canUseDOM) {\n        Component.canUseDOM = canUseDOM;\n      }\n    }]);\n    return HelmetWrapper;\n  }(_react2.default.Component), _class.propTypes = {\n    base: _propTypes2.default.object,\n    bodyAttributes: _propTypes2.default.object,\n    children: _propTypes2.default.oneOfType([_propTypes2.default.arrayOf(_propTypes2.default.node), _propTypes2.default.node]),\n    defaultTitle: _propTypes2.default.string,\n    defer: _propTypes2.default.bool,\n    encodeSpecialCharacters: _propTypes2.default.bool,\n    htmlAttributes: _propTypes2.default.object,\n    link: _propTypes2.default.arrayOf(_propTypes2.default.object),\n    meta: _propTypes2.default.arrayOf(_propTypes2.default.object),\n    noscript: _propTypes2.default.arrayOf(_propTypes2.default.object),\n    onChangeClientState: _propTypes2.default.func,\n    script: _propTypes2.default.arrayOf(_propTypes2.default.object),\n    style: _propTypes2.default.arrayOf(_propTypes2.default.object),\n    title: _propTypes2.default.string,\n    titleAttributes: _propTypes2.default.object,\n    titleTemplate: _propTypes2.default.string\n  }, _class.defaultProps = {\n    defer: true,\n    encodeSpecialCharacters: true\n  }, _class.peek = Component.peek, _class.rewind = function () {\n    var mappedState = Component.rewind();\n    if (!mappedState) {\n      // provide fallback if mappedState is undefined\n      mappedState = (0, _HelmetUtils.mapStateOnServer)({\n        baseTag: [],\n        bodyAttributes: {},\n        encodeSpecialCharacters: true,\n        htmlAttributes: {},\n        linkTags: [],\n        metaTags: [],\n        noscriptTags: [],\n        scriptTags: [],\n        styleTags: [],\n        title: \"\",\n        titleAttributes: {}\n      });\n    }\n    return mappedState;\n  }, _temp;\n};\nvar NullComponent = function NullComponent() {\n  return null;\n};\nvar HelmetSideEffects = (0, _reactSideEffect2.default)(_HelmetUtils.reducePropsToState, _HelmetUtils.handleClientStateChange, _HelmetUtils.mapStateOnServer)(NullComponent);\nvar HelmetExport = Helmet(HelmetSideEffects);\nHelmetExport.renderStatic = HelmetExport.rewind;\nexports.Helmet = HelmetExport;\nexports.default = HelmetExport;","'use strict';\n\nvar isArray = Array.isArray;\nvar keyList = Object.keys;\nvar hasProp = Object.prototype.hasOwnProperty;\nvar hasElementType = typeof Element !== 'undefined';\nfunction equal(a, b) {\n  // fast-deep-equal index.js 2.0.1\n  if (a === b) return true;\n  if (a && b && typeof a == 'object' && typeof b == 'object') {\n    var arrA = isArray(a),\n      arrB = isArray(b),\n      i,\n      length,\n      key;\n    if (arrA && arrB) {\n      length = a.length;\n      if (length != b.length) return false;\n      for (i = length; i-- !== 0;) if (!equal(a[i], b[i])) return false;\n      return true;\n    }\n    if (arrA != arrB) return false;\n    var dateA = a instanceof Date,\n      dateB = b instanceof Date;\n    if (dateA != dateB) return false;\n    if (dateA && dateB) return a.getTime() == b.getTime();\n    var regexpA = a instanceof RegExp,\n      regexpB = b instanceof RegExp;\n    if (regexpA != regexpB) return false;\n    if (regexpA && regexpB) return a.toString() == b.toString();\n    var keys = keyList(a);\n    length = keys.length;\n    if (length !== keyList(b).length) return false;\n    for (i = length; i-- !== 0;) if (!hasProp.call(b, keys[i])) return false;\n    // end fast-deep-equal\n\n    // start react-fast-compare\n    // custom handling for DOM elements\n    if (hasElementType && a instanceof Element && b instanceof Element) return a === b;\n\n    // custom handling for React\n    for (i = length; i-- !== 0;) {\n      key = keys[i];\n      if (key === '_owner' && a.$$typeof) {\n        // React-specific: avoid traversing React elements' _owner.\n        //  _owner contains circular references\n        // and is not needed when comparing the actual elements (and not their owners)\n        // .$$typeof and ._store on just reasonable markers of a react element\n        continue;\n      } else {\n        // all other properties should be traversed as usual\n        if (!equal(a[key], b[key])) return false;\n      }\n    }\n    // end react-fast-compare\n\n    // fast-deep-equal index.js 2.0.1\n    return true;\n  }\n  return a !== a && b !== b;\n}\n// end fast-deep-equal\n\nmodule.exports = function exportedEqual(a, b) {\n  try {\n    return equal(a, b);\n  } catch (error) {\n    if (error.message && error.message.match(/stack|recursion/i) || error.number === -2146828260) {\n      // warn on circular references, don't crash\n      // browsers give this different errors name and messages:\n      // chrome/safari: \"RangeError\", \"Maximum call stack size exceeded\"\n      // firefox: \"InternalError\", too much recursion\"\n      // edge: \"Error\", \"Out of stack space\"\n      console.warn('Warning: react-fast-compare does not handle circular references.', error.name, error.message);\n      return false;\n    }\n    // some other error. we should definitely know about these\n    throw error;\n  }\n};","// extracted by mini-css-extract-plugin\nmodule.exports = {\"footer\":\"footer-module--footer--2QbkM\",\"mode_white\":\"footer-module--mode_white--3rFAH\"};","exports.__esModule = true;\nvar ATTRIBUTE_NAMES = exports.ATTRIBUTE_NAMES = {\n  BODY: \"bodyAttributes\",\n  HTML: \"htmlAttributes\",\n  TITLE: \"titleAttributes\"\n};\nvar TAG_NAMES = exports.TAG_NAMES = {\n  BASE: \"base\",\n  BODY: \"body\",\n  HEAD: \"head\",\n  HTML: \"html\",\n  LINK: \"link\",\n  META: \"meta\",\n  NOSCRIPT: \"noscript\",\n  SCRIPT: \"script\",\n  STYLE: \"style\",\n  TITLE: \"title\"\n};\nvar VALID_TAG_NAMES = exports.VALID_TAG_NAMES = Object.keys(TAG_NAMES).map(function (name) {\n  return TAG_NAMES[name];\n});\nvar TAG_PROPERTIES = exports.TAG_PROPERTIES = {\n  CHARSET: \"charset\",\n  CSS_TEXT: \"cssText\",\n  HREF: \"href\",\n  HTTPEQUIV: \"http-equiv\",\n  INNER_HTML: \"innerHTML\",\n  ITEM_PROP: \"itemprop\",\n  NAME: \"name\",\n  PROPERTY: \"property\",\n  REL: \"rel\",\n  SRC: \"src\"\n};\nvar REACT_TAG_MAP = exports.REACT_TAG_MAP = {\n  accesskey: \"accessKey\",\n  charset: \"charSet\",\n  class: \"className\",\n  contenteditable: \"contentEditable\",\n  contextmenu: \"contextMenu\",\n  \"http-equiv\": \"httpEquiv\",\n  itemprop: \"itemProp\",\n  tabindex: \"tabIndex\"\n};\nvar HELMET_PROPS = exports.HELMET_PROPS = {\n  DEFAULT_TITLE: \"defaultTitle\",\n  DEFER: \"defer\",\n  ENCODE_SPECIAL_CHARACTERS: \"encodeSpecialCharacters\",\n  ON_CHANGE_CLIENT_STATE: \"onChangeClientState\",\n  TITLE_TEMPLATE: \"titleTemplate\"\n};\nvar HTML_TAG_MAP = exports.HTML_TAG_MAP = Object.keys(REACT_TAG_MAP).reduce(function (obj, key) {\n  obj[REACT_TAG_MAP[key]] = key;\n  return obj;\n}, {});\nvar SELF_CLOSING_TAGS = exports.SELF_CLOSING_TAGS = [TAG_NAMES.NOSCRIPT, TAG_NAMES.SCRIPT, TAG_NAMES.STYLE];\nvar HELMET_ATTRIBUTE = exports.HELMET_ATTRIBUTE = \"data-react-helmet\";","// extracted by mini-css-extract-plugin\nmodule.exports = {\"nav\":\"header-module--nav--1OL0J\",\"mode_black\":\"header-module--mode_black--1wZs2\",\"active\":\"header-module--active--26qFz\",\"home\":\"header-module--home--1xM24\",\"activeHome\":\"header-module--activeHome--2dB-h\"};","exports.__esModule = true;\nexports.warn = exports.requestAnimationFrame = exports.reducePropsToState = exports.mapStateOnServer = exports.handleClientStateChange = exports.convertReactPropstoHtmlAttributes = undefined;\nvar _typeof = typeof Symbol === \"function\" && typeof Symbol.iterator === \"symbol\" ? function (obj) {\n  return typeof obj;\n} : function (obj) {\n  return obj && typeof Symbol === \"function\" && obj.constructor === Symbol && obj !== Symbol.prototype ? \"symbol\" : typeof obj;\n};\nvar _extends = Object.assign || function (target) {\n  for (var i = 1; i < arguments.length; i++) {\n    var source = arguments[i];\n    for (var key in source) {\n      if (Object.prototype.hasOwnProperty.call(source, key)) {\n        target[key] = source[key];\n      }\n    }\n  }\n  return target;\n};\nvar _react = require(\"react\");\nvar _react2 = _interopRequireDefault(_react);\nvar _objectAssign = require(\"object-assign\");\nvar _objectAssign2 = _interopRequireDefault(_objectAssign);\nvar _HelmetConstants = require(\"./HelmetConstants.js\");\nfunction _interopRequireDefault(obj) {\n  return obj && obj.__esModule ? obj : {\n    default: obj\n  };\n}\nvar encodeSpecialCharacters = function encodeSpecialCharacters(str) {\n  var encode = arguments.length > 1 && arguments[1] !== undefined ? arguments[1] : true;\n  if (encode === false) {\n    return String(str);\n  }\n  return String(str).replace(/&/g, \"&amp;\").replace(/</g, \"&lt;\").replace(/>/g, \"&gt;\").replace(/\"/g, \"&quot;\").replace(/'/g, \"&#x27;\");\n};\nvar getTitleFromPropsList = function getTitleFromPropsList(propsList) {\n  var innermostTitle = getInnermostProperty(propsList, _HelmetConstants.TAG_NAMES.TITLE);\n  var innermostTemplate = getInnermostProperty(propsList, _HelmetConstants.HELMET_PROPS.TITLE_TEMPLATE);\n  if (innermostTemplate && innermostTitle) {\n    // use function arg to avoid need to escape $ characters\n    return innermostTemplate.replace(/%s/g, function () {\n      return innermostTitle;\n    });\n  }\n  var innermostDefaultTitle = getInnermostProperty(propsList, _HelmetConstants.HELMET_PROPS.DEFAULT_TITLE);\n  return innermostTitle || innermostDefaultTitle || undefined;\n};\nvar getOnChangeClientState = function getOnChangeClientState(propsList) {\n  return getInnermostProperty(propsList, _HelmetConstants.HELMET_PROPS.ON_CHANGE_CLIENT_STATE) || function () {};\n};\nvar getAttributesFromPropsList = function getAttributesFromPropsList(tagType, propsList) {\n  return propsList.filter(function (props) {\n    return typeof props[tagType] !== \"undefined\";\n  }).map(function (props) {\n    return props[tagType];\n  }).reduce(function (tagAttrs, current) {\n    return _extends({}, tagAttrs, current);\n  }, {});\n};\nvar getBaseTagFromPropsList = function getBaseTagFromPropsList(primaryAttributes, propsList) {\n  return propsList.filter(function (props) {\n    return typeof props[_HelmetConstants.TAG_NAMES.BASE] !== \"undefined\";\n  }).map(function (props) {\n    return props[_HelmetConstants.TAG_NAMES.BASE];\n  }).reverse().reduce(function (innermostBaseTag, tag) {\n    if (!innermostBaseTag.length) {\n      var keys = Object.keys(tag);\n      for (var i = 0; i < keys.length; i++) {\n        var attributeKey = keys[i];\n        var lowerCaseAttributeKey = attributeKey.toLowerCase();\n        if (primaryAttributes.indexOf(lowerCaseAttributeKey) !== -1 && tag[lowerCaseAttributeKey]) {\n          return innermostBaseTag.concat(tag);\n        }\n      }\n    }\n    return innermostBaseTag;\n  }, []);\n};\nvar getTagsFromPropsList = function getTagsFromPropsList(tagName, primaryAttributes, propsList) {\n  // Calculate list of tags, giving priority innermost component (end of the propslist)\n  var approvedSeenTags = {};\n  return propsList.filter(function (props) {\n    if (Array.isArray(props[tagName])) {\n      return true;\n    }\n    if (typeof props[tagName] !== \"undefined\") {\n      warn(\"Helmet: \" + tagName + \" should be of type \\\"Array\\\". Instead found type \\\"\" + _typeof(props[tagName]) + \"\\\"\");\n    }\n    return false;\n  }).map(function (props) {\n    return props[tagName];\n  }).reverse().reduce(function (approvedTags, instanceTags) {\n    var instanceSeenTags = {};\n    instanceTags.filter(function (tag) {\n      var primaryAttributeKey = void 0;\n      var keys = Object.keys(tag);\n      for (var i = 0; i < keys.length; i++) {\n        var attributeKey = keys[i];\n        var lowerCaseAttributeKey = attributeKey.toLowerCase();\n\n        // Special rule with link tags, since rel and href are both primary tags, rel takes priority\n        if (primaryAttributes.indexOf(lowerCaseAttributeKey) !== -1 && !(primaryAttributeKey === _HelmetConstants.TAG_PROPERTIES.REL && tag[primaryAttributeKey].toLowerCase() === \"canonical\") && !(lowerCaseAttributeKey === _HelmetConstants.TAG_PROPERTIES.REL && tag[lowerCaseAttributeKey].toLowerCase() === \"stylesheet\")) {\n          primaryAttributeKey = lowerCaseAttributeKey;\n        }\n        // Special case for innerHTML which doesn't work lowercased\n        if (primaryAttributes.indexOf(attributeKey) !== -1 && (attributeKey === _HelmetConstants.TAG_PROPERTIES.INNER_HTML || attributeKey === _HelmetConstants.TAG_PROPERTIES.CSS_TEXT || attributeKey === _HelmetConstants.TAG_PROPERTIES.ITEM_PROP)) {\n          primaryAttributeKey = attributeKey;\n        }\n      }\n      if (!primaryAttributeKey || !tag[primaryAttributeKey]) {\n        return false;\n      }\n      var value = tag[primaryAttributeKey].toLowerCase();\n      if (!approvedSeenTags[primaryAttributeKey]) {\n        approvedSeenTags[primaryAttributeKey] = {};\n      }\n      if (!instanceSeenTags[primaryAttributeKey]) {\n        instanceSeenTags[primaryAttributeKey] = {};\n      }\n      if (!approvedSeenTags[primaryAttributeKey][value]) {\n        instanceSeenTags[primaryAttributeKey][value] = true;\n        return true;\n      }\n      return false;\n    }).reverse().forEach(function (tag) {\n      return approvedTags.push(tag);\n    });\n\n    // Update seen tags with tags from this instance\n    var keys = Object.keys(instanceSeenTags);\n    for (var i = 0; i < keys.length; i++) {\n      var attributeKey = keys[i];\n      var tagUnion = (0, _objectAssign2.default)({}, approvedSeenTags[attributeKey], instanceSeenTags[attributeKey]);\n      approvedSeenTags[attributeKey] = tagUnion;\n    }\n    return approvedTags;\n  }, []).reverse();\n};\nvar getInnermostProperty = function getInnermostProperty(propsList, property) {\n  for (var i = propsList.length - 1; i >= 0; i--) {\n    var props = propsList[i];\n    if (props.hasOwnProperty(property)) {\n      return props[property];\n    }\n  }\n  return null;\n};\nvar reducePropsToState = function reducePropsToState(propsList) {\n  return {\n    baseTag: getBaseTagFromPropsList([_HelmetConstants.TAG_PROPERTIES.HREF], propsList),\n    bodyAttributes: getAttributesFromPropsList(_HelmetConstants.ATTRIBUTE_NAMES.BODY, propsList),\n    defer: getInnermostProperty(propsList, _HelmetConstants.HELMET_PROPS.DEFER),\n    encode: getInnermostProperty(propsList, _HelmetConstants.HELMET_PROPS.ENCODE_SPECIAL_CHARACTERS),\n    htmlAttributes: getAttributesFromPropsList(_HelmetConstants.ATTRIBUTE_NAMES.HTML, propsList),\n    linkTags: getTagsFromPropsList(_HelmetConstants.TAG_NAMES.LINK, [_HelmetConstants.TAG_PROPERTIES.REL, _HelmetConstants.TAG_PROPERTIES.HREF], propsList),\n    metaTags: getTagsFromPropsList(_HelmetConstants.TAG_NAMES.META, [_HelmetConstants.TAG_PROPERTIES.NAME, _HelmetConstants.TAG_PROPERTIES.CHARSET, _HelmetConstants.TAG_PROPERTIES.HTTPEQUIV, _HelmetConstants.TAG_PROPERTIES.PROPERTY, _HelmetConstants.TAG_PROPERTIES.ITEM_PROP], propsList),\n    noscriptTags: getTagsFromPropsList(_HelmetConstants.TAG_NAMES.NOSCRIPT, [_HelmetConstants.TAG_PROPERTIES.INNER_HTML], propsList),\n    onChangeClientState: getOnChangeClientState(propsList),\n    scriptTags: getTagsFromPropsList(_HelmetConstants.TAG_NAMES.SCRIPT, [_HelmetConstants.TAG_PROPERTIES.SRC, _HelmetConstants.TAG_PROPERTIES.INNER_HTML], propsList),\n    styleTags: getTagsFromPropsList(_HelmetConstants.TAG_NAMES.STYLE, [_HelmetConstants.TAG_PROPERTIES.CSS_TEXT], propsList),\n    title: getTitleFromPropsList(propsList),\n    titleAttributes: getAttributesFromPropsList(_HelmetConstants.ATTRIBUTE_NAMES.TITLE, propsList)\n  };\n};\nvar rafPolyfill = function () {\n  var clock = Date.now();\n  return function (callback) {\n    var currentTime = Date.now();\n    if (currentTime - clock > 16) {\n      clock = currentTime;\n      callback(currentTime);\n    } else {\n      setTimeout(function () {\n        rafPolyfill(callback);\n      }, 0);\n    }\n  };\n}();\nvar cafPolyfill = function cafPolyfill(id) {\n  return clearTimeout(id);\n};\nvar requestAnimationFrame = typeof window !== \"undefined\" ? window.requestAnimationFrame || window.webkitRequestAnimationFrame || window.mozRequestAnimationFrame || rafPolyfill : global.requestAnimationFrame || rafPolyfill;\nvar cancelAnimationFrame = typeof window !== \"undefined\" ? window.cancelAnimationFrame || window.webkitCancelAnimationFrame || window.mozCancelAnimationFrame || cafPolyfill : global.cancelAnimationFrame || cafPolyfill;\nvar warn = function warn(msg) {\n  return console && typeof console.warn === \"function\" && console.warn(msg);\n};\nvar _helmetCallback = null;\nvar handleClientStateChange = function handleClientStateChange(newState) {\n  if (_helmetCallback) {\n    cancelAnimationFrame(_helmetCallback);\n  }\n  if (newState.defer) {\n    _helmetCallback = requestAnimationFrame(function () {\n      commitTagChanges(newState, function () {\n        _helmetCallback = null;\n      });\n    });\n  } else {\n    commitTagChanges(newState);\n    _helmetCallback = null;\n  }\n};\nvar commitTagChanges = function commitTagChanges(newState, cb) {\n  var baseTag = newState.baseTag,\n    bodyAttributes = newState.bodyAttributes,\n    htmlAttributes = newState.htmlAttributes,\n    linkTags = newState.linkTags,\n    metaTags = newState.metaTags,\n    noscriptTags = newState.noscriptTags,\n    onChangeClientState = newState.onChangeClientState,\n    scriptTags = newState.scriptTags,\n    styleTags = newState.styleTags,\n    title = newState.title,\n    titleAttributes = newState.titleAttributes;\n  updateAttributes(_HelmetConstants.TAG_NAMES.BODY, bodyAttributes);\n  updateAttributes(_HelmetConstants.TAG_NAMES.HTML, htmlAttributes);\n  updateTitle(title, titleAttributes);\n  var tagUpdates = {\n    baseTag: updateTags(_HelmetConstants.TAG_NAMES.BASE, baseTag),\n    linkTags: updateTags(_HelmetConstants.TAG_NAMES.LINK, linkTags),\n    metaTags: updateTags(_HelmetConstants.TAG_NAMES.META, metaTags),\n    noscriptTags: updateTags(_HelmetConstants.TAG_NAMES.NOSCRIPT, noscriptTags),\n    scriptTags: updateTags(_HelmetConstants.TAG_NAMES.SCRIPT, scriptTags),\n    styleTags: updateTags(_HelmetConstants.TAG_NAMES.STYLE, styleTags)\n  };\n  var addedTags = {};\n  var removedTags = {};\n  Object.keys(tagUpdates).forEach(function (tagType) {\n    var _tagUpdates$tagType = tagUpdates[tagType],\n      newTags = _tagUpdates$tagType.newTags,\n      oldTags = _tagUpdates$tagType.oldTags;\n    if (newTags.length) {\n      addedTags[tagType] = newTags;\n    }\n    if (oldTags.length) {\n      removedTags[tagType] = tagUpdates[tagType].oldTags;\n    }\n  });\n  cb && cb();\n  onChangeClientState(newState, addedTags, removedTags);\n};\nvar flattenArray = function flattenArray(possibleArray) {\n  return Array.isArray(possibleArray) ? possibleArray.join(\"\") : possibleArray;\n};\nvar updateTitle = function updateTitle(title, attributes) {\n  if (typeof title !== \"undefined\" && document.title !== title) {\n    document.title = flattenArray(title);\n  }\n  updateAttributes(_HelmetConstants.TAG_NAMES.TITLE, attributes);\n};\nvar updateAttributes = function updateAttributes(tagName, attributes) {\n  var elementTag = document.getElementsByTagName(tagName)[0];\n  if (!elementTag) {\n    return;\n  }\n  var helmetAttributeString = elementTag.getAttribute(_HelmetConstants.HELMET_ATTRIBUTE);\n  var helmetAttributes = helmetAttributeString ? helmetAttributeString.split(\",\") : [];\n  var attributesToRemove = [].concat(helmetAttributes);\n  var attributeKeys = Object.keys(attributes);\n  for (var i = 0; i < attributeKeys.length; i++) {\n    var attribute = attributeKeys[i];\n    var value = attributes[attribute] || \"\";\n    if (elementTag.getAttribute(attribute) !== value) {\n      elementTag.setAttribute(attribute, value);\n    }\n    if (helmetAttributes.indexOf(attribute) === -1) {\n      helmetAttributes.push(attribute);\n    }\n    var indexToSave = attributesToRemove.indexOf(attribute);\n    if (indexToSave !== -1) {\n      attributesToRemove.splice(indexToSave, 1);\n    }\n  }\n  for (var _i = attributesToRemove.length - 1; _i >= 0; _i--) {\n    elementTag.removeAttribute(attributesToRemove[_i]);\n  }\n  if (helmetAttributes.length === attributesToRemove.length) {\n    elementTag.removeAttribute(_HelmetConstants.HELMET_ATTRIBUTE);\n  } else if (elementTag.getAttribute(_HelmetConstants.HELMET_ATTRIBUTE) !== attributeKeys.join(\",\")) {\n    elementTag.setAttribute(_HelmetConstants.HELMET_ATTRIBUTE, attributeKeys.join(\",\"));\n  }\n};\nvar updateTags = function updateTags(type, tags) {\n  var headElement = document.head || document.querySelector(_HelmetConstants.TAG_NAMES.HEAD);\n  var tagNodes = headElement.querySelectorAll(type + \"[\" + _HelmetConstants.HELMET_ATTRIBUTE + \"]\");\n  var oldTags = Array.prototype.slice.call(tagNodes);\n  var newTags = [];\n  var indexToDelete = void 0;\n  if (tags && tags.length) {\n    tags.forEach(function (tag) {\n      var newElement = document.createElement(type);\n      for (var attribute in tag) {\n        if (tag.hasOwnProperty(attribute)) {\n          if (attribute === _HelmetConstants.TAG_PROPERTIES.INNER_HTML) {\n            newElement.innerHTML = tag.innerHTML;\n          } else if (attribute === _HelmetConstants.TAG_PROPERTIES.CSS_TEXT) {\n            if (newElement.styleSheet) {\n              newElement.styleSheet.cssText = tag.cssText;\n            } else {\n              newElement.appendChild(document.createTextNode(tag.cssText));\n            }\n          } else {\n            var value = typeof tag[attribute] === \"undefined\" ? \"\" : tag[attribute];\n            newElement.setAttribute(attribute, value);\n          }\n        }\n      }\n      newElement.setAttribute(_HelmetConstants.HELMET_ATTRIBUTE, \"true\");\n\n      // Remove a duplicate tag from domTagstoRemove, so it isn't cleared.\n      if (oldTags.some(function (existingTag, index) {\n        indexToDelete = index;\n        return newElement.isEqualNode(existingTag);\n      })) {\n        oldTags.splice(indexToDelete, 1);\n      } else {\n        newTags.push(newElement);\n      }\n    });\n  }\n  oldTags.forEach(function (tag) {\n    return tag.parentNode.removeChild(tag);\n  });\n  newTags.forEach(function (tag) {\n    return headElement.appendChild(tag);\n  });\n  return {\n    oldTags: oldTags,\n    newTags: newTags\n  };\n};\nvar generateElementAttributesAsString = function generateElementAttributesAsString(attributes) {\n  return Object.keys(attributes).reduce(function (str, key) {\n    var attr = typeof attributes[key] !== \"undefined\" ? key + \"=\\\"\" + attributes[key] + \"\\\"\" : \"\" + key;\n    return str ? str + \" \" + attr : attr;\n  }, \"\");\n};\nvar generateTitleAsString = function generateTitleAsString(type, title, attributes, encode) {\n  var attributeString = generateElementAttributesAsString(attributes);\n  var flattenedTitle = flattenArray(title);\n  return attributeString ? \"<\" + type + \" \" + _HelmetConstants.HELMET_ATTRIBUTE + \"=\\\"true\\\" \" + attributeString + \">\" + encodeSpecialCharacters(flattenedTitle, encode) + \"</\" + type + \">\" : \"<\" + type + \" \" + _HelmetConstants.HELMET_ATTRIBUTE + \"=\\\"true\\\">\" + encodeSpecialCharacters(flattenedTitle, encode) + \"</\" + type + \">\";\n};\nvar generateTagsAsString = function generateTagsAsString(type, tags, encode) {\n  return tags.reduce(function (str, tag) {\n    var attributeHtml = Object.keys(tag).filter(function (attribute) {\n      return !(attribute === _HelmetConstants.TAG_PROPERTIES.INNER_HTML || attribute === _HelmetConstants.TAG_PROPERTIES.CSS_TEXT);\n    }).reduce(function (string, attribute) {\n      var attr = typeof tag[attribute] === \"undefined\" ? attribute : attribute + \"=\\\"\" + encodeSpecialCharacters(tag[attribute], encode) + \"\\\"\";\n      return string ? string + \" \" + attr : attr;\n    }, \"\");\n    var tagContent = tag.innerHTML || tag.cssText || \"\";\n    var isSelfClosing = _HelmetConstants.SELF_CLOSING_TAGS.indexOf(type) === -1;\n    return str + \"<\" + type + \" \" + _HelmetConstants.HELMET_ATTRIBUTE + \"=\\\"true\\\" \" + attributeHtml + (isSelfClosing ? \"/>\" : \">\" + tagContent + \"</\" + type + \">\");\n  }, \"\");\n};\nvar convertElementAttributestoReactProps = function convertElementAttributestoReactProps(attributes) {\n  var initProps = arguments.length > 1 && arguments[1] !== undefined ? arguments[1] : {};\n  return Object.keys(attributes).reduce(function (obj, key) {\n    obj[_HelmetConstants.REACT_TAG_MAP[key] || key] = attributes[key];\n    return obj;\n  }, initProps);\n};\nvar convertReactPropstoHtmlAttributes = function convertReactPropstoHtmlAttributes(props) {\n  var initAttributes = arguments.length > 1 && arguments[1] !== undefined ? arguments[1] : {};\n  return Object.keys(props).reduce(function (obj, key) {\n    obj[_HelmetConstants.HTML_TAG_MAP[key] || key] = props[key];\n    return obj;\n  }, initAttributes);\n};\nvar generateTitleAsReactComponent = function generateTitleAsReactComponent(type, title, attributes) {\n  var _initProps;\n\n  // assigning into an array to define toString function on it\n  var initProps = (_initProps = {\n    key: title\n  }, _initProps[_HelmetConstants.HELMET_ATTRIBUTE] = true, _initProps);\n  var props = convertElementAttributestoReactProps(attributes, initProps);\n  return [_react2.default.createElement(_HelmetConstants.TAG_NAMES.TITLE, props, title)];\n};\nvar generateTagsAsReactComponent = function generateTagsAsReactComponent(type, tags) {\n  return tags.map(function (tag, i) {\n    var _mappedTag;\n    var mappedTag = (_mappedTag = {\n      key: i\n    }, _mappedTag[_HelmetConstants.HELMET_ATTRIBUTE] = true, _mappedTag);\n    Object.keys(tag).forEach(function (attribute) {\n      var mappedAttribute = _HelmetConstants.REACT_TAG_MAP[attribute] || attribute;\n      if (mappedAttribute === _HelmetConstants.TAG_PROPERTIES.INNER_HTML || mappedAttribute === _HelmetConstants.TAG_PROPERTIES.CSS_TEXT) {\n        var content = tag.innerHTML || tag.cssText;\n        mappedTag.dangerouslySetInnerHTML = {\n          __html: content\n        };\n      } else {\n        mappedTag[mappedAttribute] = tag[attribute];\n      }\n    });\n    return _react2.default.createElement(type, mappedTag);\n  });\n};\nvar getMethodsForTag = function getMethodsForTag(type, tags, encode) {\n  switch (type) {\n    case _HelmetConstants.TAG_NAMES.TITLE:\n      return {\n        toComponent: function toComponent() {\n          return generateTitleAsReactComponent(type, tags.title, tags.titleAttributes, encode);\n        },\n        toString: function toString() {\n          return generateTitleAsString(type, tags.title, tags.titleAttributes, encode);\n        }\n      };\n    case _HelmetConstants.ATTRIBUTE_NAMES.BODY:\n    case _HelmetConstants.ATTRIBUTE_NAMES.HTML:\n      return {\n        toComponent: function toComponent() {\n          return convertElementAttributestoReactProps(tags);\n        },\n        toString: function toString() {\n          return generateElementAttributesAsString(tags);\n        }\n      };\n    default:\n      return {\n        toComponent: function toComponent() {\n          return generateTagsAsReactComponent(type, tags);\n        },\n        toString: function toString() {\n          return generateTagsAsString(type, tags, encode);\n        }\n      };\n  }\n};\nvar mapStateOnServer = function mapStateOnServer(_ref) {\n  var baseTag = _ref.baseTag,\n    bodyAttributes = _ref.bodyAttributes,\n    encode = _ref.encode,\n    htmlAttributes = _ref.htmlAttributes,\n    linkTags = _ref.linkTags,\n    metaTags = _ref.metaTags,\n    noscriptTags = _ref.noscriptTags,\n    scriptTags = _ref.scriptTags,\n    styleTags = _ref.styleTags,\n    _ref$title = _ref.title,\n    title = _ref$title === undefined ? \"\" : _ref$title,\n    titleAttributes = _ref.titleAttributes;\n  return {\n    base: getMethodsForTag(_HelmetConstants.TAG_NAMES.BASE, baseTag, encode),\n    bodyAttributes: getMethodsForTag(_HelmetConstants.ATTRIBUTE_NAMES.BODY, bodyAttributes, encode),\n    htmlAttributes: getMethodsForTag(_HelmetConstants.ATTRIBUTE_NAMES.HTML, htmlAttributes, encode),\n    link: getMethodsForTag(_HelmetConstants.TAG_NAMES.LINK, linkTags, encode),\n    meta: getMethodsForTag(_HelmetConstants.TAG_NAMES.META, metaTags, encode),\n    noscript: getMethodsForTag(_HelmetConstants.TAG_NAMES.NOSCRIPT, noscriptTags, encode),\n    script: getMethodsForTag(_HelmetConstants.TAG_NAMES.SCRIPT, scriptTags, encode),\n    style: getMethodsForTag(_HelmetConstants.TAG_NAMES.STYLE, styleTags, encode),\n    title: getMethodsForTag(_HelmetConstants.TAG_NAMES.TITLE, {\n      title: title,\n      titleAttributes: titleAttributes\n    }, encode)\n  };\n};\nexports.convertReactPropstoHtmlAttributes = convertReactPropstoHtmlAttributes;\nexports.handleClientStateChange = handleClientStateChange;\nexports.mapStateOnServer = mapStateOnServer;\nexports.reducePropsToState = reducePropsToState;\nexports.requestAnimationFrame = requestAnimationFrame;\nexports.warn = warn;","import React from \"react\"\nimport { Helmet } from \"react-helmet\"\nimport PropTypes from \"prop-types\"\nimport { StaticQuery, graphql } from \"gatsby\"\n\nconst SEO = ({ title, description, image, pathname, article }) => (\n  <StaticQuery\n    query={query}\n    render={({\n      site: {\n        siteMetadata: {\n          defaultTitle,\n          titleTemplate,\n          defaultDescription,\n          siteUrl,\n          defaultImage,\n        },\n      },\n    }) => {\n      const seo = {\n        title: title || defaultTitle,\n        description: description || defaultDescription,\n        image: `${siteUrl}${image || defaultImage}`,\n        url: `${siteUrl}${pathname || \"/\"}`,\n      }\n      return (\n        <>\n          <Helmet title={seo.title} titleTemplate={titleTemplate}>\n            <meta name=\"description\" content={seo.description} />\n            <meta name=\"image\" content={seo.image} />\n            {seo.url && <meta property=\"og:url\" content={seo.url} />}\n            {(article ? true : null) && (\n              <meta property=\"og:type\" content=\"article\" />\n            )}\n            {seo.title && <meta property=\"og:title\" content={seo.title} />}\n            {seo.description && (\n              <meta property=\"og:description\" content={seo.description} />\n            )}\n            {seo.image && <meta property=\"og:image\" content={seo.image} />}\n          </Helmet>\n        </>\n      )\n    }}\n  />\n)\n\nexport default SEO\n\nSEO.propTypes = {\n  title: PropTypes.string,\n  description: PropTypes.string,\n  image: PropTypes.string,\n  pathname: PropTypes.string,\n  article: PropTypes.bool,\n}\n\nSEO.defaultProps = {\n  title: null,\n  description: null,\n  image: null,\n  pathname: null,\n  article: false,\n}\n\nconst query = graphql`\n  query SEO {\n    site {\n      siteMetadata {\n        defaultTitle: title\n        titleTemplate\n        defaultDescription: description\n        siteUrl\n        defaultImage: image\n      }\n    }\n  }\n`\n","// 发布订阅类\nclass EventEmitter {\n  _event = {}\n\n  // on 函数用于绑定\n  on(eventName, handle) {\n    let listeners = this._event[eventName];\n    if(!listeners || !listeners.length) {\n      this._event[eventName] = [handle];\n      return;\n    }\n    listeners.push(handle);\n  }\n  // off 用于移除\n  off(eventName, handle) {\n    let listeners = this._event[eventName];\n    this._event[eventName] = listeners.filter(l => l !== handle);\n  }\n  // emit 用于分发消息\n  emit(eventName, ...args) {\n    const listeners = this._event[eventName];\n    if(listeners && listeners.length) {\n      for(const l of listeners) {\n        l(...args);\n      }\n    }\n  }\n}\nconst event = new EventEmitter();\nexport { event };\n","var g;\n\n// This works in non-strict mode\ng = (function() {\n\treturn this;\n})();\n\ntry {\n\t// This works if eval is allowed (see CSP)\n\tg = g || new Function(\"return this\")();\n} catch (e) {\n\t// This works if the window reference is available\n\tif (typeof window === \"object\") g = window;\n}\n\n// g can still be undefined, but nothing to do about it...\n// We return undefined, instead of nothing here, so it's\n// easier to handle this case. if(!global) { ...}\n\nmodule.exports = g;\n"],"sourceRoot":""}