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Object.setPrototypeOf(subClass, superClass) : subClass.__proto__ = superClass; }\n\nvar LARGE_VIEWPORT = 1200;\n\nvar BackToTop = function (_Component) {\n  _inherits(BackToTop, _Component);\n\n  function BackToTop(el, config) {\n    _classCallCheck(this, BackToTop);\n\n    var _this = _possibleConstructorReturn(this, (BackToTop.__proto__ || Object.getPrototypeOf(BackToTop)).call(this, el, config));\n\n    _this.onWindowScroll();\n    return _this;\n  }\n\n  _createClass(BackToTop, [{\n    key: 'addListeners',\n    value: function addListeners() {\n      $(window).on('scroll', this.onWindowScroll.bind(this));\n      $(document).on('click', '.wh-back-to-top__button', this.onButtonClick.bind(this));\n    }\n  }, {\n    key: 'onButtonClick',\n    value: function onButtonClick() {\n      window.scrollTo({ top: 0, behavior: 'smooth' });\n    }\n  }, {\n    key: 'onWindowScroll',\n    value: function onWindowScroll() {\n      var scrollTop = $(window).scrollTop();\n      var threshold = 500;\n      var $footer = $('.wh-footer');\n      var footerHeight = $footer.height();\n\n      if (scrollTop < threshold) {\n        this.$el.css('opacity', '0');\n        this.$el.css('visibility', 'hidden');\n        this.$el.css('transform', 'translateY(150px)');\n      } else {\n        this.$el.css('opacity', '1');\n        this.$el.css('visibility', 'visible');\n        this.$el.css('transform', '');\n      }\n\n      if (scrollTop + $(window).height() > $(document).height() - footerHeight) {\n        this.$el.css('bottom', footerHeight + 20 + 'px');\n      } else {\n        if ($(document).width() < LARGE_VIEWPORT) {\n          this.$el.css('bottom', 20 + 'px');\n        } else {\n          this.$el.css('bottom', 40 + 'px');\n        }\n      }\n    }\n  }]);\n\n  return BackToTop;\n}(_component2.default);\n\nexports.default = BackToTop;\n/* WEBPACK VAR INJECTION */}.call(exports, __webpack_require__(10)))\n\n/***/ })\n\n});\n\n\n// WEBPACK FOOTER //\n// 39.ee81dfcc.bundle.js","import Component from 'component';\n\nconst LARGE_VIEWPORT = 1200;\n\nclass BackToTop extends Component{\n  constructor(el, config){\n    super(el, config);\n    this.onWindowScroll();\n  }\n\n  addListeners(){\n    $(window).on('scroll', ::this.onWindowScroll);\n    $(document).on('click', '.wh-back-to-top__button', ::this.onButtonClick);\n  }\n\n  onButtonClick() {\n    window.scrollTo({ top: 0, behavior: 'smooth' });\n  }\n\n  onWindowScroll() {\n    const scrollTop = $(window).scrollTop();\n    const threshold = 500;\n    const $footer = $('.wh-footer');\n    const footerHeight = $footer.height();\n\n    if (scrollTop < threshold) {\n      this.$el.css('opacity', '0');\n      this.$el.css('visibility', 'hidden');\n      this.$el.css('transform', 'translateY(150px)');\n    } else {\n      this.$el.css('opacity', '1');\n      this.$el.css('visibility', 'visible');\n      this.$el.css('transform', '');\n    }\n\n    if (scrollTop + $(window).height() > $(document).height() - footerHeight) {\n      this.$el.css('bottom', (footerHeight + 20) + 'px');\n    } else {\n      if ($(document).width() < LARGE_VIEWPORT) {\n        this.$el.css('bottom', 20 + 'px');\n      } else {\n        this.$el.css('bottom', 40 + 'px');\n      }\n    }\n  }\n}\n\nexport default BackToTop;\n\n\n\n// WEBPACK FOOTER //\n// ./src/js/components/global/BackToTop.js"],"sourceRoot":""}