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class:ETI"ProcessedAsset; FI"logical_path; TI"turbolinks.js; FI"pathname; TI"}/Users/anton/.rbenv/versions/2.1.3/lib/ruby/gems/2.1.0/gems/turbolinks-2.5.1/lib/assets/javascripts/turbolinks.js.coffee; FI"content_type; TI"application/javascript; TI"
mtime; Tl+"2ØTI"length; TiöjI"digest; TI"%2d50635763fbf902eae7350e8201dfdf; FI"source; TI"öj(function() {
  var CSRFToken, Click, ComponentUrl, EVENTS, Link, ProgressBar, browserCompatibleDocumentParser, browserIsntBuggy, browserSupportsCustomEvents, browserSupportsPushState, browserSupportsTurbolinks, bypassOnLoadPopstate, cacheCurrentPage, cacheSize, changePage, clone, constrainPageCacheTo, createDocument, crossOriginRedirect, currentState, enableProgressBar, enableTransitionCache, executeScriptTags, extractTitleAndBody, fetch, fetchHistory, fetchReplacement, historyStateIsDefined, initializeTurbolinks, installDocumentReadyPageEventTriggers, installHistoryChangeHandler, installJqueryAjaxSuccessPageUpdateTrigger, loadedAssets, manuallyTriggerHashChangeForFirefox, pageCache, pageChangePrevented, pagesCached, popCookie, processResponse, progressBar, recallScrollPosition, referer, reflectNewUrl, reflectRedirectedUrl, rememberCurrentState, rememberCurrentUrl, rememberReferer, removeNoscriptTags, requestMethodIsSafe, resetScrollPosition, setAutofocusElement, transitionCacheEnabled, transitionCacheFor, triggerEvent, visit, xhr, _ref,
    __indexOf = [].indexOf || function(item) { for (var i = 0, l = this.length; i < l; i++) { if (i in this && this[i] === item) return i; } return -1; },
    __hasProp = {}.hasOwnProperty,
    __extends = function(child, parent) { for (var key in parent) { if (__hasProp.call(parent, key)) child[key] = parent[key]; } function ctor() { this.constructor = child; } ctor.prototype = parent.prototype; child.prototype = new ctor(); child.__super__ = parent.prototype; return child; },
    __slice = [].slice,
    __bind = function(fn, me){ return function(){ return fn.apply(me, arguments); }; };

  pageCache = {};

  cacheSize = 10;

  transitionCacheEnabled = false;

  progressBar = null;

  currentState = null;

  loadedAssets = null;

  referer = null;

  createDocument = null;

  xhr = null;

  EVENTS = {
    BEFORE_CHANGE: 'page:before-change',
    FETCH: 'page:fetch',
    RECEIVE: 'page:receive',
    CHANGE: 'page:change',
    UPDATE: 'page:update',
    LOAD: 'page:load',
    RESTORE: 'page:restore',
    BEFORE_UNLOAD: 'page:before-unload',
    EXPIRE: 'page:expire'
  };

  fetch = function(url) {
    var cachedPage;
    url = new ComponentUrl(url);
    rememberReferer();
    cacheCurrentPage();
    if (progressBar != null) {
      progressBar.start();
    }
    if (transitionCacheEnabled && (cachedPage = transitionCacheFor(url.absolute))) {
      fetchHistory(cachedPage);
      return fetchReplacement(url, null, false);
    } else {
      return fetchReplacement(url, resetScrollPosition);
    }
  };

  transitionCacheFor = function(url) {
    var cachedPage;
    cachedPage = pageCache[url];
    if (cachedPage && !cachedPage.transitionCacheDisabled) {
      return cachedPage;
    }
  };

  enableTransitionCache = function(enable) {
    if (enable == null) {
      enable = true;
    }
    return transitionCacheEnabled = enable;
  };

  enableProgressBar = function(enable) {
    if (enable == null) {
      enable = true;
    }
    if (enable) {
      return progressBar != null ? progressBar : progressBar = new ProgressBar('html');
    } else {
      if (progressBar != null) {
        progressBar.uninstall();
      }
      return progressBar = null;
    }
  };

  fetchReplacement = function(url, onLoadFunction, showProgressBar) {
    if (showProgressBar == null) {
      showProgressBar = true;
    }
    triggerEvent(EVENTS.FETCH, {
      url: url.absolute
    });
    if (xhr != null) {
      xhr.abort();
    }
    xhr = new XMLHttpRequest;
    xhr.open('GET', url.withoutHashForIE10compatibility(), true);
    xhr.setRequestHeader('Accept', 'text/html, application/xhtml+xml, application/xml');
    xhr.setRequestHeader('X-XHR-Referer', referer);
    xhr.onload = function() {
      var doc;
      triggerEvent(EVENTS.RECEIVE, {
        url: url.absolute
      });
      if (doc = processResponse()) {
        reflectNewUrl(url);
        reflectRedirectedUrl();
        changePage.apply(null, extractTitleAndBody(doc));
        manuallyTriggerHashChangeForFirefox();
        if (typeof onLoadFunction === "function") {
          onLoadFunction();
        }
        return triggerEvent(EVENTS.LOAD);
      } else {
        return document.location.href = crossOriginRedirect() || url.absolute;
      }
    };
    if (progressBar && showProgressBar) {
      xhr.onprogress = (function(_this) {
        return function(event) {
          var percent;
          percent = event.lengthComputable ? event.loaded / event.total * 100 : progressBar.value + (100 - progressBar.value) / 10;
          return progressBar.advanceTo(percent);
        };
      })(this);
    }
    xhr.onloadend = function() {
      return xhr = null;
    };
    xhr.onerror = function() {
      return document.location.href = url.absolute;
    };
    return xhr.send();
  };

  fetchHistory = function(cachedPage) {
    if (xhr != null) {
      xhr.abort();
    }
    changePage(cachedPage.title, cachedPage.body);
    recallScrollPosition(cachedPage);
    return triggerEvent(EVENTS.RESTORE);
  };

  cacheCurrentPage = function() {
    var currentStateUrl;
    currentStateUrl = new ComponentUrl(currentState.url);
    pageCache[currentStateUrl.absolute] = {
      url: currentStateUrl.relative,
      body: document.body,
      title: document.title,
      positionY: window.pageYOffset,
      positionX: window.pageXOffset,
      cachedAt: new Date().getTime(),
      transitionCacheDisabled: document.querySelector('[data-no-transition-cache]') != null
    };
    return constrainPageCacheTo(cacheSize);
  };

  pagesCached = function(size) {
    if (size == null) {
      size = cacheSize;
    }
    if (/^[\d]+$/.test(size)) {
      return cacheSize = parseInt(size);
    }
  };

  constrainPageCacheTo = function(limit) {
    var cacheTimesRecentFirst, key, pageCacheKeys, _i, _len, _results;
    pageCacheKeys = Object.keys(pageCache);
    cacheTimesRecentFirst = pageCacheKeys.map(function(url) {
      return pageCache[url].cachedAt;
    }).sort(function(a, b) {
      return b - a;
    });
    _results = [];
    for (_i = 0, _len = pageCacheKeys.length; _i < _len; _i++) {
      key = pageCacheKeys[_i];
      if (!(pageCache[key].cachedAt <= cacheTimesRecentFirst[limit])) {
        continue;
      }
      triggerEvent(EVENTS.EXPIRE, pageCache[key]);
      _results.push(delete pageCache[key]);
    }
    return _results;
  };

  changePage = function(title, body, csrfToken, runScripts) {
    triggerEvent(EVENTS.BEFORE_UNLOAD);
    document.title = title;
    document.documentElement.replaceChild(body, document.body);
    if (csrfToken != null) {
      CSRFToken.update(csrfToken);
    }
    setAutofocusElement();
    if (runScripts) {
      executeScriptTags();
    }
    currentState = window.history.state;
    if (progressBar != null) {
      progressBar.done();
    }
    triggerEvent(EVENTS.CHANGE);
    return triggerEvent(EVENTS.UPDATE);
  };

  executeScriptTags = function() {
    var attr, copy, nextSibling, parentNode, script, scripts, _i, _j, _len, _len1, _ref, _ref1;
    scripts = Array.prototype.slice.call(document.body.querySelectorAll('script:not([data-turbolinks-eval="false"])'));
    for (_i = 0, _len = scripts.length; _i < _len; _i++) {
      script = scripts[_i];
      if (!((_ref = script.type) === '' || _ref === 'text/javascript')) {
        continue;
      }
      copy = document.createElement('script');
      _ref1 = script.attributes;
      for (_j = 0, _len1 = _ref1.length; _j < _len1; _j++) {
        attr = _ref1[_j];
        copy.setAttribute(attr.name, attr.value);
      }
      if (!script.hasAttribute('async')) {
        copy.async = false;
      }
      copy.appendChild(document.createTextNode(script.innerHTML));
      parentNode = script.parentNode, nextSibling = script.nextSibling;
      parentNode.removeChild(script);
      parentNode.insertBefore(copy, nextSibling);
    }
  };

  removeNoscriptTags = function(node) {
    node.innerHTML = node.innerHTML.replace(/<noscript[\S\s]*?<\/noscript>/ig, '');
    return node;
  };

  setAutofocusElement = function() {
    var autofocusElement, list;
    autofocusElement = (list = document.querySelectorAll('input[autofocus], textarea[autofocus]'))[list.length - 1];
    if (autofocusElement && document.activeElement !== autofocusElement) {
      return autofocusElement.focus();
    }
  };

  reflectNewUrl = function(url) {
    if ((url = new ComponentUrl(url)).absolute !== referer) {
      return window.history.pushState({
        turbolinks: true,
        url: url.absolute
      }, '', url.absolute);
    }
  };

  reflectRedirectedUrl = function() {
    var location, preservedHash;
    if (location = xhr.getResponseHeader('X-XHR-Redirected-To')) {
      location = new ComponentUrl(location);
      preservedHash = location.hasNoHash() ? document.location.hash : '';
      return window.history.replaceState(currentState, '', location.href + preservedHash);
    }
  };

  crossOriginRedirect = function() {
    var redirect;
    if (((redirect = xhr.getResponseHeader('Location')) != null) && (new ComponentUrl(redirect)).crossOrigin()) {
      return redirect;
    }
  };

  rememberReferer = function() {
    return referer = document.location.href;
  };

  rememberCurrentUrl = function() {
    return window.history.replaceState({
      turbolinks: true,
      url: document.location.href
    }, '', document.location.href);
  };

  rememberCurrentState = function() {
    return currentState = window.history.state;
  };

  manuallyTriggerHashChangeForFirefox = function() {
    var url;
    if (navigator.userAgent.match(/Firefox/) && !(url = new ComponentUrl).hasNoHash()) {
      window.history.replaceState(currentState, '', url.withoutHash());
      return document.location.hash = url.hash;
    }
  };

  recallScrollPosition = function(page) {
    return window.scrollTo(page.positionX, page.positionY);
  };

  resetScrollPosition = function() {
    if (document.location.hash) {
      return document.location.href = document.location.href;
    } else {
      return window.scrollTo(0, 0);
    }
  };

  clone = function(original) {
    var copy, key, value;
    if ((original == null) || typeof original !== 'object') {
      return original;
    }
    copy = new original.constructor();
    for (key in original) {
      value = original[key];
      copy[key] = clone(value);
    }
    return copy;
  };

  popCookie = function(name) {
    var value, _ref;
    value = ((_ref = document.cookie.match(new RegExp(name + "=(\\w+)"))) != null ? _ref[1].toUpperCase() : void 0) || '';
    document.cookie = name + '=; expires=Thu, 01-Jan-70 00:00:01 GMT; path=/';
    return value;
  };

  triggerEvent = function(name, data) {
    var event;
    if (typeof Prototype !== 'undefined') {
      Event.fire(document, name, data, true);
    }
    event = document.createEvent('Events');
    if (data) {
      event.data = data;
    }
    event.initEvent(name, true, true);
    return document.dispatchEvent(event);
  };

  pageChangePrevented = function(url) {
    return !triggerEvent(EVENTS.BEFORE_CHANGE, {
      url: url
    });
  };

  processResponse = function() {
    var assetsChanged, clientOrServerError, doc, extractTrackAssets, intersection, validContent;
    clientOrServerError = function() {
      var _ref;
      return (400 <= (_ref = xhr.status) && _ref < 600);
    };
    validContent = function() {
      var contentType;
      return ((contentType = xhr.getResponseHeader('Content-Type')) != null) && contentType.match(/^(?:text\/html|application\/xhtml\+xml|application\/xml)(?:;|$)/);
    };
    extractTrackAssets = function(doc) {
      var node, _i, _len, _ref, _results;
      _ref = doc.querySelector('head').childNodes;
      _results = [];
      for (_i = 0, _len = _ref.length; _i < _len; _i++) {
        node = _ref[_i];
        if ((typeof node.getAttribute === "function" ? node.getAttribute('data-turbolinks-track') : void 0) != null) {
          _results.push(node.getAttribute('src') || node.getAttribute('href'));
        }
      }
      return _results;
    };
    assetsChanged = function(doc) {
      var fetchedAssets;
      loadedAssets || (loadedAssets = extractTrackAssets(document));
      fetchedAssets = extractTrackAssets(doc);
      return fetchedAssets.length !== loadedAssets.length || intersection(fetchedAssets, loadedAssets).length !== loadedAssets.length;
    };
    intersection = function(a, b) {
      var value, _i, _len, _ref, _results;
      if (a.length > b.length) {
        _ref = [b, a], a = _ref[0], b = _ref[1];
      }
      _results = [];
      for (_i = 0, _len = a.length; _i < _len; _i++) {
        value = a[_i];
        if (__indexOf.call(b, value) >= 0) {
          _results.push(value);
        }
      }
      return _results;
    };
    if (!clientOrServerError() && validContent()) {
      doc = createDocument(xhr.responseText);
      if (doc && !assetsChanged(doc)) {
        return doc;
      }
    }
  };

  extractTitleAndBody = function(doc) {
    var title;
    title = doc.querySelector('title');
    return [title != null ? title.textContent : void 0, removeNoscriptTags(doc.querySelector('body')), CSRFToken.get(doc).token, 'runScripts'];
  };

  CSRFToken = {
    get: function(doc) {
      var tag;
      if (doc == null) {
        doc = document;
      }
      return {
        node: tag = doc.querySelector('meta[name="csrf-token"]'),
        token: tag != null ? typeof tag.getAttribute === "function" ? tag.getAttribute('content') : void 0 : void 0
      };
    },
    update: function(latest) {
      var current;
      current = this.get();
      if ((current.token != null) && (latest != null) && current.token !== latest) {
        return current.node.setAttribute('content', latest);
      }
    }
  };

  browserCompatibleDocumentParser = function() {
    var buildTestsUsing, createDocumentUsingDOM, createDocumentUsingFragment, createDocumentUsingParser, createDocumentUsingWrite, docTest, docTests, e, _i, _len;
    createDocumentUsingParser = function(html) {
      return (new DOMParser).parseFromString(html, 'text/html');
    };
    createDocumentUsingDOM = function(html) {
      var doc;
      doc = document.implementation.createHTMLDocument('');
      doc.documentElement.innerHTML = html;
      return doc;
    };
    createDocumentUsingWrite = function(html) {
      var doc;
      doc = document.implementation.createHTMLDocument('');
      doc.open('replace');
      doc.write(html);
      doc.close();
      return doc;
    };
    createDocumentUsingFragment = function(html) {
      var body, doc, head, htmlWrapper, _ref, _ref1;
      head = ((_ref = html.match(/<head[^>]*>([\s\S.]*)<\/head>/i)) != null ? _ref[0] : void 0) || '<head></head>';
      body = ((_ref1 = html.match(/<body[^>]*>([\s\S.]*)<\/body>/i)) != null ? _ref1[0] : void 0) || '<body></body>';
      htmlWrapper = document.createElement('html');
      htmlWrapper.innerHTML = head + body;
      doc = document.createDocumentFragment();
      doc.appendChild(htmlWrapper);
      return doc;
    };
    buildTestsUsing = function(createMethod) {
      var buildTest, formNestingTest, structureTest;
      buildTest = function(fallback, passes) {
        return {
          passes: passes(),
          fallback: fallback
        };
      };
      structureTest = buildTest(createDocumentUsingWrite, (function(_this) {
        return function() {
          var _ref, _ref1;
          return ((_ref = createMethod('<html><body><p>test')) != null ? (_ref1 = _ref.body) != null ? _ref1.childNodes.length : void 0 : void 0) === 1;
        };
      })(this));
      formNestingTest = buildTest(createDocumentUsingFragment, (function(_this) {
        return function() {
          var _ref, _ref1;
          return ((_ref = createMethod('<html><body><form></form><div></div></body></html>')) != null ? (_ref1 = _ref.body) != null ? _ref1.childNodes.length : void 0 : void 0) === 2;
        };
      })(this));
      return [structureTest, formNestingTest];
    };
    try {
      if (window.DOMParser) {
        docTests = buildTestsUsing(createDocumentUsingParser);
        return createDocumentUsingParser;
      }
    } catch (_error) {
      e = _error;
      docTests = buildTestsUsing(createDocumentUsingDOM);
      return createDocumentUsingDOM;
    } finally {
      for (_i = 0, _len = docTests.length; _i < _len; _i++) {
        docTest = docTests[_i];
        if (!docTest.passes) {
          return docTest.fallback;
        }
      }
    }
  };

  ComponentUrl = (function() {
    function ComponentUrl(original) {
      this.original = original != null ? original : document.location.href;
      if (this.original.constructor === ComponentUrl) {
        return this.original;
      }
      this._parse();
    }

    ComponentUrl.prototype.withoutHash = function() {
      return this.href.replace(this.hash, '').replace('#', '');
    };

    ComponentUrl.prototype.withoutHashForIE10compatibility = function() {
      return this.withoutHash();
    };

    ComponentUrl.prototype.hasNoHash = function() {
      return this.hash.length === 0;
    };

    ComponentUrl.prototype.crossOrigin = function() {
      return this.origin !== (new ComponentUrl).origin;
    };

    ComponentUrl.prototype._parse = function() {
      var _ref;
      (this.link != null ? this.link : this.link = document.createElement('a')).href = this.original;
      _ref = this.link, this.href = _ref.href, this.protocol = _ref.protocol, this.host = _ref.host, this.hostname = _ref.hostname, this.port = _ref.port, this.pathname = _ref.pathname, this.search = _ref.search, this.hash = _ref.hash;
      this.origin = [this.protocol, '//', this.hostname].join('');
      if (this.port.length !== 0) {
        this.origin += ":" + this.port;
      }
      this.relative = [this.pathname, this.search, this.hash].join('');
      return this.absolute = this.href;
    };

    return ComponentUrl;

  })();

  Link = (function(_super) {
    __extends(Link, _super);

    Link.HTML_EXTENSIONS = ['html'];

    Link.allowExtensions = function() {
      var extension, extensions, _i, _len;
      extensions = 1 <= arguments.length ? __slice.call(arguments, 0) : [];
      for (_i = 0, _len = extensions.length; _i < _len; _i++) {
        extension = extensions[_i];
        Link.HTML_EXTENSIONS.push(extension);
      }
      return Link.HTML_EXTENSIONS;
    };

    function Link(link) {
      this.link = link;
      if (this.link.constructor === Link) {
        return this.link;
      }
      this.original = this.link.href;
      this.originalElement = this.link;
      this.link = this.link.cloneNode(false);
      Link.__super__.constructor.apply(this, arguments);
    }

    Link.prototype.shouldIgnore = function() {
      return this.crossOrigin() || this._anchored() || this._nonHtml() || this._optOut() || this._target();
    };

    Link.prototype._anchored = function() {
      return (this.hash.length > 0 || this.href.charAt(this.href.length - 1) === '#') && (this.withoutHash() === (new ComponentUrl).withoutHash());
    };

    Link.prototype._nonHtml = function() {
      return this.pathname.match(/\.[a-z]+$/g) && !this.pathname.match(new RegExp("\\.(?:" + (Link.HTML_EXTENSIONS.join('|')) + ")?$", 'g'));
    };

    Link.prototype._optOut = function() {
      var ignore, link;
      link = this.originalElement;
      while (!(ignore || link === document)) {
        ignore = link.getAttribute('data-no-turbolink') != null;
        link = link.parentNode;
      }
      return ignore;
    };

    Link.prototype._target = function() {
      return this.link.target.length !== 0;
    };

    return Link;

  })(ComponentUrl);

  Click = (function() {
    Click.installHandlerLast = function(event) {
      if (!event.defaultPrevented) {
        document.removeEventListener('click', Click.handle, false);
        return document.addEventListener('click', Click.handle, false);
      }
    };

    Click.handle = function(event) {
      return new Click(event);
    };

    function Click(event) {
      this.event = event;
      if (this.event.defaultPrevented) {
        return;
      }
      this._extractLink();
      if (this._validForTurbolinks()) {
        if (!pageChangePrevented(this.link.absolute)) {
          visit(this.link.href);
        }
        this.event.preventDefault();
      }
    }

    Click.prototype._extractLink = function() {
      var link;
      link = this.event.target;
      while (!(!link.parentNode || link.nodeName === 'A')) {
        link = link.parentNode;
      }
      if (link.nodeName === 'A' && link.href.length !== 0) {
        return this.link = new Link(link);
      }
    };

    Click.prototype._validForTurbolinks = function() {
      return (this.link != null) && !(this.link.shouldIgnore() || this._nonStandardClick());
    };

    Click.prototype._nonStandardClick = function() {
      return this.event.which > 1 || this.event.metaKey || this.event.ctrlKey || this.event.shiftKey || this.event.altKey;
    };

    return Click;

  })();

  ProgressBar = (function() {
    var className;

    className = 'turbolinks-progress-bar';

    function ProgressBar(elementSelector) {
      this.elementSelector = elementSelector;
      this._trickle = __bind(this._trickle, this);
      this.value = 0;
      this.opacity = 1;
      this.content = '';
      this.speed = 300;
      this.install();
    }

    ProgressBar.prototype.install = function() {
      this.element = document.querySelector(this.elementSelector);
      this.element.classList.add(className);
      this.styleElement = document.createElement('style');
      document.head.appendChild(this.styleElement);
      return this._updateStyle();
    };

    ProgressBar.prototype.uninstall = function() {
      this.element.classList.remove(className);
      return document.head.removeChild(this.styleElement);
    };

    ProgressBar.prototype.start = function() {
      return this.advanceTo(5);
    };

    ProgressBar.prototype.advanceTo = function(value) {
      var _ref;
      if ((value > (_ref = this.value) && _ref <= 100)) {
        this.value = value;
        this._updateStyle();
        if (this.value === 100) {
          return this._stopTrickle();
        } else if (this.value > 0) {
          return this._startTrickle();
        }
      }
    };

    ProgressBar.prototype.done = function() {
      if (this.value > 0) {
        this.advanceTo(100);
        return this._reset();
      }
    };

    ProgressBar.prototype._reset = function() {
      setTimeout((function(_this) {
        return function() {
          _this.opacity = 0;
          return _this._updateStyle();
        };
      })(this), this.speed / 2);
      return setTimeout((function(_this) {
        return function() {
          _this.value = 0;
          _this.opacity = 1;
          return _this._withSpeed(0, function() {
            return _this._updateStyle(true);
          });
        };
      })(this), this.speed);
    };

    ProgressBar.prototype._startTrickle = function() {
      if (this.trickling) {
        return;
      }
      this.trickling = true;
      return setTimeout(this._trickle, this.speed);
    };

    ProgressBar.prototype._stopTrickle = function() {
      return delete this.trickling;
    };

    ProgressBar.prototype._trickle = function() {
      if (!this.trickling) {
        return;
      }
      this.advanceTo(this.value + Math.random() / 2);
      return setTimeout(this._trickle, this.speed);
    };

    ProgressBar.prototype._withSpeed = function(speed, fn) {
      var originalSpeed, result;
      originalSpeed = this.speed;
      this.speed = speed;
      result = fn();
      this.speed = originalSpeed;
      return result;
    };

    ProgressBar.prototype._updateStyle = function(forceRepaint) {
      if (forceRepaint == null) {
        forceRepaint = false;
      }
      if (forceRepaint) {
        this._changeContentToForceRepaint();
      }
      return this.styleElement.textContent = this._createCSSRule();
    };

    ProgressBar.prototype._changeContentToForceRepaint = function() {
      return this.content = this.content === '' ? ' ' : '';
    };

    ProgressBar.prototype._createCSSRule = function() {
      return "" + this.elementSelector + "." + className + "::before {\n  content: '" + this.content + "';\n  position: fixed;\n  top: 0;\n  left: 0;\n  background-color: #0076ff;\n  height: 3px;\n  opacity: " + this.opacity + ";\n  width: " + this.value + "%;\n  transition: width " + this.speed + "ms ease-out, opacity " + (this.speed / 2) + "ms ease-in;\n  transform: translate3d(0,0,0);\n}";
    };

    return ProgressBar;

  })();

  bypassOnLoadPopstate = function(fn) {
    return setTimeout(fn, 500);
  };

  installDocumentReadyPageEventTriggers = function() {
    return document.addEventListener('DOMContentLoaded', (function() {
      triggerEvent(EVENTS.CHANGE);
      return triggerEvent(EVENTS.UPDATE);
    }), true);
  };

  installJqueryAjaxSuccessPageUpdateTrigger = function() {
    if (typeof jQuery !== 'undefined') {
      return jQuery(document).on('ajaxSuccess', function(event, xhr, settings) {
        if (!jQuery.trim(xhr.responseText)) {
          return;
        }
        return triggerEvent(EVENTS.UPDATE);
      });
    }
  };

  installHistoryChangeHandler = function(event) {
    var cachedPage, _ref;
    if ((_ref = event.state) != null ? _ref.turbolinks : void 0) {
      if (cachedPage = pageCache[(new ComponentUrl(event.state.url)).absolute]) {
        cacheCurrentPage();
        return fetchHistory(cachedPage);
      } else {
        return visit(event.target.location.href);
      }
    }
  };

  initializeTurbolinks = function() {
    rememberCurrentUrl();
    rememberCurrentState();
    createDocument = browserCompatibleDocumentParser();
    document.addEventListener('click', Click.installHandlerLast, true);
    window.addEventListener('hashchange', function(event) {
      rememberCurrentUrl();
      return rememberCurrentState();
    }, false);
    return bypassOnLoadPopstate(function() {
      return window.addEventListener('popstate', installHistoryChangeHandler, false);
    });
  };

  historyStateIsDefined = window.history.state !== void 0 || navigator.userAgent.match(/Firefox\/2[6|7]/);

  browserSupportsPushState = window.history && window.history.pushState && window.history.replaceState && historyStateIsDefined;

  browserIsntBuggy = !navigator.userAgent.match(/CriOS\//);

  requestMethodIsSafe = (_ref = popCookie('request_method')) === 'GET' || _ref === '';

  browserSupportsTurbolinks = browserSupportsPushState && browserIsntBuggy && requestMethodIsSafe;

  browserSupportsCustomEvents = document.addEventListener && document.createEvent;

  if (browserSupportsCustomEvents) {
    installDocumentReadyPageEventTriggers();
    installJqueryAjaxSuccessPageUpdateTrigger();
  }

  if (browserSupportsTurbolinks) {
    visit = fetch;
    initializeTurbolinks();
  } else {
    visit = function(url) {
      return document.location.href = url;
    };
  }

  this.Turbolinks = {
    visit: visit,
    pagesCached: pagesCached,
    enableTransitionCache: enableTransitionCache,
    enableProgressBar: enableProgressBar,
    allowLinkExtensions: Link.allowExtensions,
    supported: browserSupportsTurbolinks,
    EVENTS: clone(EVENTS)
  };

}).call(this);
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