diff --git a/src/actions/index.js b/src/actions/index.js
index ce86367..9df2fe0 100644
--- a/src/actions/index.js
+++ b/src/actions/index.js
@@ -58,7 +58,7 @@ export function fetchDomain () {
 
     return Promise.all([ eventPromise, catPromise, sitesPromise, tagsPromise])
       .then(response => {
-        dispatch(toggleFetchingDomain());
+        dispatch(toggleFetchingDomain())
         const result = {
           events: response[0],
           categories: response[1],
@@ -70,12 +70,12 @@ export function fetchDomain () {
       })
       .catch(err => {
         dispatch(fetchError(err.message))
-        dispatch(toggleFetchingDomain());
+        dispatch(toggleFetchingDomain())
       })
   };
 }
 
-export const FETCH_ERROR = 'FETCH_ERROR';
+export const FETCH_ERROR = 'FETCH_ERROR'
 export function fetchError(message) {
   return {
     type: FETCH_ERROR,
@@ -83,113 +83,114 @@ export function fetchError(message) {
   }
 }
 
-export const UPDATE_DOMAIN = 'UPDATE_DOMAIN';
+export const UPDATE_DOMAIN = 'UPDATE_DOMAIN'
 export function updateDomain(domain) {
-    return {
-        type: UPDATE_DOMAIN,
-        domain: {
-          events: domain.events,
-          categories: domain.categories,
-          tags: domain.tags,
-          sites: domain.sites,
-          notifications: domain.notifications
-        }
-    };
+  return {
+    type: UPDATE_DOMAIN,
+    domain: {
+      events: domain.events,
+      categories: domain.categories,
+      tags: domain.tags,
+      sites: domain.sites,
+      notifications: domain.notifications
+    }
+  }
 }
 
-export function fetchEvents(events) {
-    return dispatch => {
-        dispatch(toggleFetchingEvents());
-        const urls = events.map(eventUrlMap);
-        return Promise.all(urls.map(url => fetch(url)
-            .then(response => response.json())
-          )
-        )
-        .then(json => {
-            dispatch(toggleFetchingEvents());
-            return json;
-        });
-    };
+export function fetchEvents (events) {
+  return dispatch => {
+    dispatch(toggleFetchingEvents())
+    const urls = events.map(eventUrlMap)
+    return Promise.all(
+      urls.map(url => fetch(url)
+        .then(response => response.json())
+      )
+    )
+      .then(json => {
+        dispatch(toggleFetchingEvents())
+        return json
+      })
+  }
 }
 
-export const UPDATE_HIGHLIGHTED = 'UPDATE_HIGHLIGHTED';
+export const UPDATE_HIGHLIGHTED = 'UPDATE_HIGHLIGHTED'
 export function updateHighlighted(highlighted) {
     return {
         type: UPDATE_HIGHLIGHTED,
         highlighted: highlighted
-    };
+    }
 }
 
-export const UPDATE_SELECTED = 'UPDATE_SELECTED';
+export const UPDATE_SELECTED = 'UPDATE_SELECTED'
 export function updateSelected(selected) {
     return {
         type: UPDATE_SELECTED,
         selected: selected
-    };
+    }
 }
 
-export const UPDATE_DISTRICT = 'UPDATE_DISTRICT';
+export const UPDATE_DISTRICT = 'UPDATE_DISTRICT'
 export function updateDistrict(district) {
     return {
         type: UPDATE_DISTRICT,
         district
-    };
+    }
 }
 
-export const UPDATE_TAGFILTERS = 'UPDATE_TIMEFILTERS';
+export const UPDATE_TAGFILTERS = 'UPDATE_TIMEFILTERS'
 export function updateTagFilters(tag) {
     return {
         type: UPDATE_TAGFILTERS,
         tag
-    };
+    }
 }
 
-export const UPDATE_TIMERANGE = 'UPDATE_TIMERANGE';
+export const UPDATE_TIMERANGE = 'UPDATE_TIMERANGE'
 export function updateTimeRange(range) {
     return {
         type: UPDATE_TIMERANGE,
         range
-    };
+    }
 }
 
-export const RESET_ALLFILTERS = 'RESET_ALLFILTERS';
+export const RESET_ALLFILTERS = 'RESET_ALLFILTERS'
 export function resetAllFilters() {
     return {
         type: RESET_ALLFILTERS
-    };
+    }
 }
 
 // UI
 
-export const TOGGLE_FETCHING_DOMAIN = 'TOGGLE_FETCHING_DOMAIN';
+export const TOGGLE_FETCHING_DOMAIN = 'TOGGLE_FETCHING_DOMAIN'
 export function toggleFetchingDomain() {
     return {
         type: TOGGLE_FETCHING_DOMAIN
-    };
+    }
 }
 
-export const TOGGLE_FETCHING_EVENTS = 'TOGGLE_FETCHING_EVENTS';
+export const TOGGLE_FETCHING_EVENTS = 'TOGGLE_FETCHING_EVENTS'
 export function toggleFetchingEvents() {
     return {
         type: TOGGLE_FETCHING_EVENTS
-    };
+    }
 }
 
-export const TOGGLE_VIEW = 'TOGGLE_VIEW';
+export const TOGGLE_VIEW = 'TOGGLE_VIEW'
 export function toggleView() {
     return {
         type: TOGGLE_VIEW
-    };
+    }
 }
 
-export const TOGGLE_TIMELINE = 'TOGGLE_TIMELINE';
+export const TOGGLE_TIMELINE = 'TOGGLE_TIMELINE'
 export function toggleTimeline() {
     return {
         type: TOGGLE_TIMELINE
-    };
+    }
 }
 
-export const TOGGLE_LANGUAGE = 'TOGGLE_LANGUAGE';
+export const TOGGLE_LANGUAGE = 'TOGGLE_LANGUAGE'
 export function toggleLanguage(language) {
     return {
         type: TOGGLE_LANGUAGE,
@@ -197,46 +198,46 @@ export function toggleLanguage(language) {
     }
 }
 
-export const OPEN_TOOLBAR = 'OPEN_TOOLBAR';
+export const OPEN_TOOLBAR = 'OPEN_TOOLBAR'
 export function openToolbar(toolbarTab = 0) {
     return {
         type: OPEN_TOOLBAR,
         toolbarTab: toolbarTab,
-    };
+    }
 }
 
-export const CLOSE_TOOLBAR = 'CLOSE_TOOLBAR';
+export const CLOSE_TOOLBAR = 'CLOSE_TOOLBAR'
 export function closeToolbar() {
     return {
         type: CLOSE_TOOLBAR
-    };
+    }
 }
 
-export const OPEN_CABINET = 'OPEN_CABINET';
+export const OPEN_CABINET = 'OPEN_CABINET'
 export function openCabinet(tabNum) {
     return {
         type: OPEN_CABINET,
         tabNum: tabNum,
-    };
+    }
 }
 
-export const CLOSE_CABINET = 'CLOSE_CABINET';
+export const CLOSE_CABINET = 'CLOSE_CABINET'
 export function closeCabinet() {
     return {
         type: CLOSE_CABINET
-    };
+    }
 }
 
-export const TOGGLE_INFOPOPUP = 'TOGGLE_INFOPOPUP';
+export const TOGGLE_INFOPOPUP = 'TOGGLE_INFOPOPUP'
 export function toggleInfoPopup() {
     return {
         type: TOGGLE_INFOPOPUP
-    };
+    }
 }
 
-export const TOGGLE_NOTIFICATIONS = 'TOGGLE_NOTIFICATIONS';
+export const TOGGLE_NOTIFICATIONS = 'TOGGLE_NOTIFICATIONS'
 export function toggleNotifications() {
     return {
         type: TOGGLE_NOTIFICATIONS
-    };
+    }
 }
diff --git a/src/reducers/domain.js b/src/reducers/domain.js
index 11a64d9..4e56634 100644
--- a/src/reducers/domain.js
+++ b/src/reducers/domain.js
@@ -1,25 +1,22 @@
-import initial from '../store/initial.js';
+import initial from '../store/initial.js'
 
-import {
-  UPDATE_DOMAIN,
-} from '../actions';
+import { UPDATE_DOMAIN } from '../actions'
+import { parseDateTimes } from './utils/helpers.js'
+import { validate } from './utils/validators.js'
 
-import { parseDateTimes } from './utils/helpers.js';
-import { validate } from './utils/validators.js';
+function updateDomain (domainState, action) {
+  action.domain.events = parseDateTimes(action.domain.events)
 
-function updateDomain(domainState, action) {
-  action.domain.events = parseDateTimes(action.domain.events);
-
-  return Object.assign({}, domainState, validate(action.domain));
+  return Object.assign({}, domainState, validate(action.domain))
 }
 
-function domain(domainState = initial.domain, action) {
+function domain (domainState = initial.domain, action) {
   switch (action.type) {
     case UPDATE_DOMAIN:
-      return updateDomain(domainState, action);
+      return updateDomain(domainState, action)
     default:
-      return domainState;
+      return domainState
   }
 }
 
-export default domain;
+export default domain
diff --git a/src/selectors/index.js b/src/selectors/index.js
index cd0bb46..5a8f00b 100644
--- a/src/selectors/index.js
+++ b/src/selectors/index.js
@@ -3,60 +3,60 @@ import {
 } from 'reselect'
 
 // Input selectors
-export const getEvents = state => state.domain.events;
-export const getLocations = state => state.domain.locations;
-export const getCategories = state => state.domain.categories;
+export const getEvents = state => state.domain.events
+export const getLocations = state => state.domain.locations
+export const getCategories = state => state.domain.categories
 export const getSites = (state) => {
-  if (process.env.features.USE_SITES) return state.domain.sites;
-  return [];
+  if (process.env.features.USE_SITES) return state.domain.sites
+  return []
 }
-export const getAllTags = state => state.domain.tags;
+export const getAllTags = state => state.domain.tags
 
-export const getCategoriesFilter = state => state.app.filters.categories;
-export const getTagsFilter = state => state.app.filters.tags;
-export const getRangeFilter = state => state.app.filters.range;
+export const getCategoriesFilter = state => state.app.filters.categories
+export const getTagsFilter = state => state.app.filters.tags
+export const getRangeFilter = state => state.app.filters.range
 
 // NB: should we stick with the default semantics and name these as selectors?
 // e.g. 'selectEvents', 'selectCoevents'.
 // Filter events
-function isTaggedIn(event, tagFilters) {
+function isTaggedIn (event, tagFilters) {
   if (event.tags) {
-    const tagsArray = event.tags.split(",");
+    const tagsArray = event.tags.split(',')
     const isTagged = tagsArray.some((tag) => {
       return tagFilters.find((tagFilter) => {
-        return (tagFilter.key === tag && tagFilter.active);
+        return (tagFilter.key === tag && tagFilter.active)
       })
-    });
-    return isTagged;
+    })
+    return isTagged
   } else {
-    return false;
+    return false
   }
 }
 
-
 /**
  * Of all available events, selects those that fall within the time range,
  * and if TAGS are being used, select them if their tags are enabled
  */
 export const getFilteredEvents = createSelector(
-    [getEvents, getTagsFilter, getRangeFilter],
-    (events, tagFilters, rangeFilter) => {
+  [getEvents, getTagsFilter, getRangeFilter],
+  (events, tagFilters, rangeFilter) => {
+    return events.reduce((acc, value) => {
+      const noTags = (tagFilters.length === 0 || !process.env.features.USE_TAGS || tagFilters.every(t => !t.active))
 
-      return events.reduce((acc, value) => {
-        const noTags = (tagFilters.length === 0 || !process.env.features.USE_TAGS || tagFilters.every(t => !t.active));
+      const isTagged = (noTags) || isTaggedIn(value, tagFilters)
 
-        const isTagged = (noTags) || isTaggedIn(value, tagFilters);
+      // TODO: put this datetime format as a constant
+      const isRange = (rangeFilter[0] < d3.timeParse('%Y-%m-%dT%H:%M:%S')(value.timestamp)) &&
+          (d3.timeParse('%Y-%m-%dT%H:%M:%S')(value.timestamp) < rangeFilter[1])
 
-        const isRange = (rangeFilter[0] < d3.timeParse("%Y-%m-%dT%H:%M:%S")(value.timestamp)) &&
-            (d3.timeParse("%Y-%m-%dT%H:%M:%S")(value.timestamp) < rangeFilter[1]);
-
-        if (isRange && isTagged) {
-          const event = Object.assign({}, value);
-          acc[event.id] = event;
-        }
-        return acc;
-    }, []);
-});
+      if (isRange && isTagged) {
+        const event = Object.assign({}, value)
+        acc[event.id] = event
+      }
+      return acc
+    }, [])
+  }
+)
 
 /**
  * Of all the filtered events, group them by location and return a list of
@@ -65,12 +65,11 @@ export const getFilteredEvents = createSelector(
 export const getFilteredLocations = createSelector(
   [getFilteredEvents],
   (events) => {
-
-    const filteredLocations = {};
+    const filteredLocations = {}
     events.forEach(event => {
-      const location = event.location;
+      const location = event.location
       if (filteredLocations[location]) {
-        filteredLocations[location].events.push(event);
+        filteredLocations[location].events.push(event)
       } else {
         filteredLocations[location] = {
           label: location,
@@ -81,17 +80,15 @@ export const getFilteredLocations = createSelector(
       }
     })
 
-  // Make locations an array are remove if any are undefined
-  return Object.values(filteredLocations).filter(item => item);
-});
+    // Make locations an array are remove if any are undefined
+    return Object.values(filteredLocations).filter(item => item)
+  }
+)
 
 // Filter categories
 export const getFilteredCategories = createSelector(
   [getCategories],
-  (categories) => {
-
-    return Object.values(categories);
-  });
+  (categories) => Object.values(categories))
 
 /**
  * Return categories by group
@@ -99,13 +96,12 @@ export const getFilteredCategories = createSelector(
 export const getCategoryGroups = createSelector(
   [getFilteredCategories],
   (categories) => {
-    const groups = {};
-    categories.forEach((t) => { if (t.group && !groups[t.group]) { groups[t.group] = t.group_label } });
-    return Object.keys(groups).concat(['other']);
+    const groups = {}
+    categories.forEach((t) => { if (t.group && !groups[t.group]) { groups[t.group] = t.group_label } })
+    return Object.keys(groups).concat(['other'])
   }
 )
 
-
 /**
  * Given a tree of tags, return those tags as a list, where each node has been
  * aware of its depth, and given an 'active' flag
@@ -113,22 +109,22 @@ export const getCategoryGroups = createSelector(
 export const getTagFilters = createSelector(
   [getAllTags],
   (tags) => {
-    const allTagFilters = [];
-    let depth = 0;
-    function traverseNode(node, depth) {
-      node.active = (!node.hasOwnProperty('active')) ? false : node.active;
-      node.depth = depth;
+    const allTagFilters = []
+    let depth = 0
+    function traverseNode (node, depth) {
+      node.active = (!node.hasOwnProperty('active')) ? false : node.active
+      node.depth = depth
       if (node.active) allTagFilters.push(node)
-      depth = depth + 1;
+      depth = depth + 1
 
       if (Object.keys(node.children).length > 0) {
         Object.values(node.children).forEach((childNode) => {
-          traverseNode(childNode, depth);
-        });
+          traverseNode(childNode, depth)
+        })
       }
     }
 
-    if (tags.key && tags.children) traverseNode(tags, depth)
-    return allTagFilters;
+    if (tags && tags.key && tags.children) traverseNode(tags, depth)
+    return allTagFilters
   }
 )