diff --git a/frontend/src/App.module.less b/frontend/src/App.module.less
index be1b03a..5c1d07f 100644
--- a/frontend/src/App.module.less
+++ b/frontend/src/App.module.less
@@ -5,7 +5,9 @@
   flex-direction: column;
   justify-content: stretch;
 
-  html, body, & {
+  html,
+  body,
+  & {
     min-height: 100%;
   }
 }
@@ -18,14 +20,20 @@
   background: @obsColorB4;
   color: @obsColorW;
 
-  h1, h2, h3, h4, h5, h6 {
+  h1,
+  h2,
+  h3,
+  h4,
+  h5,
+  h6 {
     &:global(.ui.header) {
       color: inherit;
     }
   }
 
   a {
-    &, &:hover {
+    &,
+    &:hover {
       color: inherit;
     }
 
@@ -65,7 +73,8 @@
   font-weight: 600;
   font-size: 18pt;
 
-  &, &:hover {
+  &,
+  &:hover {
     color: @obsColorB4;
   }
 }
@@ -114,16 +123,16 @@
 .banner {
   padding: 8px;
   z-index: 100;
-  border-bottom: 1px solid #DDD;
+  border-bottom: 1px solid #ddd;
 
   &.warning {
-    background: #FFD54F;
-    border-color: #FBC02D;
+    background: #ffd54f;
+    border-color: #fbc02d;
     color: #263238;
   }
   &.info {
-    background: #4FC3F7;
-    border-color: #0D47A1;
-    color: #0D47A1;
+    background: #4fc3f7;
+    border-color: #0d47a1;
+    color: #0d47a1;
   }
 }
diff --git a/frontend/src/App.tsx b/frontend/src/App.tsx
index c2edc73..d2b1e0e 100644
--- a/frontend/src/App.tsx
+++ b/frontend/src/App.tsx
@@ -51,7 +51,7 @@ function DropdownItemForLink({navigate, ...props}) {
   )
 }
 
-function Banner({text, style = 'warning'}: {text: string, style: 'warning' | 'info'}) {
+function Banner({text, style = 'warning'}: {text: string; style: 'warning' | 'info'}) {
   return <div className={classnames(styles.banner, styles[style])}>{text}</div>
 }
 
diff --git a/frontend/src/api.js b/frontend/src/api.js
index 03a87b3..6faf624 100644
--- a/frontend/src/api.js
+++ b/frontend/src/api.js
@@ -47,7 +47,7 @@ class API {
 
   async makeLoginUrl() {
     const config = await configPromise
-    const url = new URL(config.loginUrl || (config.apiUrl + '/login'))
+    const url = new URL(config.loginUrl || config.apiUrl + '/login')
     url.searchParams.append('next', window.location.href) // bring us back to the current page
     return url.toString()
   }
diff --git a/frontend/src/components/Avatar/index.tsx b/frontend/src/components/Avatar/index.tsx
index 49519dc..a2d49f5 100644
--- a/frontend/src/components/Avatar/index.tsx
+++ b/frontend/src/components/Avatar/index.tsx
@@ -26,13 +26,13 @@ export default function Avatar({user, className}) {
   }
 
   if (!username) {
-    return <div className={classnames(className, "avatar", "empty-avatar")} />
+    return <div className={classnames(className, 'avatar', 'empty-avatar')} />
   }
 
   const color = getColor(username)
 
   return (
-    <div className={classnames(className, "avatar", "text-avatar")} style={{background: color}}>
+    <div className={classnames(className, 'avatar', 'text-avatar')} style={{background: color}}>
       {username && <span>{username[0]}</span>}
     </div>
   )
diff --git a/frontend/src/components/Avatar/styles.less b/frontend/src/components/Avatar/styles.less
index a4b7f20..575a11d 100644
--- a/frontend/src/components/Avatar/styles.less
+++ b/frontend/src/components/Avatar/styles.less
@@ -16,12 +16,10 @@
   }
 }
 
-
 .avatar.empty-avatar {
-  background: #AAA;
+  background: #aaa;
 }
 
-
 .avatar.text-avatar,
 .avatar.empty-avatar {
   // border-radius: 0.25rem;
@@ -40,4 +38,3 @@
     height: 64px;
   }
 }
-
diff --git a/frontend/src/components/ColorMapLegend.tsx b/frontend/src/components/ColorMapLegend.tsx
index b6ddd50..62047fb 100644
--- a/frontend/src/components/ColorMapLegend.tsx
+++ b/frontend/src/components/ColorMapLegend.tsx
@@ -13,18 +13,18 @@ export default function ColorMapLegend({map}: {map: ColorMap}) {
         <defs>
           <linearGradient id="gradient" x1="0" x2="1" y1="0" y2="0">
             {map.map(([value, color]) => (
-              <stop key={value} offset={normalizeValue(value) * 100 + '%'} stop-color={color} />
+              <stop key={value} offset={normalizeValue(value) * 100 + '%'} stopColor={color} />
             ))}
           </linearGradient>
         </defs>
 
         <rect id="rect1" x="0" y="0" width="100%" height="100%" fill="url(#gradient)" />
       </svg>
-      {map.map(([value]) => <span className={styles.tick} key={value}
-        style={{left: normalizeValue(value)*100 + '%'}}
-      >
-        {value.toFixed(2)}
-      </span>)}
+      {map.map(([value]) => (
+        <span className={styles.tick} key={value} style={{left: normalizeValue(value) * 100 + '%'}}>
+          {value.toFixed(2)}
+        </span>
+      ))}
     </div>
   )
 }
diff --git a/frontend/src/components/LoginButton.js b/frontend/src/components/LoginButton.js
index 1bc603f..192c86e 100644
--- a/frontend/src/components/LoginButton.js
+++ b/frontend/src/components/LoginButton.js
@@ -1,18 +1,25 @@
 import React from 'react'
-import {Button} from  'semantic-ui-react'
+import {Button} from 'semantic-ui-react'
 
 import api from 'api'
 
-export default function LoginButton(props)  {
+export default function LoginButton(props) {
   const [busy, setBusy] = React.useState(false)
 
-  const onClick = React.useCallback(async (e) => {
-    e.preventDefault()
-    setBusy(true)
-    const url = await api.makeLoginUrl()
-    window.location.href = url
-    setBusy(false)
-  }, [setBusy])
+  const onClick = React.useCallback(
+    async (e) => {
+      e.preventDefault()
+      setBusy(true)
+      const url = await api.makeLoginUrl()
+      window.location.href = url
+      setBusy(false)
+    },
+    [setBusy]
+  )
 
-  return <Button onClick={busy ? null : onClick} loading={busy} {...props}>Login</Button>
+  return (
+    <Button onClick={busy ? null : onClick} loading={busy} {...props}>
+      Login
+    </Button>
+  )
 }
diff --git a/frontend/src/components/Map/index.tsx b/frontend/src/components/Map/index.tsx
index 598cdcd..86c82ce 100644
--- a/frontend/src/components/Map/index.tsx
+++ b/frontend/src/components/Map/index.tsx
@@ -12,7 +12,11 @@ import {baseMapStyles} from '../../mapstyles'
 
 import styles from './styles.module.less'
 
-interface Viewport {longitude: number; latitude: number; zoom: number}
+interface Viewport {
+  longitude: number
+  latitude: number
+  zoom: number
+}
 const EMPTY_VIEWPORT: Viewport = {longitude: 0, latitude: 0, zoom: 0}
 
 export const withBaseMapStyle = connect((state) => ({baseMapStyle: state.mapConfig?.baseMap?.style ?? 'positron'}))
@@ -32,7 +36,7 @@ function buildHash(v: Viewport): string {
   return `${v.zoom.toFixed(2)}/${v.latitude}/${v.longitude}`
 }
 
-function useViewportFromUrl(): [Viewport|null, (v: Viewport) => void] {
+function useViewportFromUrl(): [Viewport | null, (v: Viewport) => void] {
   const history = useHistory()
   const location = useLocation()
   const value = useMemo(() => parseHash(location.hash), [location.hash])
diff --git a/frontend/src/components/Page/index.tsx b/frontend/src/components/Page/index.tsx
index b2f864e..b5ce0d4 100644
--- a/frontend/src/components/Page/index.tsx
+++ b/frontend/src/components/Page/index.tsx
@@ -4,9 +4,26 @@ import {Container} from 'semantic-ui-react'
 
 import styles from './Page.module.less'
 
-export default function Page({small, children, fullScreen, stage}: {small?: boolean, children: ReactNode, fullScreen?: boolean,stage?: ReactNode}) {
+export default function Page({
+  small,
+  children,
+  fullScreen,
+  stage,
+}: {
+  small?: boolean
+  children: ReactNode
+  fullScreen?: boolean
+  stage?: ReactNode
+}) {
   return (
-    <main className={classnames(styles.page, small && styles.small, fullScreen && styles.fullScreen,stage && styles.hasStage)}>
+    <main
+      className={classnames(
+        styles.page,
+        small && styles.small,
+        fullScreen && styles.fullScreen,
+        stage && styles.hasStage
+      )}
+    >
       {stage}
       {fullScreen ? children : <Container>{children}</Container>}
     </main>
diff --git a/frontend/src/config.ts b/frontend/src/config.ts
index 8d10065..5e657eb 100644
--- a/frontend/src/config.ts
+++ b/frontend/src/config.ts
@@ -1,14 +1,16 @@
 import React from 'react'
 
-export type MapSoure = {
-  type: 'vector'
-  url: string,
-} | {
-  type: 'vector',
-  tiles: string[],
-  minzoom: number,
-  maxzoom: number,
-}
+export type MapSoure =
+  | {
+      type: 'vector'
+      url: string
+    }
+  | {
+      type: 'vector'
+      tiles: string[]
+      minzoom: number
+      maxzoom: number
+    }
 
 export interface Config {
   apiUrl: string
@@ -22,7 +24,7 @@ export interface Config {
   privacyPolicyUrl?: string
   banner?: {
     text: string
-    style?: "warning" | "info"
+    style?: 'warning' | 'info'
   }
 }
 
diff --git a/frontend/src/mapstyles/index.js b/frontend/src/mapstyles/index.js
index d05942b..9d61e9e 100644
--- a/frontend/src/mapstyles/index.js
+++ b/frontend/src/mapstyles/index.js
@@ -8,18 +8,17 @@ import viridisBase from 'colormap/res/res/viridis'
 export {bright, positron}
 export const baseMapStyles = {bright, positron}
 
-
 function simplifyColormap(colormap, maxCount = 16) {
   const result = []
   const step = Math.ceil(colormap.length / maxCount)
-  for (let i = 0; i < colormap.length;  i+= step) {
+  for (let i = 0; i < colormap.length; i += step) {
     result.push(colormap[i])
   }
   return result
 }
 
 function rgbArrayToColor(arr) {
-      return ['rgb', ...arr.map(v => Math.round(v*255))]
+  return ['rgb', ...arr.map((v) => Math.round(v * 255))]
 }
 
 export function colormapToScale(colormap, value, min, max) {
@@ -27,24 +26,19 @@ export function colormapToScale(colormap, value, min, max) {
     'interpolate-hcl',
     ['linear'],
     value,
-    ...colormap.flatMap((v, i, a) => [
-      (i / (a.length - 1)) * (max - min) + min,
-      v,
-    ])
+    ...colormap.flatMap((v, i, a) => [(i / (a.length - 1)) * (max - min) + min, v]),
   ]
 }
 
-export const viridis = simplifyColormap(viridisBase.map(rgbArrayToColor), 20);
+export const viridis = simplifyColormap(viridisBase.map(rgbArrayToColor), 20)
 export const grayscale = ['#FFFFFF', '#000000']
-export const reds = [['rgba', 255, 0, 0, 0], ['rgba', 255, 0, 0, 1]]
+export const reds = [
+  ['rgba', 255, 0, 0, 0],
+  ['rgba', 255, 0, 0, 1],
+]
 
 export function colorByCount(attribute = 'event_count', maxCount, colormap = viridis) {
-  return colormapToScale(
-    colormap,
-    ['case', ['to-boolean', ['get', attribute]], ['get', attribute], 0],
-    0,
-    maxCount
-  )
+  return colormapToScale(colormap, ['case', ['to-boolean', ['get', attribute]], ['get', attribute], 0], 0, maxCount)
 }
 
 export function colorByDistance(attribute = 'distance_overtaker_mean', fallback = '#ABC') {
@@ -68,13 +62,12 @@ export function colorByDistance(attribute = 'distance_overtaker_mean', fallback
   ]
 }
 
-
 export const trackLayer = {
   type: 'line',
   paint: {
     'line-width': ['interpolate', ['linear'], ['zoom'], 14, 2, 17, 5],
     'line-color': '#F06292',
-  }
+  },
 }
 
 export const basemap = positron
diff --git a/frontend/src/pages/HomePage.module.less b/frontend/src/pages/HomePage.module.less
index 98585b7..82dc4ac 100644
--- a/frontend/src/pages/HomePage.module.less
+++ b/frontend/src/pages/HomePage.module.less
@@ -1,4 +1,4 @@
-@import "styles.less";
+@import 'styles.less';
 
 .welcomeMap {
   height: 60rem;
diff --git a/frontend/src/pages/LogoutPage.js b/frontend/src/pages/LogoutPage.js
index 757c8f6..700c711 100644
--- a/frontend/src/pages/LogoutPage.js
+++ b/frontend/src/pages/LogoutPage.js
@@ -5,9 +5,7 @@ import {Redirect} from 'react-router-dom'
 
 import api from 'api'
 
-const LogoutPage = connect(
-  (state) => ({loggedIn: Boolean(state.login)}),
-)(function LogoutPage({loggedIn}) {
+const LogoutPage = connect((state) => ({loggedIn: Boolean(state.login)}))(function LogoutPage({loggedIn}) {
   React.useEffect(() => {
     // no await, just trigger it
     if (loggedIn) {
diff --git a/frontend/src/pages/MapPage/LayerSidebar.tsx b/frontend/src/pages/MapPage/LayerSidebar.tsx
index 079876f..77669fc 100644
--- a/frontend/src/pages/MapPage/LayerSidebar.tsx
+++ b/frontend/src/pages/MapPage/LayerSidebar.tsx
@@ -107,16 +107,18 @@ function LayerSidebar({
             <Header as="h4">Event points</Header>
           </label>
         </List.Item>
-    {showEvents && <><List.Item>
-          <ColorMapLegend map={_.chunk(colorByDistance('distance_overtaker')[3].slice(3), 2)} />
-        </List.Item>
-      </>}
+        {showEvents && (
+          <>
+            <List.Item>
+              <ColorMapLegend map={_.chunk(colorByDistance('distance_overtaker')[3].slice(3), 2)} />
+            </List.Item>
+          </>
+        )}
       </List>
     </div>
   )
 }
 
-
 export default connect(
   (state) => ({
     mapConfig: _.merge(
diff --git a/frontend/src/pages/MapPage/index.tsx b/frontend/src/pages/MapPage/index.tsx
index 5dfb5b3..af1c3fd 100644
--- a/frontend/src/pages/MapPage/index.tsx
+++ b/frontend/src/pages/MapPage/index.tsx
@@ -88,7 +88,7 @@ const getEventsTextLayer = () => ({
     'text-keep-upright': false,
     'text-anchor': 'left',
     'text-radial-offset': 1,
-    'text-rotate': ['-', 90, ['*', ['get', 'course'], 180/Math.PI]],
+    'text-rotate': ['-', 90, ['*', ['get', 'course'], 180 / Math.PI]],
     'text-rotation-alignment': 'map',
   },
   paint: {
diff --git a/frontend/src/pages/MapPage/styles.module.less b/frontend/src/pages/MapPage/styles.module.less
index 654d7e6..e4b8de1 100644
--- a/frontend/src/pages/MapPage/styles.module.less
+++ b/frontend/src/pages/MapPage/styles.module.less
@@ -2,7 +2,7 @@
 
 .mapContainer {
   height: calc(100vh - @menuHeight);
-  background: #F0F0F3;
+  background: #f0f0f3;
   position: relative;
   display: flex;
   align-items: stretch;
@@ -28,4 +28,3 @@
   overflow: auto;
   margin: 20px;
 }
-
diff --git a/frontend/src/pages/SettingsPage.tsx b/frontend/src/pages/SettingsPage.tsx
index 7185ca8..2dcbb02 100644
--- a/frontend/src/pages/SettingsPage.tsx
+++ b/frontend/src/pages/SettingsPage.tsx
@@ -54,7 +54,13 @@ const SettingsPage = connect((state) => ({login: state.login}), {setLogin})(func
 
             <Form onSubmit={handleSubmit(onSave)} loading={loading}>
               <Ref innerRef={findInput(register)}>
-                <Form.Input error={errors?.username} label="Username" name="username" defaultValue={login.username} disabled />
+                <Form.Input
+                  error={errors?.username}
+                  label="Username"
+                  name="username"
+                  defaultValue={login.username}
+                  disabled
+                />
               </Ref>
               <Form.Field error={errors?.bio}>
                 <label>Bio</label>
@@ -148,7 +154,7 @@ function ApiKeyDialog({login, onGenerateNewKey}) {
               <CopyInput label="Personal API Key" value={login.apiKey} />
             </Ref>
           ) : (
-            <Message warning content='You have no API Key, please generate one below.' />
+            <Message warning content="You have no API Key, please generate one below." />
           )
         ) : (
           <Button onClick={onClick}>
diff --git a/frontend/src/pages/TrackEditor.tsx b/frontend/src/pages/TrackEditor.tsx
index 9851019..a4de4a7 100644
--- a/frontend/src/pages/TrackEditor.tsx
+++ b/frontend/src/pages/TrackEditor.tsx
@@ -1,7 +1,20 @@
 import React from 'react'
 import _ from 'lodash'
 import {connect} from 'react-redux'
-import {Divider, Message, Confirm, Grid, Button, Icon, Popup, Form, Ref, TextArea, Checkbox, Header} from 'semantic-ui-react'
+import {
+  Divider,
+  Message,
+  Confirm,
+  Grid,
+  Button,
+  Icon,
+  Popup,
+  Form,
+  Ref,
+  TextArea,
+  Checkbox,
+  Header,
+} from 'semantic-ui-react'
 import {useHistory, useParams, Link} from 'react-router-dom'
 import {concat, of, from} from 'rxjs'
 import {pluck, distinctUntilChanged, map, switchMap} from 'rxjs/operators'
diff --git a/frontend/src/pages/TrackPage/TrackDetails.tsx b/frontend/src/pages/TrackPage/TrackDetails.tsx
index 778f07c..bbaec4c 100644
--- a/frontend/src/pages/TrackPage/TrackDetails.tsx
+++ b/frontend/src/pages/TrackPage/TrackDetails.tsx
@@ -20,10 +20,7 @@ export default function TrackDetails({track, isAuthor}) {
 
       {track.originalFileName != null && (
         <List.Item>
-          {isAuthor && (
-            <div style={{float: 'right'}}>
-            </div>
-          )}
+          {isAuthor && <div style={{float: 'right'}}></div>}
 
           <List.Header>Original Filename</List.Header>
           <code>{track.originalFileName}</code>
@@ -72,7 +69,6 @@ export default function TrackDetails({track, isAuthor}) {
         </List.Item>
       )}
 
-
       {track?.processingStatus != null && track?.processingStatus != 'error' && (
         <List.Item>
           <List.Header>Processing</List.Header>
diff --git a/frontend/src/pages/TrackPage/TrackPage.module.less b/frontend/src/pages/TrackPage/TrackPage.module.less
index 8f785ca..65716cd 100644
--- a/frontend/src/pages/TrackPage/TrackPage.module.less
+++ b/frontend/src/pages/TrackPage/TrackPage.module.less
@@ -1,4 +1,4 @@
-@import "styles.less";
+@import 'styles.less';
 
 .stage {
   position: relative;
diff --git a/frontend/src/pages/TracksPage.tsx b/frontend/src/pages/TracksPage.tsx
index c161a93..bfc7b03 100644
--- a/frontend/src/pages/TracksPage.tsx
+++ b/frontend/src/pages/TracksPage.tsx
@@ -26,9 +26,15 @@ function TracksPageTabs() {
 
   return (
     <Menu pointing secondary>
-      <Menu.Item name="/tracks" active={!isOwnTracksPage} {...{onClick}}>Tracks</Menu.Item>
+      <Menu.Item name="/tracks" active={!isOwnTracksPage} {...{onClick}}>
+        Tracks
+      </Menu.Item>
       <Menu.Item name="/my/tracks" active={isOwnTracksPage} {...{onClick}} />
-      <Menu.Item name="/upload" position='right' {...{onClick}}><Button color='green' compact size='small'>Upload</Button></Menu.Item>
+      <Menu.Item name="/upload" position="right" {...{onClick}}>
+        <Button color="green" compact size="small">
+          Upload
+        </Button>
+      </Menu.Item>
     </Menu>
   )
 }
@@ -131,7 +137,8 @@ export function TrackListItem({track, privateTracks = false}) {
             )}
 
             <span style={{marginLeft: '1em'}}>
-              <Icon color={COLOR_BY_STATUS[track.processingStatus]} name="bolt" fitted /> Processing {track.processingStatus}
+              <Icon color={COLOR_BY_STATUS[track.processingStatus]} name="bolt" fitted /> Processing{' '}
+              {track.processingStatus}
             </span>
           </Item.Extra>
         )}
diff --git a/frontend/src/styles.less b/frontend/src/styles.less
index 1952139..33c53cf 100644
--- a/frontend/src/styles.less
+++ b/frontend/src/styles.less
@@ -1,15 +1,15 @@
 @obsColorB4: #114594;
-@obsColorG1: #76520E;
-@obsColorW: #FFFFFF;
+@obsColorG1: #76520e;
+@obsColorW: #ffffff;
 @obsColorB1: #122037;
-@obsColorG6: #EFB509;
+@obsColorG6: #efb509;
 @obsColorS: #000000;
 
 @primaryColor: @obsColorB4;
 @secondaryColor: @obsColorG1;
-@borderColor: #E0E0E0;
+@borderColor: #e0e0e0;
 
 @menuHeight: 50px;
 
-@mobile: ~"screen and (max-width: 767px)";
-@desktop: ~"screen and (min-width: 768px)";
+@mobile: ~'screen and (max-width: 767px)';
+@desktop: ~'screen and (min-width: 768px)';
diff --git a/frontend/src/types.ts b/frontend/src/types.ts
index 6e11b65..4f25b56 100644
--- a/frontend/src/types.ts
+++ b/frontend/src/types.ts
@@ -7,9 +7,9 @@ export type UserProfile = {
 }
 
 export type TrackData = {
-  track: Feature<LineString>,
-  measurements: FeatureCollection,
-  overtakingEvents: FeatureCollection,
+  track: Feature<LineString>
+  measurements: FeatureCollection
+  overtakingEvents: FeatureCollection
 }
 
 export type Track = {
@@ -30,12 +30,12 @@ export type Track = {
 }
 
 export type TrackPoint = {
-  type: 'Feature',
-  geometry: Point,
+  type: 'Feature'
+  geometry: Point
   properties: {
-    distanceOvertaker: null | number,
-    distanceStationary: null | number,
-  },
+    distanceOvertaker: null | number
+    distanceStationary: null | number
+  }
 }
 
 export type TrackComment = {