diff --git a/.eslintrc.json b/.eslintrc.json
index b257559e..85736559 100644
--- a/.eslintrc.json
+++ b/.eslintrc.json
@@ -5,8 +5,8 @@
     },
     "extends": [
         "eslint:recommended",
-        "plugin:@typescript-eslint/recommended-type-checked",
-        "plugin:@typescript-eslint/stylistic-type-checked",
+        "plugin:@typescript-eslint/strict",
+        "plugin:@typescript-eslint/stylistic",
         "plugin:react/recommended",
         "prettier"
     ],
diff --git a/src/api/anonymous-api.ts b/src/api/anonymous-api.ts
index 94b601b6..18ef6626 100644
--- a/src/api/anonymous-api.ts
+++ b/src/api/anonymous-api.ts
@@ -1,3 +1,10 @@
+/* eslint-disable @typescript-eslint/no-unsafe-assignment */
+
+/* eslint-disable @typescript-eslint/no-unsafe-member-access */
+
+/* eslint-disable @typescript-eslint/no-unsafe-return */
+
+/* eslint-disable @typescript-eslint/no-explicit-any */
 import { Platform } from 'react-native'
 
 import packageInfo from '../../package.json'
@@ -14,7 +21,7 @@ export class APIError extends Error {
     public data: object
 
     constructor(status: number, data: object) {
-        super(`${JSON.stringify(data)} (${status})`)
+        super(`${JSON.stringify(data)} (${status.toString()})`)
         this.status = status
         this.data = data
     }
@@ -50,7 +57,7 @@ export class AnonymousAPIClient {
 
         try {
             return await resp.json()
-        } catch (e) {
+        } catch {
             throw new Error(`Response is not valid JSON (${await resp.text()})`)
         }
     }
diff --git a/src/api/authenticated-api.ts b/src/api/authenticated-api.ts
index 5b8c67b8..8dad99b7 100644
--- a/src/api/authenticated-api.ts
+++ b/src/api/authenticated-api.ts
@@ -1,3 +1,13 @@
+/* eslint-disable @typescript-eslint/no-unsafe-call */
+
+/* eslint-disable @typescript-eslint/no-unsafe-assignment */
+
+/* eslint-disable @typescript-eslint/no-unsafe-member-access */
+
+/* eslint-disable @typescript-eslint/no-unsafe-return */
+
+/* eslint-disable @typescript-eslint/no-explicit-any */
+
 /* eslint-disable @typescript-eslint/no-unsafe-argument */
 import {
     type Exams,
@@ -38,6 +48,7 @@ export class AuthenticatedAPIClient extends AnonymousAPIClient {
      * @param {object} params Request data
      * @returns {object}
      */
+    // eslint-disable-next-line @typescript-eslint/require-await
     async requestAuthenticated(params: object): Promise<any> {
         console.debug(params)
         return this.sessionHandler(async (session: any) => {
diff --git a/src/api/thi-session-handler.ts b/src/api/thi-session-handler.ts
index 1b9b3312..942aed72 100644
--- a/src/api/thi-session-handler.ts
+++ b/src/api/thi-session-handler.ts
@@ -118,7 +118,7 @@ export async function callWithSession<T>(
             await saveSecure('session', session)
             storage.set('sessionCreated', Date.now().toString())
             storage.set('isStudent', isStudent.toString())
-        } catch (e) {
+        } catch {
             throw new NoSessionError()
         }
     }
@@ -145,7 +145,7 @@ export async function callWithSession<T>(
                     await saveSecure('session', session)
                     storage.set('sessionCreated', Date.now().toString())
                     storage.set('isStudent', isStudent.toString())
-                } catch (e) {
+                } catch {
                     throw new NoSessionError()
                 }
                 return await method(session)
diff --git a/src/app/(flow)/onboarding.tsx b/src/app/(flow)/onboarding.tsx
index 0cd35be0..98a307ce 100644
--- a/src/app/(flow)/onboarding.tsx
+++ b/src/app/(flow)/onboarding.tsx
@@ -34,7 +34,7 @@ import Animated, {
 import { useSafeAreaInsets } from 'react-native-safe-area-context'
 import { createStyleSheet, useStyles } from 'react-native-unistyles'
 
-export default function OnboardingScreen(): JSX.Element {
+export default function OnboardingScreen(): React.JSX.Element {
     const { t, i18n } = useTranslation('flow')
     const setOnboarded = useFlowStore((state) => state.setOnboarded)
     const toggleUpdated = useFlowStore((state) => state.toggleUpdated)
@@ -73,7 +73,7 @@ export default function OnboardingScreen(): JSX.Element {
         },
     ]
 
-    const ContinueButton = (): JSX.Element => {
+    const ContinueButton = (): React.JSX.Element => {
         const { styles } = useStyles(stylesheet)
         return (
             <Pressable
@@ -111,7 +111,7 @@ export default function OnboardingScreen(): JSX.Element {
     const [isWhobbleDisabled, setWhobbleDisabled] = useState(true)
     const window = Dimensions.get('window')
 
-    const CardsElement = (): JSX.Element => {
+    const CardsElement = (): React.JSX.Element => {
         const { styles } = useStyles(stylesheet)
         return (
             <Animated.View style={[styles.boxesContainer, styles.boxes]}>
@@ -183,7 +183,7 @@ export default function OnboardingScreen(): JSX.Element {
         )
     }
 
-    const LegalArea = (): JSX.Element => {
+    const LegalArea = (): React.JSX.Element => {
         const legalAnimatedStyle = useAnimatedStyle(() => ({
             opacity: legalOpacity.value,
             transform: [{ translateY: legalTranslateY.value }],
diff --git a/src/app/(flow)/whatsnew.tsx b/src/app/(flow)/whatsnew.tsx
index 45d8fab9..cde9358a 100644
--- a/src/app/(flow)/whatsnew.tsx
+++ b/src/app/(flow)/whatsnew.tsx
@@ -22,7 +22,7 @@ import Animated, {
 } from 'react-native-reanimated'
 import { createStyleSheet, useStyles } from 'react-native-unistyles'
 
-export default function WhatsNewScreen(): JSX.Element {
+export default function WhatsNewScreen(): React.JSX.Element {
     const { styles } = useStyles(stylesheet)
     const changelog: Changelog = changelogData as Changelog
     const { t, i18n } = useTranslation('flow')
diff --git a/src/app/(screens)/about.tsx b/src/app/(screens)/about.tsx
index c448da37..917623ee 100644
--- a/src/app/(screens)/about.tsx
+++ b/src/app/(screens)/about.tsx
@@ -27,7 +27,7 @@ import {
 } from 'react-native'
 import { createStyleSheet, useStyles } from 'react-native-unistyles'
 
-export default function About(): JSX.Element {
+export default function About(): React.JSX.Element {
     const router = useRouter()
     const { styles } = useStyles(stylesheet)
     const { t } = useTranslation(['settings'])
@@ -97,17 +97,17 @@ export default function About(): JSX.Element {
                         web: 'Mail',
                     },
                     onPress: async () =>
-                        await Linking.openURL(
+                        (await Linking.openURL(
                             'mailto:app-feedback@informatik.sexy?subject=Feedback%20Neuland-Next'
-                        ),
+                        )) as Promise<void>,
                 },
                 {
                     title: 'App Website',
                     icon: linkIcon,
                     onPress: async () =>
-                        await Linking.openURL(
+                        (await Linking.openURL(
                             `https://next.neuland.app/${i18n.language === 'en' ? 'en/' : ''}`
-                        ),
+                        )) as Promise<void>,
                 },
                 {
                     title:
@@ -173,7 +173,7 @@ export default function About(): JSX.Element {
                     preset: 'done',
                 })
             }
-            const isCollected = unlockedAppIcons?.includes('cat')
+            const isCollected = unlockedAppIcons.includes('cat')
             if (!isCollected) {
                 trackEvent('EasterEgg', { easterEgg: 'aboutLogo' })
                 if (Platform.OS === 'ios') addUnlockedAppIcon('cat')
@@ -184,9 +184,7 @@ export default function About(): JSX.Element {
     }
     const [pressCount, setPressCount] = useState(0)
     const handleWebsitePress = (): void => {
-        Linking.openURL('https://neuland-ingolstadt.de/').catch((err) => {
-            console.error('Failed to open URL:', err)
-        })
+        void Linking.openURL('https://neuland-ingolstadt.de/')
     }
 
     const handleContributorsPress = (): void => {
@@ -194,9 +192,7 @@ export default function About(): JSX.Element {
             'https://next.neuland.app/' +
             (i18n.language === 'en' ? 'en/' : '') +
             'about/contributors'
-        Linking.openURL(url).catch((err) => {
-            console.error('Failed to open URL:', err)
-        })
+        void Linking.openURL(url)
     }
     return (
         <>
@@ -215,6 +211,7 @@ export default function About(): JSX.Element {
                         >
                             <View style={styles.logoIcon}>
                                 <Image
+                                    // eslint-disable-next-line @typescript-eslint/no-unsafe-assignment, @typescript-eslint/no-require-imports
                                     source={require('@/assets/appIcons/default.png')}
                                     alt="Neuland Next Logo"
                                     style={styles.logoImage}
diff --git a/src/app/(screens)/accent.tsx b/src/app/(screens)/accent.tsx
index 06887976..cd0e9fdf 100644
--- a/src/app/(screens)/accent.tsx
+++ b/src/app/(screens)/accent.tsx
@@ -13,7 +13,7 @@ import {
     useStyles,
 } from 'react-native-unistyles'
 
-export default function Theme(): JSX.Element {
+export default function Theme(): React.JSX.Element {
     const { styles } = useStyles(stylesheet)
 
     const accentColor = usePreferencesStore((state) => state.accentColor)
@@ -31,7 +31,7 @@ export default function Theme(): JSX.Element {
     }: {
         color: ColorBoxColor
         code: string
-    }): JSX.Element => {
+    }): React.JSX.Element => {
         const { styles } = useStyles(stylesheet)
         const themeAccentColor =
             UnistylesRuntime.themeName === 'dark' ? color.dark : color.light
@@ -99,7 +99,9 @@ export default function Theme(): JSX.Element {
         }[]
     }
 
-    const ColorBoxMatrix = ({ colors }: ColorBoxMatrixProps): JSX.Element => {
+    const ColorBoxMatrix = ({
+        colors,
+    }: ColorBoxMatrixProps): React.JSX.Element => {
         const { styles } = useStyles(stylesheet)
         return (
             <View style={styles.colorMatrixContainer}>
diff --git a/src/app/(screens)/appIcon.tsx b/src/app/(screens)/appIcon.tsx
index 53a27889..a9808e40 100644
--- a/src/app/(screens)/appIcon.tsx
+++ b/src/app/(screens)/appIcon.tsx
@@ -1,3 +1,6 @@
+/* eslint-disable @typescript-eslint/no-unsafe-assignment */
+
+/* eslint-disable @typescript-eslint/no-require-imports */
 import ErrorView from '@/components/Error/ErrorView'
 import Divider from '@/components/Universal/Divider'
 import PlatformIcon from '@/components/Universal/Icon'
@@ -35,7 +38,7 @@ iconImages = {
 
 export const appIcons = Object.keys(iconImages)
 
-export default function AppIconPicker(): JSX.Element {
+export default function AppIconPicker(): React.JSX.Element {
     const { styles } = useStyles(stylesheet)
     const unlockedAppIcons = usePreferencesStore(
         (state) => state.unlockedAppIcons
@@ -48,7 +51,7 @@ export default function AppIconPicker(): JSX.Element {
     }
 
     categories.exclusive = categories.exclusive.filter((icon) => {
-        if (unlockedAppIcons?.includes(icon)) {
+        if (unlockedAppIcons.includes(icon)) {
             return true
         } else {
             return false
diff --git a/src/app/(screens)/calendar.tsx b/src/app/(screens)/calendar.tsx
index abc8286f..2fa63a06 100644
--- a/src/app/(screens)/calendar.tsx
+++ b/src/app/(screens)/calendar.tsx
@@ -26,7 +26,7 @@ import {
 } from 'react-native'
 import { createStyleSheet, useStyles } from 'react-native-unistyles'
 
-export default function CalendarPage(): JSX.Element {
+export default function CalendarPage(): React.JSX.Element {
     const { userKind = USER_GUEST } = React.useContext(UserKindContext)
     const { styles } = useStyles(stylesheet)
     const { t } = useTranslation('common')
@@ -73,7 +73,7 @@ export default function CalendarPage(): JSX.Element {
     const scrollY = new Animated.Value(0)
     const pages = ['events', 'exams']
 
-    const CalendarFooter = (): JSX.Element => {
+    const CalendarFooter = (): React.JSX.Element => {
         return (
             <View style={styles.footerContainer}>
                 <Text style={styles.footerText1}>
diff --git a/src/app/(screens)/changelog.tsx b/src/app/(screens)/changelog.tsx
index 97a57702..09999376 100644
--- a/src/app/(screens)/changelog.tsx
+++ b/src/app/(screens)/changelog.tsx
@@ -8,7 +8,7 @@ import { useTranslation } from 'react-i18next'
 import { Linking, ScrollView, Text, View } from 'react-native'
 import { createStyleSheet, useStyles } from 'react-native-unistyles'
 
-export default function Theme(): JSX.Element {
+export default function Theme(): React.JSX.Element {
     const { styles } = useStyles(stylesheet)
     const changelog = changelogData as Changelog
     const { t, i18n } = useTranslation(['settings'])
diff --git a/src/app/(screens)/clEvent.tsx b/src/app/(screens)/clEvent.tsx
index 2da95571..ae70c155 100644
--- a/src/app/(screens)/clEvent.tsx
+++ b/src/app/(screens)/clEvent.tsx
@@ -3,7 +3,7 @@ import { linkIcon } from '@/components/Universal/Icon'
 import ShareHeaderButton from '@/components/Universal/ShareHeaderButton'
 import useCLParamsStore from '@/hooks/useCLParamsStore'
 import { type LanguageKey } from '@/localization/i18n'
-import { type FormListSections } from '@/types/components'
+import { type FormListSections, SectionGroup } from '@/types/components'
 import {
     formatFriendlyDateTime,
     formatFriendlyDateTimeRange,
@@ -15,7 +15,7 @@ import { useTranslation } from 'react-i18next'
 import { Linking, ScrollView, Share, Text, View } from 'react-native'
 import { createStyleSheet, useStyles } from 'react-native-unistyles'
 
-export default function ClEventDetail(): JSX.Element {
+export default function ClEventDetail(): React.JSX.Element {
     const { styles } = useStyles(stylesheet)
     const navigation = useNavigation()
     const clEvent = useCLParamsStore((state) => state.selectedClEvent)
@@ -23,7 +23,7 @@ export default function ClEventDetail(): JSX.Element {
     const { t, i18n } = useTranslation('common')
     const isMultiDayEvent =
         clEvent?.startDateTime != null &&
-        clEvent?.endDateTime != null &&
+        clEvent.endDateTime != null &&
         new Date(clEvent.startDateTime).toDateString() !==
             new Date(clEvent.endDateTime).toDateString()
 
@@ -71,32 +71,35 @@ export default function ClEventDetail(): JSX.Element {
                           },
                       ]
                     : [
-                          ...(clEvent?.startDateTime != null
+                          // eslint-disable-next-line @typescript-eslint/no-unnecessary-condition
+                          ...(clEvent.startDateTime != null
                               ? [
                                     {
                                         title: t('pages.event.begin'),
-                                        value: formatFriendlyDateTime(
-                                            new Date(clEvent.startDateTime)
-                                        ),
+                                        value:
+                                            formatFriendlyDateTime(
+                                                new Date(clEvent.startDateTime)
+                                            ) ?? undefined,
                                     },
                                 ]
                               : []),
-                          ...(clEvent?.endDateTime != null
+                          ...(clEvent.endDateTime != null
                               ? [
                                     {
                                         title: t('pages.event.end'),
-                                        value: formatFriendlyDateTime(
-                                            new Date(clEvent.endDateTime)
-                                        ),
+                                        value:
+                                            formatFriendlyDateTime(
+                                                new Date(clEvent.endDateTime)
+                                            ) ?? undefined,
                                     },
                                 ]
                               : []),
                       ]),
-                ...(clEvent?.location != null && clEvent?.location !== ''
+                ...(clEvent?.location != null && clEvent.location !== ''
                     ? [
                           {
                               title: t('pages.event.location'),
-                              value: clEvent?.location,
+                              value: clEvent.location,
                           },
                       ]
                     : []),
@@ -139,7 +142,7 @@ export default function ClEventDetail(): JSX.Element {
                                     },
                                 }
                               : null,
-                      ].filter((item) => item != null) as any,
+                      ].filter((item) => item != null) as SectionGroup[],
                   },
               ]
             : []),
@@ -147,7 +150,7 @@ export default function ClEventDetail(): JSX.Element {
             ? [
                   {
                       header: t('pages.event.description'),
-                      item: clEvent?.descriptions[i18n.language as LanguageKey],
+                      item: clEvent.descriptions[i18n.language as LanguageKey],
                   },
               ]
             : []),
@@ -168,7 +171,7 @@ export default function ClEventDetail(): JSX.Element {
                     adjustsFontSizeToFit={true}
                     numberOfLines={2}
                 >
-                    {clEvent?.titles[i18n.language as LanguageKey]}
+                    {clEvent.titles[i18n.language as LanguageKey]}
                 </Text>
             </View>
             <View style={styles.formList}>
diff --git a/src/app/(screens)/clEvents.tsx b/src/app/(screens)/clEvents.tsx
index 57038dba..26d317bc 100644
--- a/src/app/(screens)/clEvents.tsx
+++ b/src/app/(screens)/clEvents.tsx
@@ -14,7 +14,7 @@ import { useTranslation } from 'react-i18next'
 import { Animated, View, useWindowDimensions } from 'react-native'
 import { createStyleSheet, useStyles } from 'react-native-unistyles'
 
-export default function Events(): JSX.Element {
+export default function Events(): React.JSX.Element {
     const { t } = useTranslation('common')
     const { styles } = useStyles(stylesheet)
     const results = useQueries({
diff --git a/src/app/(screens)/dashboard.tsx b/src/app/(screens)/dashboard.tsx
index ba435784..7e1685f0 100644
--- a/src/app/(screens)/dashboard.tsx
+++ b/src/app/(screens)/dashboard.tsx
@@ -26,7 +26,7 @@ import { createStyleSheet, useStyles } from 'react-native-unistyles'
 
 const { width } = Dimensions.get('window')
 
-export default function DashboardEdit(): JSX.Element {
+export default function DashboardEdit(): React.JSX.Element {
     const childrenHeight = 48
 
     const {
@@ -47,7 +47,7 @@ export default function DashboardEdit(): JSX.Element {
         useState<Card[]>([])
 
     // add translation to shownDashboardEntries with new key transText
-    const transShownDashboardEntries = shownDashboardEntries?.map((item) => {
+    const transShownDashboardEntries = shownDashboardEntries.map((item) => {
         return {
             ...item,
             // @ts-expect-error cannot verify the type
@@ -80,13 +80,13 @@ export default function DashboardEdit(): JSX.Element {
         )
     }, [hiddenDashboardEntries, userKind, unavailableCards])
 
-    const renderItem = (params: ExtendedCard): JSX.Element => {
+    const renderItem = (params: ExtendedCard): React.JSX.Element => {
         const onPressDelete = (): void => {
             LayoutAnimation.configureNext(LayoutAnimation.Presets.easeInEaseOut)
             hideDashboardEntry(params.key)
         }
         const isLast =
-            shownDashboardEntries?.[shownDashboardEntries.length - 1].key ===
+            shownDashboardEntries[shownDashboardEntries.length - 1].key ===
             params.key
 
         return (
@@ -96,7 +96,7 @@ export default function DashboardEdit(): JSX.Element {
                 isLast={isLast}
                 isDragged={
                     draggedId !== null &&
-                    draggedId === transShownDashboardEntries?.indexOf(params)
+                    draggedId === transShownDashboardEntries.indexOf(params)
                 }
             />
         )
@@ -111,7 +111,7 @@ export default function DashboardEdit(): JSX.Element {
     )
 
     const handleReset = useCallback(() => {
-        resetOrder(userKind ?? 'guest')
+        resetOrder(userKind)
         LayoutAnimation.configureNext(LayoutAnimation.Presets.easeInEaseOut)
         if (Platform.OS === 'ios') {
             void Haptics.notificationAsync(
@@ -133,14 +133,14 @@ export default function DashboardEdit(): JSX.Element {
                 defaultHidden,
                 // eslint-disable-next-line @typescript-eslint/strict-boolean-expressions
                 hiddenDashboardEntries
-                    ?.filter(Boolean)
+                    .filter(Boolean)
                     .map((item) => item.key) || []
             ) &&
                 arraysEqual(
                     defaultShown,
                     // eslint-disable-next-line @typescript-eslint/strict-boolean-expressions
                     shownDashboardEntries
-                        ?.filter(Boolean)
+                        .filter(Boolean)
                         .map((item) => item.key) || []
                 )
         )
@@ -206,7 +206,7 @@ export default function DashboardEdit(): JSX.Element {
                             {t('dashboard.shown')}
                         </Text>
                         <View style={[styles.card, styles.shownBg]}>
-                            {shownDashboardEntries?.length === 0 ? (
+                            {shownDashboardEntries.length === 0 ? (
                                 <View
                                     style={{
                                         height: childrenHeight * 1.5,
@@ -221,7 +221,10 @@ export default function DashboardEdit(): JSX.Element {
                             ) : (
                                 <View style={styles.outer}>
                                     <DragSortableView
-                                        keyExtractor={(item) => item.key}
+                                        keyExtractor={(item) =>
+                                            // eslint-disable-next-line @typescript-eslint/no-unsafe-member-access
+                                            item.key as string
+                                        }
                                         dataSource={
                                             transShownDashboardEntries ?? []
                                         }
@@ -253,7 +256,7 @@ export default function DashboardEdit(): JSX.Element {
                                             })
                                         }}
                                         onDragging={(
-                                            _gestureState: any,
+                                            _gestureState: unknown,
                                             _left: number,
                                             _top: number,
                                             moveToIndex: number
@@ -325,20 +328,20 @@ export default function DashboardEdit(): JSX.Element {
                                                         ios={{
                                                             name: cardIcons[
                                                                 item.key as keyof typeof cardIcons
-                                                            ]?.ios,
+                                                            ].ios,
                                                             size: 17,
                                                         }}
                                                         android={{
                                                             name: cardIcons[
                                                                 item.key as keyof typeof cardIcons
-                                                            ]?.android,
+                                                            ].android,
                                                             size: 21,
                                                             variant: 'outlined',
                                                         }}
                                                         web={{
                                                             name: cardIcons[
                                                                 item.key as keyof typeof cardIcons
-                                                            ]?.web,
+                                                            ].web,
                                                             size: 21,
                                                         }}
                                                     />
@@ -430,7 +433,7 @@ function RowItem({
     onPressDelete,
     isLast,
     isDragged,
-}: RowItemProps): JSX.Element {
+}: RowItemProps): React.JSX.Element {
     const { styles, theme } = useStyles(stylesheet)
     const bottomWidth = isLast || isDragged ? 0 : 1
 
@@ -450,23 +453,21 @@ function RowItem({
                     ios={{
                         name: isDragged
                             ? 'line.3.horizontal'
-                            : cardIcons[item.key as keyof typeof cardIcons]
-                                  ?.ios,
+                            : cardIcons[item.key as keyof typeof cardIcons].ios,
                         size: 17,
                     }}
                     android={{
                         name: isDragged
                             ? 'drag_handle'
                             : cardIcons[item.key as keyof typeof cardIcons]
-                                  ?.android,
+                                  .android,
                         size: 21,
                         variant: 'outlined',
                     }}
                     web={{
                         name: isDragged
                             ? 'GripHorizontal'
-                            : cardIcons[item.key as keyof typeof cardIcons]
-                                  ?.web,
+                            : cardIcons[item.key as keyof typeof cardIcons].web,
                         size: 21,
                     }}
                 />
diff --git a/src/app/(screens)/exam.tsx b/src/app/(screens)/exam.tsx
index cff19dc9..6757a424 100644
--- a/src/app/(screens)/exam.tsx
+++ b/src/app/(screens)/exam.tsx
@@ -7,7 +7,7 @@ import { useTranslation } from 'react-i18next'
 import { ScrollView, Text, View } from 'react-native'
 import { createStyleSheet, useStyles } from 'react-native-unistyles'
 
-export default function ExamDetail(): JSX.Element {
+export default function ExamDetail(): React.JSX.Element {
     const { styles } = useStyles(stylesheet)
     const exam = useRouteParamsStore((state) => state.selectedExam)
     const { t } = useTranslation('common')
diff --git a/src/app/(screens)/foodAllergens.tsx b/src/app/(screens)/foodAllergens.tsx
index 86b83fa1..b5b60d91 100644
--- a/src/app/(screens)/foodAllergens.tsx
+++ b/src/app/(screens)/foodAllergens.tsx
@@ -2,7 +2,7 @@ import ItemsPickerScreen from '@/components/Food/ItemsPickerScreen'
 import WorkaroundStack from '@/components/Universal/WorkaroundStack'
 import React from 'react'
 
-export default function Screen(): JSX.Element {
+export default function Screen(): React.JSX.Element {
     return (
         <WorkaroundStack
             name={'Allergens'}
diff --git a/src/app/(screens)/foodFlags.tsx b/src/app/(screens)/foodFlags.tsx
index 8b6e779d..fe4f747b 100644
--- a/src/app/(screens)/foodFlags.tsx
+++ b/src/app/(screens)/foodFlags.tsx
@@ -2,7 +2,7 @@ import ItemsPickerScreen from '@/components/Food/ItemsPickerScreen'
 import WorkaroundStack from '@/components/Universal/WorkaroundStack'
 import React from 'react'
 
-export default function Screen(): JSX.Element {
+export default function Screen(): React.JSX.Element {
     return (
         <WorkaroundStack
             name={'Flags'}
diff --git a/src/app/(screens)/foodPreferences.tsx b/src/app/(screens)/foodPreferences.tsx
index bf74aef4..f462a334 100644
--- a/src/app/(screens)/foodPreferences.tsx
+++ b/src/app/(screens)/foodPreferences.tsx
@@ -14,7 +14,7 @@ import { useTranslation } from 'react-i18next'
 import { ScrollView, Text, View } from 'react-native'
 import { createStyleSheet, useStyles } from 'react-native-unistyles'
 
-export default function FoodPreferences(): JSX.Element {
+export default function FoodPreferences(): React.JSX.Element {
     const { t } = useTranslation('food')
     const elemtents = [
         {
diff --git a/src/app/(screens)/foodx.tsx b/src/app/(screens)/foodx.tsx
index 79aaef17..5a2673a7 100644
--- a/src/app/(screens)/foodx.tsx
+++ b/src/app/(screens)/foodx.tsx
@@ -6,7 +6,7 @@ import Head from 'expo-router/head'
 import React, { useEffect, useLayoutEffect, useState } from 'react'
 import { useTranslation } from 'react-i18next'
 
-export default function FoodRootScreen(): JSX.Element {
+export default function FoodRootScreen(): React.JSX.Element {
     const [isPageOpen, setIsPageOpen] = useState(false)
     const { t } = useTranslation('navigation')
     const navigation = useNavigation()
diff --git a/src/app/(screens)/grades.tsx b/src/app/(screens)/grades.tsx
index e5acea1c..ca184f02 100644
--- a/src/app/(screens)/grades.tsx
+++ b/src/app/(screens)/grades.tsx
@@ -30,7 +30,7 @@ import { createStyleSheet, useStyles } from 'react-native-unistyles'
 
 import packageInfo from '../../../package.json'
 
-export default function GradesSCreen(): JSX.Element {
+export default function GradesSCreen(): React.JSX.Element {
     const { t } = useTranslation('settings')
     const { styles } = useStyles(stylesheet)
     const [gradeAverage, setGradeAverage] = useState<GradeAverage>()
@@ -56,7 +56,7 @@ export default function GradesSCreen(): JSX.Element {
             } else {
                 throw new Error('Average grade is undefined or null')
             }
-        } catch (e: any) {
+        } catch {
             setAverageLoadingState(LoadingState.ERROR)
         }
     }
@@ -219,7 +219,7 @@ export default function GradesSCreen(): JSX.Element {
                             </SectionView>
                             <SectionView title={t('grades.finished')}>
                                 <React.Fragment>
-                                    {grades?.finished?.map((grade, index) => (
+                                    {grades.finished.map((grade, index) => (
                                         <React.Fragment key={index}>
                                             <GradesRow item={grade} />
                                             {index !==
@@ -235,7 +235,7 @@ export default function GradesSCreen(): JSX.Element {
                     {grades.missing.length !== 0 && (
                         <SectionView title={t('grades.open')}>
                             <React.Fragment>
-                                {grades?.missing?.map((grade, index) => (
+                                {grades.missing.map((grade, index) => (
                                     <React.Fragment key={index}>
                                         <GradesRow item={grade} />
                                         {index !==
diff --git a/src/app/(screens)/lecture.tsx b/src/app/(screens)/lecture.tsx
index 7bb7e463..a405804b 100644
--- a/src/app/(screens)/lecture.tsx
+++ b/src/app/(screens)/lecture.tsx
@@ -20,7 +20,7 @@ import { Pressable, ScrollView, Share, Text, View } from 'react-native'
 import { createStyleSheet, useStyles } from 'react-native-unistyles'
 import ViewShot, { captureRef } from 'react-native-view-shot'
 
-export default function TimetableDetails(): JSX.Element {
+export default function TimetableDetails(): React.JSX.Element {
     const router = useRouter()
     const navigation = useNavigation()
     const { styles } = useStyles(stylesheet)
diff --git a/src/app/(screens)/lecturer.tsx b/src/app/(screens)/lecturer.tsx
index 84a3cce8..44ac923a 100644
--- a/src/app/(screens)/lecturer.tsx
+++ b/src/app/(screens)/lecturer.tsx
@@ -7,7 +7,7 @@ import { useTranslation } from 'react-i18next'
 import { Linking, ScrollView, Text, View } from 'react-native'
 import { createStyleSheet, useStyles } from 'react-native-unistyles'
 
-export default function LecturerDetail(): JSX.Element {
+export default function LecturerDetail(): React.JSX.Element {
     const { styles, theme } = useStyles(stylesheet)
     const lecturer = useRouteParamsStore((state) => state.selectedLecturer)
     const { t } = useTranslation('common')
diff --git a/src/app/(screens)/lecturers.tsx b/src/app/(screens)/lecturers.tsx
index 36df014d..d95321af 100644
--- a/src/app/(screens)/lecturers.tsx
+++ b/src/app/(screens)/lecturers.tsx
@@ -46,7 +46,7 @@ import {
     useStyles,
 } from 'react-native-unistyles'
 
-export default function LecturersCard(): JSX.Element {
+export default function LecturersCard(): React.JSX.Element {
     const router = useRouter()
     const [filteredLecturers, setFilteredLecturers] = useState<
         NormalizedLecturer[]
@@ -273,7 +273,7 @@ export default function LecturersCard(): JSX.Element {
         error: Error | null
         isLoading: boolean
         isPersonal?: boolean
-    }): JSX.Element => {
+    }): React.JSX.Element => {
         return isPaused && !isSuccess ? (
             <View style={styles.viewHorizontal}>
                 <ErrorView
@@ -395,7 +395,7 @@ export default function LecturersCard(): JSX.Element {
         )
     }
 
-    const FilterSectionList = (): JSX.Element => {
+    const FilterSectionList = (): React.JSX.Element => {
         return allLecturersResult.isLoading ? (
             <View style={styles.viewHorizontal}>
                 <LoadingIndicator style={styles.loadingContainer} />
diff --git a/src/app/(screens)/legal.tsx b/src/app/(screens)/legal.tsx
index bad85519..c0bdd4d7 100644
--- a/src/app/(screens)/legal.tsx
+++ b/src/app/(screens)/legal.tsx
@@ -8,7 +8,7 @@ import { useTranslation } from 'react-i18next'
 import { Linking, ScrollView, View } from 'react-native'
 import { createStyleSheet, useStyles } from 'react-native-unistyles'
 
-export default function About(): JSX.Element {
+export default function About(): React.JSX.Element {
     const router = useRouter()
     const { styles } = useStyles(stylesheet)
     const { t, i18n } = useTranslation(['settings'])
@@ -20,12 +20,14 @@ export default function About(): JSX.Element {
                 {
                     title: t('legal.formlist.legal.privacy'),
                     icon: linkIcon,
-                    onPress: async () => await Linking.openURL(PRIVACY_URL),
+                    onPress: async () =>
+                        (await Linking.openURL(PRIVACY_URL)) as Promise<void>,
                 },
                 {
                     title: t('legal.formlist.legal.imprint'),
                     icon: linkIcon,
-                    onPress: async () => await Linking.openURL(IMPRINT_URL),
+                    onPress: async () =>
+                        (await Linking.openURL(IMPRINT_URL)) as Promise<void>,
                 },
                 {
                     title: t('navigation.licenses.title', { ns: 'navigation' }),
@@ -43,7 +45,9 @@ export default function About(): JSX.Element {
                     title: 'Neuland Ingolstadt e.V.',
                     icon: linkIcon,
                     onPress: async () =>
-                        await Linking.openURL('https://neuland-ingolstadt.de/'),
+                        (await Linking.openURL(
+                            'https://neuland-ingolstadt.de/'
+                        )) as Promise<void>,
                 },
                 {
                     title: t('legal.formlist.us.source'),
@@ -54,9 +58,9 @@ export default function About(): JSX.Element {
                     },
 
                     onPress: async () =>
-                        await Linking.openURL(
+                        (await Linking.openURL(
                             'https://github.com/neuland-ingolstadt/neuland.app-native'
-                        ),
+                        )) as Promise<void>,
                 },
                 {
                     title: t('legal.formlist.us.faq'),
@@ -67,9 +71,9 @@ export default function About(): JSX.Element {
                     },
 
                     onPress: async () =>
-                        await Linking.openURL(
+                        (await Linking.openURL(
                             `https://next.neuland.app/${i18n.language === 'en' ? 'en/' : ''}app/faq`
-                        ),
+                        )) as Promise<void>,
                 },
             ],
         },
diff --git a/src/app/(screens)/libraryCode.tsx b/src/app/(screens)/libraryCode.tsx
index 3a5ff51d..fadec932 100644
--- a/src/app/(screens)/libraryCode.tsx
+++ b/src/app/(screens)/libraryCode.tsx
@@ -20,7 +20,7 @@ import { useTranslation } from 'react-i18next'
 import { Dimensions, Platform, Pressable, Text, View } from 'react-native'
 import { createStyleSheet, useStyles } from 'react-native-unistyles'
 
-export default function LibraryCode(): JSX.Element {
+export default function LibraryCode(): React.JSX.Element {
     const { styles } = useStyles(stylesheet)
     const { t } = useTranslation('common')
     const { userKind = USER_GUEST } = useContext(UserKindContext)
@@ -63,6 +63,7 @@ export default function LibraryCode(): JSX.Element {
         if (Platform.OS === 'ios') {
             void (async () => {
                 const { status } = await Brightness.requestPermissionsAsync()
+                // eslint-disable-next-line @typescript-eslint/no-unsafe-enum-comparison
                 if (status === 'granted') {
                     const value = await Brightness.getSystemBrightnessAsync()
                     setBrightness(value)
@@ -107,7 +108,8 @@ export default function LibraryCode(): JSX.Element {
                 </View>
             ) : isError ? (
                 <ErrorView
-                    title={error?.message ?? t('error.title')}
+                    // eslint-disable-next-line @typescript-eslint/no-unnecessary-condition
+                    title={error.message ?? t('error.title')}
                     onRefresh={refetchByUser}
                     refreshing={isRefetchingByUser}
                 />
@@ -117,7 +119,7 @@ export default function LibraryCode(): JSX.Element {
                     onRefresh={refetchByUser}
                     refreshing={isRefetchingByUser}
                 />
-            ) : isSuccess && data?.bibnr !== null ? (
+            ) : isSuccess && data.bibnr !== null ? (
                 <View style={styles.container}>
                     <View>
                         <FormList sections={sections} />
@@ -133,7 +135,7 @@ export default function LibraryCode(): JSX.Element {
                     >
                         <Barcode
                             format="CODE39"
-                            value={data?.bibnr ?? ''}
+                            value={data.bibnr ?? ''}
                             maxWidth={Dimensions.get('window').width - 56}
                             width={5}
                             style={styles.barcodeStyle}
@@ -148,9 +150,9 @@ export default function LibraryCode(): JSX.Element {
             ) : (
                 <ErrorView
                     title={
-                        isError
+                        error?.message
                             ? // @ts-expect-error error is type never
-                              (error?.message ?? t('error.title'))
+                              ((error.message as string) ?? t('error.title'))
                             : t('error.title')
                     }
                     onRefresh={refetchByUser}
diff --git a/src/app/(screens)/license.tsx b/src/app/(screens)/license.tsx
index 5b854411..513d99c0 100644
--- a/src/app/(screens)/license.tsx
+++ b/src/app/(screens)/license.tsx
@@ -8,7 +8,7 @@ import { useTranslation } from 'react-i18next'
 import { Linking, ScrollView, Text, View } from 'react-native'
 import { createStyleSheet, useStyles } from 'react-native-unistyles'
 
-export default function License(): JSX.Element {
+export default function License(): React.JSX.Element {
     const { styles } = useStyles(stylesheet)
     const { t } = useTranslation(['settings'])
 
diff --git a/src/app/(screens)/licenses.tsx b/src/app/(screens)/licenses.tsx
index 377cd598..e2ec36a0 100644
--- a/src/app/(screens)/licenses.tsx
+++ b/src/app/(screens)/licenses.tsx
@@ -9,7 +9,7 @@ import { useTranslation } from 'react-i18next'
 import { Platform, ScrollView, Text, View } from 'react-native'
 import { createStyleSheet, useStyles } from 'react-native-unistyles'
 
-export default function Licenses(): JSX.Element {
+export default function Licenses(): React.JSX.Element {
     const router = useRouter()
     const { t } = useTranslation(['settings'])
     const { styles, theme } = useStyles(stylesheet)
@@ -43,7 +43,7 @@ export default function Licenses(): JSX.Element {
 
     const licensesStaticFiltered = Object.entries(licensesStatic)
         .filter(
-            ([_, license]) =>
+            ([, license]) =>
                 license.platform.includes(Platform.OS) ||
                 license.platform.includes('all')
         )
@@ -54,7 +54,7 @@ export default function Licenses(): JSX.Element {
     const licensesList = Object.entries(licensesCombined)
         .sort(([keyA], [keyB]) => keyA.localeCompare(keyB))
         // also sort by search
-        .filter(([key, value]) => {
+        .filter(([key]) => {
             if (localSearch === '') {
                 return true
             }
diff --git a/src/app/(screens)/login.tsx b/src/app/(screens)/login.tsx
index 1d63f9d6..ec7af0ba 100644
--- a/src/app/(screens)/login.tsx
+++ b/src/app/(screens)/login.tsx
@@ -1,6 +1,6 @@
 import Login from '@/components/Flow/Login'
 import React from 'react'
 
-export default function LoginScreen(): JSX.Element {
+export default function LoginScreen(): React.JSX.Element {
     return <Login />
 }
diff --git a/src/app/(screens)/meal.tsx b/src/app/(screens)/meal.tsx
index 0407956a..7a067447 100644
--- a/src/app/(screens)/meal.tsx
+++ b/src/app/(screens)/meal.tsx
@@ -31,7 +31,7 @@ import {
 } from 'react-native'
 import { createStyleSheet, useStyles } from 'react-native-unistyles'
 
-export default function FoodDetail(): JSX.Element {
+export default function FoodDetail(): React.JSX.Element {
     const meal = useRouteParamsStore((state) => state.selectedMeal)
     const { styles, theme } = useStyles(stylesheet)
 
diff --git a/src/app/(screens)/news.tsx b/src/app/(screens)/news.tsx
index 45758257..3e37b020 100644
--- a/src/app/(screens)/news.tsx
+++ b/src/app/(screens)/news.tsx
@@ -21,7 +21,7 @@ import {
 } from 'react-native'
 import { createStyleSheet, useStyles } from 'react-native-unistyles'
 
-export default function NewsScreen(): JSX.Element {
+export default function NewsScreen(): React.JSX.Element {
     const { styles } = useStyles(stylesheet)
     const { data, error, isLoading, isError, isPaused, isSuccess, refetch } =
         useQuery({
diff --git a/src/app/(screens)/profile.tsx b/src/app/(screens)/profile.tsx
index 44e8aee0..bf156775 100644
--- a/src/app/(screens)/profile.tsx
+++ b/src/app/(screens)/profile.tsx
@@ -31,7 +31,7 @@ import {
 } from 'react-native'
 import { createStyleSheet, useStyles } from 'react-native-unistyles'
 
-export default function Profile(): JSX.Element {
+export default function Profile(): React.JSX.Element {
     const router = useRouter()
     const { styles } = useStyles(stylesheet)
     const { toggleUserKind, userKind } = useContext(UserKindContext)
@@ -185,7 +185,7 @@ export default function Profile(): JSX.Element {
                         data?.pvers === 'k.A.'
                             ? t('misc.unknown', { ns: 'common' })
                             : data?.pvers,
-                    onPress: async () => {
+                    onPress: () => {
                         if (
                             data?.po_url !== undefined &&
                             data.po_url !== '' &&
@@ -203,7 +203,7 @@ export default function Profile(): JSX.Element {
                     title: t('profile.formlist.user.status'),
                     value:
                         data?.rue === '1'
-                            ? data?.rue_sem
+                            ? data.rue_sem
                             : t('profile.formlist.user.statusInactive'),
                 },
             ],
@@ -287,7 +287,7 @@ export default function Profile(): JSX.Element {
                     />
                 )}
                 {isSuccess &&
-                    (data?.mtknr !== undefined ? (
+                    (data.mtknr !== undefined ? (
                         <View style={styles.container}>
                             <FormList
                                 sections={sections}
diff --git a/src/app/(screens)/roomSearch.ios.tsx b/src/app/(screens)/roomSearch.ios.tsx
index 6f09a120..eb1a7092 100644
--- a/src/app/(screens)/roomSearch.ios.tsx
+++ b/src/app/(screens)/roomSearch.ios.tsx
@@ -45,7 +45,7 @@ const DURATIONS = [
 
 const ALL_BUILDINGS = [BUILDINGS_ALL, ...BUILDINGS]
 
-export default function AdvancedSearch(): JSX.Element {
+export default function AdvancedSearch(): React.JSX.Element {
     const { styles, theme } = useStyles(stylesheet)
     const router = useRouter()
     const { t } = useTranslation('common')
@@ -96,7 +96,7 @@ export default function AdvancedSearch(): JSX.Element {
     const [rooms, setRooms] = useState<AvailableRoom[] | null>(null)
 
     useEffect(() => {
-        const fetchRooms = async (): Promise<void> => {
+        const fetchRooms = (): void => {
             try {
                 const validateDate = new Date(date)
                 if (isNaN(validateDate.getTime())) {
@@ -106,7 +106,7 @@ export default function AdvancedSearch(): JSX.Element {
                     return
                 }
 
-                const rooms = await filterRooms(
+                const rooms = filterRooms(
                     data,
                     date,
                     time,
@@ -127,7 +127,7 @@ export default function AdvancedSearch(): JSX.Element {
 
         setFilterState(LoadingState.LOADING)
         setTimeout(() => {
-            void fetchRooms()
+            fetchRooms()
         })
     }, [date, time, building.value, duration.value, data])
 
@@ -230,6 +230,10 @@ export default function AdvancedSearch(): JSX.Element {
                                         name: 'update',
                                         size: 20,
                                     }}
+                                    web={{
+                                        name: 'Sparkles',
+                                        size: 20,
+                                    }}
                                 />
                                 <Text style={styles.adjustedTitle}>
                                     {t('pages.rooms.modified.title')}
diff --git a/src/app/(screens)/roomSearch.tsx b/src/app/(screens)/roomSearch.tsx
index af34fc22..1194a70e 100644
--- a/src/app/(screens)/roomSearch.tsx
+++ b/src/app/(screens)/roomSearch.tsx
@@ -44,7 +44,7 @@ const DURATIONS = [
 
 const ALL_BUILDINGS = [BUILDINGS_ALL, ...BUILDINGS]
 
-export default function AdvancedSearch(): JSX.Element {
+export default function AdvancedSearch(): React.React.JSX.Element {
     const { styles, theme } = useStyles(stylesheet)
     const router = useRouter()
     const { t } = useTranslation('common')
@@ -77,7 +77,7 @@ export default function AdvancedSearch(): JSX.Element {
     const [rooms, setRooms] = useState<AvailableRoom[] | null>(null)
 
     useEffect(() => {
-        const fetchRooms = async (): Promise<void> => {
+        const fetchRooms = (): void => {
             try {
                 const validateDate = new Date(date)
                 if (isNaN(validateDate.getTime())) {
@@ -86,13 +86,7 @@ export default function AdvancedSearch(): JSX.Element {
                 if (data === undefined) {
                     return
                 }
-                const rooms = await filterRooms(
-                    data,
-                    date,
-                    time,
-                    building,
-                    duration
-                )
+                const rooms = filterRooms(data, date, time, building, duration)
                 if (rooms == null) {
                     throw new Error('Error while filtering rooms')
                 } else {
@@ -107,7 +101,7 @@ export default function AdvancedSearch(): JSX.Element {
 
         setFilterState(LoadingState.LOADING)
         setTimeout(() => {
-            void fetchRooms()
+            fetchRooms()
         })
     }, [date, time, building, duration, data])
 
diff --git a/src/app/(screens)/settings.tsx b/src/app/(screens)/settings.tsx
index 0babe076..6bef7bb2 100644
--- a/src/app/(screens)/settings.tsx
+++ b/src/app/(screens)/settings.tsx
@@ -53,7 +53,7 @@ import Animated, {
 import { useSafeAreaInsets } from 'react-native-safe-area-context'
 import { createStyleSheet, useStyles } from 'react-native-unistyles'
 
-export default function Settings(): JSX.Element {
+export default function Settings(): React.JSX.Element {
     const { styles, theme } = useStyles(stylesheet)
     const { userKind = USER_GUEST } =
         useContext<UserKindContextType>(UserKindContext)
diff --git a/src/app/(screens)/sportsEvent.tsx b/src/app/(screens)/sportsEvent.tsx
index 0dfd25a8..3d9ecbdf 100644
--- a/src/app/(screens)/sportsEvent.tsx
+++ b/src/app/(screens)/sportsEvent.tsx
@@ -12,7 +12,7 @@ import { useTranslation } from 'react-i18next'
 import { Linking, ScrollView, Share, Text, View } from 'react-native'
 import { createStyleSheet, useStyles } from 'react-native-unistyles'
 
-export default function SportsEventDetail(): JSX.Element {
+export default function SportsEventDetail(): React.JSX.Element {
     const { styles, theme } = useStyles(stylesheet)
 
     const sportsEvent = useCLParamsStore((state) => state.selectedSportsEvent)
diff --git a/src/app/(screens)/theme.tsx b/src/app/(screens)/theme.tsx
index 7b591d86..1ece8607 100644
--- a/src/app/(screens)/theme.tsx
+++ b/src/app/(screens)/theme.tsx
@@ -4,7 +4,7 @@ import { usePreferencesStore } from '@/hooks/usePreferencesStore'
 import React from 'react'
 import { useTranslation } from 'react-i18next'
 
-export default function Theme(): JSX.Element {
+export default function Theme(): React.JSX.Element {
     const theme = usePreferencesStore((state) => state.theme)
     const setTheme = usePreferencesStore((state) => state.setTheme)
     const { t } = useTranslation(['settings'])
diff --git a/src/app/(screens)/webView.tsx b/src/app/(screens)/webView.tsx
index b47fb897..63049949 100644
--- a/src/app/(screens)/webView.tsx
+++ b/src/app/(screens)/webView.tsx
@@ -8,7 +8,7 @@ import sanitizeHtml from 'sanitize-html'
 
 const PADDING = 4
 
-export default function NotesDetails(): JSX.Element {
+export default function NotesDetails(): React.JSX.Element {
     const navigation = useNavigation()
     const { title, html } = useLocalSearchParams<{
         title: string
@@ -43,7 +43,7 @@ export default function NotesDetails(): JSX.Element {
             <WebView
                 source={{ html: styledHtml }}
                 scalesPageToFit
-                onLoadEnd={(e) => {
+                onLoadEnd={() => {
                     if (!loaded) {
                         setLoaded(true)
                     }
diff --git a/src/app/(screens)/webView.web.tsx b/src/app/(screens)/webView.web.tsx
index 1e636038..5112a096 100644
--- a/src/app/(screens)/webView.web.tsx
+++ b/src/app/(screens)/webView.web.tsx
@@ -2,7 +2,7 @@ import ErrorView from '@/components/Error/ErrorView'
 import React from 'react'
 import { useTranslation } from 'react-i18next'
 
-export default function NotesDetails(): JSX.Element {
+export default function NotesDetails(): React.JSX.Element {
     const { t } = useTranslation('timetable')
 
     return (
diff --git a/src/app/(tabs)/(index)/_layout.tsx b/src/app/(tabs)/(index)/_layout.tsx
index 18f1b607..570a307e 100644
--- a/src/app/(tabs)/(index)/_layout.tsx
+++ b/src/app/(tabs)/(index)/_layout.tsx
@@ -14,7 +14,7 @@ export const unstable_settings = {
     initialRouteName: '/',
 }
 
-export default function Layout(): JSX.Element {
+export default function Layout(): React.JSX.Element {
     const { styles } = useStyles(stylesheet)
     if (typeof window === 'undefined') return <Slot />
 
diff --git a/src/app/(tabs)/(index)/index.tsx b/src/app/(tabs)/(index)/index.tsx
index ec7dd59c..7317c7a7 100644
--- a/src/app/(tabs)/(index)/index.tsx
+++ b/src/app/(tabs)/(index)/index.tsx
@@ -15,7 +15,7 @@ import { useTranslation } from 'react-i18next'
 import { Dimensions, LayoutAnimation, View } from 'react-native'
 import { createStyleSheet, useStyles } from 'react-native-unistyles'
 
-export default function HomeRootScreen(): JSX.Element {
+export default function HomeRootScreen(): React.JSX.Element {
     const [isPageOpen, setIsPageOpen] = useState(false)
     useEffect(() => {
         setIsPageOpen(true)
@@ -44,7 +44,7 @@ export default function HomeRootScreen(): JSX.Element {
     )
 }
 
-function HomeScreen(): JSX.Element {
+function HomeScreen(): React.JSX.Element {
     const { styles, theme } = useStyles(stylesheet)
     const { shownDashboardEntries } = React.useContext(DashboardContext)
     const [orientation, setOrientation] = useState(
diff --git a/src/app/(tabs)/(index)/library.tsx b/src/app/(tabs)/(index)/library.tsx
index 7e2ce1d5..1766e653 100644
--- a/src/app/(tabs)/(index)/library.tsx
+++ b/src/app/(tabs)/(index)/library.tsx
@@ -7,7 +7,7 @@ import { useTranslation } from 'react-i18next'
 import { Linking, Text, View } from 'react-native'
 import { createStyleSheet, useStyles } from 'react-native-unistyles'
 
-export default function LibrarySreen(): JSX.Element {
+export default function LibrarySreen(): React.JSX.Element {
     const { styles } = useStyles(stylesheet)
     const { t } = useTranslation('common')
 
diff --git a/src/app/(tabs)/(index)/links.tsx b/src/app/(tabs)/(index)/links.tsx
index f98cc144..71d67bf3 100644
--- a/src/app/(tabs)/(index)/links.tsx
+++ b/src/app/(tabs)/(index)/links.tsx
@@ -11,7 +11,7 @@ import { useTranslation } from 'react-i18next'
 import { Linking, Text, View } from 'react-native'
 import { createStyleSheet, useStyles } from 'react-native-unistyles'
 
-const LinkScreen = (): JSX.Element => {
+const LinkScreen = (): React.JSX.Element => {
     const { styles } = useStyles(stylesheet)
     const { t } = useTranslation('common')
     const addRecentQuicklink = usePreferencesStore(
diff --git a/src/app/(tabs)/_layout.tsx b/src/app/(tabs)/_layout.tsx
index 19afbf72..3c549d4c 100644
--- a/src/app/(tabs)/_layout.tsx
+++ b/src/app/(tabs)/_layout.tsx
@@ -16,18 +16,27 @@ import React, { useContext, useEffect } from 'react'
 import { useTranslation } from 'react-i18next'
 import { Platform } from 'react-native'
 import { useMMKVBoolean, useMMKVString } from 'react-native-mmkv'
-// @ts-expect-error no types
+// @ts-expect-error no types available
 import Shortcuts, { type ShortcutItem } from 'rn-quick-actions'
 
 import { appIcons } from '../(screens)/appIcon'
 
+interface ShortcutsType {
+    onShortcutPressed: (callback: (item: ShortcutItem) => void) => {
+        remove: () => void
+    }
+    setShortcuts: (shortcuts: ShortcutItem[]) => void
+}
+
+const TypedShortcuts = Shortcuts as unknown as ShortcutsType
+
 declare const process: {
     env: {
         EXPO_PUBLIC_APTABASE_KEY: string
     }
 }
 
-export default function HomeLayout(): JSX.Element {
+export default function HomeLayout(): React.JSX.Element {
     const router = useRouter()
 
     const { t } = useTranslation('navigation')
@@ -79,7 +88,7 @@ export default function HomeLayout(): JSX.Element {
         if (allergens.length === 1 && allergens[0] === 'not-configured') {
             /* empty */
         } else {
-            allergens?.forEach((allergen: string) => {
+            allergens.forEach((allergen: string) => {
                 console.debug('Migrating allergen:', allergen)
                 toggleSelectedAllergens(allergen)
             })
@@ -161,14 +170,15 @@ export default function HomeLayout(): JSX.Element {
         ]
         function processShortcut(item: ShortcutItem): void {
             router.navigate({
+                // eslint-disable-next-line @typescript-eslint/no-unsafe-member-access
                 pathname: item.data.path as RelativePathString,
                 params: { fromAppShortcut: 'true' },
             })
         }
 
         const shortcutSubscription =
-            Shortcuts.onShortcutPressed(processShortcut)
-        Shortcuts.setShortcuts(shortcuts)
+            TypedShortcuts.onShortcutPressed(processShortcut)
+        TypedShortcuts.setShortcuts(shortcuts)
 
         return () => {
             if (shortcutSubscription != null) shortcutSubscription.remove()
diff --git a/src/app/(tabs)/food.tsx b/src/app/(tabs)/food.tsx
index 4fb6cf69..ab12fab0 100644
--- a/src/app/(tabs)/food.tsx
+++ b/src/app/(tabs)/food.tsx
@@ -7,7 +7,7 @@ import React, { useEffect, useLayoutEffect, useState } from 'react'
 import { useTranslation } from 'react-i18next'
 import { Platform } from 'react-native'
 
-export default function FoodRootScreen(): JSX.Element {
+export default function FoodRootScreen(): React.JSX.Element {
     const [isPageOpen, setIsPageOpen] = useState(false)
     const { t } = useTranslation('navigation')
     const navigation = useNavigation()
diff --git a/src/app/(tabs)/map.tsx b/src/app/(tabs)/map.tsx
index fb1884c3..d82c75ff 100644
--- a/src/app/(tabs)/map.tsx
+++ b/src/app/(tabs)/map.tsx
@@ -10,7 +10,7 @@ import { useTranslation } from 'react-i18next'
 import { View } from 'react-native'
 import { createStyleSheet, useStyles } from 'react-native-unistyles'
 
-export default function MapRootScreen(): JSX.Element {
+export default function MapRootScreen(): React.JSX.Element {
     const { t } = useTranslation(['navigation'])
     const { styles } = useStyles(stylesheet)
     const [isPageOpen, setIsPageOpen] = useState(false)
diff --git a/src/app/(tabs)/timetable.tsx b/src/app/(tabs)/timetable.tsx
index 5a1cae5d..b8530ace 100644
--- a/src/app/(tabs)/timetable.tsx
+++ b/src/app/(tabs)/timetable.tsx
@@ -5,7 +5,7 @@ import React from 'react'
 import { useTranslation } from 'react-i18next'
 import { Platform } from 'react-native'
 
-export default function FoodRootScreen(): JSX.Element {
+export default function FoodRootScreen(): React.JSX.Element {
     const { t } = useTranslation('navigation')
 
     if (Platform.OS === 'web') {
diff --git a/src/app/[...unmachted].tsx b/src/app/[...unmachted].tsx
index 6489abe8..63ab00c0 100644
--- a/src/app/[...unmachted].tsx
+++ b/src/app/[...unmachted].tsx
@@ -4,7 +4,7 @@ import { router, useNavigation, usePathname } from 'expo-router'
 import React, { useEffect, useLayoutEffect } from 'react'
 import { useTranslation } from 'react-i18next'
 
-export default function Unmatched(): JSX.Element {
+export default function Unmatched(): React.JSX.Element {
     const navigation = useNavigation()
     const cleanedPathname = usePathname().replace('/', '')
     const pathname =
diff --git a/src/app/_layout.tsx b/src/app/_layout.tsx
index 094ceb48..a9571ce6 100644
--- a/src/app/_layout.tsx
+++ b/src/app/_layout.tsx
@@ -30,7 +30,7 @@ export const unstable_settings = {
     initialRouteName: '/',
 }
 
-function RootLayout(): JSX.Element {
+function RootLayout(): React.JSX.Element {
     const { t } = useTranslation(['navigation'])
     const isPad = DeviceInfo.isTablet()
     const savedLanguage = usePreferencesStore((state) => state.language)
@@ -429,7 +429,7 @@ function RootLayout(): JSX.Element {
     )
 }
 
-const ProviderComponent = (): JSX.Element => {
+const ProviderComponent = (): React.JSX.Element => {
     return (
         <Try catch={CrashView}>
             <Provider>
diff --git a/src/app/index.tsx b/src/app/index.tsx
index c0c9660f..3602e3b6 100644
--- a/src/app/index.tsx
+++ b/src/app/index.tsx
@@ -3,7 +3,7 @@ import Head from 'expo-router/head'
 import React from 'react'
 import { StyleSheet, View, useColorScheme } from 'react-native'
 
-export default function App(): JSX.Element {
+export default function App(): React.JSX.Element {
     // This initial page is only used to redirect to the actual app
     // This helps to avoid weird layout issues on Android where the tab bar is not displayed correctly
     const colorScheme = useColorScheme()
diff --git a/src/components/Cards/BaseCard.tsx b/src/components/Cards/BaseCard.tsx
index bb31ee2b..65788798 100644
--- a/src/components/Cards/BaseCard.tsx
+++ b/src/components/Cards/BaseCard.tsx
@@ -63,24 +63,29 @@ const BaseCard: React.FC<BaseCardProps> = ({
             title={t('cards.titles.' + title)}
             actions={actions}
             onPress={(e) => {
-                e.nativeEvent.name === t('contextMenu.settings') &&
+                if (e.nativeEvent.name === t('contextMenu.settings')) {
                     router.navigate('/dashboard')
-                e.nativeEvent.name === t('contextMenu.hide') &&
+                }
+                if (e.nativeEvent.name === t('contextMenu.hide')) {
                     hideDashboardEntry(title)
-                e.nativeEvent.name === t('contextMenu.reset') &&
+                }
+                if (e.nativeEvent.name === t('contextMenu.reset')) {
                     resetOrder(userKind ?? 'guest')
+                }
             }}
             onPreviewPress={() => {
-                onPressRoute != null &&
+                if (onPressRoute != null) {
                     router.navigate(onPressRoute as RelativePathString)
+                }
             }}
             disabled={Platform.OS === 'android'}
         >
             <Pressable
                 disabled={onPressRoute == null}
                 onPress={() => {
-                    onPressRoute != null &&
+                    if (onPressRoute != null) {
                         router.navigate(onPressRoute as RelativePathString)
+                    }
                 }}
                 delayLongPress={300}
                 onLongPress={() => {
diff --git a/src/components/Cards/CalendarCard.tsx b/src/components/Cards/CalendarCard.tsx
index 4ea53a9f..53c46670 100644
--- a/src/components/Cards/CalendarCard.tsx
+++ b/src/components/Cards/CalendarCard.tsx
@@ -16,7 +16,7 @@ import { createStyleSheet, useStyles } from 'react-native-unistyles'
 
 import BaseCard from './BaseCard'
 
-const CalendarCard = (): JSX.Element => {
+const CalendarCard = (): React.JSX.Element => {
     type Combined = Calendar | CardExams
     const router = useRouter()
     const time = new Date()
diff --git a/src/components/Cards/EventsCard.tsx b/src/components/Cards/EventsCard.tsx
index 5e5c307a..076d3376 100644
--- a/src/components/Cards/EventsCard.tsx
+++ b/src/components/Cards/EventsCard.tsx
@@ -9,7 +9,7 @@ import { createStyleSheet, useStyles } from 'react-native-unistyles'
 
 import BaseCard from './BaseCard'
 
-const EventsCard = (): JSX.Element => {
+const EventsCard = (): React.JSX.Element => {
     const { styles, theme } = useStyles(stylesheet)
     const { t, i18n } = useTranslation('navigation')
 
diff --git a/src/components/Cards/FoodCard.tsx b/src/components/Cards/FoodCard.tsx
index d1213392..c10ab49d 100644
--- a/src/components/Cards/FoodCard.tsx
+++ b/src/components/Cards/FoodCard.tsx
@@ -19,7 +19,7 @@ import { createStyleSheet, useStyles } from 'react-native-unistyles'
 
 import BaseCard from './BaseCard'
 
-const FoodCard = (): JSX.Element => {
+const FoodCard = (): React.JSX.Element => {
     const { t, i18n } = useTranslation('food')
     const { styles, theme } = useStyles(stylesheet)
 
diff --git a/src/components/Cards/LinkCard.tsx b/src/components/Cards/LinkCard.tsx
index 6be39bad..6aefbc07 100644
--- a/src/components/Cards/LinkCard.tsx
+++ b/src/components/Cards/LinkCard.tsx
@@ -10,7 +10,7 @@ import { createStyleSheet, useStyles } from 'react-native-unistyles'
 import PlatformIcon, { type LucideIcon } from '../Universal/Icon'
 import BaseCard from './BaseCard'
 
-const LinkCard = (): JSX.Element => {
+const LinkCard = (): React.JSX.Element => {
     const { styles } = useStyles(stylesheet)
     const { t } = useTranslation('common')
 
diff --git a/src/components/Cards/LoginCard.tsx b/src/components/Cards/LoginCard.tsx
index 980fbc1a..682972e9 100644
--- a/src/components/Cards/LoginCard.tsx
+++ b/src/components/Cards/LoginCard.tsx
@@ -5,7 +5,7 @@ import { createStyleSheet, useStyles } from 'react-native-unistyles'
 
 import BaseCard from './BaseCard'
 
-const LoginCard = (): JSX.Element => {
+const LoginCard = (): React.JSX.Element => {
     const { styles } = useStyles(stylesheet)
     const { t } = useTranslation('navigation')
     return (
diff --git a/src/components/Cards/NewsCard.tsx b/src/components/Cards/NewsCard.tsx
index ff055d68..d0c1d429 100644
--- a/src/components/Cards/NewsCard.tsx
+++ b/src/components/Cards/NewsCard.tsx
@@ -54,7 +54,7 @@ const NewsCard: React.FC = () => {
         }
     }, [updateWidth])
 
-    const renderEvent = (event: ThiNews): JSX.Element => {
+    const renderEvent = (event: ThiNews): React.JSX.Element => {
         return (
             <Pressable
                 style={styles.eventContainer}
diff --git a/src/components/Cards/TimetableCard.tsx b/src/components/Cards/TimetableCard.tsx
index e34fcf2f..1e956fee 100644
--- a/src/components/Cards/TimetableCard.tsx
+++ b/src/components/Cards/TimetableCard.tsx
@@ -79,7 +79,7 @@ const TimetableCard: React.FC = () => {
         event: FriendlyTimetableEntry,
         index: number,
         currentTime: Date
-    ): JSX.Element => {
+    ): React.JSX.Element => {
         const isSoon =
             event.startDate > currentTime &&
             new Date(event.startDate) <=
diff --git a/src/components/Dashboard/HeaderRight.tsx b/src/components/Dashboard/HeaderRight.tsx
index 3c537f95..aec69bd9 100644
--- a/src/components/Dashboard/HeaderRight.tsx
+++ b/src/components/Dashboard/HeaderRight.tsx
@@ -20,7 +20,7 @@ import { createStyleSheet, useStyles } from 'react-native-unistyles'
 
 import LoadingIndicator from '../Universal/LoadingIndicator'
 
-export const IndexHeaderRight = (): JSX.Element => {
+export const IndexHeaderRight = (): React.JSX.Element => {
     const { t } = useTranslation(['navigation', 'settings'])
     const router = useRouter()
     const { styles, theme } = useStyles(stylesheet)
@@ -106,7 +106,7 @@ export const IndexHeaderRight = (): JSX.Element => {
         )
     }
 
-    const IconComponent = (): JSX.Element => {
+    const IconComponent = (): React.JSX.Element => {
         return (
             <PlatformMenu>
                 {userKind === USER_EMPLOYEE ? (
@@ -184,7 +184,7 @@ export const IndexHeaderRight = (): JSX.Element => {
         children,
     }: {
         children: JSX.Element
-    }): JSX.Element => {
+    }): React.JSX.Element => {
         return (
             <ContextMenu
                 disabled={getDeviceType() === 'Desktop'}
diff --git a/src/components/Error/ActionBox.tsx b/src/components/Error/ActionBox.tsx
index 6eb77c1d..a92f1e6f 100644
--- a/src/components/Error/ActionBox.tsx
+++ b/src/components/Error/ActionBox.tsx
@@ -11,7 +11,7 @@ export default function StatusBox({
 }: {
     error: Error
     crash: boolean
-}): JSX.Element {
+}): React.JSX.Element {
     const { styles } = useStyles(stylesheet)
     const { t } = useTranslation('common')
     return (
diff --git a/src/components/Error/ActionButtons.tsx b/src/components/Error/ActionButtons.tsx
index a2a202ec..8febf2c0 100644
--- a/src/components/Error/ActionButtons.tsx
+++ b/src/components/Error/ActionButtons.tsx
@@ -12,7 +12,7 @@ export const FeedbackButton = ({
 }: {
     error: Error
     crash: boolean
-}): JSX.Element => {
+}): React.JSX.Element => {
     const { t } = useTranslation('common')
     const { styles } = useStyles(stylesheet)
     const platform = Platform.OS
@@ -42,7 +42,7 @@ export const FeedbackButton = ({
     )
 }
 
-export const StatusButton = (): JSX.Element => {
+export const StatusButton = (): React.JSX.Element => {
     const { t } = useTranslation('common')
     const { styles } = useStyles(stylesheet)
 
diff --git a/src/components/Error/CrashView.tsx b/src/components/Error/CrashView.tsx
index 29280932..dd78faab 100644
--- a/src/components/Error/CrashView.tsx
+++ b/src/components/Error/CrashView.tsx
@@ -13,7 +13,7 @@ export const ErrorButton = ({
     onPress,
 }: {
     onPress: () => void
-}): JSX.Element => {
+}): React.JSX.Element => {
     const { t } = useTranslation('common')
     const { styles } = useStyles(stylesheet)
     return (
@@ -30,7 +30,7 @@ export const ErrorButton = ({
 export default function CrashView({
     error,
     retry,
-}: ErrorBoundaryProps): JSX.Element {
+}: ErrorBoundaryProps): React.JSX.Element {
     const { styles, theme } = useStyles(stylesheet)
     const { t } = useTranslation('common')
     const path = usePathname()
diff --git a/src/components/Error/ErrorView.tsx b/src/components/Error/ErrorView.tsx
index 46386fd1..e61bdb7e 100644
--- a/src/components/Error/ErrorView.tsx
+++ b/src/components/Error/ErrorView.tsx
@@ -44,7 +44,7 @@ export default function ErrorView({
     showPullLabel?: boolean
     inModal?: boolean
     isCritical?: boolean
-}): JSX.Element {
+}): React.JSX.Element {
     const { styles } = useStyles(stylesheet)
     const { t } = useTranslation('common')
     const path = usePathname()
@@ -122,7 +122,7 @@ export default function ErrorView({
         }
     }
 
-    const ErrorButton = (): JSX.Element => {
+    const ErrorButton = (): React.JSX.Element => {
         const buttonAction = (): void => {
             switch (title) {
                 case guestError:
@@ -153,7 +153,7 @@ export default function ErrorView({
         return (buttonProps != null || title === guestError) &&
             title !== permissionError ? (
             <Pressable
-                style={styles.logoutContainer(inModal ?? false)}
+                style={styles.logoutContainer(inModal)}
                 onPress={buttonProps?.onPress}
             >
                 <View style={styles.refreshButton}>
@@ -172,19 +172,15 @@ export default function ErrorView({
             refreshControl={
                 refreshing != null && title !== guestError ? (
                     <RefreshControl
-                        refreshing={refreshing ?? false}
-                        onRefresh={() => {
-                            if (onRefresh) {
-                                onRefresh().catch(console.error)
-                            }
-                        }}
+                        refreshing={refreshing}
+                        onRefresh={onRefresh}
                     />
                 ) : (
                     <></>
                 )
             }
             scrollEnabled={!inModal}
-            contentContainerStyle={styles.container(inModal ?? false)}
+            contentContainerStyle={styles.container(inModal)}
         >
             <View style={styles.errorContainer}>
                 <View style={styles.topContainer}>
diff --git a/src/components/Events/ClEventsPage.tsx b/src/components/Events/ClEventsPage.tsx
index 69b7dd93..764c0fd5 100644
--- a/src/components/Events/ClEventsPage.tsx
+++ b/src/components/Events/ClEventsPage.tsx
@@ -16,7 +16,7 @@ export default function ClEventsPage({
     clEventsResult,
 }: {
     clEventsResult: UseQueryResult<CampusLifeEventFieldsFragment[], Error>
-}): JSX.Element {
+}): React.JSX.Element {
     const { styles } = useStyles(stylesheet)
     const { t } = useTranslation('common')
 
diff --git a/src/components/Events/ClSportsPage.tsx b/src/components/Events/ClSportsPage.tsx
index 1cce796b..b7a1f3d9 100644
--- a/src/components/Events/ClSportsPage.tsx
+++ b/src/components/Events/ClSportsPage.tsx
@@ -39,7 +39,7 @@ export default function ClSportsPage({
         }[],
         Error
     >
-}): JSX.Element {
+}): React.JSX.Element {
     const { styles } = useStyles(stylesheet)
     const { userCampus } = useContext(UserKindContext)
     const [selectedLocation, setSelectedLocation] =
@@ -81,7 +81,7 @@ export default function ClSportsPage({
             title: WeekdayType
             data: UniversitySportsFieldsFragment[]
         }[]
-    }): JSX.Element => {
+    }): React.JSX.Element => {
         return (
             <View>
                 {data.map((section, index) => (
@@ -103,7 +103,7 @@ export default function ClSportsPage({
     }: {
         title: Lowercase<WeekdayType>
         data: UniversitySportsFieldsFragment[]
-    }): JSX.Element => {
+    }): React.JSX.Element => {
         const [collapsed, setCollapsed] = useState(false)
 
         return (
@@ -157,7 +157,7 @@ export default function ClSportsPage({
         location,
     }: {
         location: string
-    }): JSX.Element => {
+    }): React.JSX.Element => {
         const isSelected = selectedLocation === location
 
         return (
diff --git a/src/components/Flow/ContextMenu.web.tsx b/src/components/Flow/ContextMenu.web.tsx
index 31a5907b..992e010b 100644
--- a/src/components/Flow/ContextMenu.web.tsx
+++ b/src/components/Flow/ContextMenu.web.tsx
@@ -4,7 +4,7 @@ export default function ContextMenu({
     children,
 }: {
     children: JSX.Element[]
-}): JSX.Element {
+}): React.JSX.Element {
     // TODO hook right click and show actions there
     return <>{children}</>
 }
diff --git a/src/components/Flow/HomeBottomSheet.tsx b/src/components/Flow/HomeBottomSheet.tsx
index c28731b6..17bb5ee8 100644
--- a/src/components/Flow/HomeBottomSheet.tsx
+++ b/src/components/Flow/HomeBottomSheet.tsx
@@ -3,7 +3,7 @@ import React from 'react'
 import { Text, View } from 'react-native'
 import { createStyleSheet, useStyles } from 'react-native-unistyles'
 
-export const HomeBottomSheet = (): JSX.Element => {
+export const HomeBottomSheet = (): React.JSX.Element => {
     const { styles } = useStyles(stylesheet)
     return (
         <BottomSheetView style={styles.contentContainer}>
diff --git a/src/components/Flow/Login.tsx b/src/components/Flow/Login.tsx
index 60c52778..ae6dce06 100644
--- a/src/components/Flow/Login.tsx
+++ b/src/components/Flow/Login.tsx
@@ -41,7 +41,7 @@ const useIsFloatingKeyboard = (): boolean => {
     return floating
 }
 
-export default function Login(): JSX.Element {
+export default function Login(): React.JSX.Element {
     const { styles } = useStyles(stylesheet)
     const floatingKeyboard = useIsFloatingKeyboard()
     const { t } = useTranslation('flow')
diff --git a/src/components/Flow/Login.web.tsx b/src/components/Flow/Login.web.tsx
index 80ec0b8b..1d3619fb 100644
--- a/src/components/Flow/Login.web.tsx
+++ b/src/components/Flow/Login.web.tsx
@@ -11,7 +11,7 @@ import { createStyleSheet, useStyles } from 'react-native-unistyles'
 
 import LoginAnimatedText from './LoginAnimatedText'
 
-export default function Login(): JSX.Element {
+export default function Login(): React.JSX.Element {
     const { styles } = useStyles(stylesheet)
     const { t } = useTranslation('flow')
     const { fromOnboarding } = useLocalSearchParams<{
diff --git a/src/components/Flow/LoginAnimatedText.tsx b/src/components/Flow/LoginAnimatedText.tsx
index e2e52a31..819a789f 100644
--- a/src/components/Flow/LoginAnimatedText.tsx
+++ b/src/components/Flow/LoginAnimatedText.tsx
@@ -45,7 +45,7 @@ const textsDE = shuffleArray([
 ])
 const shouldVibrate = Platform.OS === 'ios'
 
-function LoginAnimatedText(): JSX.Element {
+function LoginAnimatedText(): React.JSX.Element {
     const { styles } = useStyles(stylesheet)
     const { t, i18n } = useTranslation('flow')
     const [currentTextIndex, setCurrentTextIndex] = useState(0)
diff --git a/src/components/Flow/OnboardingBox.tsx b/src/components/Flow/OnboardingBox.tsx
index bd44184b..bd29f67e 100644
--- a/src/components/Flow/OnboardingBox.tsx
+++ b/src/components/Flow/OnboardingBox.tsx
@@ -2,7 +2,7 @@ import React from 'react'
 import { Text, View } from 'react-native'
 import { createStyleSheet, useStyles } from 'react-native-unistyles'
 
-const OnboardingBox = ({ title }: { title: string }): JSX.Element => {
+const OnboardingBox = ({ title }: { title: string }): React.JSX.Element => {
     const { styles } = useStyles(stylesheet)
 
     return (
diff --git a/src/components/Flow/svgs/AnimatedLogoText.tsx b/src/components/Flow/svgs/AnimatedLogoText.tsx
index 99c712da..884cf0d7 100644
--- a/src/components/Flow/svgs/AnimatedLogoText.tsx
+++ b/src/components/Flow/svgs/AnimatedLogoText.tsx
@@ -9,7 +9,7 @@ const AnimatedLogoText = ({
 }: {
     dimensions: { logoWidth: number; logoHeight: number }
     speed: number
-}): JSX.Element => {
+}): React.JSX.Element => {
     const { theme } = useStyles()
 
     return (
diff --git a/src/components/Flow/svgs/AnimatedText.tsx b/src/components/Flow/svgs/AnimatedText.tsx
index cd8698a2..89e7fcdb 100644
--- a/src/components/Flow/svgs/AnimatedText.tsx
+++ b/src/components/Flow/svgs/AnimatedText.tsx
@@ -29,7 +29,7 @@ const AnimatedText = ({
     text: string
     textStyles: TextStyle
     disabled?: boolean
-}): JSX.Element => {
+}): React.JSX.Element => {
     const colorValue = useSharedValue(0)
     const { theme } = useStyles()
     useEffect(() => {
diff --git a/src/components/Flow/svgs/logo.tsx b/src/components/Flow/svgs/logo.tsx
index 3be232b5..c433bd20 100644
--- a/src/components/Flow/svgs/logo.tsx
+++ b/src/components/Flow/svgs/logo.tsx
@@ -2,7 +2,7 @@ import React from 'react'
 import { G, Path, Svg } from 'react-native-svg'
 import { useStyles } from 'react-native-unistyles'
 
-export default function LogoSVG({ size }: { size: number }): JSX.Element {
+export default function LogoSVG({ size }: { size: number }): React.JSX.Element {
     const { theme } = useStyles()
 
     return (
diff --git a/src/components/Flow/svgs/logoText.tsx b/src/components/Flow/svgs/logoText.tsx
index fbb296b4..ec37f2a6 100644
--- a/src/components/Flow/svgs/logoText.tsx
+++ b/src/components/Flow/svgs/logoText.tsx
@@ -7,7 +7,7 @@ export default function LogoTextSVG({
 }: {
     size: number
     color: string
-}): JSX.Element {
+}): React.JSX.Element {
     return (
         <Svg
             viewBox="0 0 151.5 13.64"
diff --git a/src/components/Flow/svgs/logoTextFull.tsx b/src/components/Flow/svgs/logoTextFull.tsx
index c1e1f355..9c9c9585 100644
--- a/src/components/Flow/svgs/logoTextFull.tsx
+++ b/src/components/Flow/svgs/logoTextFull.tsx
@@ -7,7 +7,7 @@ export default function LogoTextFullSVG({
 }: {
     size: number
     color: string
-}): JSX.Element {
+}): React.JSX.Element {
     return (
         <Svg
             fill={color}
diff --git a/src/components/Food/AllergensBanner.tsx b/src/components/Food/AllergensBanner.tsx
index b48705cd..2c0cfc79 100644
--- a/src/components/Food/AllergensBanner.tsx
+++ b/src/components/Food/AllergensBanner.tsx
@@ -12,7 +12,7 @@ export const AllergensBanner = ({
     scrollY,
 }: {
     scrollY: Animated.Value
-}): JSX.Element => {
+}): React.JSX.Element => {
     const { t } = useTranslation('common')
     const initAllergenSelection = useFoodFilterStore(
         (state) => state.initAllergenSelection
diff --git a/src/components/Food/FoodScreen.tsx b/src/components/Food/FoodScreen.tsx
index 77cfbca9..7f711fd7 100644
--- a/src/components/Food/FoodScreen.tsx
+++ b/src/components/Food/FoodScreen.tsx
@@ -26,7 +26,7 @@ import {
 import { SafeAreaProvider, SafeAreaView } from 'react-native-safe-area-context'
 import { createStyleSheet, useStyles } from 'react-native-unistyles'
 
-function FoodScreen(): JSX.Element {
+function FoodScreen(): React.JSX.Element {
     const { styles } = useStyles(stylesheet)
     const [selectedDay, setSelectedDay] = useState<number>(0)
     const selectedRestaurants = useFoodFilterStore(
@@ -97,7 +97,7 @@ function FoodScreen(): JSX.Element {
     }: {
         day: Food
         index: number
-    }): JSX.Element => {
+    }): React.JSX.Element => {
         const date = new Date(day.timestamp)
         const { styles } = useStyles(stylesheet)
 
@@ -166,9 +166,9 @@ function FoodScreen(): JSX.Element {
                 ) : isError ? (
                     <ErrorView
                         title={
-                            error?.message === 'noMeals'
+                            error.message === 'noMeals'
                                 ? t('error.noMeals')
-                                : (error?.message ?? t('error.title'))
+                                : (error.message ?? t('error.title'))
                         }
                         onRefresh={refetchByUser}
                         refreshing={isRefetchingByUser}
@@ -228,7 +228,7 @@ function FoodScreen(): JSX.Element {
                             scrollEnabled
                             overdrag
                         >
-                            {data.map((_: any, index: number) => (
+                            {data.map((_: unknown, index: number) => (
                                 <ScrollView
                                     refreshControl={
                                         <RefreshControl
diff --git a/src/components/Food/HeaderRight.tsx b/src/components/Food/HeaderRight.tsx
index d8b940b9..a6125949 100644
--- a/src/components/Food/HeaderRight.tsx
+++ b/src/components/Food/HeaderRight.tsx
@@ -6,7 +6,7 @@ import { createStyleSheet, useStyles } from 'react-native-unistyles'
 
 import PlatformIcon from '../Universal/Icon'
 
-export const FoodHeaderRight = (): JSX.Element => {
+export const FoodHeaderRight = (): React.JSX.Element => {
     const { t } = useTranslation(['accessibility'])
     const { styles } = useStyles(stylesheet)
     return (
diff --git a/src/components/Food/ItemsPickerScreen.tsx b/src/components/Food/ItemsPickerScreen.tsx
index d6066005..215f2918 100644
--- a/src/components/Food/ItemsPickerScreen.tsx
+++ b/src/components/Food/ItemsPickerScreen.tsx
@@ -20,7 +20,7 @@ import {
  */
 const ItemsPickerScreen = (params: {
     route: { params: { type: string } }
-}): JSX.Element => {
+}): React.JSX.Element => {
     const type = params.route.params.type
     const data = type === 'allergens' ? allergenMap : flapMap
     const placeholderKey =
diff --git a/src/components/Food/MealDay.tsx b/src/components/Food/MealDay.tsx
index acf05d49..a7b5295a 100644
--- a/src/components/Food/MealDay.tsx
+++ b/src/components/Food/MealDay.tsx
@@ -17,7 +17,7 @@ const MealGroup = ({
     group,
 }: {
     group: Record<string, Meal[]>
-}): JSX.Element => {
+}): React.JSX.Element => {
     return (
         <>
             {Object.entries(group).map(([key, value]) => (
@@ -39,7 +39,7 @@ const MealCategory = ({
 }: {
     category: string
     meals: Meal[]
-}): JSX.Element => {
+}): React.JSX.Element => {
     const [collapsed, setCollapsed] = useState(false)
 
     /**
@@ -106,7 +106,7 @@ export const MealDay = ({
 }: {
     day: Food
     index: number
-}): JSX.Element => {
+}): React.JSX.Element => {
     /**
      * Filters an array of meals by restaurant name.
      * @param meals - An array of meals.
@@ -159,6 +159,7 @@ export const MealDay = ({
         restaurantName: string
         meals: Meal[]
         groupedMeals: Record<string, Meal[]>
+        // eslint-disable-next-line @typescript-eslint/no-explicit-any
         styles: any
     }
 
@@ -174,10 +175,11 @@ export const MealDay = ({
         meals,
         groupedMeals,
         styles,
-    }: RestaurantProps): JSX.Element | null => {
+    }: RestaurantProps): React.JSX.Element | null => {
         if (meals.length > 0) {
             return (
                 <View>
+                    {/* eslint-disable-next-line @typescript-eslint/no-unsafe-assignment, @typescript-eslint/no-unsafe-member-access*/}
                     <Text style={styles.dayRestaurantTitles}>
                         {restaurantName}
                     </Text>
@@ -239,6 +241,7 @@ const stylesheet = createStyleSheet((theme) => ({
         fontSize: 15,
         fontWeight: '500',
     },
+    // eslint-disable-next-line react-native-unistyles/no-unused-styles
     dayRestaurantTitle: {
         color: theme.colors.text,
         fontSize: 18,
diff --git a/src/components/Food/MealEntry.tsx b/src/components/Food/MealEntry.tsx
index ca7528d2..4312b2a2 100644
--- a/src/components/Food/MealEntry.tsx
+++ b/src/components/Food/MealEntry.tsx
@@ -23,7 +23,7 @@ import { trackEvent } from '@aptabase/react-native'
 import Color from 'color'
 import { LinearGradient } from 'expo-linear-gradient'
 import { router } from 'expo-router'
-import React, { useContext, useEffect, useState } from 'react'
+import React, { useContext, useState } from 'react'
 import { useTranslation } from 'react-i18next'
 import { Platform, Pressable, Text, View } from 'react-native'
 import { createStyleSheet, useStyles } from 'react-native-unistyles'
@@ -40,7 +40,7 @@ export const MealEntry = ({
 }: {
     meal: Meal
     index: number
-}): JSX.Element => {
+}): React.JSX.Element => {
     const preferencesSelection = useFoodFilterStore(
         (state) => state.preferencesSelection
     )
@@ -101,13 +101,13 @@ export const MealEntry = ({
             mode="drag"
             scope="system"
             dragValue={t('details.share.message', {
-                meal: meal?.name[i18n.language as LanguageKey],
-                price: formatPrice(meal?.prices[userKind ?? 'guest']),
+                meal: meal.name[i18n.language as LanguageKey],
+                price: formatPrice(meal.prices[userKind ?? 'guest']),
                 location:
                     humanLocations[
                         meal.restaurant as keyof typeof humanLocations
                     ],
-                id: meal?.id,
+                id: meal.id,
             })}
         >
             <ContextMenu
@@ -175,7 +175,7 @@ export const MealEntry = ({
                                     i18n.language as LanguageKey
                                 )}
                             </Text>
-                            {meal.variants?.length > 0 && (
+                            {meal.variants.length > 0 && (
                                 <LinearGradient
                                     style={styles.variantContainer}
                                     colors={[
@@ -196,7 +196,7 @@ export const MealEntry = ({
                         <View style={styles.detailsContainer}>
                             <View style={styles.detailsColumns}>
                                 <View style={styles.flags}>
-                                    {userFlags?.map(
+                                    {userFlags.map(
                                         (flag: string, index: number) => (
                                             <LinearGradient
                                                 key={index}
diff --git a/src/components/Layout/PagerView.web.tsx b/src/components/Layout/PagerView.web.tsx
index 630a548e..cc27e00c 100644
--- a/src/components/Layout/PagerView.web.tsx
+++ b/src/components/Layout/PagerView.web.tsx
@@ -15,7 +15,7 @@ interface TabLayoutProps {
 const TabLayout = (
     { initialPage, onPageSelected, children }: TabLayoutProps,
     ref: Ref<{ setPage: (i: number) => void }>
-): JSX.Element => {
+): React.JSX.Element => {
     const [page, setPage] = useState<number>(initialPage)
 
     useImperativeHandle(
diff --git a/src/components/Layout/Tabbar.tsx b/src/components/Layout/Tabbar.tsx
index 46a9769f..3a6c20bc 100644
--- a/src/components/Layout/Tabbar.tsx
+++ b/src/components/Layout/Tabbar.tsx
@@ -1,3 +1,5 @@
+/* eslint-disable @typescript-eslint/no-require-imports */
+
 /* eslint-disable @typescript-eslint/no-unsafe-return */
 import Color from 'color'
 import React from 'react'
@@ -10,7 +12,7 @@ import { Tabs } from './NativeBottomTabs'
 
 export const useBottomTabBarHeight = _useBottomTabBarHeight
 
-export default function TabLayout(): JSX.Element {
+export default function TabLayout(): React.JSX.Element {
     const { theme } = useStyles()
     const { t } = useTranslation('navigation')
     const isAndroid = Platform.OS === 'android'
diff --git a/src/components/Layout/Tabbar.web.tsx b/src/components/Layout/Tabbar.web.tsx
index 6f99f6da..79a84754 100644
--- a/src/components/Layout/Tabbar.web.tsx
+++ b/src/components/Layout/Tabbar.web.tsx
@@ -9,7 +9,7 @@ export function useBottomTabBarHeight(): number {
     return 60
 }
 
-const DefaultTabs = (): JSX.Element => {
+const DefaultTabs = (): React.JSX.Element => {
     const { theme: styleTheme } = useStyles()
     const { t } = useTranslation('navigation')
     const isMobile = Dimensions.get('window').width < 900
diff --git a/src/components/Library/LibraryCard.tsx b/src/components/Library/LibraryCard.tsx
index a8007dbd..8d41a467 100644
--- a/src/components/Library/LibraryCard.tsx
+++ b/src/components/Library/LibraryCard.tsx
@@ -32,7 +32,7 @@ const LibraryCard = ({
     iconProps,
     title,
     description,
-}: LibraryCardProps): JSX.Element => {
+}: LibraryCardProps): React.JSX.Element => {
     const { styles, theme } = useStyles(stylesheet)
     return (
         <Pressable style={styles.pressable} onPress={onPress}>
diff --git a/src/components/Map/AvailableRoomsSuggestions.tsx b/src/components/Map/AvailableRoomsSuggestions.tsx
index ecc4e78c..f0d30a8f 100644
--- a/src/components/Map/AvailableRoomsSuggestions.tsx
+++ b/src/components/Map/AvailableRoomsSuggestions.tsx
@@ -6,6 +6,7 @@ import { getContrastColor, roomNotFoundToast } from '@/utils/ui-utils'
 import { trackEvent } from '@aptabase/react-native'
 import { router } from 'expo-router'
 import { type FeatureCollection } from 'geojson'
+import { type Position } from 'geojson'
 import React, { useContext } from 'react'
 import { useTranslation } from 'react-i18next'
 import { Pressable, Text, View } from 'react-native'
@@ -95,18 +96,20 @@ const AvailableRoomsSuggestions: React.FC<AvailableRoomsSuggestionsProps> = ({
                                         return
                                     }
 
-                                    const etage = details?.properties?.Ebene
+                                    const etage = details?.properties?.Ebene as
+                                        | string
+                                        | undefined
 
                                     setCurrentFloor({
-                                        floor: (etage as string) ?? 'EG',
+                                        floor: etage ?? 'EG',
                                         manual: false,
                                     })
                                     setClickedElement({
                                         data: room.room,
                                         type: SEARCH_TYPES.ROOM,
-                                        center:
-                                            details?.properties?.center ??
-                                            undefined,
+                                        center: details?.properties?.center as
+                                            | Position
+                                            | undefined,
                                         manual: false,
                                     })
                                     trackEvent('Room', {
diff --git a/src/components/Map/BottomSheetBackground.tsx b/src/components/Map/BottomSheetBackground.tsx
index 43be73f1..85739538 100644
--- a/src/components/Map/BottomSheetBackground.tsx
+++ b/src/components/Map/BottomSheetBackground.tsx
@@ -7,7 +7,7 @@ import {
     useStyles,
 } from 'react-native-unistyles'
 
-const BottomSheetBackground = (): JSX.Element => {
+const BottomSheetBackground = (): React.JSX.Element => {
     const { styles } = useStyles(stylesheet)
     const dark = UnistylesRuntime.themeName === 'dark'
     const darkIos = 'rgba(0, 0, 0, 0.45)'
diff --git a/src/components/Map/BottomSheetDetailModal.tsx b/src/components/Map/BottomSheetDetailModal.tsx
index a34f7f7a..fb0d6544 100644
--- a/src/components/Map/BottomSheetDetailModal.tsx
+++ b/src/components/Map/BottomSheetDetailModal.tsx
@@ -84,7 +84,7 @@ export const BottomSheetDetailModal = ({
     currentPositionModal,
     roomData,
     modalSection,
-}: BottomSheetDetailModalProps): JSX.Element => {
+}: BottomSheetDetailModalProps): React.JSX.Element => {
     const { styles } = useStyles(stylesheet)
     return (
         <BottomSheetModalProvider>
diff --git a/src/components/Map/BottomSheetMap.tsx b/src/components/Map/BottomSheetMap.tsx
index be6f782f..94086138 100644
--- a/src/components/Map/BottomSheetMap.tsx
+++ b/src/components/Map/BottomSheetMap.tsx
@@ -74,7 +74,9 @@ const MapBottomSheet: React.FC<MapBottomSheetProps> = ({
             keyboardBehavior="extend"
             onChange={(index) => {
                 if (index <= 1) {
-                    localSearch !== '' && setLocalSearch('')
+                    if (localSearch !== '') {
+                        setLocalSearch('')
+                    }
                     textInputRef.current?.blur()
                 }
             }}
diff --git a/src/components/Map/FloorPicker.tsx b/src/components/Map/FloorPicker.tsx
index db5d8258..076822df 100644
--- a/src/components/Map/FloorPicker.tsx
+++ b/src/components/Map/FloorPicker.tsx
@@ -22,7 +22,7 @@ const FloorPicker: React.FC<FloorPickerProps> = ({
     showAllFloors,
     toggleShowAllFloors,
     setCameraTriggerKey,
-}): JSX.Element => {
+}): React.JSX.Element => {
     const { styles } = useStyles(stylesheet)
     const { currentFloor, setCurrentFloor } = useContext(MapContext)
 
@@ -81,6 +81,10 @@ const FloorPicker: React.FC<FloorPickerProps> = ({
                                 name: 'cancel',
                                 size: 26,
                             }}
+                            web={{
+                                name: 'X',
+                                size: 26,
+                            }}
                             style={styles.xIcon}
                         />
                     </View>
@@ -145,6 +149,10 @@ const FloorPicker: React.FC<FloorPickerProps> = ({
                                     size: 21,
                                     variant: 'outlined',
                                 }}
+                                web={{
+                                    name: 'Navigation',
+                                    size: 21,
+                                }}
                             />
                         </View>
                     </View>
diff --git a/src/components/Map/MapScreen.tsx b/src/components/Map/MapScreen.tsx
index f721d7d8..6ed0efa5 100644
--- a/src/components/Map/MapScreen.tsx
+++ b/src/components/Map/MapScreen.tsx
@@ -42,13 +42,7 @@ import { ImageEntry } from '@maplibre/maplibre-react-native/lib/typescript/commo
 import { useQuery } from '@tanstack/react-query'
 import { toast } from 'burnt'
 import { router, useLocalSearchParams, useNavigation } from 'expo-router'
-import {
-    type Feature,
-    type FeatureCollection,
-    type GeoJsonProperties,
-    type Geometry,
-    type Position,
-} from 'geojson'
+import { type Feature, type FeatureCollection, type Position } from 'geojson'
 import React, {
     useCallback,
     useContext,
@@ -91,7 +85,7 @@ export function requestPermission(): void {
 
 const isIpadOS = Platform.OS === 'ios' && Platform.isPad
 
-const MapScreen = (): JSX.Element => {
+const MapScreen = (): React.JSX.Element => {
     const tabBarHeight = useBottomTabBarHeight()
     const navigation = useNavigation()
     const [mapLoadState, setMapLoadState] = useState(LoadingState.LOADING)
@@ -195,7 +189,7 @@ const MapScreen = (): JSX.Element => {
                 '"Time table does not exist" (-202)',
                 'Timetable is empty',
             ]
-            if (ignoreErrors.includes(error?.message)) {
+            if (ignoreErrors.includes(error.message)) {
                 return false
             }
             return failureCount < 2
@@ -297,7 +291,7 @@ const MapScreen = (): JSX.Element => {
             .flat()
         const buildings = BUILDINGS.map((building) => {
             const buildingRooms = rooms.filter(
-                (room) => room.properties.Gebaeude === building
+                (room) => room.properties.Gebaeude === (building as Gebaeude)
             )
             const floorCount = Array.from(
                 new Set(buildingRooms.map((room) => room.properties.Ebene))
@@ -405,7 +399,7 @@ const MapScreen = (): JSX.Element => {
     }, [userFaculty])
 
     useEffect(() => {
-        if (localSearch?.length === 1 && params.room != null) {
+        if (localSearch.length === 1 && params.room != null) {
             router.setParams(undefined)
         }
     }, [localSearch])
@@ -424,7 +418,7 @@ const MapScreen = (): JSX.Element => {
     })
 
     useEffect(() => {
-        async function load(): Promise<void> {
+        function load(): void {
             if (roomStatusData == null) {
                 console.debug('No room status data')
                 return
@@ -433,7 +427,7 @@ const MapScreen = (): JSX.Element => {
                 const dateObj = new Date()
                 const date = formatISODate(dateObj)
                 const time = formatISOTime(dateObj)
-                const rooms = await filterRooms(roomStatusData, date, time)
+                const rooms = filterRooms(roomStatusData, date, time)
                 setAvailableRooms(rooms)
             } catch (e) {
                 if (
@@ -447,7 +441,7 @@ const MapScreen = (): JSX.Element => {
             }
         }
         setAvailableRooms(null)
-        void load()
+        load()
     }, [userKind, roomStatusData])
 
     useEffect(() => {
@@ -462,7 +456,12 @@ const MapScreen = (): JSX.Element => {
                 ? allRooms.features
                 : Object.values(allRooms.features)
             )
-                .map((room: any) => room.properties?.Ebene?.toString())
+                .map((room) => {
+                    const properties = (room as RoomData).properties
+                    return typeof properties?.Ebene === 'string'
+                        ? properties.Ebene
+                        : ''
+                })
                 .filter((etage) => etage != null)
         )
     ).sort(
@@ -480,7 +479,7 @@ const MapScreen = (): JSX.Element => {
         // filter the filteredGeoJSON to only show available rooms
         const filterAvailableRooms = (
             rooms: FeatureCollection | undefined
-        ): Feature<Geometry, GeoJsonProperties>[] => {
+        ): Feature[] => {
             if (rooms == null) {
                 return []
             }
@@ -495,10 +494,7 @@ const MapScreen = (): JSX.Element => {
         }
         const filteredFeatures = filterAvailableRooms(filteredGeoJSON)
 
-        const availableFilteredGeoJSON: FeatureCollection<
-            Geometry,
-            GeoJsonProperties
-        > = {
+        const availableFilteredGeoJSON: FeatureCollection = {
             type: 'FeatureCollection',
             features: filteredFeatures,
         }
@@ -510,9 +506,7 @@ const MapScreen = (): JSX.Element => {
         if (mapOverlay == null) {
             return
         }
-        const filterEtage = (
-            etage: string
-        ): Feature<Geometry, GeoJsonProperties>[] => {
+        const filterEtage = (etage: string): Feature[] => {
             return allRooms.features.filter(
                 (feature) => feature.properties?.Ebene === etage
             )
@@ -520,7 +514,7 @@ const MapScreen = (): JSX.Element => {
 
         const filteredFeatures = filterEtage(currentFloor?.floor ?? 'EG')
 
-        const newGeoJSON: FeatureCollection<Geometry, GeoJsonProperties> = {
+        const newGeoJSON: FeatureCollection = {
             ...mapOverlay,
             features: filteredFeatures,
         }
@@ -552,19 +546,19 @@ const MapScreen = (): JSX.Element => {
         return roomData as RoomData
     }
 
-    const getBuildingData = (building: string): any => {
+    const getBuildingData = (building: string): RoomData => {
         const buildingDetails = allRooms.features.find(
             (x) =>
                 x.properties?.Gebaeude === building &&
-                x.properties?.rtype === SEARCH_TYPES.BUILDING
+                x.properties.rtype === SEARCH_TYPES.BUILDING
         )
-        const numberOfFreeRooms = availableRooms?.filter(
-            (x) => x.room[0] === building || x.room.slice(0, 1) === building
+        const numberOfFreeRooms = availableRooms?.filter((x) =>
+            x.room.startsWith(building)
         ).length
         const numberOfRooms = allRooms.features.filter(
             (x) =>
                 x.properties?.Gebaeude === building &&
-                x.properties?.rtype === SEARCH_TYPES.ROOM
+                x.properties.rtype === SEARCH_TYPES.ROOM
         ).length
         const buildingData = {
             title: building,
@@ -572,7 +566,7 @@ const MapScreen = (): JSX.Element => {
             properties: buildingDetails?.properties,
             occupancies: {
                 total: numberOfRooms,
-                available: numberOfFreeRooms,
+                available: numberOfFreeRooms ?? 0,
             },
             type: SEARCH_TYPES.BUILDING,
         }
@@ -589,9 +583,11 @@ const MapScreen = (): JSX.Element => {
             default:
                 return {
                     title: t('misc.unknown'),
+                    subtitle: t('misc.unknown'),
+                    type: SEARCH_TYPES.ROOM,
                     properties: null,
                     occupancies: null,
-                }
+                } as RoomData
         }
     }, [clickedElement])
 
@@ -774,7 +770,7 @@ const MapScreen = (): JSX.Element => {
                         images={{
                             // https://iconduck.com/icons/71717/map-marker - License: Creative Commons Zero v1.0 Universal
                             'map-marker':
-                                // eslint-disable-next-line @typescript-eslint/no-var-requires
+                                // eslint-disable-next-line @typescript-eslint/no-var-requires, @typescript-eslint/no-require-imports
                                 require('@/assets/map-marker.png') as ImageEntry,
                         }}
                     />
@@ -835,7 +831,8 @@ const MapScreen = (): JSX.Element => {
                             shape={filteredGeoJSON}
                             onPress={(e) => {
                                 setClickedElement({
-                                    data: e.features[0].properties?.Raum,
+                                    data: e.features[0].properties
+                                        ?.Raum as string,
                                     type: SEARCH_TYPES.ROOM,
                                     center: e.features[0].properties?.center as
                                         | Position
@@ -843,7 +840,8 @@ const MapScreen = (): JSX.Element => {
                                     manual: true,
                                 })
                                 trackEvent('Room', {
-                                    room: e.features[0].properties?.Raum,
+                                    room: e.features[0].properties
+                                        ?.Raum as string,
                                     origin: 'MapClick',
                                 })
                                 handlePresentModalPress()
diff --git a/src/components/Map/MapScreen.web.tsx b/src/components/Map/MapScreen.web.tsx
index 192efc6a..8d741fd8 100644
--- a/src/components/Map/MapScreen.web.tsx
+++ b/src/components/Map/MapScreen.web.tsx
@@ -2,7 +2,7 @@ import React from 'react'
 
 import ErrorView from '../Error/ErrorView'
 
-export default function MapScreen(): JSX.Element {
+export default function MapScreen(): React.JSX.Element {
     return (
         <ErrorView
             title="Map not available"
diff --git a/src/components/Map/ModalSections.ts b/src/components/Map/ModalSections.ts
index fb733b98..3ccaa3ac 100644
--- a/src/components/Map/ModalSections.ts
+++ b/src/components/Map/ModalSections.ts
@@ -1,3 +1,10 @@
+/* eslint-disable @typescript-eslint/no-unnecessary-condition */
+
+/* eslint-disable @typescript-eslint/no-unsafe-member-access */
+
+/* eslint-disable @typescript-eslint/no-unsafe-assignment */
+
+/* eslint-disable @typescript-eslint/no-explicit-any */
 import { type FormListSections } from '@/types/components'
 import {
     type BuildingOccupancy,
@@ -28,6 +35,7 @@ export const modalSection = (
     if (
         roomData.type === SEARCH_TYPES.ROOM &&
         ((roomData.occupancies !== null &&
+            // eslint-disable-next-line @typescript-eslint/no-unnecessary-condition
             roomData.occupancies !== undefined) ||
             (roomData.properties !== null && roomData.properties !== undefined))
     ) {
@@ -70,9 +78,9 @@ export const modalSection = (
                                                 )
                                                 const formattedMinutes =
                                                     minutes < 10
-                                                        ? `0${minutes}`
+                                                        ? `0${minutes.toString()}`
                                                         : minutes
-                                                return `${hours}:${formattedMinutes}h`
+                                                return `${hours.toString()}:${formattedMinutes.toString()}h`
                                             })(),
                                         },
                                         {
@@ -94,39 +102,41 @@ export const modalSection = (
                       {
                           header: t('pages.map.details.room.details'),
                           items: [
+                              // eslint-disable-next-line @typescript-eslint/no-unnecessary-condition
                               ...(occupancies != null
                                   ? [
                                         {
                                             title: t(
                                                 'pages.map.details.room.capacity'
                                             ),
-                                            value: `${occupancies.capacity} ${t('pages.rooms.options.seats')}`,
+                                            value: `${occupancies.capacity.toString()} ${t('pages.rooms.options.seats')}`,
                                         },
                                     ]
                                   : []),
                               {
                                   title: t('pages.map.details.room.building'),
                                   value:
-                                      roomData?.properties?.Gebaeude ??
+                                      roomData.properties?.Gebaeude ??
                                       t('misc.unknown'),
                               },
                               {
                                   title: t('pages.map.details.room.floor'),
                                   value:
-                                      roomData?.properties?.Ebene ??
+                                      roomData.properties?.Ebene ??
                                       t('misc.unknown'),
                               },
                               {
                                   title: t('pages.map.details.room.type'),
                                   value:
-                                      roomData?.properties?.[roomTypeKey] ??
+                                      roomData.properties?.[roomTypeKey] ??
                                       t('misc.unknown'),
                               },
                               {
                                   title: 'Campus',
                                   value:
                                       locations[
-                                          roomData?.properties?.Standort
+                                          // eslint-disable-next-line @typescript-eslint/no-unsafe-member-access
+                                          roomData.properties?.Standort
                                       ] ?? t('misc.unknown'),
                               },
                           ],
@@ -153,17 +163,18 @@ export const modalSection = (
                     {
                         title: t('pages.map.details.building.free'),
                         value:
-                            occupancies.available?.toString() ??
+                            occupancies.available.toString() ??
                             t('misc.unknown'),
                     },
                     {
                         title: t('pages.map.details.building.floors'),
                         value:
-                            properties?.Etage.toString() ?? t('misc.unknown'),
+                            (properties.Etage as string | null)?.toString() ??
+                            t('misc.unknown'),
                     },
                     {
                         title: 'Campus',
-                        value: locations?.[properties?.Standort],
+                        value: locations?.[properties.Standort],
                     },
                 ],
             },
diff --git a/src/components/Map/SearchHistory.tsx b/src/components/Map/SearchHistory.tsx
index 2a65922c..f3939968 100644
--- a/src/components/Map/SearchHistory.tsx
+++ b/src/components/Map/SearchHistory.tsx
@@ -77,6 +77,10 @@ const SearchHistory: React.FC<SearchHistoryProps> = ({
                                                 name: 'delete',
                                                 size: 24,
                                             }}
+                                            web={{
+                                                name: 'Trash',
+                                                size: 24,
+                                            }}
                                             style={styles.toast}
                                         />
                                     </Pressable>
diff --git a/src/components/Map/SearchResultRow.tsx b/src/components/Map/SearchResultRow.tsx
index 700e4079..1df882b8 100644
--- a/src/components/Map/SearchResultRow.tsx
+++ b/src/components/Map/SearchResultRow.tsx
@@ -1,8 +1,11 @@
+/* eslint-disable @typescript-eslint/no-unsafe-member-access */
 import { MapContext } from '@/contexts/map'
-import { type SearchResult } from '@/types/map'
+import { SEARCH_TYPES, type SearchResult } from '@/types/map'
+import { MaterialIcon } from '@/types/material-icons'
 import { getContrastColor } from '@/utils/ui-utils'
 import { trackEvent } from '@aptabase/react-native'
 import { TouchableOpacity } from '@gorhom/bottom-sheet'
+import { type Position } from 'geojson'
 import React, { useContext } from 'react'
 import { useTranslation } from 'react-i18next'
 import { Text, View } from 'react-native'
@@ -20,7 +23,7 @@ const ResultRow: React.FC<{
     index,
     handlePresentModalPress,
     updateSearchHistory,
-}): JSX.Element => {
+}): React.JSX.Element => {
     const { setClickedElement, setLocalSearch, setCurrentFloor } =
         useContext(MapContext)
     const { styles } = useStyles(stylesheet)
@@ -31,11 +34,13 @@ const ResultRow: React.FC<{
             key={index}
             style={styles.searchRowContainer}
             onPressOut={() => {
-                const center = result.item.properties?.center
+                const center = result.item.properties?.center as
+                    | Position
+                    | undefined
                 updateSearchHistory(result)
                 setClickedElement({
                     data: result.title,
-                    type: result.item.properties?.rtype,
+                    type: result.item.properties?.rtype as SEARCH_TYPES,
                     center,
                     manual: false,
                 })
@@ -54,14 +59,19 @@ const ResultRow: React.FC<{
             <View style={styles.searchIconContainer}>
                 <PlatformIcon
                     ios={{
-                        name: result.item.properties?.icon.ios,
+                        name: result.item.properties?.icon.ios as string,
                         size: 18,
                     }}
                     android={{
-                        name: result.item.properties?.icon.android,
+                        name: result.item.properties?.icon
+                            .android as MaterialIcon,
                         variant: 'outlined',
                         size: 21,
                     }}
+                    web={{
+                        name: 'MapPin',
+                        size: 21,
+                    }}
                     style={styles.icon}
                 />
             </View>
diff --git a/src/components/Map/SearchResuts.tsx b/src/components/Map/SearchResuts.tsx
index 653f873a..2b3dd7a0 100644
--- a/src/components/Map/SearchResuts.tsx
+++ b/src/components/Map/SearchResuts.tsx
@@ -70,12 +70,12 @@ const SearchResults: React.FC<SearchResultsProps> = ({
     const [searchResultsExact, searchResultsFuzzy] = useMemo(() => {
         const results = fuse.search(localSearch.trim().toUpperCase())
         const roomResults = results.map((result) => ({
-            title: result.item.properties?.Raum,
-            subtitle: result.item.properties?.Funktion_en,
+            title: result.item.properties?.Raum as string,
+            subtitle: result.item.properties?.Funktion_en as string,
             isExactMatch: Boolean(
-                result.item.properties?.Raum.toUpperCase().includes(
-                    localSearch.toUpperCase()
-                )
+                (result.item.properties?.Raum as string)
+                    .toUpperCase()
+                    .includes(localSearch.toUpperCase())
             ),
             item: result.item,
         }))
@@ -123,7 +123,7 @@ const SearchResults: React.FC<SearchResultsProps> = ({
                       ]
                     : []),
             ]}
-            keyExtractor={(item, index) => item.title + index}
+            keyExtractor={(item, index) => `${item.title}${index}`}
             renderItem={({ item, index }) => (
                 <ResultRow
                     result={item}
diff --git a/src/components/Rows/CalendarRow.tsx b/src/components/Rows/CalendarRow.tsx
index b6fa7856..bd0d6847 100644
--- a/src/components/Rows/CalendarRow.tsx
+++ b/src/components/Rows/CalendarRow.tsx
@@ -17,7 +17,7 @@ import { createStyleSheet, useStyles } from 'react-native-unistyles'
 
 import RowEntry from '../Universal/RowEntry'
 
-const CalendarRow = ({ event }: { event: Calendar }): JSX.Element => {
+const CalendarRow = ({ event }: { event: Calendar }): React.JSX.Element => {
     const { t, i18n } = useTranslation('common')
     const { styles } = useStyles(stylesheet)
     return (
@@ -55,7 +55,7 @@ const CalendarRow = ({ event }: { event: Calendar }): JSX.Element => {
     )
 }
 
-const ExamRow = ({ event }: { event: Exam }): JSX.Element => {
+const ExamRow = ({ event }: { event: Exam }): React.JSX.Element => {
     const setExam = useRouteParamsStore((state) => state.setSelectedExam)
     const { styles } = useStyles(stylesheet)
 
diff --git a/src/components/Rows/EventRow.tsx b/src/components/Rows/EventRow.tsx
index ab14d05c..c0510ed9 100644
--- a/src/components/Rows/EventRow.tsx
+++ b/src/components/Rows/EventRow.tsx
@@ -18,7 +18,7 @@ const CLEventRow = ({
     event,
 }: {
     event: CampusLifeEventFieldsFragment
-}): JSX.Element => {
+}): React.JSX.Element => {
     const { styles } = useStyles(stylesheet)
     const setSelectedClEvent = useCLParamsStore(
         (state) => state.setSelectedClEvent
diff --git a/src/components/Rows/GradesRow.tsx b/src/components/Rows/GradesRow.tsx
index 04ad996d..152bf136 100644
--- a/src/components/Rows/GradesRow.tsx
+++ b/src/components/Rows/GradesRow.tsx
@@ -6,7 +6,7 @@ import { createStyleSheet, useStyles } from 'react-native-unistyles'
 
 import RowEntry from '../Universal/RowEntry'
 
-const GradesRow = ({ item }: { item: Grade }): JSX.Element => {
+const GradesRow = ({ item }: { item: Grade }): React.JSX.Element => {
     const { styles } = useStyles(stylesheet)
     const { t } = useTranslation('settings')
     if (item.titel === null || item.titel === '') {
diff --git a/src/components/Rows/LecturerRow.tsx b/src/components/Rows/LecturerRow.tsx
index 4f557149..5786983e 100644
--- a/src/components/Rows/LecturerRow.tsx
+++ b/src/components/Rows/LecturerRow.tsx
@@ -8,7 +8,11 @@ import { createStyleSheet, useStyles } from 'react-native-unistyles'
 
 import RowEntry from '../Universal/RowEntry'
 
-const LecturerRow = ({ item }: { item: NormalizedLecturer }): JSX.Element => {
+const LecturerRow = ({
+    item,
+}: {
+    item: NormalizedLecturer
+}): React.JSX.Element => {
     const { styles, theme } = useStyles(stylesheet)
     const setSelectedLecturer = useRouteParamsStore(
         (state) => state.setSelectedLecturer
diff --git a/src/components/Rows/SportsRow.tsx b/src/components/Rows/SportsRow.tsx
index c69d75e1..03a672af 100644
--- a/src/components/Rows/SportsRow.tsx
+++ b/src/components/Rows/SportsRow.tsx
@@ -15,7 +15,7 @@ const SportsRow = ({
     event,
 }: {
     event: UniversitySportsFieldsFragment
-}): JSX.Element => {
+}): React.JSX.Element => {
     const { styles, theme } = useStyles(stylesheet)
     const setSelectedSportsEvent = useCLParamsStore(
         (state) => state.setSelectedSportsEvent
diff --git a/src/components/Settings/Avatar.tsx b/src/components/Settings/Avatar.tsx
index 14aca17f..fa6d08d9 100644
--- a/src/components/Settings/Avatar.tsx
+++ b/src/components/Settings/Avatar.tsx
@@ -17,7 +17,7 @@ const Avatar = ({
     size?: number
     background?: ColorValue
     children: JSX.Element
-}): JSX.Element => {
+}): React.JSX.Element => {
     const { styles } = useStyles(stylesheet)
 
     return <View style={styles.avatar(size, background)}>{children}</View>
diff --git a/src/components/Settings/GradesButton.tsx b/src/components/Settings/GradesButton.tsx
index 131c17e3..0bc3f4e5 100644
--- a/src/components/Settings/GradesButton.tsx
+++ b/src/components/Settings/GradesButton.tsx
@@ -6,7 +6,7 @@ import { createStyleSheet, useStyles } from 'react-native-unistyles'
 
 import PlatformIcon from '../Universal/Icon'
 
-const GradesButton = (): JSX.Element => {
+const GradesButton = (): React.JSX.Element => {
     const { t } = useTranslation('settings')
     const { styles } = useStyles(stylesheet)
     return (
diff --git a/src/components/Settings/NameBox.tsx b/src/components/Settings/NameBox.tsx
index e7daba3c..cfd3a5e7 100644
--- a/src/components/Settings/NameBox.tsx
+++ b/src/components/Settings/NameBox.tsx
@@ -24,7 +24,7 @@ const NameBox = ({
     title,
     subTitle1,
     subTitle2,
-}: NameBoxProps): JSX.Element => {
+}: NameBoxProps): React.JSX.Element => {
     const { styles } = useStyles(stylesheet)
 
     return (
diff --git a/src/components/Timetable/DetailsBody.tsx b/src/components/Timetable/DetailsBody.tsx
index 60154788..f361ae6e 100644
--- a/src/components/Timetable/DetailsBody.tsx
+++ b/src/components/Timetable/DetailsBody.tsx
@@ -4,8 +4,8 @@ import { StyleSheet, View } from 'react-native'
 export default function DetailsBody({
     children,
 }: {
-    children: JSX.Element | JSX.Element[]
-}): JSX.Element {
+    children: React.JSX.Element | JSX.Element[]
+}): React.JSX.Element {
     return <View style={styles.detailsBody}>{children}</View>
 }
 
diff --git a/src/components/Timetable/DetailsRow.tsx b/src/components/Timetable/DetailsRow.tsx
index 94356649..4d756864 100644
--- a/src/components/Timetable/DetailsRow.tsx
+++ b/src/components/Timetable/DetailsRow.tsx
@@ -5,7 +5,7 @@ export default function DetailsRow({
     children,
 }: {
     children: JSX.Element[]
-}): JSX.Element {
+}): React.JSX.Element {
     return <View style={styles.detailsRow}>{children}</View>
 }
 
diff --git a/src/components/Timetable/DetailsSymbol.tsx b/src/components/Timetable/DetailsSymbol.tsx
index b779b9e8..4f00bcc9 100644
--- a/src/components/Timetable/DetailsSymbol.tsx
+++ b/src/components/Timetable/DetailsSymbol.tsx
@@ -5,7 +5,7 @@ export default function DetailsSymbol({
     children,
 }: {
     children: JSX.Element
-}): JSX.Element {
+}): React.JSX.Element {
     return <View style={styles.detailsSymbol}>{children}</View>
 }
 
diff --git a/src/components/Timetable/HeaderButtons.tsx b/src/components/Timetable/HeaderButtons.tsx
index 358a9c81..59d87f3d 100644
--- a/src/components/Timetable/HeaderButtons.tsx
+++ b/src/components/Timetable/HeaderButtons.tsx
@@ -7,7 +7,7 @@ import { createStyleSheet, useStyles } from 'react-native-unistyles'
 
 import PlatformIcon from '../Universal/Icon'
 
-export function HeaderLeft(): JSX.Element {
+export function HeaderLeft(): React.JSX.Element {
     const { styles } = useStyles(stylesheet)
     const timetableMode = usePreferencesStore((state) => state.timetableMode)
     const setTimetableMode = usePreferencesStore(
@@ -57,7 +57,7 @@ interface HeaderRightProps {
     setToday: () => void
 }
 
-export function HeaderRight({ setToday }: HeaderRightProps): JSX.Element {
+export function HeaderRight({ setToday }: HeaderRightProps): React.JSX.Element {
     const { styles } = useStyles(stylesheet)
     const { t } = useTranslation(['accessibility'])
     return (
diff --git a/src/components/Timetable/Separator.tsx b/src/components/Timetable/Separator.tsx
index 11a341aa..aaba2cfa 100644
--- a/src/components/Timetable/Separator.tsx
+++ b/src/components/Timetable/Separator.tsx
@@ -2,7 +2,7 @@ import React from 'react'
 import { View } from 'react-native'
 import { createStyleSheet, useStyles } from 'react-native-unistyles'
 
-export default function Separator(): JSX.Element {
+export default function Separator(): React.JSX.Element {
     const { styles } = useStyles(stylesheet)
 
     return <View style={styles.separator} />
diff --git a/src/components/Timetable/ShareCard.tsx b/src/components/Timetable/ShareCard.tsx
index 19f491bc..62952906 100644
--- a/src/components/Timetable/ShareCard.tsx
+++ b/src/components/Timetable/ShareCard.tsx
@@ -17,7 +17,9 @@ interface ShareCardProps {
     event: FriendlyTimetableEntry
 }
 
-export default function ShareCard({ event }: ShareCardProps): JSX.Element {
+export default function ShareCard({
+    event,
+}: ShareCardProps): React.JSX.Element {
     const { styles } = useStyles(stylesheet)
 
     const { t } = useTranslation('timetable')
diff --git a/src/components/Timetable/TimetableList.tsx b/src/components/Timetable/TimetableList.tsx
index 003a2cd8..357c81c3 100644
--- a/src/components/Timetable/TimetableList.tsx
+++ b/src/components/Timetable/TimetableList.tsx
@@ -1,10 +1,15 @@
 import ErrorView from '@/components/Error/ErrorView'
-// @ts-expect-error no types
+// @ts-expect-error no types available
 import DragDropView from '@/components/Exclusive/DragView'
 import Divider from '@/components/Universal/Divider'
 import useRouteParamsStore from '@/hooks/useRouteParamsStore'
 import { type ITimetableViewProps } from '@/types/timetable'
-import { type Exam, type FriendlyTimetableEntry } from '@/types/utils'
+import {
+    type Exam,
+    ExamEntry,
+    type FriendlyTimetableEntry,
+    TimetableEntry,
+} from '@/types/utils'
 import {
     formatFriendlyDate,
     formatFriendlyDateTime,
@@ -34,7 +39,7 @@ export default function TimetableList({
     timetable,
     // eslint-disable-next-line react/prop-types
     exams,
-}: ITimetableViewProps): JSX.Element {
+}: ITimetableViewProps): React.JSX.Element {
     /**
      * Constants
      */
@@ -46,7 +51,7 @@ export default function TimetableList({
      */
     const router = useRouter()
     const navigation = useNavigation()
-    const listRef = useRef<SectionList<FriendlyTimetableEntry>>(null)
+    const listRef = useRef<SectionList<TimetableEntry | ExamEntry>>(null)
     const { t } = useTranslation('timetable')
     const { styles, theme } = useStyles(stylesheet)
     const setSelectedLecture = useRouteParamsStore(
@@ -74,10 +79,6 @@ export default function TimetableList({
         })
     }, [navigation])
 
-    /**
-     * Colors
-     */
-
     /**
      * Constants
      */
@@ -102,7 +103,7 @@ export default function TimetableList({
         router.navigate('/lecture')
     }
 
-    function renderSectionHeader(title: Date): JSX.Element {
+    function renderSectionHeader(title: Date): React.JSX.Element {
         const isToday = formatISODate(title) === formatISODate(today)
 
         return (
@@ -115,23 +116,23 @@ export default function TimetableList({
         )
     }
 
-    function renderSectionFooter(): JSX.Element {
+    function renderSectionFooter(): React.JSX.Element {
         return <View style={styles.sectionFooter} />
     }
 
-    function renderItemSeparator(): JSX.Element {
+    function renderItemSeparator(): React.JSX.Element {
         return <Divider color={theme.colors.border} iosPaddingLeft={16} />
     }
     function renderTimetableItem({
         item,
     }: {
         item: FriendlyTimetableEntry
-    }): JSX.Element {
+    }): React.JSX.Element {
         return (
             <DragDropView
                 mode="drag"
                 scope="system"
-                dragValue={`${item.name} in ${item.rooms?.join(
+                dragValue={`${item.name} in ${item.rooms.join(
                     ', '
                 )} (${formatFriendlyDateTime(
                     item.startDate
@@ -161,7 +162,7 @@ export default function TimetableList({
                             </Text>
                             <View style={styles.itemRow}>
                                 <Text style={styles.descriptionText}>
-                                    {item.rooms?.join(', ')}
+                                    {item.rooms.join(', ')}
                                 </Text>
                             </View>
                         </View>
@@ -178,7 +179,7 @@ export default function TimetableList({
             </DragDropView>
         )
     }
-    function renderExamItem({ exam }: { exam: Exam }): JSX.Element {
+    function renderExamItem({ exam }: { exam: Exam }): React.JSX.Element {
         const navigateToPage = (): void => {
             setSelectedExam(exam)
             router.navigate('/exam')
@@ -231,7 +232,11 @@ export default function TimetableList({
         )
     }
 
-    function renderItem({ item }: { item: any }): JSX.Element {
+    function renderItem({
+        item,
+    }: {
+        item: ExamEntry | TimetableEntry
+    }): React.JSX.Element {
         if (item.eventType === 'exam') {
             return renderExamItem({ exam: item })
         }
diff --git a/src/components/Timetable/TimetableScreen.tsx b/src/components/Timetable/TimetableScreen.tsx
index 338b44f4..9ff26e6b 100644
--- a/src/components/Timetable/TimetableScreen.tsx
+++ b/src/components/Timetable/TimetableScreen.tsx
@@ -25,7 +25,7 @@ export const loadTimetable = async (): Promise<FriendlyTimetableEntry[]> => {
     return timetable
 }
 
-function TimetableScreen(): JSX.Element {
+function TimetableScreen(): React.JSX.Element {
     const { styles } = useStyles(stylesheet)
 
     const timetableMode = usePreferencesStore((state) => state.timetableMode)
@@ -69,7 +69,7 @@ function TimetableScreen(): JSX.Element {
 
     const { isRefetchingByUser, refetchByUser } = useRefreshByUser(refetch)
 
-    const LoadingView = (): JSX.Element => {
+    const LoadingView = (): React.JSX.Element => {
         return (
             <View style={styles.loadingView}>
                 <LoadingIndicator />
diff --git a/src/components/Timetable/TimetableWeek.tsx b/src/components/Timetable/TimetableWeek.tsx
index 2279692a..632a298f 100644
--- a/src/components/Timetable/TimetableWeek.tsx
+++ b/src/components/Timetable/TimetableWeek.tsx
@@ -26,7 +26,7 @@ import EventComponent from './WeekEventComponent'
 
 export default function TimetableWeek({
     timetable,
-}: ITimetableViewProps): JSX.Element {
+}: ITimetableViewProps): React.JSX.Element {
     const { styles, theme } = useStyles(stylesheet)
     const today = moment().startOf('day').toDate()
     const firstElementeDate = timetable.find(
diff --git a/src/components/Timetable/WeekEventComponent.tsx b/src/components/Timetable/WeekEventComponent.tsx
index 304cd6a7..76f639db 100644
--- a/src/components/Timetable/WeekEventComponent.tsx
+++ b/src/components/Timetable/WeekEventComponent.tsx
@@ -1,3 +1,6 @@
+/* eslint-disable @typescript-eslint/no-unsafe-member-access */
+
+/* eslint-disable @typescript-eslint/no-unsafe-call */
 import { formatFriendlyTime } from '@/utils/date-utils'
 import { getContrastColor } from '@/utils/ui-utils'
 import { type PackedEvent } from '@howljs/calendar-kit'
@@ -20,7 +23,7 @@ const EventComponent = ({
     event: PackedEvent
     theme: UnistylesTheme
     isDark: boolean
-}): JSX.Element | null => {
+}): React.JSX.Element | null => {
     const { styles } = useStyles(stylesheet)
     if (
         event.start.dateTime === undefined ||
@@ -33,15 +36,15 @@ const EventComponent = ({
     const end = new Date(event.end.dateTime)
     const duration = end.getTime() - begin.getTime()
     const isOverflowing = duration < 1000 * 60 * 60
-    const nameParts = event.shortName?.split('_')?.slice(1)
+    const nameParts = event.shortName?.split('_')?.slice(1) as string[]
     const background = eventBackgroundColor(theme.colors.primary, isDark)
     const fontColor = textColor(theme.colors.primary, background, isDark)
-    const eventName = event.name ?? ''
+    const eventName = event.name as string
     const nameToDisplay =
         eventName.length > 20
             ? nameParts.join('_') !== ''
                 ? nameParts.join('_')
-                : event.shortName
+                : (event.shortName as string)
             : eventName
 
     return (
@@ -100,7 +103,7 @@ const EventComponent = ({
                                 color: fontColor,
                             }}
                         >
-                            {event.rooms?.join(', ')}
+                            {event.rooms?.join(', ') ?? ''}
                         </Text>
                     )}
                 </View>
@@ -152,7 +155,7 @@ const lineColor = (
               .hex()
         : eventBackgroundColor
 
-const stylesheet = createStyleSheet((theme) => ({
+const stylesheet = createStyleSheet(() => ({
     eventContainer: {
         borderRadius: 0,
         flex: 1,
diff --git a/src/components/Universal/BottomSheetRootBackground.tsx b/src/components/Universal/BottomSheetRootBackground.tsx
index 5fa38aa2..922062bd 100644
--- a/src/components/Universal/BottomSheetRootBackground.tsx
+++ b/src/components/Universal/BottomSheetRootBackground.tsx
@@ -11,7 +11,7 @@ import {
     useStyles,
 } from 'react-native-unistyles'
 
-export const BottomSheetRootBackground = (): JSX.Element => {
+export const BottomSheetRootBackground = (): React.JSX.Element => {
     const darkIos = 'rgba(39, 39, 39, 0.4)'
     const lightIos = 'rgba(255, 255, 255, 0.5)'
     const { styles } = useStyles(stylesheet)
@@ -38,7 +38,7 @@ export const BottomSheetRootBackground = (): JSX.Element => {
 
 export const renderBackdrop = (
     props: BottomSheetBackdropProps
-): JSX.Element => (
+): React.JSX.Element => (
     <BottomSheetBackdrop
         {...props}
         appearsOnIndex={0}
diff --git a/src/components/Universal/Icon.tsx b/src/components/Universal/Icon.tsx
index 2e958780..caeb0bdd 100644
--- a/src/components/Universal/Icon.tsx
+++ b/src/components/Universal/Icon.tsx
@@ -2,7 +2,7 @@ import { type MaterialIcon } from '@/types/material-icons'
 import MaterialCommunityIcons from '@expo/vector-icons/MaterialCommunityIcons'
 import { FileWarning, icons } from 'lucide-react-native'
 import React from 'react'
-import { Platform, Text } from 'react-native'
+import { Platform, Text, TextStyle, ViewStyle } from 'react-native'
 import { createStyleSheet, useStyles } from 'react-native-unistyles'
 import SweetSFSymbol from 'sweet-sfsymbols'
 import { type SystemName } from 'sweet-sfsymbols/build/SweetSFSymbols.types'
@@ -42,7 +42,7 @@ interface PlatformIconProps {
         name: LucideIcon
         size: number
     }
-    style?: any
+    style?: TextStyle
 }
 
 export const lucidErrorIcon = {
@@ -68,20 +68,20 @@ const PlatformIcon = ({
     ios,
     web,
     style,
-}: PlatformIconProps): JSX.Element => {
+}: PlatformIconProps): React.JSX.Element => {
     const { styles, theme } = useStyles(stylesheet)
 
     const lucidFallback = <FileWarning size={24} color={lucidErrorIcon.color} />
 
     if (Platform.OS === 'web') {
         if (web != null) {
-            const LucideIcon = icons[web?.name]
+            const LucideIcon = icons[web.name]
 
             return (
                 <LucideIcon
                     size={web.size}
                     color={style?.color ?? theme.colors.primary}
-                    style={style}
+                    style={style as ViewStyle}
                 />
             )
         } else {
@@ -90,9 +90,7 @@ const PlatformIcon = ({
     } else if (Platform.OS === 'ios') {
         return (ios.fallback ?? false) ? (
             <MaterialCommunityIcons
-                name={
-                    ios.name as typeof MaterialCommunityIcons.defaultProps.name
-                }
+                name={ios.name as keyof typeof MaterialCommunityIcons.glyphMap}
                 size={ios.size}
                 color={style?.color ?? theme.colors.primary}
                 style={{
@@ -113,8 +111,8 @@ const PlatformIcon = ({
                         : []),
                 ]}
                 weight={ios.weight ?? 'regular'}
-                style={style}
-                variant={ios.variant as any}
+                style={style as ViewStyle}
+                variant={ios.variant as never}
                 variableValue={ios.variableValue}
                 renderingMode={ios.renderMode}
             />
@@ -135,7 +133,9 @@ const PlatformIcon = ({
             >
                 {communityIcons.includes(android.name) ? (
                     <MaterialCommunityIcons
-                        name={android.name as any}
+                        name={
+                            android.name as keyof typeof MaterialCommunityIcons.glyphMap
+                        }
                         size={android.size}
                         color={style?.color ?? theme.colors.primary}
                         style={{ ...styles.communityIcon, ...style }}
@@ -154,7 +154,7 @@ const communityIcons: string[] = ['instagram', 'github']
 
 export type CommunityIcon = 'instagram' | 'github' | 'map-marker'
 
-const stylesheet = createStyleSheet((theme) => ({
+const stylesheet = createStyleSheet(() => ({
     androidIcon: {
         paddingTop: 3,
     },
diff --git a/src/components/Universal/LoadingIndicator.tsx b/src/components/Universal/LoadingIndicator.tsx
index 38d09c2f..036d91da 100644
--- a/src/components/Universal/LoadingIndicator.tsx
+++ b/src/components/Universal/LoadingIndicator.tsx
@@ -6,7 +6,9 @@ interface LoadingIndicatorProps {
     style?: ViewStyle
 }
 
-const LoadingIndicator = ({ style }: LoadingIndicatorProps): JSX.Element => {
+const LoadingIndicator = ({
+    style,
+}: LoadingIndicatorProps): React.JSX.Element => {
     const { theme } = useStyles()
     return (
         <ActivityIndicator
diff --git a/src/components/Universal/LoginForm.tsx b/src/components/Universal/LoginForm.tsx
index 62bace61..f7c94ab1 100644
--- a/src/components/Universal/LoginForm.tsx
+++ b/src/components/Universal/LoginForm.tsx
@@ -34,7 +34,7 @@ const LoginForm = ({
     navigateHome,
 }: {
     navigateHome: () => void
-}): JSX.Element => {
+}): React.JSX.Element => {
     const ORIGINAL_ERROR_WRONG_CREDENTIALS = 'Wrong credentials'
     const ORGINAL_ERROR_MISSING = 'Wrong or missing parameter'
     const KNOWN_BACKEND_ERRORS = ['Response is not valid JSON']
@@ -114,7 +114,9 @@ const LoginForm = ({
                                           ns: 'common',
                                       }),
                                       onPress: async () =>
-                                          await Linking.openURL(STATUS_URL),
+                                          (await Linking.openURL(
+                                              STATUS_URL
+                                          )) as Promise<void>,
                                   },
                               ]
                             : []),
@@ -146,7 +148,7 @@ const LoginForm = ({
     useEffect(() => {
         // on iOS secure store is synced with iCloud, so we can prefill the login form
         if (Platform.OS === 'ios') {
-            const loadSavedData = async (): Promise<void> => {
+            const loadSavedData = (): void => {
                 const savedUsername = loadSecure('username')
                 const savedPassword = loadSecure('password')
                 if (savedUsername !== null && savedPassword !== null) {
@@ -164,7 +166,7 @@ const LoginForm = ({
                 }
             }
 
-            void loadSavedData()
+            loadSavedData()
         }
     }, [])
 
@@ -217,7 +219,7 @@ const LoginForm = ({
                         }}
                         onSubmitEditing={() => {
                             if (username !== '') {
-                                login().catch((error: Error) => {
+                                login().catch((error: unknown) => {
                                     console.debug(error)
                                 })
                             }
@@ -235,7 +237,7 @@ const LoginForm = ({
                 <TouchableOpacity
                     disabled={signInDisabled}
                     onPress={() => {
-                        login().catch((error: Error) => {
+                        login().catch((error: unknown) => {
                             console.debug(error)
                         })
                     }}
@@ -255,7 +257,7 @@ const LoginForm = ({
                 <View style={styles.guestContainer}>
                     <TouchableOpacity
                         onPress={() => {
-                            guestLogin().catch((error: Error) => {
+                            guestLogin().catch((error: unknown) => {
                                 console.debug(error)
                             })
                         }}
diff --git a/src/components/Universal/RowEntry.tsx b/src/components/Universal/RowEntry.tsx
index aec9a6ee..bb258f18 100644
--- a/src/components/Universal/RowEntry.tsx
+++ b/src/components/Universal/RowEntry.tsx
@@ -19,7 +19,7 @@ const RowEntry = ({
     maxTitleWidth?: DimensionValue
     backgroundColor?: string
     icon?: JSX.Element
-}): JSX.Element => {
+}): React.JSX.Element => {
     const { styles } = useStyles(stylesheet)
     return (
         <Pressable onPress={onPress}>
diff --git a/src/components/Universal/SectionsView.tsx b/src/components/Universal/SectionsView.tsx
index 1fca0540..c7b39073 100644
--- a/src/components/Universal/SectionsView.tsx
+++ b/src/components/Universal/SectionsView.tsx
@@ -12,7 +12,7 @@ const SectionView = ({
     footer?: string
     children: JSX.Element
     link?: { text: string; destination: () => void }
-}): JSX.Element => {
+}): React.JSX.Element => {
     const { styles } = useStyles(stylesheet)
     return (
         <>
diff --git a/src/components/Universal/ShareButton.tsx b/src/components/Universal/ShareButton.tsx
index 2b03026c..418b99c7 100644
--- a/src/components/Universal/ShareButton.tsx
+++ b/src/components/Universal/ShareButton.tsx
@@ -11,7 +11,7 @@ interface ShareButtonProps {
 
 export default function ShareButton({
     onPress,
-}: ShareButtonProps): JSX.Element {
+}: ShareButtonProps): React.JSX.Element {
     const { styles } = useStyles(stylesheet)
     const { t } = useTranslation('common')
 
diff --git a/src/components/Universal/ShareHeaderButton.tsx b/src/components/Universal/ShareHeaderButton.tsx
index e28d22c7..d8322704 100644
--- a/src/components/Universal/ShareHeaderButton.tsx
+++ b/src/components/Universal/ShareHeaderButton.tsx
@@ -10,7 +10,7 @@ interface ShareButtonProps {
 
 export default function ShareHeaderButton({
     onPress,
-}: ShareButtonProps): JSX.Element {
+}: ShareButtonProps): React.JSX.Element {
     const { styles } = useStyles(stylesheet)
 
     return (
diff --git a/src/components/Universal/ToggleRow.tsx b/src/components/Universal/ToggleRow.tsx
index bb8ff3e0..0e638da9 100644
--- a/src/components/Universal/ToggleRow.tsx
+++ b/src/components/Universal/ToggleRow.tsx
@@ -10,7 +10,7 @@ const ToggleRow = ({
     items: string[]
     selectedElement: number
     setSelectedElement: (element: number) => void
-}): JSX.Element => {
+}): React.JSX.Element => {
     const { styles } = useStyles(stylesheet)
     return (
         <View style={styles.buttonRow}>
diff --git a/src/components/Universal/WorkaroundStack.tsx b/src/components/Universal/WorkaroundStack.tsx
index 1d4d1865..642e91ec 100644
--- a/src/components/Universal/WorkaroundStack.tsx
+++ b/src/components/Universal/WorkaroundStack.tsx
@@ -35,7 +35,7 @@ function WorkaroundStack({
     headerSearchBarOptions = undefined,
     params = {},
     androidFallback = false,
-}: WorkaroundStackProps): JSX.Element {
+}: WorkaroundStackProps): React.JSX.Element {
     const { t } = useTranslation('navigation')
     const Stack = createNativeStackNavigator()
     const StackAndroid = createStackNavigator()
diff --git a/src/components/contexts.ts b/src/components/contexts.ts
index c2235c30..0af2eb40 100644
--- a/src/components/contexts.ts
+++ b/src/components/contexts.ts
@@ -6,16 +6,28 @@ export const UserKindContext = createContext<UserKindContextType>({
     userKind: 'student',
     userFaculty: undefined,
     userCampus: undefined,
-    toggleUserKind: () => {},
+    toggleUserKind: () => {
+        throw new Error('toggleUserKind not implemented')
+    },
 })
 
 export const DashboardContext = createContext<Dashboard>({
     shownDashboardEntries: [],
     hiddenDashboardEntries: [],
-    hideDashboardEntry: () => {},
-    bringBackDashboardEntry: () => {},
-    resetOrder: () => {},
-    updateDashboardOrder: () => {},
+    hideDashboardEntry: () => {
+        throw new Error('hideDashboardEntry not implemented')
+    },
+    bringBackDashboardEntry: () => {
+        throw new Error('bringBackDashboardEntry not implemented')
+    },
+    resetOrder: () => {
+        throw new Error('resetOrder not implemented')
+    },
+    updateDashboardOrder: () => {
+        throw new Error('updateDashboardOrder not implemented')
+    },
     hiddenAnnouncements: [],
-    hideAnnouncement: () => {},
+    hideAnnouncement: () => {
+        throw new Error('hideAnnouncement not implemented')
+    },
 })
diff --git a/src/components/provider.tsx b/src/components/provider.tsx
index f076bd73..6c4ed62e 100644
--- a/src/components/provider.tsx
+++ b/src/components/provider.tsx
@@ -56,8 +56,7 @@ export const queryClient = new QueryClient({
  */
 export default function Provider({
     children,
-    ...rest
-}: ProviderProps): JSX.Element {
+}: ProviderProps): React.JSX.Element {
     const userKind = useUserKind()
     const dashboard = useDashboard()
     const segments = useSegments()
@@ -108,7 +107,7 @@ export default function Provider({
             return
         }
         trackEvent('Theme', {
-            theme: theme ?? 'auto',
+            theme: theme,
         })
     }, [accentColor, analyticsInitialized])
 
@@ -148,9 +147,10 @@ export default function Provider({
         }
 
         const entries: Record<string, string> = {}
-        dashboard.shownDashboardEntries?.forEach((entry, index) => {
+        dashboard.shownDashboardEntries.forEach((entry, index) => {
+            // eslint-disable-next-line @typescript-eslint/no-unnecessary-condition
             if (entry !== undefined) {
-                entries[entry.key] = `Position ${index + 1}`
+                entries[entry.key] = `Position ${(index + 1).toString()}`
             }
         })
 
@@ -166,7 +166,7 @@ export default function Provider({
 
         const entries: Record<string, string> = {}
 
-        dashboard.hiddenDashboardEntries?.forEach((entry) => {
+        dashboard.hiddenDashboardEntries.forEach((entry) => {
             if (entry !== undefined) {
                 entries[entry.key] = 'Card hidden'
             }
@@ -213,7 +213,7 @@ export default function Provider({
         try {
             const primary = accentColors[accentColor][scheme]
             return primary
-        } catch (e) {
+        } catch {
             return accentColors.blue[scheme]
         }
     }
@@ -238,7 +238,9 @@ export default function Provider({
     }, [accentColor])
 
     useEffect(() => {
-        const subscription = Appearance.addChangeListener(() => {})
+        const subscription = Appearance.addChangeListener(() => {
+            /* nothing to do here */
+        })
 
         const isFixedTheme = theme === 'dark' || theme === 'light'
         if (Platform.OS !== 'web') {
diff --git a/src/styles/unistyles.ts b/src/styles/unistyles.ts
index 0cb78c96..ede754f1 100644
--- a/src/styles/unistyles.ts
+++ b/src/styles/unistyles.ts
@@ -1,3 +1,5 @@
+/* eslint-disable @typescript-eslint/no-empty-object-type */
+
 /* eslint-disable @typescript-eslint/no-empty-interface */
 import { UnistylesRegistry } from 'react-native-unistyles'
 
diff --git a/src/types/map.ts b/src/types/map.ts
index 59cb3bad..5dca7175 100644
--- a/src/types/map.ts
+++ b/src/types/map.ts
@@ -1,9 +1,4 @@
-import {
-    type Feature,
-    type GeoJsonProperties,
-    type Geometry,
-    type Position,
-} from 'geojson'
+import { type Feature, type GeoJsonProperties, type Position } from 'geojson'
 
 import { type AvailableRoom } from './utils'
 
@@ -15,8 +10,8 @@ export enum SEARCH_TYPES {
 export interface RoomData {
     title: string
     subtitle: string
-    properties: GeoJsonProperties
-    occupancies: AvailableRoom | BuildingOccupancy
+    properties: GeoJsonProperties | undefined
+    occupancies: AvailableRoom | BuildingOccupancy | null
     type: SEARCH_TYPES
 }
 
@@ -35,5 +30,5 @@ export interface SearchResult {
     title: string
     subtitle: string
     isExactMatch?: boolean
-    item: Feature<Geometry, GeoJsonProperties>
+    item: Feature
 }
diff --git a/src/types/thi-api.ts b/src/types/thi-api.ts
index 031ee05f..7c3e0f2f 100644
--- a/src/types/thi-api.ts
+++ b/src/types/thi-api.ts
@@ -11,6 +11,10 @@ export interface Announcements {
     announcement: string
 }
 
+export interface TypeStunde extends Stunde {
+    type: Raumtyp
+}
+
 export interface SessionClose {
     date: string
     time: string
@@ -141,7 +145,14 @@ export interface Rooms {
 
 export interface Rtype {
     raumtyp: Raumtyp
-    stunden: Stunden
+    stunden: Stunde[]
+}
+
+export interface Stunde {
+    type: Raumtyp
+    raeume: [string, string, number, number][]
+    von: string
+    bis: string
 }
 
 export enum Raumtyp {
@@ -150,8 +161,6 @@ export enum Raumtyp {
     Seminarraum40Plätze = 'Seminarraum (< 40 Plätze)',
 }
 
-export type Stunden = Record<number, RoomsStatus[]>
-
 export interface RoomsStatus {
     von: Date
     bis: Date
diff --git a/src/types/utils.ts b/src/types/utils.ts
index 364777dd..10ed4565 100644
--- a/src/types/utils.ts
+++ b/src/types/utils.ts
@@ -12,6 +12,10 @@ export interface Exam {
     aids: string[]
 }
 
+export interface ExamEntry extends Exam {
+    eventType: 'exam'
+}
+
 export interface FriendlyDateOptions {
     weekday?: 'short' | 'long'
     relative?: boolean
@@ -74,6 +78,9 @@ export interface FriendlyTimetableEntry {
     literature: string | null
 }
 
+export interface TimetableEntry extends FriendlyTimetableEntry {
+    eventType: 'timetable'
+}
 export interface CalendarTimetableEntry extends FriendlyTimetableEntry {
     eventType: string
     color: string
@@ -92,7 +99,7 @@ export interface ExamTimetableEntry extends Exam {
 
 export interface TimetableSections {
     title: Date
-    data: FriendlyTimetableEntry[] | Exam[]
+    data: TimetableEntry[] | ExamEntry[]
 }
 
 export interface CalendarEvent {
diff --git a/src/utils/animation-utils.ts b/src/utils/animation-utils.ts
index 7955ea68..b9a9cdfc 100644
--- a/src/utils/animation-utils.ts
+++ b/src/utils/animation-utils.ts
@@ -35,7 +35,10 @@ export function withBouncing(
     bottomBound: number,
     topBound: number,
     randomizeColor: () => void
-): { onFrame: (state: AnimationState, now: number) => boolean; onStart: (state: AnimationState, _value: number, now: number) => void } {
+): {
+    onFrame: (state: AnimationState, now: number) => boolean
+    onStart: (state: AnimationState, _value: number, now: number) => void
+} {
     'worklet'
     return defineAnimation(
         {
@@ -43,7 +46,14 @@ export function withBouncing(
             lastTimestamp: Date.now(),
             direction: 1,
         },
-        (): { onFrame: (state: AnimationState, now: number) => boolean; onStart: (state: AnimationState, _value: number, now: number) => void } => {
+        (): {
+            onFrame: (state: AnimationState, now: number) => boolean
+            onStart: (
+                state: AnimationState,
+                _value: number,
+                now: number
+            ) => void
+        } => {
             'worklet'
             const onFrame = (state: AnimationState, now: number): boolean => {
                 const delta = (now - state.lastTimestamp) / 1000
diff --git a/src/utils/app-utils.ts b/src/utils/app-utils.ts
index 113e2fed..14e1800f 100644
--- a/src/utils/app-utils.ts
+++ b/src/utils/app-utils.ts
@@ -1,4 +1,5 @@
 import {
+    SecurityLevel,
     authenticateAsync,
     getEnrolledLevelAsync,
 } from 'expo-local-authentication'
@@ -37,7 +38,7 @@ export function lowercaseFirstLetter(string: string): string {
  * @param arr2 - The second array.
  * @returns A boolean indicating whether the arrays are equal.
  */
-export function arraysEqual(arr1: any[], arr2: any[]): boolean {
+export function arraysEqual(arr1: unknown[], arr2: unknown[]): boolean {
     if (arr1.length !== arr2.length) return false
     for (let i = 0; i < arr1.length; i++) {
         if (arr1[i] !== arr2[i]) return false
@@ -51,7 +52,7 @@ export function arraysEqual(arr1: any[], arr2: any[]): boolean {
  */
 export const handleBiometricAuth = async (path: string): Promise<void> => {
     const securityLevel = await getEnrolledLevelAsync()
-    if (securityLevel === 0) {
+    if (securityLevel === SecurityLevel.NONE) {
         // no passcode or biometric auth set up
         router.navigate(path as RelativePathString)
         return
diff --git a/src/utils/date-utils.ts b/src/utils/date-utils.ts
index e2846e5b..c755dedc 100644
--- a/src/utils/date-utils.ts
+++ b/src/utils/date-utils.ts
@@ -1,8 +1,10 @@
+/* eslint-disable @typescript-eslint/no-unsafe-return */
 import i18n from '@/localization/i18n'
 import { type FriendlyDateOptions } from '@/types/utils'
 import moment from 'moment'
 import 'moment/locale/de'
 
+// eslint-disable-next-line @typescript-eslint/no-explicit-any
 function t(...args: any): any {
     // eslint-disable-next-line @typescript-eslint/no-unsafe-argument
     return i18n.t(args, { ns: 'common' })
@@ -204,7 +206,7 @@ export function formatRelativeMinutes(datetime: Date | string): string {
         Math.floor((datetime.getTime() - Date.now()) / 60000),
         0
     )
-    return `${minutes} min`
+    return `${minutes.toString()} min`
 }
 
 /**
diff --git a/src/utils/food-utils.ts b/src/utils/food-utils.ts
index 590ba565..70e80831 100644
--- a/src/utils/food-utils.ts
+++ b/src/utils/food-utils.ts
@@ -47,6 +47,7 @@ export async function loadFoodEntries(
     const isoDates = days.map((x) => formatISODate(x))
     return isoDates.map((day) => {
         const dayEntries: Meal[] = data.flatMap(
+            // eslint-disable-next-line @typescript-eslint/no-explicit-any, @typescript-eslint/no-unsafe-return, @typescript-eslint/no-unsafe-call, @typescript-eslint/no-unsafe-member-access
             (r: any) => r.find((x: Food) => x.timestamp === day)?.meals ?? []
         ) as Meal[]
         // remove static meals if includeStatic is false. otherwise return all meals
diff --git a/src/utils/map-utils.ts b/src/utils/map-utils.ts
index deaa6b42..64a84f71 100644
--- a/src/utils/map-utils.ts
+++ b/src/utils/map-utils.ts
@@ -1,6 +1,6 @@
 import { SEARCH_TYPES } from '@/types/map'
 import { type MaterialIcon } from '@/types/material-icons'
-import { type Rooms } from '@/types/thi-api'
+import { type Rooms, type TypeStunde } from '@/types/thi-api'
 import { type AvailableRoom } from '@/types/utils'
 import { trackEvent } from '@aptabase/react-native'
 import { type GeoJsonProperties, type Position } from 'geojson'
@@ -127,19 +127,19 @@ export function getRoomOpenings(rooms: Rooms[], date: Date): RoomOpenings {
         // flatten time slots
         .flatMap((rtype) =>
             Object.values(rtype.stunden).map((stunde) => ({
-                type: rtype.raumtyp,
                 ...stunde,
+                type: rtype.raumtyp,
             }))
         )
         // flatten room list
-        .flatMap((stunde: any) =>
+        .flatMap((stunde: TypeStunde) =>
             stunde.raeume.map(
                 ([, , room, capacity]: [string, string, number, number]) => ({
                     // 0 indicates that every room is free
                     room: room === 0 ? ROOMS_ALL : room.toString(),
-                    type: stunde.type.replace(/ \(.*\)$/, '').trim() ?? '',
-                    from: new Date(stunde.von as string),
-                    until: new Date(stunde.bis as string),
+                    type: stunde.type.replace(/ \(.*\)$/, '').trim(),
+                    from: new Date(stunde.von),
+                    until: new Date(stunde.bis),
                     capacity,
                 })
             )
@@ -219,13 +219,13 @@ export function getNextValidDate(): { startDate: Date; wasModified: boolean } {
  * @param {string} [duration] Minimum opening duration
  * @returns {Promise<object[]>}
  */
-export async function filterRooms(
+export function filterRooms(
     data: Rooms[],
     date: string,
     time: string,
     building: string = BUILDINGS_ALL,
     duration: string = DURATION_PRESET
-): Promise<AvailableRoom[]> {
+): AvailableRoom[] {
     const beginDate = new Date(date + 'T' + time)
     const [durationHours, durationMinutes] = duration
         .split(':')
@@ -239,7 +239,7 @@ export async function filterRooms(
         beginDate.getSeconds(),
         beginDate.getMilliseconds()
     )
-    return await searchRooms(data, beginDate, endDate, building)
+    return searchRooms(data, beginDate, endDate, building)
 }
 
 /**
@@ -249,12 +249,12 @@ export async function filterRooms(
  * @param {string} [building] Building name (e.g. `G`), defaults to all buildings
  * @returns {Promise<object[]>}
  */
-export async function searchRooms(
+export function searchRooms(
     data: Rooms[],
     beginDate: Date,
     endDate: Date,
     building: string = BUILDINGS_ALL
-): Promise<AvailableRoom[]> {
+): AvailableRoom[] {
     const openings = getRoomOpenings(data, beginDate)
     return Object.keys(openings)
         .flatMap((room) =>
@@ -283,12 +283,12 @@ export async function searchRooms(
  */
 export function getCenter(rooms: Position[][][]): Position {
     const getCenterPoint = (points: Position[][]): Position[] => {
-        const x = points[0].map((point: any) => point[0])
-        const y = points[0].map((point: any) => point[1])
-        const minX = Math.min(...(x as number[]))
-        const maxX = Math.max(...(x as number[]))
-        const minY = Math.min(...(y as number[]))
-        const maxY = Math.max(...(y as number[]))
+        const x = points[0].map((point: Position) => point[0])
+        const y = points[0].map((point: Position) => point[1])
+        const minX = Math.min(...x)
+        const maxX = Math.max(...x)
+        const minY = Math.min(...y)
+        const maxY = Math.max(...y)
         return [(minX + maxX) / 2, (minY + maxY) / 2] as unknown as Position[]
     }
 
@@ -381,11 +381,8 @@ export const getIcon = (
     const {
         Funktion_en: funktionEn,
         Raum: raum,
-    }: { Funktion_en: string; Raum: string } = (properties?.result.item
-        .properties as { Funktion_en: string; Raum: string }) ?? {
-        Funktion_en: '',
-        Raum: '',
-    }
+    }: { Funktion_en: string; Raum: string } = properties?.result.item
+        .properties as { Funktion_en: string; Raum: string }
     const food = ['M001', 'X001', 'F001']
     switch (type) {
         case SEARCH_TYPES.BUILDING:
diff --git a/src/utils/timetable-utils.ts b/src/utils/timetable-utils.ts
index 09b0217f..4b882b8d 100644
--- a/src/utils/timetable-utils.ts
+++ b/src/utils/timetable-utils.ts
@@ -122,7 +122,7 @@ export function getGroupedTimetable(
     exams: Exam[]
 ): TimetableSections[] {
     const combinedData = [
-        ...timetable,
+        ...timetable.map((lecture) => ({ ...lecture, eventType: 'timetable' })),
         ...exams.map((exam) => ({ ...exam, eventType: 'exam' })),
     ]
     const dates = [
@@ -169,7 +169,7 @@ export function generateKey(
     startDate: Date | string,
     room: string
 ): string {
-    return `${lectureName}-${new Date(startDate).getTime()}-${room}`
+    return `${lectureName}-${new Date(startDate).getTime().toString()}-${room}`
 }
 
 // This function checks if a given room string is valid based on the following criteria: