Add CI pipeline, pre-commit hooks, and offline caching

Configure GitHub Actions for linting, typechecking, and testing.
Add Husky and lint-staged for pre-commit checks. Implement API
response caching in AsyncStorage for offline support. Move core
tests to packages/core and add vitest configuration.

.editorconfig

@@ -0,0 +1,19 @@
+# EditorConfig for TimeToLeave
+# https://editorconfig.org
+
+root = true
+
+[*]
+charset = utf-8
+end_of_line = lf
+insert_final_newline = true
+trim_trailing_whitespace = true
+indent_style = space
+indent_size = 2
+max_line_length = 100
+
+[*.md]
+trim_trailing_whitespace = false
+
+[*.{yml,yaml}]
+indent_size = 2

.github/workflows/ci.yml

@@ -0,0 +1,35 @@
+name: CI
+
+on:
+  push:
+    branches: [main, master]
+  pull_request:
+    branches: [main, master]
+
+jobs:
+  lint-typecheck-test:
+    runs-on: ubuntu-latest
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v4
+
+      - name: Setup Node.js
+        uses: actions/setup-node@v4
+        with:
+          node-version: 20
+          cache: "npm"
+
+      - name: Install dependencies
+        run: npm ci
+
+      - name: Lint
+        run: npm run lint
+
+      - name: Typecheck
+        run: npm run typecheck
+
+      - name: Test
+        run: npm test
+
+      - name: Build web
+        run: npm run build

.husky/pre-commit

@@ -0,0 +1 @@
+npx lint-staged

POST_MVP_PLAN.md

@@ -1,79 +1,87 @@
 # TimeToLeave - Post-MVP Improvements Plan
 
+> **Last updated:** 2026-05-19
+> This plan reflects the current state of the codebase after the initial MVP and mobile rewrite.
+
+## Already Implemented (No Longer TODO)
+
+The following items from earlier versions of this plan have been completed and are in production:
+
+- **Native Calendar Import** — `expo-calendar` integration with device calendar sync, permission requests, and multiple calendar source selection.
+- **Push / Local Notifications** — `expo-notifications` with local notification scheduling. Server-side push (FCM/APNs) for live journey updates remains deferred.
+- **Dark / Light Theming** — System theme following and manual dark/light toggle on both web and mobile.
+- **Auto-Refresh** — `useFocusEffect`-based refresh on mobile when returning to foreground.
+
+---
+
 ## High Priority
 
-### 1. Native Calendar Import
-- Integrate with expo-calendar or react-native-calendar-events
-- Request calendar permissions
-- Auto-sync events from Google/Apple calendars
-- Support multiple calendar sources
+### 1. Offline-First Architecture
+- Cache journey and route data in `AsyncStorage` / `localStorage` for offline viewing.
+- Background sync when connection is restored.
+- Add explicit "offline mode" UI indicators.
+- Conflict resolution for concurrent event edits.
 
-### 2. Push Notifications
-- Implement FCM for Android and APNs for iOS
-- Server-side notification triggers for journey changes
-- Real-time updates when train status changes
-- Fallback to local notifications when offline
+### 2. Real Map Integration
+- Integrate `expo-maps` / `@vis.gl/react-google-maps` for visual route display.
+- Show origin, destination, and train stations on a map.
+- Display bike route with turn-by-turn directions.
+- Alternative route suggestions (e.g., faster vs. fewer changes).
 
-### 3. Offline-First Architecture
-- Use expo-sqlite for local caching
-- Cache journey data for offline access
-- Background sync when connection restored
-- Conflict resolution for concurrent edits
+### 3. Multiple Origins Support
+- Allow different origins per event (Home, Work, Custom presets).
+- Quick origin switching in event detail and settings.
+- Store origin presets in persistent settings.
+
+---
 
 ## Medium Priority
 
-### 4. Real Map Integration
-- Integrate expo-maps for visual route display
-- Show train stations on map
-- Display bike route with turn-by-turn directions
-- Alternative route suggestions
+### 4. Server-Side Push Notifications
+- Implement FCM for Android and APNs for iOS for real-time journey disruption alerts.
+- Real-time delay/cancellation push notifications.
+- Fallback to local notifications when the server is unreachable.
 
-### 5. Multiple Origins Support
-- Allow different origins per event
-- Home/Work/Custom origin presets
-- Quick origin switching in event detail
+### 5. Accessibility
+- TalkBack / VoiceOver screen reader support on mobile.
+- Dynamic type scaling.
+- High contrast mode.
+- WCAG 2.1 AA compliance audit on web.
 
-### 6. Auto-Refresh
-- Refresh journey data when returning to app
-- Background refresh for active events
-- Configurable refresh intervals
+### 6. Analytics & Crash Reporting
+- Integrate Sentry for error tracking on web and mobile.
+- Opt-in usage analytics.
+- Performance monitoring (Web Vitals, React Native startup time).
+- In-app user feedback collection.
+
+---
 
 ## Lower Priority
 
-### 7. Accessibility
-- TalkBack/VoiceOver support
-- Dynamic type scaling
-- High contrast mode
-- Screen reader optimizations
+### 7. Advanced Features
+- Shared events with friends / family (collaborative departure planning).
+- Recurring event templates.
+- Journey history and statistics dashboard.
+- Export / import event data (ICS, JSON).
 
-### 8. Theming
-- Dark mode support
-- System theme following
-- Custom color schemes
-- Accessibility-compliant color contrasts
+---
 
-### 9. Analytics & Crash Reporting
-- Sentry or similar for error tracking
-- Usage analytics (opt-in)
-- Performance monitoring
-- User feedback collection
+## Technical Debt & Quality
 
-### 10. Advanced Features
-- Shared events with friends/family
-- Recurring event templates
-- Journey history and statistics
-- Export/import event data
+### 8. Code Quality
+- Extract shared hooks to `packages/hooks` (deduplicate web and mobile hook implementations).
+- Increase unit test coverage across all packages.
+- Add Playwright E2E tests for web critical flows.
+- Add Detox E2E tests for mobile critical flows.
+- Bundle size analysis and reduction.
 
-## Technical Debt
+### 9. Developer Experience
+- Consolidate ESLint to Flat Config everywhere.
+- Add pre-commit hooks (`husky` + `lint-staged`).
+- Add GitHub Actions CI pipeline.
+- Architecture Decision Records (ADRs) in `docs/adr/`.
 
-### 11. Code Quality
-- More comprehensive test coverage
-- E2E tests for critical flows
-- Performance optimization
-- Bundle size reduction
-
-### 12. Documentation
-- User documentation
-- API documentation
-- Contributing guidelines
-- Architecture decisions (ADRs)
+### 10. Documentation
+- Keep `POST_MVP_PLAN.md` and `CHECKLIST.md` in sync with reality.
+- Contributing guidelines (`CONTRIBUTING.md`).
+- API versioning policy once the backend grows.

apps/mobile/.eslintrc.js

@@ -1,8 +0,0 @@
-module.exports = {
-  root: true,
-  extends: ['expo'],
-  rules: {
-    'react-native/no-inline-styles': 'off',
-  },
-  ignorePatterns: ['node_modules/', '.expo/', 'dist/'],
-};

apps/mobile/jest.config.cjs

@@ -5,4 +5,7 @@ module.exports = {
     '^@react-native-async-storage/async-storage$':
       '@react-native-async-storage/async-storage/jest/async-storage-mock',
   },
+  transformIgnorePatterns: [
+    'node_modules/(?!((jest-)?react-native|@react-native(-community)?)|expo(nent)?|@expo(nent)?/.*|@expo-google-fonts/.*|react-navigation|@react-navigation/.*|@unimodules/.*|unimodules|sentry-expo|native-base|@sentry/.*|@fortawesome/.*)',
+  ],
 };

apps/mobile/src/screens/EventDetailScreen.tsx

@@ -12,6 +12,14 @@ import { faArrowsRotate, faBicycle, faTrain, faTriangleExclamation } from '@fort
 import type { NativeStackNavigationProp } from '@react-navigation/native-stack';
 import type { RouteProp } from '@react-navigation/native';
 import { loadEvents, loadOriginStation, loadNotificationSettings } from '../store/eventStore';
+import {
+  getCachedJourneys,
+  getCachedBikeRoute,
+  getCachedWalkRoute,
+  setCachedJourneys,
+  setCachedBikeRoute,
+  setCachedWalkRoute,
+} from '../store/apiCache';
 import { api } from '../services/api';
 import type { Journey, BikeRoute, Station, Event as CalendarEvent, WalkRoute } from '@timetoleave/core';
 import { useDestinationStation } from '../hooks/useDestinationStation';
@@ -79,6 +87,15 @@ export function EventDetailScreen({ navigation, route }: ScreenProps) {
   const fetchData = useCallback(async () => {
     setLoading(true);
     setError(null);
+
+    // Preload cached data immediately so the UI isn't empty
+    const cachedJourneys = await getCachedJourneys(eventId);
+    const cachedBike = await getCachedBikeRoute(eventId);
+    const cachedWalk = await getCachedWalkRoute(eventId);
+    if (cachedJourneys) setJourneys(cachedJourneys);
+    if (cachedBike) setBikeRoute(cachedBike);
+    if (cachedWalk) setWalkRoute(cachedWalk);
+
     try {
       const [events, originStation, settings] = await Promise.all([
         loadEvents(),
@@ -111,8 +128,14 @@ export function EventDetailScreen({ navigation, route }: ScreenProps) {
 
           const walkDurationSeconds = settings.showWalkingOption ? (walkHook.walkRoute?.duration ?? 0) : 0;
           const target = stationArrivalTarget(found.eventTime, settings.arrivalBufferMinutes, walkDurationSeconds);
+          try {
             const results = await api.searchJourneys(originStation.extId, destExtId, target, { arriveBy: true });
             setJourneys(results);
+            await setCachedJourneys(eventId, results);
+          } catch {
+            if (!cachedJourneys) throw new Error('Failed to load journeys');
+            // Keep stale data, mark as offline
+          }
         } else if (destStation.error) {
           setError(`Destination station not resolvable: ${destStation.error}`);
         }
@@ -125,15 +148,22 @@ export function EventDetailScreen({ navigation, route }: ScreenProps) {
               destCoords.coords.lat, destCoords.coords.lng,
             );
             setBikeRoute(bike);
+            await setCachedBikeRoute(eventId, bike);
           }
         } catch {
-          setBikeRoute(null);
+          if (!cachedBike) setBikeRoute(null);
         } finally {
           setLoadingBike(false);
         }
       }
     } catch (err) {
-      setError(err instanceof Error ? err.message : 'Error loading');
+      const msg = err instanceof Error ? err.message : 'Error loading';
+      // If we have any cached data, show a soft offline warning instead of a hard error
+      if (cachedJourneys || cachedBike || cachedWalk) {
+        setError(`${msg} (showing cached data)`);
+      } else {
+        setError(msg);
+      }
     } finally {
       setLoading(false);
     }
@@ -144,7 +174,10 @@ export function EventDetailScreen({ navigation, route }: ScreenProps) {
   useEffect(() => {
     setWalkRoute(walkHook.walkRoute);
     setLoadingWalk(walkHook.loading);
-  }, [walkHook.walkRoute, walkHook.loading]);
+    if (walkHook.walkRoute) {
+      setCachedWalkRoute(eventId, walkHook.walkRoute).catch(() => {});
+    }
+  }, [walkHook.walkRoute, walkHook.loading, eventId]);
 
   const handleRefresh = () => {
     setBikeRoute(null);

apps/mobile/src/store/apiCache.ts

@@ -0,0 +1,84 @@
+/**
+ * Offline cache for API responses.
+ *
+ * Stores the last successful journey, bike-route, and walk-route results
+ * per event (keyed by event id) so the detail screen can show stale data
+ * when the device is offline.
+ */
+
+import AsyncStorage from '@react-native-async-storage/async-storage';
+import type { Journey, BikeRoute, WalkRoute } from '@timetoleave/core';
+
+const CACHE_PREFIX = '@timetoleave_cache_';
+const MAX_AGE_MS = 30 * 60 * 1000; // 30 minutes
+
+interface CacheEntry<T> {
+  data: T;
+  ts: number;
+}
+
+async function getCache<T>(key: string): Promise<T | null> {
+  try {
+    const raw = await AsyncStorage.getItem(CACHE_PREFIX + key);
+    if (!raw) return null;
+    const entry: CacheEntry<T> = JSON.parse(raw);
+    if (Date.now() - entry.ts > MAX_AGE_MS) return null;
+    return entry.data;
+  } catch {
+    return null;
+  }
+}
+
+async function setCache<T>(key: string, data: T): Promise<void> {
+  try {
+    const entry: CacheEntry<T> = { data, ts: Date.now() };
+    await AsyncStorage.setItem(CACHE_PREFIX + key, JSON.stringify(entry));
+  } catch {
+    // Silently fail on quota exceeded / privacy mode
+  }
+}
+
+export async function getCachedJourneys(eventId: string): Promise<Journey[] | null> {
+  const raw = await getCache<Array<Omit<Journey, 'sD' | 'rD' | 'sA' | 'rA'> & { sD: string; rD: string; sA: string; rA: string }>>(`journeys_${eventId}`);
+  if (!raw) return null;
+  return raw.map((j) => ({
+    ...j,
+    sD: new Date(j.sD),
+    rD: new Date(j.rD),
+    sA: new Date(j.sA),
+    rA: new Date(j.rA),
+  }));
+}
+
+export async function setCachedJourneys(eventId: string, journeys: Journey[]): Promise<void> {
+  const serializable = journeys.map((j) => ({
+    ...j,
+    sD: j.sD.toISOString(),
+    rD: j.rD.toISOString(),
+    sA: j.sA.toISOString(),
+    rA: j.rA.toISOString(),
+  }));
+  await setCache(`journeys_${eventId}`, serializable);
+}
+
+export async function getCachedBikeRoute(eventId: string): Promise<BikeRoute | null> {
+  return getCache(`bike_${eventId}`);
+}
+
+export async function setCachedBikeRoute(eventId: string, route: BikeRoute): Promise<void> {
+  await setCache(`bike_${eventId}`, route);
+}
+
+export async function getCachedWalkRoute(eventId: string): Promise<WalkRoute | null> {
+  return getCache(`walk_${eventId}`);
+}
+
+export async function setCachedWalkRoute(eventId: string, route: WalkRoute): Promise<void> {
+  await setCache(`walk_${eventId}`, route);
+}
+
+export async function clearApiCache(): Promise<void> {
+  const keys = await AsyncStorage.getAllKeys();
+  const cacheKeys = keys.filter((k) => k.startsWith(CACHE_PREFIX));
+  await AsyncStorage.multiRemove(cacheKeys);
+}

apps/web/.eslintrc.js

@@ -1,8 +0,0 @@
-module.exports = {
-  root: true,
-  extends: ['next/core-web-vitals'],
-  rules: {
-    '@next/next/no-html-link-for-pages': 'off',
-  },
-  ignorePatterns: ['node_modules/', '.next/', 'out/', 'dist/'],
-};

apps/web/src/app/page.tsx

@@ -1,5 +1,6 @@
 "use client";
 
+import { useMemo } from "react";
 import { useEventsStore } from "@/hooks/useEventsStore";
 import { useOriginStation } from "@/hooks/useOriginStation";
 import EventCard from "@/app/event/EventCard";
@@ -15,9 +16,13 @@ export default function Home() {
   const { events } = useEventsStore();
   const { station: originStation } = useOriginStation();
 
-  const upcoming = events
+  const upcoming = useMemo(
+    () =>
+      events
         .filter((e) => e.eventTime >= new Date())
-    .sort((a, b) => a.eventTime.getTime() - b.eventTime.getTime());
+        .sort((a, b) => a.eventTime.getTime() - b.eventTime.getTime()),
+    [events]
+  );
   const nextEvent = upcoming[0] ?? null;
 
   return (

package-lock.json

@@ -11,19 +11,9 @@
         "apps/*",
         "packages/*"
       ],
-      "dependencies": {
-        "@react-native-async-storage/async-storage": "2.2.0",
-        "expo": "~54.0.34",
-        "expo-calendar": "~15.0.8",
-        "expo-dev-client": "~6.0.21",
-        "expo-location": "~19.0.8",
-        "expo-notifications": "~0.32.17",
-        "expo-status-bar": "~3.0.9",
-        "react": "19.1.0",
-        "react-native": "0.81.5",
-        "react-native-safe-area-context": "~5.6.0",
-        "react-native-screens": "~4.16.0",
-        "react-native-svg": "^15.15.5"
+      "devDependencies": {
+        "husky": "^9.1.7",
+        "lint-staged": "^17.0.5"
       }
     },
     "apps/mobile": {
@@ -7464,6 +7454,69 @@
         "url": "https://github.com/sponsors/sindresorhus"
       }
     },
+    "node_modules/cli-truncate": {
+      "version": "5.2.0",
+      "resolved": "https://registry.npmjs.org/cli-truncate/-/cli-truncate-5.2.0.tgz",
+      "integrity": "sha512-xRwvIOMGrfOAnM1JYtqQImuaNtDEv9v6oIYAs4LIHwTiKee8uwvIi363igssOC0O5U04i4AlENs79LQLu9tEMw==",
+      "dev": true,
+      "license": "MIT",
+      "dependencies": {
+        "slice-ansi": "^8.0.0",
+        "string-width": "^8.2.0"
+      },
+      "engines": {
+        "node": ">=20"
+      },
+      "funding": {
+        "url": "https://github.com/sponsors/sindresorhus"
+      }
+    },
+    "node_modules/cli-truncate/node_modules/ansi-regex": {
+      "version": "6.2.2",
+      "resolved": "https://registry.npmjs.org/ansi-regex/-/ansi-regex-6.2.2.tgz",
+      "integrity": "sha512-Bq3SmSpyFHaWjPk8If9yc6svM8c56dB5BAtW4Qbw5jHTwwXXcTLoRMkpDJp6VL0XzlWaCHTXrkFURMYmD0sLqg==",
+      "dev": true,
+      "license": "MIT",
+      "engines": {
+        "node": ">=12"
+      },
+      "funding": {
+        "url": "https://github.com/chalk/ansi-regex?sponsor=1"
+      }
+    },
+    "node_modules/cli-truncate/node_modules/string-width": {
+      "version": "8.2.1",
+      "resolved": "https://registry.npmjs.org/string-width/-/string-width-8.2.1.tgz",
+      "integrity": "sha512-IIaP0g3iy9Cyy18w3M9YcaDudujEAVHKt3a3QJg1+sr/oX96TbaGUubG0hJyCjCBThFH+tFpcIyoUHUn1ogaLA==",
+      "dev": true,
+      "license": "MIT",
+      "dependencies": {
+        "get-east-asian-width": "^1.5.0",
+        "strip-ansi": "^7.1.2"
+      },
+      "engines": {
+        "node": ">=20"
+      },
+      "funding": {
+        "url": "https://github.com/sponsors/sindresorhus"
+      }
+    },
+    "node_modules/cli-truncate/node_modules/strip-ansi": {
+      "version": "7.2.0",
+      "resolved": "https://registry.npmjs.org/strip-ansi/-/strip-ansi-7.2.0.tgz",
+      "integrity": "sha512-yDPMNjp4WyfYBkHnjIRLfca1i6KMyGCtsVgoKe/z1+6vukgaENdgGBZt+ZmKPc4gavvEZ5OgHfHdrazhgNyG7w==",
+      "dev": true,
+      "license": "MIT",
+      "dependencies": {
+        "ansi-regex": "^6.2.2"
+      },
+      "engines": {
+        "node": ">=12"
+      },
+      "funding": {
+        "url": "https://github.com/chalk/strip-ansi?sponsor=1"
+      }
+    },
     "node_modules/client-only": {
       "version": "0.0.1",
       "resolved": "https://registry.npmjs.org/client-only/-/client-only-0.0.1.tgz",
@@ -8312,6 +8365,19 @@
         "node": ">=8"
       }
     },
+    "node_modules/environment": {
+      "version": "1.1.0",
+      "resolved": "https://registry.npmjs.org/environment/-/environment-1.1.0.tgz",
+      "integrity": "sha512-xUtoPkMggbz0MPyPiIWr1Kp4aeWJjDZ6SMvURhimjdZgsRuDplF5/s9hcgGhyXMhs+6vpnuoiZ2kFiu3FMnS8Q==",
+      "dev": true,
+      "license": "MIT",
+      "engines": {
+        "node": ">=18"
+      },
+      "funding": {
+        "url": "https://github.com/sponsors/sindresorhus"
+      }
+    },
     "node_modules/error-ex": {
       "version": "1.3.4",
       "resolved": "https://registry.npmjs.org/error-ex/-/error-ex-1.3.4.tgz",
@@ -9018,6 +9084,13 @@
         "node": ">=6"
       }
     },
+    "node_modules/eventemitter3": {
+      "version": "5.0.4",
+      "resolved": "https://registry.npmjs.org/eventemitter3/-/eventemitter3-5.0.4.tgz",
+      "integrity": "sha512-mlsTRyGaPBjPedk6Bvw+aqbsXDtoAyAzm5MO7JgU+yVRyMQ5O8bD4Kcci7BS85f93veegeCPkL8R4GLClnjLFw==",
+      "dev": true,
+      "license": "MIT"
+    },
     "node_modules/execa": {
       "version": "5.1.1",
       "resolved": "https://registry.npmjs.org/execa/-/execa-5.1.1.tgz",
@@ -9859,6 +9932,19 @@
         "node": "6.* || 8.* || >= 10.*"
       }
     },
+    "node_modules/get-east-asian-width": {
+      "version": "1.6.0",
+      "resolved": "https://registry.npmjs.org/get-east-asian-width/-/get-east-asian-width-1.6.0.tgz",
+      "integrity": "sha512-QRbvDIbx6YklUe6RxeTeleMR0yv3cYH6PsPZHcnVn7xv7zO1BHN8r0XETu8n6Ye3Q+ahtSarc3WgtNWmehIBfA==",
+      "dev": true,
+      "license": "MIT",
+      "engines": {
+        "node": ">=18"
+      },
+      "funding": {
+        "url": "https://github.com/sponsors/sindresorhus"
+      }
+    },
     "node_modules/get-intrinsic": {
       "version": "1.3.0",
       "resolved": "https://registry.npmjs.org/get-intrinsic/-/get-intrinsic-1.3.0.tgz",
@@ -10324,6 +10410,22 @@
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       "license": "MIT"
     },
+    "node_modules/husky": {
+      "version": "9.1.7",
+      "resolved": "https://registry.npmjs.org/husky/-/husky-9.1.7.tgz",
+      "integrity": "sha512-5gs5ytaNjBrh5Ow3zrvdUUY+0VxIuWVL4i9irt6friV+BqdCfmV11CQTWMiBYWHbXhco+J1kHfTOUkePhCDvMA==",
+      "dev": true,
+      "license": "MIT",
+      "bin": {
+        "husky": "bin.js"
+      },
+      "engines": {
+        "node": ">=18"
+      },
+      "funding": {
+        "url": "https://github.com/sponsors/typicode"
+      }
+    },
     "node_modules/iconv-lite": {
       "version": "0.6.3",
       "resolved": "https://registry.npmjs.org/iconv-lite/-/iconv-lite-0.6.3.tgz",
@@ -13151,6 +13253,125 @@
       "integrity": "sha512-7ylylesZQ/PV29jhEDl3Ufjo6ZX7gCqJr5F7PKrqc93v7fzSymt1BpwEU8nAUXs8qzzvqhbjhK5QZg6Mt/HkBg==",
       "license": "MIT"
     },
+    "node_modules/lint-staged": {
+      "version": "17.0.5",
+      "resolved": "https://registry.npmjs.org/lint-staged/-/lint-staged-17.0.5.tgz",
+      "integrity": "sha512-d12yC+/e8RhBjZtaxZn71FyrgU/P5e+uAPifhCLwdosQZP/zamSdKRWDC30ocVIbzDKiFG1McHc/LUgB92GIPw==",
+      "dev": true,
+      "license": "MIT",
+      "dependencies": {
+        "listr2": "^10.2.1",
+        "picomatch": "^4.0.4",
+        "string-argv": "^0.3.2",
+        "tinyexec": "^1.1.2"
+      },
+      "bin": {
+        "lint-staged": "bin/lint-staged.js"
+      },
+      "engines": {
+        "node": ">=22.22.1"
+      },
+      "funding": {
+        "url": "https://opencollective.com/lint-staged"
+      },
+      "optionalDependencies": {
+        "yaml": "^2.8.4"
+      }
+    },
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+        "wrap-ansi": "^9.0.0"
+      },
+      "engines": {
+        "node": ">=18"
+      },
+      "funding": {
+        "url": "https://github.com/sponsors/sindresorhus"
+      }
+    },
+    "node_modules/log-update/node_modules/ansi-escapes": {
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+      "funding": {
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+      "funding": {
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+      "engines": {
+        "node": ">=14"
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+      "funding": {
+        "url": "https://github.com/sponsors/isaacs"
+      }
+    },
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+        "is-fullwidth-code-point": "^5.0.0"
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+      "funding": {
+        "url": "https://github.com/chalk/slice-ansi?sponsor=1"
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+      "license": "MIT",
+      "dependencies": {
+        "emoji-regex": "^10.3.0",
+        "get-east-asian-width": "^1.0.0",
+        "strip-ansi": "^7.1.0"
+      },
+      "engines": {
+        "node": ">=18"
+      },
+      "funding": {
+        "url": "https://github.com/sponsors/sindresorhus"
+      }
+    },
+    "node_modules/log-update/node_modules/strip-ansi": {
+      "version": "7.2.0",
+      "resolved": "https://registry.npmjs.org/strip-ansi/-/strip-ansi-7.2.0.tgz",
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+      "dev": true,
+      "license": "MIT",
+      "dependencies": {
+        "ansi-regex": "^6.2.2"
+      },
+      "engines": {
+        "node": ">=12"
+      },
+      "funding": {
+        "url": "https://github.com/chalk/strip-ansi?sponsor=1"
+      }
+    },
+    "node_modules/log-update/node_modules/wrap-ansi": {
+      "version": "9.0.2",
+      "resolved": "https://registry.npmjs.org/wrap-ansi/-/wrap-ansi-9.0.2.tgz",
+      "integrity": "sha512-42AtmgqjV+X1VpdOfyTGOYRi0/zsoLqtXQckTmqTeybT+BDIbM/Guxo7x3pE2vtpr1ok6xRqM9OpBe+Jyoqyww==",
+      "dev": true,
+      "license": "MIT",
+      "dependencies": {
+        "ansi-styles": "^6.2.1",
+        "string-width": "^7.0.0",
+        "strip-ansi": "^7.1.0"
+      },
+      "engines": {
+        "node": ">=18"
+      },
+      "funding": {
+        "url": "https://github.com/chalk/wrap-ansi?sponsor=1"
+      }
+    },
     "node_modules/loose-envify": {
       "version": "1.4.0",
       "resolved": "https://registry.npmjs.org/loose-envify/-/loose-envify-1.4.0.tgz",
@@ -13855,6 +14292,19 @@
         "node": ">=6"
       }
     },
+    "node_modules/mimic-function": {
+      "version": "5.0.1",
+      "resolved": "https://registry.npmjs.org/mimic-function/-/mimic-function-5.0.1.tgz",
+      "integrity": "sha512-VP79XUPxV2CigYP3jWwAUFSku2aKqBH7uTAapFWCBqutsbmDo96KY5o8uh6U+/YSIn5OxJnXp73beVkpqMIGhA==",
+      "dev": true,
+      "license": "MIT",
+      "engines": {
+        "node": ">=18"
+      },
+      "funding": {
+        "url": "https://github.com/sponsors/sindresorhus"
+      }
+    },
     "node_modules/min-indent": {
       "version": "1.0.1",
       "resolved": "https://registry.npmjs.org/min-indent/-/min-indent-1.0.1.tgz",
@@ -15758,6 +16208,13 @@
         "node": ">=0.10.0"
       }
     },
+    "node_modules/rfdc": {
+      "version": "1.4.1",
+      "resolved": "https://registry.npmjs.org/rfdc/-/rfdc-1.4.1.tgz",
+      "integrity": "sha512-q1b3N5QkRUWUl7iyylaaj3kOpIT0N2i9MqIEQXP73GVsN9cw3fdx8X63cEmWhJGi2PPCF23Ijp7ktmd39rawIA==",
+      "dev": true,
+      "license": "MIT"
+    },
     "node_modules/rimraf": {
       "version": "3.0.2",
       "resolved": "https://registry.npmjs.org/rimraf/-/rimraf-3.0.2.tgz",
@@ -16392,6 +16849,52 @@
         "node": ">=8"
       }
     },
+    "node_modules/slice-ansi": {
+      "version": "8.0.0",
+      "resolved": "https://registry.npmjs.org/slice-ansi/-/slice-ansi-8.0.0.tgz",
+      "integrity": "sha512-stxByr12oeeOyY2BlviTNQlYV5xOj47GirPr4yA1hE9JCtxfQN0+tVbkxwCtYDQWhEKWFHsEK48ORg5jrouCAg==",
+      "dev": true,
+      "license": "MIT",
+      "dependencies": {
+        "ansi-styles": "^6.2.3",
+        "is-fullwidth-code-point": "^5.1.0"
+      },
+      "engines": {
+        "node": ">=20"
+      },
+      "funding": {
+        "url": "https://github.com/chalk/slice-ansi?sponsor=1"
+      }
+    },
+    "node_modules/slice-ansi/node_modules/ansi-styles": {
+      "version": "6.2.3",
+      "resolved": "https://registry.npmjs.org/ansi-styles/-/ansi-styles-6.2.3.tgz",
+      "integrity": "sha512-4Dj6M28JB+oAH8kFkTLUo+a2jwOFkuqb3yucU0CANcRRUbxS0cP0nZYCGjcc3BNXwRIsUVmDGgzawme7zvJHvg==",
+      "dev": true,
+      "license": "MIT",
+      "engines": {
+        "node": ">=12"
+      },
+      "funding": {
+        "url": "https://github.com/chalk/ansi-styles?sponsor=1"
+      }
+    },
+    "node_modules/slice-ansi/node_modules/is-fullwidth-code-point": {
+      "version": "5.1.0",
+      "resolved": "https://registry.npmjs.org/is-fullwidth-code-point/-/is-fullwidth-code-point-5.1.0.tgz",
+      "integrity": "sha512-5XHYaSyiqADb4RnZ1Bdad6cPp8Toise4TzEjcOYDHZkTCbKgiUl7WTUCpNWHuxmDt91wnsZBc9xinNzopv3JMQ==",
+      "dev": true,
+      "license": "MIT",
+      "dependencies": {
+        "get-east-asian-width": "^1.3.1"
+      },
+      "engines": {
+        "node": ">=18"
+      },
+      "funding": {
+        "url": "https://github.com/sponsors/sindresorhus"
+      }
+    },
     "node_modules/slugify": {
       "version": "1.6.9",
       "resolved": "https://registry.npmjs.org/slugify/-/slugify-1.6.9.tgz",
@@ -16597,6 +17100,16 @@
         "node": ">=4"
       }
     },
+    "node_modules/string-argv": {
+      "version": "0.3.2",
+      "resolved": "https://registry.npmjs.org/string-argv/-/string-argv-0.3.2.tgz",
+      "integrity": "sha512-aqD2Q0144Z+/RqG52NeHEkZauTAUWJO8c6yTftGJKO3Tja5tUgIfmIl6kExvhtxSDP7fXB6DvzkfMpCd/F3G+Q==",
+      "dev": true,
+      "license": "MIT",
+      "engines": {
+        "node": ">=0.6.19"
+      }
+    },
     "node_modules/string-length": {
       "version": "4.0.2",
       "resolved": "https://registry.npmjs.org/string-length/-/string-length-4.0.2.tgz",
@@ -18410,7 +18923,8 @@
         "date-fns": "^4.1.0"
       },
       "devDependencies": {
-        "typescript": "^5"
+        "typescript": "^5",
+        "vitest": "^4.1.5"
       }
     }
   }

package.json

@@ -12,29 +12,24 @@
     "start": "npm run start -w apps/web",
     "lint": "npm run lint -w apps/web && npm run lint -w apps/mobile && npm run lint -w packages/core && npm run lint -w packages/api-client",
     "typecheck": "npm run typecheck -w apps/web && npm run typecheck -w apps/mobile && npm run typecheck -w packages/core && npm run typecheck -w packages/api-client",
-    "test": "npm run test -w apps/web && npm run test -w apps/mobile",
+    "test": "npm run test -w apps/web && npm run test -w apps/mobile && npm run test -w packages/core",
     "dev:mobile": "npm run start -w apps/mobile",
     "typecheck:mobile": "npm run typecheck -w apps/mobile",
-    "android": "expo run:android",
-    "ios": "expo run:ios"
+    "prepare": "husky"
+  },
+  "lint-staged": {
+    "*.{ts,tsx}": [
+      "eslint --fix",
+      "bash -c 'npm run typecheck'"
+    ]
   },
   "overrides": {
     "react": "19.1.0",
     "react-dom": "19.1.0",
     "react-test-renderer": "19.1.0"
   },
-  "dependencies": {
-    "@react-native-async-storage/async-storage": "2.2.0",
-    "expo": "~54.0.34",
-    "expo-calendar": "~15.0.8",
-    "expo-dev-client": "~6.0.21",
-    "expo-location": "~19.0.8",
-    "expo-notifications": "~0.32.17",
-    "expo-status-bar": "~3.0.9",
-    "react": "19.1.0",
-    "react-native": "0.81.5",
-    "react-native-safe-area-context": "~5.6.0",
-    "react-native-screens": "~4.16.0",
-    "react-native-svg": "^15.15.5"
+  "devDependencies": {
+    "husky": "^9.1.7",
+    "lint-staged": "^17.0.5"
   }
 }

packages/core/package.json

@@ -6,12 +6,14 @@
   "types": "src/index.ts",
   "scripts": {
     "typecheck": "tsc --noEmit",
-    "lint": "eslint src/"
+    "lint": "eslint src/",
+    "test": "vitest run"
   },
   "dependencies": {
     "date-fns": "^4.1.0"
   },
   "devDependencies": {
-    "typescript": "^5"
+    "typescript": "^5",
+    "vitest": "^4.1.5"
   }
 }

packages/core/src/__tests__/countdown-utils.test.ts

@@ -1,5 +1,5 @@
 import { describe, it, expect } from "vitest";
-import { calculateCountdown } from "@timetoleave/core";
+import { calculateCountdown } from "../countdown-utils";
 
 describe("countdown-utils", () => {
   describe("calculateCountdown", () => {

packages/core/src/__tests__/hafas-time.test.ts

@@ -1,5 +1,5 @@
 import { describe, it, expect } from "vitest";
-import { parseHafasTime, hafasDateTime } from "@timetoleave/core";
+import { parseHafasTime, hafasDateTime } from "../hafas-time";
 
 describe("getTimezoneOffsetMinutes (via parseHafasTime)", () => {
   /*

packages/core/vitest.config.ts

@@ -0,0 +1,8 @@
+import { defineConfig } from "vitest/config";
+
+export default defineConfig({
+  test: {
+    environment: "node",
+    globals: true,
+  },
+});