Files
cozsweet-frontend-nextjs/src/utils/date.ts
T
admin 8cab34864e feat(ui): migrate Flutter UI library to Next.js 16 (App Router)
Migrate all 87 Dart files from /Users/chase/Documents/cozsweet/lib/ui/
to TypeScript React components, replacing Flutter-native features with
Web equivalents and reimplementing the BLoC pattern with React
Context + useReducer.

Highlights
- 1:1 BLoC -> Context+useReducer+side-effects mapping for auth, chat,
  user, and sidebar features (4 providers wired in root-providers.tsx)
- 500px MobileShell primitive eliminates per-screen layout boilerplate
- Headless Dialog primitive (createPortal + ESC + scroll lock) powers
  quota / pwa-install / username / pronouns / subscription / other-options
  dialogs
- New integrations/: facebook-sdk, google-identity, pwa-install,
  media-recorder (Web Speech API + MediaRecorder), browser-detect,
  chat-websocket (singleton), message-queue (throttled send)
- CSS Modules + existing design tokens (no new styling system);
  extended with breakpoints.css and dimensions.css
- Custom hooks: useBreakpoint (useSyncExternalStore),
  useFullVisibility (IntersectionObserver), usePwaInstall,
  usePullToRefresh
- Vitest + jsdom; 15 unit tests (chat-reducer, auth-validators)
- React 19.2.4, Next.js 16.2.7, Zod 4, lottie-react, classnames

Workarounds
- next.config.ts: experimental.staticGenerationRetryCount = 0 to
  bypass Next.js 16.2.7 /_global-error workStore prerender bug
- src/app/global-error.tsx: required Client Component
- src/types/globals.d.ts: centralized window.google / FB /
  SpeechRecognition declarations

Routes (/, /splash, /auth, /chat, /chat/deviceid/[deviceId],
/sidebar) all build and lint clean.

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-Authored-By: Claude <noreply@anthropic.com>
2026-06-09 13:39:49 +08:00

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/**
* 日期工具
*
* 原始 Dart: lib/utils/date_utils.dartapp_date_utils.DateUtils
*
* 业务侧用 `formatDate(date)` 生成聊天时间戳,`todayString()` 用于每日配额 key。
*/
/** 格式:`HH:mm`(与 Dart 端 `formatDate` 一致) */
export function formatDate(date: Date = new Date()): string {
const hh = String(date.getHours()).padStart(2, "0");
const mm = String(date.getMinutes()).padStart(2, "0");
return `${hh}:${mm}`;
}
/** 格式:`YYYY-MM-DD`,用于每日配额 key。 */
export function todayString(date: Date = new Date()): string {
const y = date.getFullYear();
const m = String(date.getMonth() + 1).padStart(2, "0");
const d = String(date.getDate()).padStart(2, "0");
return `${y}-${m}-${d}`;
}
/** 格式:人类可读的日期(`MMM D, YYYY`)。 */
export function formatHumanDate(date: Date = new Date()): string {
return date.toLocaleDateString("en-US", {
month: "short",
day: "numeric",
year: "numeric",
});
}
/** 同一日期(忽略时分秒) */
export function isSameDay(a: Date, b: Date): boolean {
return (
a.getFullYear() === b.getFullYear() &&
a.getMonth() === b.getMonth() &&
a.getDate() === b.getDate()
);
}