export function formatNumber(value: number): string { return new Intl.NumberFormat('zh-CN').format(value) } export function formatUtcDay(value: string): string { const parsed = new Date(`${value}T00:00:00.000Z`) return Number.isNaN(parsed.getTime()) ? value : new Intl.DateTimeFormat('zh-CN', { month: 'numeric', day: 'numeric', timeZone: 'UTC', }).format(parsed) } export function formatUtcTimestamp(value: string): string { const parsed = new Date(value) return Number.isNaN(parsed.getTime()) ? value : `${new Intl.DateTimeFormat('zh-CN', { month: '2-digit', day: 'numeric', year: 'numeric', hour: '2-digit', minute: '2-digit', hour12: false, timeZone: 'UTC', }).format(parsed)}(UTC)` } export function statusCode(error: unknown): number | null { if (!error || typeof error !== 'object') return null const value = error as { statusCode?: number; status?: number } return value.statusCode ?? value.status ?? null }