ef6b3255
 杨鑫
修改BUG
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/** 解析后端常见时间串（含 `yyyy-MM-dd HH:mm:ss`） */
function parseBackendDate(iso: string | null | undefined): Date | null {
if (iso == null) return null;
const s = String(iso).trim();
if (!s) return null;
let d = new Date(s);
if (Number.isFinite(d.getTime())) return d;
const normalized = s.includes('T') ? s : s.replace(' ', 'T');
d = new Date(normalized);
return Number.isFinite(d.getTime()) ? d : null;
}
/** 相对「多久以前」：用于会话 `lastUpdated`、打印时间等 */
export function formatRelativeSince(iso: string | null | undefined): string {
const parsed = parseBackendDate(iso);
if (!parsed) return '—';
const t = parsed.getTime();
const diffSec = Math.max(0, Math.round((Date.now() - t) / 1000));
if (diffSec < 60) return 'Just now';
if (diffSec < 3600) return `${Math.floor(diffSec / 60)} min ago`;
if (diffSec < 86400) return `${Math.floor(diffSec / 3600)} hr ago`;
return `${Math.floor(diffSec / 86400)} day(s) ago`;
}
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