.

packages/devices/attendance/core/utils/dates.mjs

@@ -0,0 +1,31 @@
+// dates.mjs
+export const z2 = n => String(n).padStart(2,'0');
+
+export function toUTCms(isoDate, time) {
+  const [Y,M,D] = isoDate.split('-').map(n=>parseInt(n,10));
+  const [h,m,s] = time.split(':').map(n=>parseInt(n,10));
+  return Date.UTC(Y, (M||1)-1, D||1, h||0, m||0, s||0);
+}
+
+export function fmtHMSUTC(ms){
+  const d = new Date(ms);
+  const z = n => String(n).padStart(2,'0');
+  return `${z(d.getUTCHours())}:${z(d.getUTCMinutes())}:${z(d.getUTCSeconds())}`;
+}
+
+export const fmtHM = mins => {
+  const h = Math.floor(mins/60); const m = Math.round(mins%60);
+  return `${z2(h)}:${z2(m)}`;
+};
+
+// "YY/MM/DD" o "YYYY/MM/DD" (o '-') -> "YYYY-MM-DD"
+export function normDateStr(s) {
+  const m = String(s || '').trim().match(/^(\d{2,4})[\/\-](\d{1,2})[\/\-](\d{1,2})$/);
+  if (!m) return null;
+  let [_, y, mo, d] = m;
+  let yy = parseInt(y, 10);
+  if (y.length === 2) yy = 2000 + yy;
+  const mm = parseInt(mo, 10), dd = parseInt(d, 10);
+  if (!(mm >= 1 && mm <= 12 && dd >= 1 && dd <= 31)) return null;
+  return `${yy}-${String(mm).padStart(2,'0')}-${String(dd).padStart(2,'0')}`;
+}

packages/devices/attendance/core/utils/docs.mjs

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+// docs.mjs
+import { z2 } from './dates.mjs';
+
+export const normDoc = s => {
+  const v = String(s||'').replace(/\D/g,'').replace(/^0+/,'');
+  return v || '0';
+};
+
+export const cleanDoc = s => {
+  const v = String(s||'').trim().replace(/^0+/, '');
+  return v === '' ? '0' : v;
+};
+
+// HH:MM o HH:MM:SS -> HH:MM:SS
+export const normTime = s => {
+  if (!s) return '';
+  const m = String(s).trim().match(/^(\d{1,2}):(\d{2})(?::(\d{2}))?$/);
+  if (!m) return '';
+  return `${z2(+m[1])}:${z2(+m[2])}:${z2(+m[3]||0)}`;
+};