feat: elapsed + drift formatting helpers

2026-07-20 13:58:49 +01:00
parent c01917d38a
commit 80c8ecb5c8
2 changed files with 29 additions and 0 deletions
@@ -0,0 +1,13 @@
+export function fmtElapsed(ms) {
+  const total = Math.floor(ms / 1000);
+  const h = Math.floor(total / 3600);
+  const m = Math.floor((total % 3600) / 60);
+  return `${h}:${String(m).padStart(2, '0')}`;
+}
+
+export function fmtDrift(driftMin) {
+  if (driftMin == null) return '';
+  const r = Math.round(driftMin);
+  if (r === 0) return 'on time';
+  return r > 0 ? `+${r} behind` : `${Math.abs(r)} ahead`;
+}