Initial commit

apps/web/src/lib/format.ts

@@ -0,0 +1,35 @@
+export function formatDuration(ms: number | null | undefined): string {
+  if (!ms || ms <= 0) return "--:--";
+  const total = Math.floor(ms / 1000);
+  const m = Math.floor(total / 60);
+  const s = total % 60;
+  return `${m}:${s.toString().padStart(2, "0")}`;
+}
+
+export function formatTime(seconds: number): string {
+  if (!Number.isFinite(seconds) || seconds < 0) seconds = 0;
+  const total = Math.floor(seconds);
+  const m = Math.floor(total / 60);
+  const s = total % 60;
+  return `${m}:${s.toString().padStart(2, "0")}`;
+}
+
+export function formatDate(value: string | null | undefined): string {
+  if (!value) return "";
+  const d = new Date(value);
+  if (Number.isNaN(d.getTime())) return value;
+  return d.toLocaleDateString("ru-RU", { year: "numeric", month: "long", day: "numeric" });
+}
+
+export function initials(name: string | null | undefined): string {
+  if (!name) return "?";
+  return name
+    .split(/\s+/)
+    .slice(0, 2)
+    .map((p) => p[0]?.toUpperCase() ?? "")
+    .join("");
+}
+
+export function cx(...parts: (string | false | null | undefined)[]): string {
+  return parts.filter(Boolean).join(" ");
+}