init frontend

excalidraw/excalidraw-app/utils/time.ts

@@ -0,0 +1,29 @@
+export const timeAgo = (date: string | number | Date): string => {
+  const now = new Date();
+  const past = new Date(date);
+  const diffInSeconds = Math.floor((now.getTime() - past.getTime()) / 1000);
+
+  if (diffInSeconds < 10) {
+    return "刚刚";
+  }
+  if (diffInSeconds < 60) {
+    return `${diffInSeconds} 秒前`;
+  }
+
+  const diffInMinutes = Math.floor(diffInSeconds / 60);
+  if (diffInMinutes < 60) {
+    return `${diffInMinutes} 分钟前`;
+  }
+
+  const diffInHours = Math.floor(diffInMinutes / 60);
+  if (diffInHours < 24) {
+    return `${diffInHours} 小时前`;
+  }
+
+  const diffInDays = Math.floor(diffInHours / 24);
+  if (diffInDays < 7) {
+    return `${diffInDays} 天前`;
+  }
+
+  return new Date(date).toLocaleDateString();
+};