lib/utils.ts

@@ -0,0 +1,29 @@
+import { clsx, type ClassValue } from "clsx";
+import { twMerge } from "tailwind-merge";
+
+/** 合并 className：clsx 处理条件类，tailwind-merge 消解冲突的 Tailwind 类 */
+export function cn(...inputs: ClassValue[]): string {
+	return twMerge(clsx(inputs));
+}
+
+/** 将日期格式化为中文可读形式，如 2025 年 3 月 8 日 */
+export function formatDate(date: string, locale = "zh-CN"): string {
+	return new Intl.DateTimeFormat(locale, {
+		year: "numeric",
+		month: "long",
+		day: "numeric",
+		timeZone: "UTC",
+	}).format(new Date(`${date}T00:00:00Z`));
+}
+
+/** 机器可读日期，用于 <time dateTime> */
+export function toDateTimeAttribute(date: string): string {
+	return new Date(`${date}T00:00:00Z`).toISOString();
+}
+
+/** 拼接绝对 URL，用于 canonical / OG / sitemap */
+export function absoluteUrl(base: string, pathname: string): string {
+	const base$ = base.replace(/\/+$/, "");
+	const path$ = pathname.startsWith("/") ? pathname : `/${pathname}`;
+	return `${base$}${path$}`;
+}