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57 lines
2.1 KiB
TypeScript
57 lines
2.1 KiB
TypeScript
/** 发帖/回复时间统一为相对时间：刚刚 / N分钟前 / N小时前 / N天前 / N个月前 / N年前 */
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export function formatRelative(dateStr: string): string {
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const t = new Date(dateStr).getTime();
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const diff = Date.now() - t;
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const min = 60_000,
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hour = 60 * min,
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day = 24 * hour;
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if (diff < min) return "刚刚";
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if (diff < hour) return `${Math.floor(diff / min)}分钟前`;
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if (diff < day) return `${Math.floor(diff / hour)}小时前`;
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if (diff < 30 * day) return `${Math.floor(diff / day)}天前`;
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if (diff < 365 * day) return `${Math.floor(diff / (30 * day))}个月前`;
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return `${Math.floor(diff / (365 * day))}年前`;
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}
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/** 去掉末尾多余的 .0（12.0 → 12，1.25 → 1.3 由 toFixed 保证） */
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function trimTenths(v: number): string {
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return String(Number(v.toFixed(1)));
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}
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/** 紧凑数字：999 / 1.2K / 128K / 2.3M（站点数据卡） */
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export function formatCompact(n: number): string {
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if (!Number.isFinite(n)) return "0";
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if (n < 1000) return String(Math.round(n));
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if (n < 1_000_000) {
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const v = n / 1000;
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return `${v >= 100 ? Math.round(v) : trimTenths(v)}K`;
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}
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return `${trimTenths(n / 1_000_000)}M`;
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}
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function pad2(n: number) {
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return String(n).padStart(2, "0");
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}
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/** 短日期：今年显示 MM-DD，往年显示 YYYY-MM-DD（右栏公告用） */
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export function formatShortDate(dateStr: string): string {
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const d = new Date(dateStr);
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const md = `${pad2(d.getMonth() + 1)}-${pad2(d.getDate())}`;
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return d.getFullYear() === new Date().getFullYear()
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? md
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: `${d.getFullYear()}-${md}`;
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}
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/** 完整日期 YYYY-MM-DD */
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export function formatDate(dateStr: string): string {
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const d = new Date(dateStr);
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return `${d.getFullYear()}-${pad2(d.getMonth() + 1)}-${pad2(d.getDate())}`;
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}
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/** 完整日期时间 YYYY-MM-DD HH:mm:ss（本地时区） */
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export function formatDateTime(dateStr: string): string {
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const d = new Date(dateStr);
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if (Number.isNaN(d.getTime())) return "";
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return `${formatDate(dateStr)} ${pad2(d.getHours())}:${pad2(d.getMinutes())}:${pad2(d.getSeconds())}`;
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}
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