fix: 订单详情支付凭证, 退款

src/utils/business/format.ts

@@ -28,6 +28,18 @@ export function formatMoney(fen: number | undefined, showSymbol = true): string
   return showSymbol ? `¥${yuan}` : yuan
 }
 
+export function fenToYuan(fen: number | undefined | null): number {
+  if (fen === undefined || fen === null || Number.isNaN(fen)) return 0
+
+  return Number((fen / 100).toFixed(2))
+}
+
+export function yuanToFen(yuan: number | undefined | null): number | undefined {
+  if (yuan === undefined || yuan === null || Number.isNaN(yuan)) return undefined
+
+  return Math.round(yuan * 100)
+}
+
 /**
  * 格式化手机号（中间4位隐藏）
  * @param phone 手机号