feat(@vant/use): add useCountDown

src/count-down/use-count-down.ts

@@ -6,7 +6,6 @@ import {
   onBeforeUnmount,
 } from 'vue';
 import { raf, cancelRaf } from '../utils';
-import { isSameSecond } from './utils';
 
 export type CurrentTime = {
   days: number;
@@ -46,6 +45,10 @@ export function parseTime(time: number): CurrentTime {
   };
 }
 
+function isSameSecond(time1: number, time2: number): boolean {
+  return Math.floor(time1 / 1000) === Math.floor(time2 / 1000);
+}
+
 export function useCountDown(options: UseCountDownOptions) {
   let rafId: number;
   let endTime: number;

src/count-down/utils.ts

@@ -43,7 +43,3 @@ export function parseFormat(format: string, currentTime: CurrentTime): string {
 
   return format;
 }
-
-export function isSameSecond(time1: number, time2: number): boolean {
-  return Math.floor(time1 / 1000) === Math.floor(time2 / 1000);
-}