docs(changelog): 2.12.18

docs/markdown/changelog.en-US.md

@@ -16,6 +16,14 @@ Vant follows [Semantic Versioning 2.0.0](https://semver.org/lang/zh-CN/).
 
 ## Details
 
+### [v2.12.18](https://github.com/youzan/vant/compare/v2.12.17...v2.12.18)
+
+`2021-05-10`
+
+**Bug Fixes**
+
+- Coupon: timestamp can be string type [c5b4d1](https://github.com/youzan/vant/commit/c5b4d1a66372b94420146f9a640aee31f402889a)
+
 ### [v2.12.17](https://github.com/youzan/vant/compare/v2.12.16...v2.12.17)
 
 `2021-05-08`

docs/markdown/changelog.zh-CN.md

@@ -16,6 +16,14 @@ Vant 遵循 [Semver](https://semver.org/lang/zh-CN/) 语义化版本规范。
 
 ## 更新内容
 
+### [v2.12.18](https://github.com/youzan/vant/compare/v2.12.17...v2.12.18)
+
+`2021-05-10`
+
+**Bug Fixes**
+
+- CouponList: 修复时间为字符串格式时展示错误的问题 [c5b4d1](https://github.com/youzan/vant/commit/c5b4d1a66372b94420146f9a640aee31f402889a)
+
 ### [v2.12.17](https://github.com/youzan/vant/compare/v2.12.16...v2.12.17)
 
 `2021-05-08`

package.json

@@ -1,6 +1,6 @@
 {
   "name": "vant",
-  "version": "2.12.17",
+  "version": "2.12.18",
   "description": "Mobile UI Components built on Vue",
   "main": "lib/index.js",
   "module": "es/index.js",

src/coupon/index.js

@@ -10,7 +10,7 @@ function formatTimeStamp(timeStamp) {
   if (timeStamp < 10 ** 12) {
     return timeStamp * 1000;
   }
-  return timeStamp;
+  return +timeStamp;
 }
 
 function getDate(timeStamp) {