diff --git a/packages/browser/src/check/docs/index.md b/packages/browser/src/check/docs/index.md
index 76cac30..e3b1613 100644
--- a/packages/browser/src/check/docs/index.md
+++ b/packages/browser/src/check/docs/index.md
@@ -7,4 +7,4 @@ title: 平台检测
 
 ## Demo
 
-<preview path="./index.vue" title="@xyx-utils/browser" description="用于平台的判断"></preview>
\ No newline at end of file
+<preview path="./demo.vue" title="@xyx-utils/browser" description="用于平台的判断"></preview>
\ No newline at end of file
diff --git a/packages/core/src/common/padLeftZero/__tests__/index.ts b/packages/core/src/common/padLeftZero/__tests__/index.ts
index 060c503..7669b6f 100644
--- a/packages/core/src/common/padLeftZero/__tests__/index.ts
+++ b/packages/core/src/common/padLeftZero/__tests__/index.ts
@@ -5,6 +5,10 @@ describe("padLeftZero", async () => {
         const str = "aa";
         expect(padLeftZero(str, 3)).toStrictEqual("0aa");
     });
+    it("错误", async () => {
+        const str: any = 11;
+        expect(padLeftZero(str, 3)).toStrictEqual(11);
+    });
     it("超出长度", async () => {
         const str = "aaaaaa";
         expect(padLeftZero(str, 3)).toStrictEqual("aaaaaa");
diff --git a/packages/core/src/date/format/formatDateByFmt/__tests__/index.ts b/packages/core/src/date/format/formatDateByFmt/__tests__/index.ts
new file mode 100644
index 0000000..c1e173b
--- /dev/null
+++ b/packages/core/src/date/format/formatDateByFmt/__tests__/index.ts
@@ -0,0 +1,14 @@
+import { formatDateByFmt } from "@xyx-utils/core";
+
+describe("formatDateByFmt", async () => {
+    it("时间格式化", async () => {
+        const date = new Date("2025-03-07 08:54:21");
+        expect(formatDateByFmt(date, "yyyy-MM-dd hh:mm:ss")).toStrictEqual("2025-03-07 08:54:21");
+    });
+    it("22", async () => {
+        const date = new Date("2025-03-07 08:02:01");
+        expect(formatDateByFmt(date, "yyyy-MM-dd hh:m:s")).toStrictEqual("2025-03-07 08:2:1");
+        const date2 = new Date("2025-03-07 08:12:01");
+        expect(formatDateByFmt(date2, "yyyy-MM-dd hh:m:s")).toStrictEqual("2025-03-07 08:12:1");
+    });
+});
diff --git a/packages/core/src/date/format/docs/demo.vue b/packages/core/src/date/format/formatDateByFmt/docs/demo.vue
similarity index 91%
rename from packages/core/src/date/format/docs/demo.vue
rename to packages/core/src/date/format/formatDateByFmt/docs/demo.vue
index 86af7f0..96de589 100644
--- a/packages/core/src/date/format/docs/demo.vue
+++ b/packages/core/src/date/format/formatDateByFmt/docs/demo.vue
@@ -7,7 +7,7 @@
   </div>
 </template>
 <script lang="ts" setup>
-import { formatDateByFmt } from "@xyx-utils/core/date/format";
+import { formatDateByFmt } from "@xyx-utils/core/date/format/formatDateByFmt";
 import { onScopeDispose, ref } from "vue";
 
 const date = ref(formatDateByFmt(new Date(), "yyyy-MM-dd hh:mm:ss"))
diff --git a/packages/core/src/date/format/docs/index.md b/packages/core/src/date/format/formatDateByFmt/docs/index.md
similarity index 100%
rename from packages/core/src/date/format/docs/index.md
rename to packages/core/src/date/format/formatDateByFmt/docs/index.md
diff --git a/packages/core/src/date/format/formatDateByFmt/index.ts b/packages/core/src/date/format/formatDateByFmt/index.ts
new file mode 100644
index 0000000..047a42d
--- /dev/null
+++ b/packages/core/src/date/format/formatDateByFmt/index.ts
@@ -0,0 +1,21 @@
+import { padLeftZero } from "@xyx-utils/core/common/padLeftZero";
+
+export function formatDateByFmt(date, fmt) {
+    if (/(y+)/.test(fmt)) {
+        fmt = fmt.replace(RegExp.$1, (date.getFullYear() + "").substr(4 - RegExp.$1.length));
+    }
+    const o = {
+        "M+": date.getMonth() + 1,
+        "d+": date.getDate(),
+        "h+": date.getHours(),
+        "m+": date.getMinutes(),
+        "s+": date.getSeconds(),
+    };
+    for (const k in o) {
+        if (new RegExp(`(${k})`).test(fmt)) {
+            const str = o[k] + "";
+            fmt = fmt.replace(RegExp.$1, RegExp.$1.length === 1 ? str : padLeftZero(str, 2));
+        }
+    }
+    return fmt;
+}
diff --git a/packages/core/src/date/format/index.ts b/packages/core/src/date/format/index.ts
index 047a42d..e1af07f 100644
--- a/packages/core/src/date/format/index.ts
+++ b/packages/core/src/date/format/index.ts
@@ -1,21 +1 @@
-import { padLeftZero } from "@xyx-utils/core/common/padLeftZero";
-
-export function formatDateByFmt(date, fmt) {
-    if (/(y+)/.test(fmt)) {
-        fmt = fmt.replace(RegExp.$1, (date.getFullYear() + "").substr(4 - RegExp.$1.length));
-    }
-    const o = {
-        "M+": date.getMonth() + 1,
-        "d+": date.getDate(),
-        "h+": date.getHours(),
-        "m+": date.getMinutes(),
-        "s+": date.getSeconds(),
-    };
-    for (const k in o) {
-        if (new RegExp(`(${k})`).test(fmt)) {
-            const str = o[k] + "";
-            fmt = fmt.replace(RegExp.$1, RegExp.$1.length === 1 ? str : padLeftZero(str, 2));
-        }
-    }
-    return fmt;
-}
+export * from "./formatDateByFmt"
\ No newline at end of file