修复 src 结构

src/component/footer/index.less

@@ -0,0 +1,3 @@
+.layui-footer {
+  box-sizing: border-box;
+}

src/component/footer/index.ts

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+import type { App } from "vue";
+import Component from "./index.vue";
+import type { IDefineComponent } from "../type/index";
+
+Component.install = (app: App) => {
+  app.component(Component.name || "LayFooter", Component);
+};
+
+export default Component as IDefineComponent;

src/component/footer/index.vue

@@ -0,0 +1,15 @@
+<script lang="ts">
+export default {
+  name: "LayFooter",
+};
+</script>
+
+<script setup lang="ts">
+import "./index.less";
+</script>
+
+<template>
+  <div class="layui-footer">
+    <slot></slot>
+  </div>
+</template>