refactor: reorganize all components (#8303)

src/collapse-item/CollapseItem.tsx

@@ -1,7 +1,9 @@
-import { ref, watch, computed, nextTick } from 'vue';
+import { ref, watch, computed, nextTick, defineComponent } from 'vue';
 
 // Utils
+import { cellProps } from '../cell/Cell';
 import { createNamespace } from '../utils';
+import { COLLAPSE_KEY, CollapseProvide } from '../collapse/Collapse';
 
 // Composables
 import { raf, doubleRaf, useParent } from '@vant/use';
@@ -9,12 +11,13 @@ import { useExpose } from '../composables/use-expose';
 import { useLazyRender } from '../composables/use-lazy-render';
 
 // Components
-import Cell, { cellProps } from '../cell';
-import { COLLAPSE_KEY, CollapseProvide } from '../collapse';
+import Cell from '../cell';
 
-const [createComponent, bem] = createNamespace('collapse-item');
+const [name, bem] = createNamespace('collapse-item');
+
+export default defineComponent({
+  name,
 
-export default createComponent({
   props: {
     ...cellProps,
     name: [Number, String],

src/collapse-item/index.ts

@@ -0,0 +1,7 @@
+import { installable } from '../utils';
+import _CollapseItem from './CollapseItem';
+
+const CollapseItem = installable(_CollapseItem);
+
+export default CollapseItem;
+export { CollapseItem };