refactor: reorganize all components (#8303)

src/slider/Slider.tsx

@@ -1,4 +1,4 @@
-import { ref, computed, PropType, CSSProperties } from 'vue';
+import { ref, computed, PropType, CSSProperties, defineComponent } from 'vue';
 
 // Utils
 import {
@@ -14,11 +14,13 @@ import { useRect } from '@vant/use';
 import { useTouch } from '../composables/use-touch';
 import { useLinkField } from '../composables/use-link-field';
 
-const [createComponent, bem] = createNamespace('slider');
+const [name, bem] = createNamespace('slider');
 
 type SliderValue = number | number[];
 
-export default createComponent({
+export default defineComponent({
+  name,
+
   props: {
     range: Boolean,
     disabled: Boolean,

src/slider/index.ts

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