chore: improve exposed api

src/area/index.js

@@ -1,4 +1,12 @@
-import { ref, watch, computed, reactive, nextTick, onMounted } from 'vue';
+import {
+  ref,
+  watch,
+  computed,
+  reactive,
+  nextTick,
+  onMounted,
+  getCurrentInstance,
+} from 'vue';
 import { createNamespace, pick } from '../utils';
 import { pickerProps } from '../picker/shared';
 import Picker from '../picker';
@@ -273,11 +281,12 @@ export default createComponent({
       }
     );
 
-    return (vm) => {
-      // @exposed-api
-      vm.reset = reset;
-      vm.getArea = getArea;
+    // @exposed-api
+    const vm = getCurrentInstance().proxy;
+    vm.reset = reset;
+    vm.getArea = getArea;
 
+    return () => {
       const columns = state.columns.slice(0, +props.columnsNum);
 
       return (

src/calendar/components/Month.js

@@ -1,4 +1,4 @@
-import { ref, computed } from 'vue';
+import { ref, computed, getCurrentInstance } from 'vue';
 import { createNamespace, addUnit } from '../../utils';
 import { unitToPx } from '../../utils/format/unit';
 import { setScrollTop } from '../../utils/dom/scroll';
@@ -246,19 +246,19 @@ export default createComponent({
       return <div ref={daysRef} />;
     };
 
-    return (vm) => {
-      vm.getDate = getDate;
-      vm.getTitle = getTitle;
-      vm.getHeight = getHeight;
-      vm.setVisible = setVisible;
-      vm.scrollIntoView = scrollIntoView;
+    // @exposed-api
+    const vm = getCurrentInstance().proxy;
+    vm.getDate = getDate;
+    vm.getTitle = getTitle;
+    vm.getHeight = getHeight;
+    vm.setVisible = setVisible;
+    vm.scrollIntoView = scrollIntoView;
 
-      return (
-        <div class={bem('month')} ref={monthRef} style={monthStyle.value}>
-          {renderTitle()}
-          {renderDays()}
-        </div>
-      );
-    };
+    return () => (
+      <div class={bem('month')} ref={monthRef} style={monthStyle.value}>
+        {renderTitle()}
+        {renderDays()}
+      </div>
+    );
   },
 });

src/count-down/index.js

@@ -5,6 +5,7 @@ import {
   onActivated,
   onDeactivated,
   onBeforeUnmount,
+  getCurrentInstance,
 } from 'vue';
 import { createNamespace } from '../utils';
 import { raf, cancelRaf } from '../utils/dom/raf';
@@ -135,17 +136,16 @@ export default createComponent({
 
     onBeforeUnmount(pause);
 
-    return (vm) => {
-      // @exposed-api
-      vm.start = start;
-      vm.reset = reset;
-      vm.pause = pause;
+    // @exposed-api
+    const vm = getCurrentInstance().proxy;
+    vm.start = start;
+    vm.reset = reset;
+    vm.pause = pause;
 
-      return (
-        <div class={bem()}>
-          {slots.default ? slots.default(timeData.value) : timeText.value}
-        </div>
-      );
-    };
+    return () => (
+      <div class={bem()}>
+        {slots.default ? slots.default(timeData.value) : timeText.value}
+      </div>
+    );
   },
 });