[improvement] Functional components be just functions (#2735)

packages/switch/index.js

@@ -1,11 +1,11 @@
 import { use } from '../utils';
 import Loading from '../loading';
-import SwitchMixin from '../mixins/switch';
+import { switchProps } from './shared';
 
 const [sfc, bem] = use('switch');
 
 export default sfc({
-  mixins: [SwitchMixin],
+  props: switchProps,
 
   methods: {
     onClick() {

packages/switch/shared.ts

@@ -0,0 +1,23 @@
+/**
+ * Common Switch Props
+ */
+
+export const switchProps = {
+  value: null,
+  loading: Boolean,
+  disabled: Boolean,
+  activeColor: String,
+  inactiveColor: String,
+  activeValue: {
+    type: null,
+    default: true
+  },
+  inactiveValue: {
+    type: null,
+    default: false
+  },
+  size: {
+    type: String,
+    default: '30px'
+  }
+};