diff --git a/packages/button/index.js b/packages/button/index.js
index f8f824d38..b2d87fc59 100644
--- a/packages/button/index.js
+++ b/packages/button/index.js
@@ -1,4 +1,5 @@
 import { use } from '../utils';
+import { inheritContext } from '../utils/functional';
 import Loading from '../loading';
 
 const [sfc, bem] = use('button');
@@ -30,7 +31,7 @@ export default sfc({
     }
   },
 
-  render(h, context, inherit) {
+  render(h, context) {
     const { props, listeners } = context;
     const { type, disabled, loading } = props;
 
@@ -58,7 +59,7 @@ export default sfc({
           }
         ])}
         onClick={onClick}
-        {...inherit}
+        {...inheritContext(context)}
       >
         {loading ? (
           <Loading size="20px" color={type === 'default' ? undefined : ''} />
diff --git a/packages/contact-card/index.js b/packages/contact-card/index.js
index 5021dc684..bd9317609 100644
--- a/packages/contact-card/index.js
+++ b/packages/contact-card/index.js
@@ -1,4 +1,5 @@
 import { use } from '../utils';
+import { inheritContext } from '../utils/functional';
 import Cell from '../cell';
 
 const [sfc, bem, t] = use('contact-card');
@@ -20,7 +21,7 @@ export default sfc({
     }
   },
 
-  render(h, context, inherit) {
+  render(h, context) {
     const { props, listeners } = context;
     const { type, editable } = props;
 
@@ -37,7 +38,7 @@ export default sfc({
             listeners.click(event);
           }
         }}
-        {...inherit}
+        {...inheritContext(context)}
       >
         {type === 'add'
           ? props.addText || t('addText')
diff --git a/packages/contact-list/index.js b/packages/contact-list/index.js
index 1508e040d..3ed828453 100644
--- a/packages/contact-list/index.js
+++ b/packages/contact-list/index.js
@@ -1,4 +1,5 @@
 import { use, noop } from '../utils';
+import { inheritContext } from '../utils/functional';
 import Icon from '../icon';
 import Cell from '../cell';
 import Button from '../button';
@@ -16,7 +17,7 @@ export default sfc({
     addText: String
   },
 
-  render(h, context, inherit) {
+  render(h, context) {
     const { props, listeners } = context;
 
     const List = props.list.map((item, index) => (
@@ -50,7 +51,7 @@ export default sfc({
     ));
 
     return (
-      <div class={bem()} {...inherit}>
+      <div class={bem()} {...inheritContext(context)}>
         <RadioGroup value={props.value} class={bem('group')}>
           {List}
         </RadioGroup>
diff --git a/packages/nav-bar/index.js b/packages/nav-bar/index.js
index bc2f04089..c923c8ac8 100644
--- a/packages/nav-bar/index.js
+++ b/packages/nav-bar/index.js
@@ -1,4 +1,5 @@
 import { use, noop } from '../utils';
+import { inheritContext } from '../utils/functional';
 import Icon from '../icon';
 
 const [sfc, bem] = use('nav-bar');
@@ -22,7 +23,7 @@ export default sfc({
     }
   },
 
-  render(h, context, inherit) {
+  render(h, context) {
     const { props, listeners } = context;
     const slots = context.slots();
 
@@ -30,7 +31,7 @@ export default sfc({
       <div
         class={[bem({ fixed: props.fixed }), { 'van-hairline--bottom': props.border }]}
         style={{ zIndex: props.zIndex }}
-        {...inherit}
+        {...inheritContext(context)}
       >
         <div class={bem('left')} onClick={listeners['click-left'] || noop}>
           {slots.left || [
diff --git a/packages/submit-bar/index.js b/packages/submit-bar/index.js
index 7210fc77b..d49eb2613 100644
--- a/packages/submit-bar/index.js
+++ b/packages/submit-bar/index.js
@@ -1,4 +1,5 @@
 import { use, noop } from '../utils';
+import { inheritContext } from '../utils/functional';
 import Button from '../button';
 
 const [sfc, bem, t] = use('submit-bar');
@@ -26,14 +27,14 @@ export default sfc({
     }
   },
 
-  render(h, context, inherit) {
+  render(h, context) {
     const { props, listeners } = context;
     const { tip, price } = props;
     const slots = context.slots();
     const hasPrice = typeof price === 'number';
 
     return (
-      <div class={bem()} {...inherit}>
+      <div class={bem()} {...inheritContext(context)}>
         {slots.top}
         {(slots.tip || tip) && (
           <div class={bem('tip')}>
diff --git a/packages/switch-cell/index.js b/packages/switch-cell/index.js
index 4db47370f..a88a50974 100644
--- a/packages/switch-cell/index.js
+++ b/packages/switch-cell/index.js
@@ -1,4 +1,5 @@
 import { use } from '../utils';
+import { inheritContext } from '../utils/functional';
 import Cell from '../cell';
 import Switch from '../switch';
 import SwitchMixin from '../mixins/switch';
@@ -19,11 +20,11 @@ export default sfc({
     }
   },
 
-  render(h, context, inherit) {
+  render(h, context) {
     const { props } = context;
 
     return (
-      <Cell center title={props.title} border={props.border} class={bem()} {...inherit}>
+      <Cell center title={props.title} border={props.border} class={bem()} {...inheritContext(context)}>
         <Switch {...{ props, on: context.listeners }} />
       </Cell>
     );
diff --git a/packages/utils/functional.ts b/packages/utils/functional.ts
new file mode 100644
index 000000000..aba54550e
--- /dev/null
+++ b/packages/utils/functional.ts
@@ -0,0 +1,33 @@
+import { RenderContext, VNodeData } from 'vue';
+
+type ObjectIndex = {
+  [key: string]: any;
+};
+
+type Context = RenderContext & { data: VNodeData & ObjectIndex };
+
+type InheritContext = Partial<VNodeData> & ObjectIndex;
+
+const inheritKey = [
+  'style',
+  'class',
+  'attrs',
+  'nativeOn',
+  'directives',
+  'staticClass',
+  'staticStyle'
+];
+
+const mapInheritKey: ObjectIndex = { nativeOn: 'on' };
+
+export function inheritContext(context: Context): InheritContext {
+  return inheritKey.reduce(
+    (obj, key) => {
+      if (context.data[key]) {
+        obj[mapInheritKey[key] || key] = context.data[key];
+      }
+      return obj;
+    },
+    {} as InheritContext
+  );
+}
diff --git a/packages/utils/use/sfc.js b/packages/utils/use/sfc.js
deleted file mode 100644
index 7d7f4340f..000000000
--- a/packages/utils/use/sfc.js
+++ /dev/null
@@ -1,73 +0,0 @@
-/**
- * Create a basic component with common options
- */
-import '../../locale';
-import { camelize } from '..';
-import SlotsMixin from '../../mixins/slots';
-
-const arrayProp = {
-  type: Array,
-  default: () => []
-};
-
-const numberProp = {
-  type: Number,
-  default: 0
-};
-
-function defaultProps(props) {
-  Object.keys(props).forEach(key => {
-    if (props[key] === Array) {
-      props[key] = arrayProp;
-    } else if (props[key] === Number) {
-      props[key] = numberProp;
-    }
-  });
-}
-
-function install(Vue) {
-  const { name } = this;
-  Vue.component(name, this);
-  Vue.component(camelize(`-${name}`), this);
-}
-
-const inheritKey = [
-  'style',
-  'class',
-  'attrs',
-  'nativeOn',
-  'directives',
-  'staticClass',
-  'staticStyle'
-];
-const mapInheritKey = { nativeOn: 'on' };
-
-function functional(sfc) {
-  const { render } = sfc;
-  sfc.render = (h, context) => {
-    const inherit = inheritKey.reduce((obj, key) => {
-      if (context.data[key]) {
-        obj[mapInheritKey[key] || key] = context.data[key];
-      }
-      return obj;
-    }, {});
-    return render(h, context, inherit);
-  };
-}
-
-export default name => sfc => {
-  sfc.name = name;
-  sfc.install = install;
-  sfc.mixins = sfc.mixins || [];
-  sfc.mixins.push(SlotsMixin);
-
-  if (sfc.props) {
-    defaultProps(sfc.props);
-  }
-
-  if (sfc.functional) {
-    functional(sfc);
-  }
-
-  return sfc;
-};
diff --git a/packages/utils/use/sfc.ts b/packages/utils/use/sfc.ts
new file mode 100644
index 000000000..ee38fd201
--- /dev/null
+++ b/packages/utils/use/sfc.ts
@@ -0,0 +1,53 @@
+/**
+ * Create a basic component with common options
+ */
+import '../../locale';
+import { camelize } from '..';
+import SlotsMixin from '../../mixins/slots';
+import Vue, { VueConstructor, ComponentOptions } from 'vue';
+
+type VantComponentOptions = ComponentOptions<Vue> & {
+  functional?: boolean;
+  install?: (Vue: VueConstructor) => void;
+};
+
+const arrayProp = {
+  type: Array,
+  default: () => []
+};
+
+const numberProp = {
+  type: Number,
+  default: 0
+};
+
+function defaultProps(props: any) {
+  Object.keys(props).forEach(key => {
+    if (props[key] === Array) {
+      props[key] = arrayProp;
+    } else if (props[key] === Number) {
+      props[key] = numberProp;
+    }
+  });
+}
+
+function install(this: ComponentOptions<Vue>, Vue: VueConstructor) {
+  const { name } = this;
+  if (name) {
+    Vue.component(name, this);
+    Vue.component(camelize(`-${name}`), this);
+  }
+}
+
+export default (name: string) => (sfc: VantComponentOptions) => {
+  sfc.name = name;
+  sfc.install = install;
+  sfc.mixins = sfc.mixins || [];
+  sfc.mixins.push(SlotsMixin);
+
+  if (sfc.props) {
+    defaultProps(sfc.props);
+  }
+
+  return sfc;
+};