message: refactor(NumberKeyboard): remove portal mixin
diff: -import { Transition } from 'vue';
  +import { Teleport, Transition } from 'vue';
  import { createNamespace } from '../utils';
  import { stopPropagation } from '../utils/dom/event';
  -import { PortalMixin } from '../mixins/portal';
  import { BindEventMixin } from '../mixins/bind-event';
  import Key from './Key';
  @@ -9,7 +8,6 @@ const [createComponent, bem] = createNamespace('number-keyboard');
  export default createComponent({
  mixins: [
  - PortalMixin(),
  BindEventMixin(function (bind) {
  if (this.hideOnClickOutside) {
  bind(document.body, 'touchstart', this.onBlur);
  @@ -21,6 +19,7 @@ export default createComponent({
  show: Boolean,
  title: String,
  zIndex: [Number, String],
  + teleport: [String, Object],
  closeButtonText: String,
  deleteButtonText: String,
  closeButtonLoading: Boolean,
  @@ -238,8 +237,7 @@ export default createComponent({
  render() {
  const Title = this.genTitle();
  -
  - return (
  + const Content = (
  <Transition name={this.transition ? 'van-slide-up' : ''}>
  <div
  vShow={this.show}
  @@ -257,5 +255,11 @@ export default createComponent({
  </div>
  </Transition>
  );
  +
  + if (this.teleport) {
  + return <Teleport to={this.teleport}>{Content}</Teleport>;
  + }
  +
  + return Content;
  },
  });
  