SOURCE

const SlSwitch = {
    name: 'SlSwitch',
    template: `
    <div v-show="show">
        <a-switch @change="onchange" v-bind="$attrs" v-on="$listeners"/>
    </div>
    `,
    props: {
        show: {
            default: false,
        }
    },
    methods: {
        onchange(checked) {
            debugger;
            console.log(`a-switch to ${checked}`);
        }
    },
    inheritAttrs: false
};

const App = {
    name: 'App',
    template: `
    <div>
        <sl-switch :show="true" @change="onchange"/>
    </div>
    `,
    components: {SlSwitch},
    methods: {
      onchange(checked) {
          console.log(`This App to ${checked}`);
      }
    },
}

new Vue({
    el: '#app',
    components: {
        App,
    }
});    

<div id="app">
	<app></app>
</div>