// main.js
Vue.config.errorHandler = function (err) {
  console.warn(err.message) //
}

// App.vue
<template>
  // ...
  <button @click="login">Login</button>
</template>

<script>
// ...
@Component
export default class App extends Vue {
  created() {
    throw new Error('Error during component creation')
  }

  async login() {
    const token = await api.loginUser(this.email, this.password)
    // ...
  }
}
</script>