I can't call mixin method from the component, I get this error this.hello is not a function.
I can call hello() from Vue instance but I can't call it within the component.
What's a matter?!
<div id='vue-app'>
  <cmp></cmp>
</div>
const mixin = {
  methods: {
    hello() {
      return 'Hello World!';
    }
  },
  created() {
    console.log('Mixin Created!');
  },
};
const cmp = {
  created() {
    console.log('From Cmp:', this.hello());
  },
};
new Vue({
  components: {
    cmp
  },
  el: '#vue-app',
  mixins: [mixin],
  created() {
    console.log('From VM:', this.hello());
  },
});