Vue.js inheritance call parent method

Is it possible to use method overriding in Vue.js?

var SomeClassA = Vue.extend({
  methods: {
    someFunction: function() {
      // ClassA some stuff
    }
  }
});

var SomeClassB = SomeClassA.extend({
  methods: {
    someFunction: function() {
      // CALL SomeClassA.someFunction
    }
  }
});

I want to call ClassA someFunction from ClassB someFunction. Is it even possible?

No, vue doesn't work with a direct inheritance model. You can't A.extend an component, as far as I know. It's parent-child relationships work mainly through props and events.

There are however three solutions:

1. Passing props (parent-child)

var SomeComponentA = Vue.extend({
    methods: {
        someFunction: function () {
            // ClassA some stuff
        }
    }
});

var SomeComponentB = Vue.extend({
   props: [ 'someFunctionParent' ],
   methods: {
       someFunction: function () {
           // Do your stuff
           this.someFunctionParent();
       }
   }
});

and in the template of SomeComponentA:

<some-component-b someFunctionParent="someFunction"></some-component-b>

2. Mixins

If this is common functionality that you want to use in other places, using a mixin might be more idiomatic:

var mixin = {
    methods: {
        someFunction: function() {
            // ...
        }
    }
};

var SomeComponentA = Vue.extend({
    mixins: [ mixin ],
    methods: {
    }
});

var SomeComponentB = Vue.extend({
   methods: {
       someFunctionExtended: function () {
           // Do your stuff
           this.someFunction();
       }
   }
});

3. Calling parent props (parent-child, ugly)

// In someComponentB's 'someFunction':
this.$parent.$options.methods.someFunction(...);