Native dynamic es6 class mixin

MixinES6.js

const Storage = Sup => class extends Sup {
  save(database) { }
}
const Validation = Sup => class extends Sup {
  validate(schema) { }
}

class Person { }
class Employee extends Storage(Validation(Person)) { }

test.js

const tap = require('tap').test

const Execution = Sup => class extends Sup { get run() { return true } }
class TestObject { get isTestObject() { return true } }
tap('execution mixin test', 
  function(t){
    class ExtendedObject extends Execution( TestObject ) { }
    const tested = new ExtendedObject() 
    t.ok(tested)
    t.ok(tested.isTestObject)
    t.ok(tested.run)
    t.end()
  }
)

/*
# Subtest: execution mixin test
    ok 1 - expect truthy value
    ok 2 - expect truthy value
    ok 3 - expect truthy value
    1..3 
ok 1 - execution mixin test    
*/