How to rewrite super.data() in AMD

[bandtank]

I am following the directions shown here to modify the date type. The original view has this code:

data() {
  const data = super.data();​

That syntax only works in ES6, which is not valid for customizations in the custom folder. AMD must be used. How do I rewrite that statement in AMD?

SyntaxError: 'super' keyword unexpected here (at date.js?r=1723651316:132:20)
    at new Function (<anonymous>)
    at Object._execute (loader.js:311:17)
    at Object._handleResponseText (loader.js:964:22)
    at loader.js:925:30​

[yuri]

It should work if you use ES6 classes (rather than the 'extend' method).

[yuri]

define(['views/fields/base'], Dep => {
    return class extends Dep {
        data() {
           return {
               ...super.data(),
               newKey: 'value',
           };
        }
    }​​
});

[bandtank]

Thank you. That worked.