fillChildProps cannot pass functions through to fill

[TimoStaudinger]

Passing functions through to fills is currently not possible. Instead they are called during the transform step:

const value = fillChildProps[key];

if (typeof value === 'function') {
    acc[key] = () => value(fill, this.fills);
} else {
    acc[key] = value;
}

---

This prevents us from passing callbacks like onChange into fills.

Reading the readme, this seems to be by design:

  /**
   * Props to be applied to the child Element of every fill which has the same name.
   *
   *  If the value is a function, it must have the following signature:
   *    (target: Fill, fills: Fill[]) => void;
   *
   *  This allows you to access props on the fill which invoked the function
   *  by using target.props.something()
   */
  fillChildProps?: {[key: string]: any}

---

Could you please help me understand why this is the case? If the main use case is to get a 'ref' to the fill, wouldn't it be nicer and less limiting to make that a separate property?

[camwest]

I honestly forget. Can you look in the "advanced" example to see if it's being utilized? If you want to redesign this bit can you update the example?