WebIDL serializer has been deprecated in favor of toJSON operation

[tobie]

Hi!

We recently deprecated WebIDL serializers. You can now directly specify toJSON operations instead, which you previously weren't allowed to do.

To deal with common cases, we added a new [Default] extended attribute which triggers the default toJSON operation that behaves similarly to how serializers={attributes} or serializers={attributes, inherit} used to. That is, it serializes all attributes that are of a JSON type into a vanilla JSON object.

It seems the following interfaces in this spec are impacted by this change:

• PaymentAddress
• PaymentResponse

Both seem to be good candidate for the default toJSON operation. The below should be all you need:

[SecureContext]
interface PaymentResponse {
  [Default] object toJSON();
  // ...
};

[SecureContext]
interface PaymentAddress  {
  [Default] object toJSON();
  // ...
};

I'm sorry for the inconvenience this causes, but our hope is that this ultimately makes things a lot simpler and clearer for everybody.

Please feel free to reach out if you have any questions.

Thanks!

[marcoscaceres]

@tobie, can you check if #556 is all good?