The "icons" field states:

"The icons member is an array of image objects..."

but "image objects" are undefined here. The spec is clearly referencing the Web App Manifest term:
https://www.w3.org/TR/appmanifest/#dfn-image-object

There is a lengthy section of that spec devoted to image objects. Should we:

• Include a normative reference to that spec, or
• Make use of a simplified data structure for our needs here

(I don't have an informed opinion yet.)

We've raised this issue after discussion at the 4 April 2017 payment apps task force call [1].

Ian

[1] https://www.w3.org/2017/04/04-apps-minutes#item07

Let's include a normative reference the algorithms for processing ImageObject. However, the manifest spec does not have WebIDL, so we would need to define it in our own spec.

We should probably start defining things as IDL dictionaries in the manifest spec - or else it's gonna get messy if other specs want to use this stuff. It's ok if we work out the details here and then upstream what we come up with.