[web-animations-1] Are Keyframes and `BaseKeyframe`s the same thing?

[Psychpsyo]

Steps 8.1 and 8.2 of process a keyframes argument only somewhat makes sense if they are, but even then it feels like there's some relationship between the two that is just not mentioned in the spec.
Step 8.1 says to:

For each property-value pair in frame, parse the property value using the syntax specified for that property.

That... does not do anything, since it doesn't store the result of parsing the property anywhere.
I'd assume this gets stored on the Keyframe part of the BaseKeyframe/Keyframe object, but it'd be nice if the spec was clear on how this is supposed to work.

[birtles]

It's a long time since I've looked at this part of the spec but I'm pretty sure the value is already stored on the keyframe. Whether the user agent stores the parsed value or not is up to the user agent. The purpose of the step is to provide a point to validate the input and define at which point each property on the input object is accessed.