Hmmm... in fact neither `intlNumber` nor `intlDate` have arbitrary parameters -- _all_ of the parameters for both of these handlers are read by the handler itself. (That is why we can use `val` to specify the value.)  I'll update this to `formatName` since it is specifying the name of a format already in the context.

Prefixing them with `intl` seems extraneous to me since we're already inside the `{@intlNumber}` handler.