After discussing #38399 with @ahejlsberg, @RyanCavanaugh, and @DanielRosenwasser it sounds like one possible improvement we could make to the check time of code consuming JSX.IntrinsicElements (and related libraries) would be to reorder some of the properties in HTMLAttributes so that the ones depending on the type parameter are resolved first when comparing types structurally (i.e. so we hit the variance short-circuit ASAP). We could consider submitting PRs to that effect.
After discussing #38399 with @ahejlsberg, @RyanCavanaugh, and @DanielRosenwasser it sounds like one possible improvement we could make to the check time of code consuming JSX.IntrinsicElements (and related libraries) would be to reorder some of the properties in
HTMLAttributesso that the ones depending on the type parameter are resolved first when comparing types structurally (i.e. so we hit the variance short-circuit ASAP). We could consider submitting PRs to that effect.