Add to cart V1*

SketchSystems.spec

Add to cart V1*
  Click -> Cart Check

Add product to cart
  Loading*
  Success -> Success
  Fail -> Response evaluate

Cart Check
  Walk through -> Add product to cart
  Cart state fetched action required -> Response evaluate  
  HTTP_Failed -> Error

Response evaluate
  Needs flight -> Open Flight modal
  Known rule engine error -> Error
  Unknown error -> Error

Open Flight modal
  Close after success -> ResetForm
  Cancel -> Add to cart V1

ResetForm
  * -> Add to cart V1

Success
 Animation end -> Add to cart V1

Error
  Animation end -> Add to cart V1

SketchSystems_prototype.js

function render(model){
  let current_state_name = model.active_states[0].name;
  return $("h1",
           {style: {color: "darkBlue"}},
           `The current state is: ${current_state_name}`);
}