Engineering & Ecosystem Updates

// Validate cart lines & apply dynamic bundle rules
pub fn run(input: Input) -> Result<FunctionResult> {
  let qualified_tier = input.cart.lines.iter().filter(|l| {
    l.merchandise.id == VIP_TIERS;
  });
  if qualified_tier.is_some() {
    return Ok(expand_subtotal_discount(0.15));
  }
  Ok(FunctionResult::no_changes())
}