module T::Props::Constructor

def initialize(hash={})
  decorator = self.class.decorator
  decorator.props.each do |prop, rules|
    # It's important to explicitly compare against `true` here; the value can also be :existing or
    # :on_load (which are truthy) but we don't want to treat those as optional in this context.
    if T::Props::Utils.required_prop?(rules) && !decorator.has_default?(rules) && !hash.key?(prop)
      raise ArgumentError.new("Missing required prop `#{prop}` for class `#{self.class}`")
    end
  end
  super
end