Simple version of `StrongJSON::Type::Object#update_fields`

[ybiquitous]

Hello,

I want a method such as StrongJSON::Type::Object#merge, but is this idea reasonable and has a value to consider?

class StrongJSON
  module Type
    class Object
      def merge(other_object_type, *other_object_types)
        new_fields = fields.merge(*[other_object_type, *other_object_types].map(&:fields))
        self.class.new(new_fields, on_unknown: on_unknown, exceptions: exceptions)
      end
    end
  end
end

# Usage
Base = StrongJSON.new do
  let :config, object(root: string)
end

Foo = StrongJSON.new do
  let :config, object(disabled: boolean?)
end

Bar = StrongJSON.new do
  let :config, object(enabled: boolean?)
end

Baz = StrongJSON.new do
  let :config, Base.config.merge(Foo.config, Bar.config)
end

Baz.config.coerce({ root: "/" })
#=> {:root=>"/", :disabled=>nil, :enabled=>nil}

When using StrongJSON::Type::Object#update_fields, the code becomes a bit long:

Baz2 = StrongJSON.new do
  let :config, Base.config.update_fields { |fields|
    fields.merge!(Foo.config.fields, Bar.config.fields)
  }
end

Baz2.config.coerce({ root: "/" })
#=> {:root=>"/", :disabled=>nil, :enabled=>nil}