brew/Library/Homebrew/cask/dsl/conflicts_with.rb

require "extend/hash_validator"
using HashValidator

module Cask
  class DSL
    class ConflictsWith < DelegateClass(Hash)
      VALID_KEYS = [
        :formula,
        :cask,
        :macos,
        :arch,
        :x11,
        :java,
      ].freeze

      def initialize(**pairs)
        pairs.assert_valid_keys!(*VALID_KEYS)

        super(Hash[pairs.map { |k, v| [k, Set.new([*v])] }])

        self.default = Set.new
      end

      def to_json(generator)
        Hash[map { |k, v| [k, v.to_a] }].to_json(generator)
      end
    end
  end
end