Create a class which will be equal to any of the passed-in arguments.

either.rb

# USAGE: expect(some_object).to eq either(String, 5, { this: :hash }, @something_else)
def either *objs
  Class.new(Object) do
    @objs = objs
    def self.===(other)
      @objs.reduce(false) do |memo, obj|
        memo ||= JsonExpressions::Matcher.new(obj).match(other)
      end
    end

    def self.inspect
      "either(#{@objs.map(&:inspect).join(', ')})"
    end
  end
end