I updated to Ruby 2.4.1 and grape-entity started complaining about using a lambda with :if.

This worked perfectly on Ruby 2.4.0, grape 0.19.2 and grape-entity 0.6.1:

expose :context_company_id, if: -> { company_context? }

It doesn't help if I reduce the problem, this is still broken:

expose :anything, if: -> { true }

Using Ruby 2.4.1 the following error message appears instead:
caught error of type ArgumentError in after callback inside Grape::Middleware::Formatter : wrong number of arguments (given 2, expected 0)

I tried to attach a debugger at entity.rb:477, but I don't know how to figure out options. If I try to inspect it, it'll throw the same error. If I print it, it's very long and I have no idea what to look for.

 def exec_with_object(options, &block) debugger instance_exec(object, options, &block) end

(byebug) pp options.inspect *** ArgumentError Exception: wrong number of arguments (given 2, expected 0) 

Any ideas?