I am updating a ruby on rails app. One of the problem I am encountering is that a sass is no longer compiling because of a missing mixin : Sass::SyntaxError: Undefined mixin 'transform'.
When I am in the non updated app, I can generate the CSS with rake assets:precompile. I am trying to understand where the problematic mixin is located when it works.
On a working SASS, is there a way to see where the mixin is defined ?
I want to identify the gem that allow sass to use this mixin.
