Probable bugs

'switch' statement with no 'default' branch  

Reports a switch statement without default branches in CoffeeScript content.

Infinite loop statement  

Reports a for, while, or do statement that can only exit by throwing an exception.

Missing import statement  

Reports a module that is not referenced through an import statement.

Object literal call  

Reports an object literal expression that is invoked as if it were a function.

Variable assigned to itself  

Reports any assignment of the form x = x in CoffeeScript content.