Part of the Functor instance for Fantasy Land 2.x+. See the map method for details.
('F 'a).(('a) => 'b) => 'F 'b
where 'F is FunctorPart of the Functor instance for Fantasy Land 2.x+. See the map method for details.
'fantasy-land/map'(transformation) {
return this.map(transformation);
}