Ruby is my least favorite part of Rails by far. The lack of type checking makes every single gem and rails update extremely dangerous in ways that are incredibly difficult to predict.

For example the redis gem updated to return an int from exists() instead of a bool like it did before. This doesn’t raise any exceptions because all ints work in if statements. They just always return true. Silently breaking all of the code using it. You can read all of the change logs and search your own code base, but will constantly run in to situations where another gems code is using the method that just changed.

As well as the fact that almost every method has one param “options” where the available options are never listed in the documentation and are impossible to find without reading the source code.

Rails itself I quite like for being an all inclusive framework that just works out of the box, but untyped languages should be avoided at all costs these days when we have much better options like typescript.