Ignore a line in sorbet - sorbet

Question

How can I ignore type checking for specific line?
if self.params.present?
self.params = self.params.gsub(/aaa/, "bbb")
end
In this example self.params is not nil, but sorbet still show error.
How can I disable type checker for specific line?
UPD: one more example
class CC
def a1
a = open("123")
return 123
ensure
if a
p a # => This code is unreachable https://srb.help/7006. Why??
end
end
end

Answer 1

There are a handful of ways to do this, all with varying degrees of "wow I'm really blowing away a lot of static type information."
They're all documented here, under Escape Hatches:
https://sorbet.org/docs/troubleshooting#escape-hatches
Unlike many other gradual type checkers / linters, Sorbet does not have a way to silence errors with a comment, and is unlikely to ever add such a feature. Instead, Sorbet allows silencing errors by either:
Lowering the typed: level of a file, i.e., from typed: true to typed: false (see here for the consequences).
Using T.unsafe to convert some expression to T.untyped.
(Using comments to silence errors from a type checker is often the wrong solution, because when there's a type error, it usually has a lot of downstream effects that might cause their own errors, which become even more confusing because the real source of the error has been silenced!)