Pavel Yaskevich 1fb69a7d43 [Diagnostics] Diagnose cases when it's impossible to infer type for nil ...

Detect and diagnose situations when it's invalid to use `nil`
literal without more context e.g. `_ = nil`, `nil as? Int`, or
`_ = nil!`.

2020-09-25 14:59:54 -07:00

61 KiB

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