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> you will be better off investing into proper testing (I mean here code coverage) Type safety and tests are completely orthogonal issues. Gary Bernhardt expla

• matesz 6y ago
  That is really on point, thanks! ps. watched the presentation - the idea here is that static type checking can eliminate entire category of possibile bugs which are impossible to be eliminated by test - for example enforce variables to be of specific type only. It doesn't work that well where in the most bug prone places typings are made optional.