You have a function with different return types based on whether or not rest parameters are passed in. Maybe it's a fringe edge case, but you never know when you'll need it. Read on to find a way to statically type this use case.

React and Redux go well together. And thanks to a lot of hard work by the TypeScript team, it's become much easier to use the React/Redux ecosystem in a strongly-typed fashion. From discriminated unions to partial types you can practically type every part of your app. And yet typing connect from react-redux is still elusive. Read on to find out how.