What I really want JS/TS is one of my favorite features about Swift: Throwing functions in Swift don't throw traditional exceptions (please someone up the stac

What I really want JS/TS is one of my favorite features about Swift: Throwing functions in Swift don't throw traditional exceptions (please someone up the stack catch this). Throwing an error in Swift actually returns an Error to the calling function instead of that function's normal result type. Swift also enforces that when you call code that might "throw" (return an error instead of a result) you either handle the error or "rethrow" it. In TS I use this pattern: `type ErrorThrowingFunction = <T,>() => T|Error` But it's not nearly as nice to use in TS since it's not a language feature.