is duplicated by:

• SR-2266 Typealiased function-types are @escaping by default
• SR-2316 typealias for block type not defaulting to @NoEscape

relates to:

• SR-824 @NoEscape for Type Aliased Closures

Issue Description:

Since @noescape is now an attribute on the type, using it with type aliased closures results in a compiler error.

Code example:

typealias Handler = () -> ()

func foo(handler: @noescape Handler) { }

Error:

{code:bgColor=#FFFFFF| borderColor=#FF0000|borderWidth=2}
error: @NoEscape attribute only applies to function types
func foo(handler: @NoEscape Handler)
^