Kaffeine's --- operation.

[yjgaia]

pls see bottom of this page.
http://weepy.github.io/kaffeine/docs/unwrapping_async_calls.html

When Does The Function Unwrapping ‘Stop’?

at an unmatched right bracket (e.g. the end of a function or arg list),
The end of the file
Or the —– operator – added for completeness, but I have never actually needed it.

I want to use Kaffeine's --- operation in toffee-script.

(I cannot speak english very well.. ;( sorry.)