@shanzhai/create-directory-step 
A Shanzhai step which ensures that a directory exists (as well as all of its parent directories).
Usage
Within a trigger's event handler, return an instance of CreateDirectoryStep
similar to the following:
new CreateDirectoryStep(
`A description of the operation being performed`,
[`a`, `path`, `to`, `a`, `directory`, `to`, `create`]
)Any part of the path a/path/to/a/directory/to/create which does not already
exist will be created as a directory.
If any part already exists as a file, an error will occur.
If the entire path already exists as a directory, nothing will happen.
Dependencies
This package has no runtime dependencies.
Peer Dependencies
This package has no runtime peer dependencies (it does not expect any other packages to be installed alongside itself).
