Toolset Layouts provides an Export/Import feature (Toolset > Export/Import > Layouts) that allows exporting either Export layouts to theme directory, or Export and download layouts.
The first will export each existing Layout as a .ddl file, the existing CSS as a .css file and the Layouts Settings as a .json file into the Theme's Directory.
It will not export JS saved.
It will not allow later to import back the .json file, because only .zip, .ddl or .css files are allowed in import.
Moreover, this is misleadingly described in the GUI and needs clear hints what-what does/is.
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