If you have a look in your Sublime Text installation on OSX under:

/Users/sanj/Library/Application Support/Sublime Text 3/Packages

you’ll notice that none of the default plugins or configurations are to be found.

They live in at another location at:

/Applications/Sublime Text 3.app/Contents/MacOS/Packages/

If you can’t find the Sublime Text 3.app folder try:

/Applications/Sublime Text.app/Contents/MacOS/Packages

All .sublime-package files are zip files. To have a look at their contents simply rename them to .zip files and extract.