 
 opts =
   bare:    false
+  dedupe:  false
   exclude: null
   export:  null
   files:   []

      version()
    when '-b', '--bare'
      opts.bare = true
    when '-x', '--exclude'
      opts.exclude = new RegExp args.shift()
    when '-e', '--export'

    -e, --export <name>          export module as <name>
    -i, --include [module, ...]  additional modules to include, in <require as>:<path to module> format
    -m, --minify                 minify output
    -o, --output <file>          write bundle to file instead of stdout, {} may be used as a placeholder.
    -p, --prelude <file>         file to use as prelude
        --no-prelude             exclude prelude from bundle
    -s, --strict                 add "use strict" to each bundled module.
