There should be a space between the number and the units.

[NodeGuy]

The International System of Units, or SI,[19] and the style guide on the English-language
Wikipedia[20] recommend a (non-breakable, thin) space between a number and its
units, as well as between units in the case of compound units, but never between the
prefix of an SI unit and the unit.

   45 kg not 45kg or 45 k g

source: http://en.wikipedia.org/wiki/Space_%28punctuation%29#Spaces_and_unit_symbols

[avoidwork]

This will be available (in 1.9.4) as soon as the travis-ci.org builds are functional again. The shorthand output will not adhere to this, and continue to follow the ls -h output.

[NodeGuy]

Thank you.

[avoidwork]

You're welcome. I also added a lint step to the build process, and a sourcemap.

[NodeGuy]

Nice! BTW, I dig http://filesizejs.com/, very pretty.