When I run the install command:
npm install --save humanize-plus
npm installs EVERYTHING in this repository, including the src, bin and __tests__ directories, along with other files which are only needed in development.

Telling npm what to include should lighten the load:
In package.json:
"files": [
"dist/humanize.js"
],
"main" : "dist/humanize.js",
Thanks for a useful module!