bower.io "optional" keyword
View the packages on the bower.io package registry that are tagged with the "optional" keyword.
requirejs-optional
Optionally load a requirejs module.Latest release: 5 days ago - 0 stars on GitHub
argspecjs
argspec.js is a simple optional argument handling library for Javascript.Latest release: 10 days ago - 1 dependent repositories - 12 stars on GitHub
the-vladiator
Javascript validation and assertion library for checking incoming parameters.Latest release: 23 days ago - 2 stars on GitHub