Allow-env Packages

Publish multiple editions for your JavaScript packages consistently and easily (e.g. source edition, esnext edition, es2015 edition)

Verify that file or package, be it remote, or local, is a valid ECMAScript Module

Exports the correct PORT and HOSTNAME values for Heroku, AppFog, CloudFoundry, OpenShift, and other service environments

Take a locale and return its start of the week (0 = Sunday, 1 = Monday)