Whitelist package files (#20)
Whitelist package files (#20)

PR-URL: https://github.com/npm/npm-package-arg/pull/20
Credit: da39a3ee5e6b4b0d3255bfef95601890afd80709@dguettler 
Reviewed-By: da39a3ee5e6b4b0d3255bfef95601890afd80709@zkat
npm/npm-package-arg