Check if the versions defined in a Dart pubspec file are still up to date

version_check.rb

require 'yaml'
require 'net/http'
require 'json'

url = 'https://pub.dev/api/packages/'
local_spec = YAML.load_file('pubspec.yaml')
local_spec["dependencies"].each do |lib, version|
	if !version.is_a? String
    		next
	end
	response = Net::HTTP.get(URI(url+lib))
	puts([lib, version, "->", JSON.parse(response)["latest"]["version"]].join(" "))
end