require 'json'

# Automatically create an atomic commit of the version file update
# and create a new tag.
automate_git :actions => [:commit, :tag]

file = './package.json'

read_version do
  doc = JSON.load File.read file
  doc['version']
end

write_version do |currentVersion, nextVersion|
  doc = JSON.load File.read file
  doc['version'] = nextVersion.to_s
  File.open(file, 'w') {|f| f.write JSON.pretty_generate(doc) }
end