namespace :javascript do

desc "Build your JavaScript bundle"
task :build do
  system "yarn install && yarn build"
end

end

Rake::Task.enhance()

if Rake::Task.task_defined?(“test:prepare”)

Rake::Task["test:prepare"].enhance(["javascript:build"])

elsif Rake::Task.task_defined?(“db:test:prepare”)

Rake::Task["db:test:prepare"].enhance(["javascript:build"])

end