of swastika art https://github.com/expressjs/express/commit/bf03e8570237f243e52666029959edc8aa0330f2 Only one with swearing https://github.com/expressjs/express/commit/693e37459a4bdd815279c5253702c98456bd2467 Koa (generators and async) https://github.com/koajs/koa First commit has good examples too https://github.com/koajs/koa/commit/9e167c5ed9c2411723a444ff28b2ccb23817de88