Bluebird 参考： bluebird [Official] petkaantonov/bluebird: Bluebird is a full featured promise library with unmatched performance – GitHub ドキュメント 参考： Getting Started | bluebird [Official] Promise.promisify 参考： Promise.promisify | bluebird [Official] Webpack compiler instance promisification? – Stack Overflow child_process をプロミス化する 参考： How to promisify Node’s child_process.exec and child_process.execFile functions with Bluebird? – Stack Overflow タグ： JavaScript