一般进入Maintenance LTS(Long Term Support)阶段的版本比较适合于生产环境。从下图来看当前生产环境可用的最高版本是6.x。而对Async/Await的支持是从v7.6.0开始的，所以现在还不适合在生产环境使用。
另：LTS版本一般是偶数版本
In fact, the next LTS release is chosen from a specific point release of the current version, and this will usually be an even version release (v6, v8).
Release schedule
| Release | Status | Codename | Initial Release | Active LTS Start | Maintenance LTS Start | End-of-life |
|---|---|---|---|---|---|---|
| 6.x | Maintenance LTS | Boron | 2016-04-26 | 2016-10-18 | 2018-04-30 | April 2019 |
| 8.x | Active LTS | Carbon | 2017-05-30 | 2017-10-31 | April 2019 | December 20191 |
| 10.x | Current Release | Dubnium | 2018-04-24 | October 2018 | April 2020 | April 2021 |
| 11.x | Pending | 2018-10-23 | June 2019 |
来源：https://github.com/nodejs/Release#release-schedule
LTS(Long Term Support). Once a Stable release line becomes LTS, no new features or breaking changes will be added to that release.