如何使用github將Node.js應用程序部署到Heroku

Question

我想將此應用程序部署到https://github.com/thefailtheory/neofreelance我正在http://livecoding.tv頻道上開發到heroku，但遇到錯誤

該應用程序是基本的，它將嘗試解決我每天使用的雲中的自由職業問題

這是日志：

2016-11-22T16:20:34.454131+00:00 app[web.1]: npm ERR! code ELIFECYCLE

2016-11-22T16:20:34.454297+00:00 app[web.1]: npm ERR! neofreelance@1.0.0 start: `node app.js`

2016-11-22T16:20:34.454450+00:00 app[web.1]: npm ERR! Exit status 1

2016-11-22T16:20:34.454616+00:00 app[web.1]: npm ERR! 

2016-11-22T16:20:34.454772+00:00 app[web.1]: npm ERR! Failed at the neofreelance@1.0.0 start script 'node app.js'.

2016-11-22T16:20:34.454931+00:00 app[web.1]: npm ERR! Make sure you have the latest version of node.js and npm installed.

2016-11-22T16:20:34.455081+00:00 app[web.1]: npm ERR! If you do, this is most likely a problem with the neofreelance package,

2016-11-22T16:20:34.455232+00:00 app[web.1]: npm ERR! not with npm itself.

2016-11-22T16:20:34.455378+00:00 app[web.1]: npm ERR! Tell the author that this fails on your system:

2016-11-22T16:20:34.455537+00:00 app[web.1]: npm ERR!     node app.js

2016-11-22T16:20:34.455684+00:00 app[web.1]: npm ERR! You can get information on how to open an issue for this project with:

2016-11-22T16:20:34.455833+00:00 app[web.1]: npm ERR!     npm bugs neofreelance

2016-11-22T16:20:34.456007+00:00 app[web.1]: npm ERR! Or if that isn't available, you can get their info via:

2016-11-22T16:20:34.456156+00:00 app[web.1]: npm ERR!     npm owner ls neofreelance

2016-11-22T16:20:34.456302+00:00 app[web.1]: npm ERR! There is likely additional logging output above.

2016-11-22T16:20:34.459887+00:00 app[web.1]: 

2016-11-22T16:20:34.460174+00:00 app[web.1]: npm ERR! Please include the following file with any support request:

2016-11-22T16:20:34.460356+00:00 app[web.1]: npm ERR!     /app/npm-debug.log

Answer 1

這是因為Heroku在嚴格模式之外使用的Node版本尚不支持塊范圍的聲明（ let ， const ）。

有兩個選擇：

• 添加"use strict"; 在文件的開頭
• 使用var而不是let 。