Heroku 上的 mongodb 驱动程序出错：找不到模块'mongodb-core'

Question

我正试图升级我的Node.js Express应用程序到Mongodb的新驱动程序。我的包。Json有"mongodb":"^2.0.40"。它在我的机器上运行良好，并且我能够很好地部署到Heroku(也就是说，没有警告/错误)。但是，应用程序在使用时崩溃，并出现以下错误:

2015-09-14T13:03:52.225525+00:00 heroku[web.1]: Starting process with command `node app.js`
2015-09-14T13:03:52.271972+00:00 heroku[web.1]: Stopping all processes with SIGTERM
2015-09-14T13:03:54.315461+00:00 heroku[web.1]: Process exited with status 143
2015-09-14T13:03:54.701499+00:00 app[web.1]: module.js:338
2015-09-14T13:03:54.701522+00:00 app[web.1]:     throw err;
2015-09-14T13:03:54.701523+00:00 app[web.1]:           ^
2015-09-14T13:03:54.701525+00:00 app[web.1]: Error: Cannot find module 'mongodb-core'
2015-09-14T13:03:54.701526+00:00 app[web.1]:     at Function.Module._resolveFilename (module.js:336:15)
2015-09-14T13:03:54.701527+00:00 app[web.1]:     at Function.Module._load (module.js:278:25)
2015-09-14T13:03:54.701529+00:00 app[web.1]:     at require (module.js:384:17)
2015-09-14T13:03:54.701528+00:00 app[web.1]:     at Module.require (module.js:365:17)
2015-09-14T13:03:54.701531+00:00 app[web.1]:     at Object.<anonymous> (/app/node_modules/mongodb/index.js:2:12)
2015-09-14T13:03:54.701532+00:00 app[web.1]:     at Module._compile (module.js:460:26)
2015-09-14T13:03:54.701533+00:00 app[web.1]:     at Object.Module._extensions..js (module.js:478:10)
2015-09-14T13:03:54.701534+00:00 app[web.1]:     at Module.load (module.js:355:32)
2015-09-14T13:03:54.701535+00:00 app[web.1]:     at Function.Module._load (module.js:310:12)
2015-09-14T13:03:54.701536+00:00 app[web.1]:     at Module.require (module.js:365:17)
2015-09-14T13:03:55.561071+00:00 heroku[web.1]: State changed from starting to crashed
2015-09-14T13:03:55.548974+00:00 heroku[web.1]: Process exited with status 1

我已经尝试了各种版本的mongodb驱动程序，但无济于事。

Answer 1

如果您使用mongodb-core，您应该在package中指定它。Json格式如下:

   "dependencies": {
    "express": "~4.9.x"
    , "pg": "~4.4.x"
    , "mongodb": "2.0.14"
    , "mongodb-core": "~1.0"
  },

push到git后，检查日志:

remote: -----> Build succeeded!
remote:        ├── express@4.9.8
remote:        ├── mongodb@2.0.14
remote:        ├── mongodb-core@1.0.5
remote:        └── pg@4.4.1