在Heroku上找不到模块'ejs' – Node.js应用程序
我的应用程序在本地工作，但是当我部署到Heroku时，出现了一个问题。 这是我的错误，看来这个错误是由于我添加EJS后我没有做的事情造成的。
2014-01-06T16:53:39.285571+00:00 app[web.1]: module.js:340 2014-01-06T16:53:39.285956+00:00 app[web.1]: throw err; 2014-01-06T16:53:39.286233+00:00 app[web.1]: ^ 2014-01-06T16:53:39.288439+00:00 app[web.1]: Error: Cannot find module 'ejs' 2014-01-06T16:53:39.288439+00:00 app[web.1]: at Function.Module._resolveFilename (module.js:338:15) 2014-01-06T16:53:39.288439+00:00 app[web.1]: at Function.Module._load (module.js:280:25) 2014-01-06T16:53:39.288439+00:00 app[web.1]: at require (module.js:380:17) 2014-01-06T16:53:39.288439+00:00 app[web.1]: at Object.<anonymous> (/app/app.js:28:20) 2014-01-06T16:53:39.288439+00:00 app[web.1]: at Module._compile (module.js:456:26) 2014-01-06T16:53:39.288439+00:00 app[web.1]: at Module.require (module.js:364:17) 2014-01-06T16:53:39.288439+00:00 app[web.1]: at Object.Module._extensions..js (module.js:474:10) 2014-01-06T16:53:39.288439+00:00 app[web.1]: at Module.load (module.js:356:32) 2014-01-06T16:53:39.288439+00:00 app[web.1]: at Function.Module._load (module.js:312:12) 2014-01-06T16:53:39.288617+00:00 app[web.1]: at Function.Module.runMain (module.js:497:10) 2014-01-06T16:53:40.650512+00:00 heroku[web.1]: State changed from starting to crashed 2014-01-06T16:53:40.637888+00:00 heroku[web.1]: Process exited with status 8 2014-01-06T16:53:40.651134+00:00 heroku[web.1]: State changed from crashed to starting 2014-01-06T16:53:42.536106+00:00 heroku[web.1]: Starting process with command `node app.js` 2014-01-06T16:53:43.447621+00:00 app[web.1]: 2014-01-06T16:53:43.449816+00:00 app[web.1]: Error: Cannot find module 'ejs' 2014-01-06T16:53:43.447621+00:00 app[web.1]: module.js:340 2014-01-06T16:53:43.447926+00:00 app[web.1]: throw err; 2014-01-06T16:53:43.447926+00:00 app[web.1]: ^ 2014-01-06T16:53:43.449816+00:00 app[web.1]: at Function.Module._resolveFilename (module.js:338:15) 2014-01-06T16:53:43.449816+00:00 app[web.1]: at Function.Module._load (module.js:280:25) 2014-01-06T16:53:43.449816+00:00 app[web.1]: at Module.require (module.js:364:17) 2014-01-06T16:53:43.449816+00:00 app[web.1]: at Module._compile (module.js:456:26) 2014-01-06T16:53:43.449816+00:00 app[web.1]: at Object.Module._extensions..js (module.js:474:10) 2014-01-06T16:53:43.449816+00:00 app[web.1]: at Module.load (module.js:356:32) 2014-01-06T16:53:43.449816+00:00 app[web.1]: at Function.Module._load (module.js:312:12) 2014-01-06T16:53:43.449990+00:00 app[web.1]: at Function.Module.runMain (module.js:497:10) 2014-01-06T16:53:43.449816+00:00 app[web.1]: at require (module.js:380:17) 2014-01-06T16:53:43.449816+00:00 app[web.1]: at Object.<anonymous> (/app/app.js:28:20) 2014-01-06T16:53:44.712427+00:00 heroku[web.1]: State changed from starting to crashed 2014-01-06T16:53:44.700963+00:00 heroku[web.1]: Process exited with status 8 2014-01-06T16:54:13.976150+00:00 heroku[router]: at=error code=H10 desc="App crashed" method=GET path=/favicon.ico host=bruxzir-express.herokuapp.com fwd="98.173.1.66" dyno= connect= service= status=503 bytes= 2014-01-06T16:54:29.109297+00:00 heroku[router]: at=error code=H10 desc="App crashed" method=GET path=/ host=bruxzir-express.herokuapp.com fwd="98.173.1.66" dyno= connect= service= status=503 bytes= 2014-01-06T16:54:29.243506+00:00 heroku[router]: at=error code=H10 desc="App crashed" method=GET path=/favicon.ico host=bruxzir-express.herokuapp.com fwd="98.173.1.66" dyno= connect= service= status=503 bytes= 所以在阅读这个问题后，我需要在package.json添加该依赖项。 而对于ejs的版本，我运行了npm list并得到了这个，看起来可能会有更多的错误需要解决。
application-name@0.0.1 /Users/juan.gallardo/Desktop/myfiles/test-projects/bruxzir-express-test ├── ejs@0.8.5 extraneous ├─┬ express@3.4.4 │ ├── buffer-crc32@0.2.1 │ ├─┬ commander@1.3.2 │ │ └── keypress@0.1.0 │ ├─┬ connect@2.11.0 │ │ ├── bytes@0.2.1 │ │ ├── methods@0.0.1 │ │ ├─┬ multiparty@2.2.0 │ │ │ ├─┬ readable-stream@1.1.9 │ │ │ │ ├── core-util-is@1.0.0 │ │ │ │ └── debuglog@0.0.2 │ │ │ └── stream-counter@0.2.0 │ │ ├── negotiator@0.3.0 │ │ ├── pause@0.0.1 │ │ ├── qs@0.6.5 │ │ ├── raw-body@0.0.3 │ │ └── uid2@0.0.3 │ ├── cookie@0.1.0 │ ├── cookie-signature@1.0.1 │ ├── debug@0.7.4 │ ├── fresh@0.2.0 │ ├── methods@0.1.0 │ ├── mkdirp@0.3.5 │ ├── range-parser@0.0.4 │ └─┬ send@0.1.4 │ └── mime@1.2.11 ├─┬ jade@1.0.0 │ ├── character-parser@1.2.0 │ ├── commander@2.0.0 │ ├─┬ constantinople@1.0.2 │ │ └─┬ uglify-js@2.4.8 │ │ ├── async@0.2.9 │ │ ├─┬ optimist@0.3.7 │ │ │ └── wordwrap@0.0.2 │ │ ├─┬ source-map@0.1.31 │ │ │ └── amdefine@0.1.0 │ │ └── uglify-to-browserify@1.0.1 │ ├── mkdirp@0.3.5 │ ├─┬ monocle@1.1.50 │ │ └─┬ readdirp@0.2.5 │ │ └─┬ minimatch@0.2.14 │ │ ├── lru-cache@2.5.0 │ │ └── sigmund@1.0.0 │ ├─┬ transformers@2.1.0 │ │ ├─┬ css@1.0.8 │ │ │ ├── css-parse@1.0.4 │ │ │ └── css-stringify@1.0.5 │ │ ├─┬ promise@2.0.0 │ │ │ └── is-promise@1.0.0 │ │ └─┬ uglify-js@2.2.5 │ │ ├─┬ optimist@0.3.7 │ │ │ └── wordwrap@0.0.2 │ │ └─┬ source-map@0.1.31 │ │ └── amdefine@0.1.0 │ └─┬ with@2.0.0 │ └─┬ uglify-js@2.4.0 │ ├── async@0.2.9 │ ├─┬ optimist@0.3.7 │ │ └── wordwrap@0.0.2 │ ├─┬ source-map@0.1.31 │ │ └── amdefine@0.1.0 │ └── uglify-to-browserify@1.0.1 ├── simple-recaptcha@0.0.3 extraneous └─┬ stylus@0.41.3 ├── cssom@0.2.5 ├── debug@0.7.4 ├── mkdirp@0.3.5 └── sax@0.5.8 npm ERR! extraneous: ejs@0.8.5 /Users/juan.gallardo/Desktop/myfiles/test-projects/bruxzir-express-test/node_modules/ejs npm ERR! extraneous: simple-recaptcha@0.0.3 /Users/juan.gallardo/Desktop/myfiles/test-projects/bruxzir-express-test/node_modules/simple-recaptcha npm ERR! not ok code 0
我解决了这个问题，把EJS和它的版本列入我的package.json 。
"ejs": "0.8.5"
如果你不知道你有的EJS版本，我发现我的方式是运行npm list 。
这里是我目前的整个文件，如果你好奇它是如何适合在一起部署在heroku上。
{ "name": "application-name", "version": "0.0.1", "private": true, "scripts": { "start": "node app.js" }, "dependencies": { "express": "3.4.4", "jade": "*", "stylus": "*", "ejs": "0.8.5" }, "engines": { "node": "0.10.1", "npm": "1.3.14" } }