Question

我正在开发一个应用程序，它使用VueJS显示视图，ExpressJS充当服务器。

到目前为止在本地工作正常，但在Heroku上成功部署后，它不会加载应用程序并使dyno崩溃。

我的文件夹结构是这样的：

项目根目录
- 客户端
  - package.json for client
- 服务器
  - package.json for server
- package.json告诉Heroku在两个文件夹中安装依赖

这是Heroku引用构建整个应用程序的package.json：

{
    "name": "my-app",
    "version": "0.1.0",
    "scripts": {
        "postinstall": "npm install --prefix server && npm install --prefix client"
    }
}

服务器的package.json：

{
  "name": "server",
  "version": "1.0.0",
  "description": "",
  "main": "./src/app.js",
  "scripts": {
      "start": "./node_modules/nodemon/bin/nodemon.js src/app.js --exec 'npm run lint && node'",
  "lint": "./node_modules/.bin/eslint **/*.js"
  },
  "keywords": [],
  "author": "",
  "license": "ISC",
  "dependencies": {
  "body-parser": "^1.18.2",
  "cors": "^2.8.4",
  "eslint": "^4.12.1",
  "express": "^4.16.2",
  "morgan": "^1.9.0",
  "nodemon": "^1.12.5",
  "pg": "^7.4.0",
  "sequelize": "^4.27.0"
},
"devDependencies": {
    "eslint-config-standard": "^10.2.1",
    "eslint-plugin-import": "^2.8.0",
    "eslint-plugin-node": "^5.2.1",
    "eslint-plugin-promise": "^3.6.0",
    "eslint-plugin-standard": "^3.0.1"
}
}

我检查了日志，问题出现在eslint库中，Heroku在我的项目中找不到。关于如何解决这个问题的任何想法？

2017-12-08T14:55:35.408127+00:00 app[web.1]: Cannot find module 'eslint-config-standard'
2017-12-08T14:55:35.408145+00:00 app[web.1]: Referenced from: /app/server/.eslintrc.js
2017-12-08T14:55:35.408945+00:00 app[web.1]: Error: Cannot find module 'eslint-config-standard'
2017-12-08T14:55:35.408947+00:00 app[web.1]: Referenced from: /app/server/.eslintrc.js
2017-12-08T14:55:35.408948+00:00 app[web.1]:     at ModuleResolver.resolve (/app/server/node_modules/eslint/lib/util/module-resolver.js:74:19)
2017-12-08T14:55:35.408949+00:00 app[web.1]:     at resolve (/app/server/node_modules/eslint/lib/config/config-file.js:471:25)
2017-12-08T14:55:35.408950+00:00 app[web.1]:     at load (/app/server/node_modules/eslint/lib/config/config-file.js:542:26)
2017-12-08T14:55:35.408951+00:00 app[web.1]:     at configExtends.reduceRight (/app/server/node_modules/eslint/lib/config/config-file.js:421:36)
2017-12-08T14:55:35.408951+00:00 app[web.1]:     at Array.reduceRight (<anonymous>)
2017-12-08T14:55:35.408952+00:00 app[web.1]:     at applyExtends (/app/server/node_modules/eslint/lib/config/config-file.js:403:28)
2017-12-08T14:55:35.408953+00:00 app[web.1]:     at loadFromDisk (/app/server/node_modules/eslint/lib/config/config-file.js:514:22)
2017-12-08T14:55:35.408953+00:00 app[web.1]:     at Object.load (/app/server/node_modules/eslint/lib/config/config-file.js:550:20)
2017-12-08T14:55:35.408954+00:00 app[web.1]:     at Config.getLocalConfigHierarchy (/app/server/node_modules/eslint/lib/config.js:228:44)
2017-12-08T14:55:35.408955+00:00 app[web.1]:     at Config.getConfigHierarchy (/app/server/node_modules/eslint/lib/config.js:180:43)
2017-12-08T14:55:35.464317+00:00 app[web.1]: npm ERR! code ELIFECYCLE
2017-12-08T14:55:35.464681+00:00 app[web.1]: npm ERR! errno 1
2017-12-08T14:55:35.466080+00:00 app[web.1]: npm ERR! server@1.0.0 lint: `eslint **/*.js`
2017-12-08T14:55:35.466205+00:00 app[web.1]: npm ERR! Exit status 1
2017-12-08T14:55:35.466413+00:00 app[web.1]: npm ERR! 
2017-12-08T14:55:35.466555+00:00 app[web.1]: npm ERR! Failed at the server@1.0.0 lint script.
2017-12-08T14:55:35.466726+00:00 app[web.1]: npm ERR! This is probably not a problem with npm. There is likely additional logging output above.
2017-12-08T14:55:35.491352+00:00 app[web.1]: 
2017-12-08T14:55:35.491535+00:00 app[web.1]: npm ERR! A complete log of this run can be found in:
2017-12-08T14:55:35.491648+00:00 app[web.1]: npm ERR!     /app/.npm/_logs/2017-12-08T14_55_35_468Z-debug.log
2017-12-08T14:55:35.506231+00:00 app[web.1]: [nodemon] app crashed - waiting for file changes before starting...
2017-12-08T14:56:08.700333+00:00 heroku[router]: at=error code=H20 desc="App boot timeout" method=GET path="/status" host=babbelbord.herokuapp.com request_id=f86a8552-14b5-477c-b79d-d575ad30bffa fwd="84.81.81.130" dyno= connect= service= status=503 bytes= protocol=https

Answer 1

感谢Heroku的支持，找到了答案。问题是我的依赖项是在package.json文件的devDependencies中定义的，而它们应该在dependencies中声明，以便Heroku正常工作。

Answer 2

您似乎是在eslint-config-standard内引用/app/server/.eslintrc.js，但是您的package.json没有任何依赖项。

您将需要运行npm install eslint-config-standard --save，这将在您的package.json中创建一个依赖项。然后你应该保存以提交更改并再次部署到heroku。

因为你没有在package.json中声明你的依赖，你的dyno将不知道安装它。我怀疑您只是忘记将--save标记添加到原始npm install，因此它只会安装到您的node_modules文件夹中而不会在package.json中输入。< / p>

Heroku应用程序因导入错误导致

2 个答案: