Question

我有一个表单，我提交图像并将其上传到Firebase。我在本地构建了这个项目，但是当我把它推到Heroku时它会中断。

快递：

var gcs = require( 'multer-gcs' );
var storage = gcs({
    filename    : function( req, file, cb ) {
      cb( null, file.fieldname + '-' + Date.now() );
    },
    bucket      : 'mybucket.appspot.com', // Required : bucket name to upload 
    projectId      : 'mybucket', // Required : Google project ID 
    keyFilename : './mybucket-firebase-adminsdk-4oyba-xee555bbgr.json', // Required : JSON credentials file for Google Cloud Storage 
    acl : 'publicread' // Optional : Defaults to private 
});

const multer = require('multer');
var upload = multer({storage: storage});

app.post('/sell', upload.any(), homeController.postSellPage);

第一个错误代码（来自Heroku Logs）：

Error: Cannot find module 'multer-gcs'
at Function.Module._resolveFilename (module.js:469:15)
at Function.Module._load (module.js:417:25)
at Module.require (module.js:497:17)
at require (internal/module.js:20:19)
at Module._compile (module.js:570:32)
at Object.Module._extensions..js (module.js:579:10)
at Module.load (module.js:487:32)
at Object.<anonymous> (/app/app.js:22:11)
at Function.Module._load (module.js:438:3)
at Module.runMain (module.js:604:10)
at run (bootstrap_node.js:394:7)
at tryModuleLoad (module.js:446:12)
at startup (bootstrap_node.js:149:9)
at bootstrap_node.js:509:3

然后我运行以下内容以更新我的package.json：npm install multer-gcs --save，并安装了它，同时向我发送此消息：

deprecated gcloud@0.36.0: gcloud has been renamed to google-cloud. To get new features and bug fixes, you must use the new package.

我不知道如何处理该消息，所以除了在提交新的package.json之后重新推送到heroku之外，我没有做任何事情。我遇到了以下问题：

Build failed

Outdated Yarn lockfile

Your application contains a Yarn lockfile (yarn.lock) which does not
match the dependencies in package.json. This can happen if you use npm
to install or update a dependency instead of Yarn.

Please run the following command in your application directory and check
in the new yarn.lock file:

$ yarn install
$ git add yarn.lock
$ git commit -m "Updated Yarn lockfile"
$ git push heroku master

https://kb.heroku.com/why-is-my-node-js-build-failing-because-of-an-outdated-yarn-lockfile

然后我跑了yarn install，但得到了

The engine "node" is incompatible with this module. Expected version "6.9.5".
Found incompatible module
Visit https://yarnpkg.com/en/docs/cli/install for documentation about this command.

所以我查看并在package.json中有以下内容，其中包含节点6.9.5，所以我认为我在这方面没问题。

  "engines": {
    "node": "6.9.5",
    "npm": "4.6.1",
    "yarn": "1.3.2"
  },

然后根据有关同一问题的帖子运行yarn install --ignore-engines。这给了我以下内容：

/Users/user/path/node_modules/gcloud/node_modules/grpc: Command failed.
Exit code: 127
Command: ./node_modules/.bin/node-pre-gyp install --fallback-to-build

我尝试根据其他帖子运行此命令npm install --unsafe-perm，但grpc再次出现此问题。

我很乐意得到关于如何让heroku接受/运行构建的任何帮助，因为我很难接受这个。如果需要澄清，请告诉我。

根据要求，package.json：

{
  "name": "App Name",
  "version": "0.0.2",
  "description": "Amazing Application",
  "engines": {
    "node": "6.9.5",
    "npm": "4.6.1",
    "yarn": "1.3.2"
  },
  "repository": {
    "type": "git",
    "url": "https://github.com/amazing_app.git"
  },
  "author": "Example",
  "license": "Example",
  "scripts": {
    "start": "node app.js",
    "test": "mocha --reporter spec",
    "postinstall": "npm rebuild node-sass"
  },
  "dependencies": {
    "aws-sdk": "^2.46.0",
    "bcrypt-nodejs": "^0.0.3",
    "bluebird": "^3.4.7",
    "body-parser": "^1.15.2",
    "chalk": "^1.1.3",
    "cheerio": "^0.22.0",
    "clockwork": "^0.1.4",
    "compression": "^1.6.2",
    "connect-mongo": "^1.3.2",
    "dotenv": "^4.0.0",
    "errorhandler": "^1.4.3",
    "express": "^4.14.0",
    "express-flash": "^0.0.2",
    "express-session": "^1.14.2",
    "express-status-monitor": "^0.1.5",
    "express-validator": "^3.1.2",
    "fbgraph": "^1.3.0",
    "firebase": "^3.9.0",
    "firebase-admin": "^4.2.1",
    "github": "^9.2.0",
    "grpc": "1.3.8",
    "instagram-node": "^0.5.8",
    "lastfm": "^0.9.2",
    "lob": "^3.9.0",
    "lusca": "^1.4.1",
    "mongoose": "^4.6.6",
    "morgan": "^1.7.0",
    "multer": "^1.3.0",
    "multer-gcs": "^1.0.2",
    "node-base64-image": "^1.0.3",
    "node-foursquare": "^0.3.0",
    "node-linkedin": "^0.5.4",
    "node-sass-middleware": "^0.11.0",
    "nodemailer": "^3.1.7",
    "passport": "0.3.2",
    "passport-facebook": "^2.1.1",
    "passport-github": "^1.1.0",
    "passport-google-oauth": "^1.0.0",
    "passport-instagram": "^1.0.0",
    "passport-linkedin-oauth2": "^1.4.1",
    "passport-local": "^1.0.0",
    "passport-oauth": "^1.0.0",
    "passport-openid": "^0.4.0",
    "passport-twitter": "^1.0.4",
    "paypal-rest-sdk": "^1.7.0",
    "pug": "^2.0.0-beta6",
    "request": "^2.78.0",
    "stripe": "^4.12.0",
    "tumblr.js": "^1.1.1",
    "twilio": "^3.3.1-edge",
    "twit": "^2.2.5",
    "validator": "^7.0.0"
  },
  "devDependencies": {
    "chai": "^3.5.0",
    "eslint": "^3.9.1",
    "eslint-config-airbnb-base": "^11.0.0",
    "eslint-plugin-import": "^2.1.0",
    "mocha": "^3.1.2",
    "supertest": "^3.0.0"
  },
  "eslintConfig": {
    "extends": "airbnb-base",
    "rules": {
      "comma-dangle": 0,
      "consistent-return": 0,
      "no-param-reassign": 0,
      "no-underscore-dangle": 0,
      "no-shadow": 0,
      "no-console": 0,
      "no-plusplus": 0
    }
  }
}

**注意：**只有当我取消注释Express下的内容时才会中断（如上所示）。

更新

当我使用AWS与Multer var multerS3 = require('multer-s3');var s3 = new aws.S3({});时，应用程序将成功发布到Heroku，因此它必须是GCS及其依赖项

Answer 1

按照以下步骤

删除yarn.lock文件
添加新的Aptfile，内容低于
```
gcc
build-essential
```

使用以下命令

添加apt buildpack

heroku buildpacks:add --index 1 https://github.com/heroku/heroku-buildpack-apt

完成后，再次推送到heroku，现在它应该可以正常工作

Answer 2

不是100％肯定，但需要是否包含yarn.lock文件？我知道它会将您的依赖项锁定在您使用的确切版本上，但在大多数情况下没有它你应该没问题吗？

如果你去git rm yarn.lock，heroku在理论上可能会更喜欢你。

也可能是你的node_modules中的某些东西被某种程度上破坏了（我不是100％确定这是怎么发生的）或者你的yarn.lock有问题。您可以尝试rm这两个并重新运行yarn install

本地版本的代码可以工作，但在推送到heroku时会中断 - multer gcs

2 个答案: