Heroku 错误。 找不到模块“猫鼬”

Question

出于某种奇怪的原因（我已经在 Heroku 上部署了大约 1.5 年），我的实例决定在尝试再次部署后抛出一个关于未找到“猫鼬”的奇怪错误。 一切都在我的本地服务器上运行，我的 .gitignore 文件忽略了节点模块。 这是一个带有 Expressjs 和 Mongoose 的 React.js 应用程序。

这是我的 Package.json：

    {
  "name": "drg-coming-soon",
  "version": "1.0.0",
  "description": "",
  "main": "index.js",
  "scripts": {
    "build": "webpack",
    "server": "node server/index.js",
    "start": "webpack && node server/index.js",
    "react": "webpack -d --watch"
  },
  "heroku-run-build-script": true,
  "author": "Randy Thomas",
  "license": "ISC",
  "devDependencies": {
    "axios": "^0.18.0",
    "babel-core": "^6.23.1",
    "babel-loader": "^6.3.2",
    "babel-preset-es2015": "^6.22.0",
    "babel-preset-react": "^6.23.0",
    "body-parser": "^1.18.3",
    "express": "^4.15.0",
    "jquery": "^3.1.1",
    "mongoose": "^6.2.7",
    "react-awesome-modal": "^2.0.5",
    "request": "^2.81.0",
    "webpack": "^4.28.3"
  },
  "dependencies": {
    "axios": "^0.18.0",
    "css-loader": "^2.0.1",
    "dotenv": "^6.2.0",
    "file-loader": "^2.0.0",
    "react": "^15.4.2",
    "react-autosuggest": "^9.4.3",
    "react-dom": "^15.4.2",
    "react-image": "^1.5.1",
    "react-router": "^4.3.1",
    "react-router-dom": "^4.3.1",
    "react-scripts": "^2.1.1",
    "style-loader": "^0.23.1",
    "twilio": "^3.33.2",
    "url-loader": "^1.1.2",
    "mongoose": "^6.2.7",
    "webpack": "^4.28.3"
  }
}

这是我的 webpack.config.js

const path = require('path');

const SRC_DIR = path.join(__dirname, '/client/src');
const DIST_DIR = path.join(__dirname, '/client/dist');

module.exports = {
  entry: `${SRC_DIR}/index.js`,
  output: {
    filename: 'bundle.js',
    path: DIST_DIR,
  },
  module: {
    //changed from loaders to rules
    loaders: [
      {
        test: /\.jsx?/,
        include: SRC_DIR,
        loader: 'babel-loader',
        query: {
          presets: [
            '@babel/preset-env',
            '@babel/preset-react'
          ],
        },
      },
    ],
  },
};

这是我的数据库文件夹：

require('dotenv').config();
const mongoose = require('mongoose');
// dev

// process.env.mongourl

mongoose.connect(process.env.mongourl)
  .catch(err => console.log('Mongo connection error', err));


const db = mongoose.connection;
db.on('error', console.error.bind(console, 'connection error:'));
db.once('open', () => {
  console.log('MongoDB has connected');
});

// schemas
const comingSoonSchema = ({
  address: String,
  desc: String,
  sqft: Number,
  bed: String,
  bath: String,
  photoLink: String,
  agent: String,
  price: String,
  year: Number,
  eta: String,
  premarket: String,
  status: String,
  timeStamp: { type: Date, default: Date.now },
})


// models
const ComingSoon = mongoose.model('ComingSoon', comingSoonSchema);

function save(e) {
  console.log(e, "SAVE FUNC");
  const obj = new ComingSoon({
    address: e.address,
    desc: e.desc,
    sqft: e.sqft,
    bed: e.bed,
    bath: e.bath,
    photoLink: e.photoLink,
    agent: e.agent,
    price: e.price,
    year: e.year,
    eta: e.eta,
    status: e.status,
    premarket: e.premarket
  })
  obj.save();
  console.log("Data saved to MongoDB Database");
}

const funcs = {
  save, ComingSoon,
};
module.exports = funcs;

最后是持续错误：

2022-03-23T01:33:06.685994+00:00 heroku[web.1]: Starting process with command `npm start`
2022-03-23T01:33:07.919434+00:00 app[web.1]:
2022-03-23T01:33:07.919447+00:00 app[web.1]: > drg-coming-soon@1.0.0 start
2022-03-23T01:33:07.919448+00:00 app[web.1]: > webpack && node server/index.js
2022-03-23T01:33:07.919448+00:00 app[web.1]:
2022-03-23T01:33:07.965317+00:00 app[web.1]: One CLI for webpack must be installed. These are recommended choices, delivered as separate packages:
2022-03-23T01:33:07.965319+00:00 app[web.1]: - webpack-cli (https://github.com/webpack/webpack-cli)
2022-03-23T01:33:07.965319+00:00 app[web.1]: The original webpack full-featured CLI.
2022-03-23T01:33:07.965784+00:00 app[web.1]: We will use "npm" to install the CLI via "npm install -D".
2022-03-23T01:33:08.131129+00:00 app[web.1]: Do you want to install 'webpack-cli' (yes/no): node:internal/modules/cjs/loader:936
2022-03-23T01:33:08.131131+00:00 app[web.1]: throw err;
2022-03-23T01:33:08.131131+00:00 app[web.1]: ^
2022-03-23T01:33:08.131132+00:00 app[web.1]:
2022-03-23T01:33:08.131132+00:00 app[web.1]: Error: Cannot find module 'mongoose'
2022-03-23T01:33:08.131132+00:00 app[web.1]: Require stack:
2022-03-23T01:33:08.131133+00:00 app[web.1]: - /app/database/index.js
2022-03-23T01:33:08.131136+00:00 app[web.1]: - /app/server/index.js
2022-03-23T01:33:08.131136+00:00 app[web.1]: at Function.Module._resolveFilename (node:internal/modules/cjs/loader:933:15)
2022-03-23T01:33:08.131137+00:00 app[web.1]: at Function.Module._load (node:internal/modules/cjs/loader:778:27)
2022-03-23T01:33:08.131137+00:00 app[web.1]: at Module.require (node:internal/modules/cjs/loader:1005:19)
2022-03-23T01:33:08.131138+00:00 app[web.1]: at require (node:internal/modules/cjs/helpers:102:18)
2022-03-23T01:33:08.131138+00:00 app[web.1]: at Object.<anonymous> (/app/database/index.js:2:18)
2022-03-23T01:33:08.131139+00:00 app[web.1]: at Module._compile (node:internal/modules/cjs/loader:1103:14)
2022-03-23T01:33:08.131139+00:00 app[web.1]: at Object.Module._extensions..js (node:internal/modules/cjs/loader:1157:10)
2022-03-23T01:33:08.131140+00:00 app[web.1]: at Module.load (node:internal/modules/cjs/loader:981:32)
2022-03-23T01:33:08.131140+00:00 app[web.1]: at Function.Module._load (node:internal/modules/cjs/loader:822:12)
2022-03-23T01:33:08.131140+00:00 app[web.1]: at Module.require (node:internal/modules/cjs/loader:1005:19) {
2022-03-23T01:33:08.131141+00:00 app[web.1]: code: 'MODULE_NOT_FOUND',
2022-03-23T01:33:08.131141+00:00 app[web.1]: requireStack: [ '/app/database/index.js', '/app/server/index.js' ]
2022-03-23T01:33:08.131142+00:00 app[web.1]: }
2022-03-23T01:33:08.265674+00:00 heroku[web.1]: Process exited with status 1
2022-03-23T01:33:08.447674+00:00 heroku[web.1]: State changed from starting to crashed
2022-03-23T01:32:58.202124+00:00 app[api]: Release v158 created by user bookingrlthomas@gmail.com
2022-03-23T01:32:58.202124+00:00 app[api]: Deploy ad551b5e by user bookingrlthomas@gmail.com
2022-03-23T01:33:00.927332+00:00 app[api]: Deploy ad551b5e by user bookingrlthomas@gmail.com
2022-03-23T01:33:00.927332+00:00 app[api]: Release v159 created by user bookingrlthomas@gmail.com
2022-03-23T01:33:51.331557+00:00 heroku[router]: at=error code=H10 desc="App crashed" method=GET path="/" host=drgcomingsoonlistings.herokuapp.com request_id=fd27788b-e166-49fd-8830-b0da493e7e62 fwd="47.45.81.207" dyno= connect= service= status=503 bytes= protocol=https
2022-03-23T01:33:52.166634+00:00 heroku[router]: at=error code=H10 desc="App crashed" method=GET path="/favicon.ico" host=drgcomingsoonlistings.herokuapp.com request_id=4967681e-a5a9-41b9-9129-65258f9b9983 fwd="47.45.81.207" dyno= connect= service= status=503 bytes= protocol=https

Answer 1

该错误很可能来自您的“devDependencies”中有猫鼬这一事实。 尝试将其移至您的“依赖项”，然后运行 ​​npm install。 您可能会在“devDependencies”下遇到 express 和其他一些问题。 希望这可以帮助。

Answer 2

这没有任何意义，但如果 mongoose 既在开发依赖项中又在依赖项中，heroku 就会发疯。 它只能在依赖项中。 从开发依赖项中删除它后，执行 npm install。 它将毫无问题地工作。