ssh2：模块解析失败：意外字符 '�'

Question

ERROR in ./node_modules/cpu-features/build/Release/cpufeatures.node 1:2
Module parse failed: Unexpected character '�' (1:2)
You may need an appropriate loader to handle this file type, currently no loaders are configured to process this file. See https://webpack.js.org/concepts#loaders
(Source code omitted for this binary file)
 @ ./node_modules/cpu-features/lib/index.js 3:16-60
 @ ./node_modules/ssh2/lib/protocol/constants.js 7:12-35
 @ ./node_modules/ssh2/lib/server.js 26:4-38
 @ ./node_modules/ssh2/lib/index.js 33:10-32
 @ ./src/app.js 3:19-34

ERROR in ./node_modules/ssh2/lib/protocol/crypto/build/Release/sshcrypto.node 1:2
Module parse failed: Unexpected character '�' (1:2)
You may need an appropriate loader to handle this file type, currently no loaders are configured to process this file. See https://webpack.js.org/concepts#loaders
(Source code omitted for this binary file)
 @ ./node_modules/ssh2/lib/protocol/crypto.js 30:12-60
 @ ./node_modules/ssh2/lib/server.js 27:29-60
 @ ./node_modules/ssh2/lib/index.js 33:10-32
 @ ./src/app.js 3:19-34

如何解决？我在 Webpack.org 中找不到合适的加载器

webpack.config.js

const path = require("path");

module.exports = {
  resolve: {
    fallback: {
      fs: false,
      tls: false,
      net: false,
      path: false,
      zlib: false,
      http: false,
      https: false,
      stream: false,
      crypto: false,
      buffer: false,
      util: false,
      assert: false,
      dns: false,
      process: false,
      timers: false,
      url: false,
      child_process: false,
      string_decoder: false,
    },
  },
  entry: "./src/app.js",
  mode: "production",
  output: {
    filename: "app.js",
    path: path.resolve(__dirname, "dist"),
  },
};

app.js

const conf = require("./config.js");
const mysql = require("mysql2");
const { Client } = require("ssh2");

// create an instance of SSH Client
const sshClient = new Client();

const SSHConnection = new Promise((resolve, reject) => {
  sshClient
    .on("ready", () => {
      sshClient.forwardOut(
        conf.forwardConfig.srcHost,
        conf.forwardConfig.srcPort,
        conf.forwardConfig.dstHost,
        conf.forwardConfig.dstPort,
        (err, stream) => {
          if (err) reject(err);

          // create a new DB server object including stream
          const updatedDbServer = {
            ...dbServer,
            stream,
          };
          // connect to mysql
          const connection = mysql.createConnection(updatedDbServer);
          // check for successful connection
          //  resolve or reject the Promise accordingly
          connection.connect((error) => {
            if (error) {
              reject(error);
            }
            resolve(connection);
          });
        }
      );
    })
    .connect(conf.tunnelConfig);
});

SSHConnection.then(
  (resolve) => {
    console.log("ssh resolved");
  },
  (reject) => {
    console.log(`ssh reject: ${reject}`);
  }
);

package.json

{
  "type": "commonjs",
  "private": true,
  "scripts": {
    "build": "webpack",
    "start": "node ./dist/app.js"
  },
  "devDependencies": {
    "dotenv": "^16.0.3",
    "webpack": "^5.77.0",
    "webpack-cli": "^5.0.1"
  },
  "dependencies": {
    "mysql2": "^3.2.0",
    "ssh2": "^1.11.0"
  }
}

Answer 1

要处理 Node.js 附加组件，例如

ssh2

，您需要使用适当的加载器。因为它可以在 Webpack 页面 上找到，所以您可以像下面这样使用

node-loader

：

module.exports = {
  entry: "./src/app.js",
  mode: "production",
  output: {
    filename: "app.js",
    path: path.resolve(__dirname, "dist"),
  },
  module: {
    rules: [
      {
        test: /\.node$/,
        loader: "node-loader",
      },
    ],
  },
};

别忘了安装它：

npm install --save-dev node-loader