Module is extraneous npm

Question

I've checked that the connect-privkey-to-provider module is in the dependencies. However, it keeps saying Module 'connect-privkey-to-provider' is extraneous npm and cannot find module 'connect-privkey-to-provider'.

What's wrong with my code?

PS C:\Users\1Sun\addition-game-starter> truffle deploy --network klaytn Error: Cannot find module 'connect-privkey-to-provider' at Function.Module._resolveFilename (internal/modules/cjs/loader.js:582:15) at Function.Module._load (internal/modules/cjs/loader.js:508:25) at Module.require (internal/modules/cjs/loader.js:637:17) at require (internal/modules/cjs/helpers.js:22:18) at Object. (C:\Users\1Sun\addition-game-starter\truffle.js:2:29) at Module._compile (internal/modules/cjs/loader.js:701:30) at Object.Module._extensions..js (internal/modules/cjs/loader.js:712:10) at Module.load (internal/modules/cjs/loader.js:600:32) at tryModuleLoad (internal/modules/cjs/loader.js:539:12) at Function.Module._load (internal/modules/cjs/loader.js:531:3) at Module.require (internal/modules/cjs/loader.js:637:17) at require (internal/modules/cjs/helpers.js:22:18) at Function.Config.load (C:\Users\1Sun\AppData\Roaming\npm\node_modules\truffle\build\webpack:\packages\truffle-config\index.js:254:1) at Function.Config.detect (C:\Users\1Sun\AppData\Roaming\npm\node_modules\truffle\build\webpack:\packages\truffle-config\index.js:243:1) at Object.run (C:\Users\1Sun\AppData\Roaming\npm\node_modules\truffle\build\webpack:\packages\truffle-core\lib\commands\migrate.js:35:1) at Command.run (C:\Users\1Sun\AppData\Roaming\npm\node_modules\truffle\build\webpack:\packages\truffle-core\lib\command.js:101:1) at Object. (C:\Users\1Sun\AppData\Roaming\npm\node_modules\truffle\build\webpack:\packages\truffle-core\cli.js:22:1) at webpack_require (C:\Users\1Sun\AppData\Roaming\npm\node_modules\truffle\build\webpack:\webpack\bootstrap 0791995565e53f633c90:19:1) at C:\Users\1Sun\AppData\Roaming\npm\node_modules\truffle\build\webpack:\webpack\bootstrap 0791995565e53f633c90:65:1 at Object. (C:\Users\1Sun\AppData\Roaming\npm\node_modules\truffle\build\cli.bundled.js:71:10) at Module._compile (internal/modules/cjs/loader.js:701:30)

---

package.json

{
  "name": "klay-dapp-boilerplate",
  "version": "0.0.1",
  "description": "boilerplate for klaytn-based app",
  "main": "truffle.js",
  "scripts": {
    "build": "webpack",
    "dev": "webpack-dev-server"
  },
  "dependencies": {
    "caver-js": "^0.0.2-m",
    "connect-privkey-to-provider": "^0.0.3",
    "spin.js": "^4.0.0"
  },
  "devDependencies": {
    "copy-webpack-plugin": "^4.6.0",
    "eslint": "^4.19.1",
    "webpack": "^4.7.0",
    "webpack-cli": "^3.1.1",
    "webpack-dev-server": "^3.1.4"
  },
  "eslintConfig": {
    "env": {
      "browser": true,
      "node": true
    }
  }
}

---

truffle.js

// truffle.js config for klaytn.
const PrivateKeyConnector = require('connect-privkey-to-provider')
const NETWORK_ID = '1001'
const GASLIMIT = '20000000'
const URL ='https://api.baobab.klaytn.net:8651'
const PRIVATE_KEY = '0x80ea7e298ba2cbf484e6c0c0703ccf2ea94be7f8a1a097fc013042b4888a2e80'

module.exports = {
    networks: {
        klaytn: {
            provider: new PrivateKeyConnector(PRIVATE_KEY, URL),
            network_id: NETWORK_ID,
            gas: GASLIMIT,
            gasPrice: null,
        }
    }
}

Error

Answer 1

Your code works fine in my environment. Try to do these:

• Remove node_modules
• Remove package-lock.json
• Update truffle package npm update -g truffle
• Reinstall, using command npm i

After that just change solidity version in contracts folder

pragma solidity ^0.5.0;

Answer 2

In my case for changing some dependencies, I was deleting node_modules, but I had to erase package-lock.json too.

I closed all windows, deleted node_modules folder and package-lock.json and reinstalled it all again with npm install.