Error: Unable to locate module 'child_process' in the context of NextJS + Nightmare

Encountering an issue while trying to compile a basic example using Next JS + Nightmare Scraper. Upon attempting to access the page, I am faced with the following error message, and the page fails to load.

PS C:\Users\lucas\Documents\Projects\ProjectTest\pages\nightmare> npm run dev

[email protected] dev C:\Users\lucas\Documents\Projects\ProjectTest next dev

ready - started server on 0.0.0.0:3000, url: http://localhost:3000

event - compiled successfully

event - build page: / wait - compiling... error - ./node_modules/nightmare/lib/nightmare.js:17:0

Module not found: Can't resolve 'child_process' null

Could not find files for / in .next/build-manifest.json

Could not find files for / in .next/build-manifest.json

Error from chokidar (C:): Error: EBUSY: resource busy or locked, lstat 'C:\DumpStack.log.tmp'

Switching to node ./index.js resolves the issue.

The identical error appears when using either nightmare or puppeteer.

index.js

const test = require('nightmare');

function Page() {

    return <div>Test 2</div>
}

export default Page

package.json

{
  "name": "Test",
  "version": "1.0.0",
  "description": "",
  "main": "index.js",
  "scripts": {
    "dev": "next dev"
  },
  "keywords": [],
  "author": "",
  "license": "ISC",
  "dependencies": {
    "nightmare": "^3.0.2",
    "next": "^10.0.6",
    "puppeteer": "^7.1.0",
    "react": "^17.0.1",
    "react-dom": "^17.0.1"
  },
  "devDependencies": {}
}
javascriptweb-scrapingnext.jspuppeteernightmare

Answer №1

The issue arises due to the incompatibility of the nightmare code, designed to operate in a Node.js environment, with the absence of the child_process module on the client side. To prevent this error, you can include a conditional statement to ensure that the code only executes on the server.

if (typeof window === 'undefined') {
    const test = require('nightmare');
}

However, it is important to note that utilizing this code in a webpage may not be suitable as it is specifically intended for server-side execution and may not function correctly in a browser environment.

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