Module not found: Error can't resolve 'child_process', how to fix?

node.js typescript npm jupyter-lab
55,294

Solution 1

just put in package.json

"browser":{
"child_process": false
}

are you using webpack

Solution 2

I got a similar error while trying to run storybook.js which uses webpack.

For Webpack

You can add the following to the webpack's config to fix the build -

// webpack.config.js
...,
node: {
    child_process: "empty"
    // fs: "empty", // if unable to resolve "fs"
},

You can also set other conflicting modules to "empty" if they are responsible for breaking the build.

Reference for Webpack's config.node

Solution 3

In newer versions I used:

// webpack.config.js
...,
resolve: {
    extensions: [".ts", ".js"],
    fallback: {
      "child_process": false,
      // and also other packages that are not found
    }
  },

Solution 4

Randomly Got this issue while using next.js I got it resolved by clearing out,

.next
node_modules

folders Guess it may work for people getting this client process error in next js

Solution 5

I got this in next.js after importing path and fs in a page.

Solved it by placing them in the getStaticProps() function.

Share:
55,294
OneTwo
Author by

OneTwo

Updated on January 07, 2022

Comments

  • OneTwo
    OneTwo over 2 years

    I'm trying to create a JupyterLab extension, it uses typescript.

    I've successfully added the package "@types/node" allowing me to use packages such as 'require('http')'.

    But as soon as I try to use child process, using 'require("child_process")' I get the following error when trying to build the extension.

    ModuleNotFoundError: Module not found: Error: Can't resolve 'child_process' in '/home/fionn/anaconda3/envs/jupyterlab-ext/share/jupyter/lab/staging/node_modules/jupyerlab_xkdc/lib'
    at factory.create (/home/fionn/anaconda3/envs/jupyterlab-ext/share/jupyter/lab/staging/node_modules/webpack/lib/Compilation.js:535:10)
    at factory (/home/fionn/anaconda3/envs/jupyterlab-ext/share/jupyter/lab/staging/node_modules/webpack/lib/NormalModuleFactory.js:397:22)
    at resolver (/home/fionn/anaconda3/envs/jupyterlab-ext/share/jupyter/lab/staging/node_modules/webpack/lib/NormalModuleFactory.js:130:21)
    at asyncLib.parallel (/home/fionn/anaconda3/envs/jupyterlab-ext/share/jupyter/lab/staging/node_modules/webpack/lib/NormalModuleFactory.js:224:22)
    at /home/fionn/anaconda3/envs/jupyterlab-ext/share/jupyter/lab/staging/node_modules/neo-async/async.js:2825:7
    at /home/fionn/anaconda3/envs/jupyterlab-ext/share/jupyter/lab/staging/node_modules/neo-async/async.js:6886:13
    at normalResolver.resolve (/home/fionn/anaconda3/envs/jupyterlab-ext/share/jupyter/lab/staging/node_modules/webpack/lib/NormalModuleFactory.js:214:25)
    at doResolve (/home/fionn/anaconda3/envs/jupyterlab-ext/share/jupyter/lab/staging/node_modules/enhanced-resolve/lib/Resolver.js:184:12)
    at hook.callAsync (/home/fionn/anaconda3/envs/jupyterlab-ext/share/jupyter/lab/staging/node_modules/enhanced-resolve/lib/Resolver.js:238:5)
    at _fn0 (eval at create (/home/fionn/anaconda3/envs/jupyterlab-ext/share/jupyter/lab/staging/node_modules/tapable/lib/HookCodeFactory.js:32:10), <anonymous>:15:1)
    at resolver.doResolve (/home/fionn/anaconda3/envs/jupyterlab-ext/share/jupyter/lab/staging/node_modules/enhanced-resolve/lib/UnsafeCachePlugin.js:37:5)
    at hook.callAsync (/home/fionn/anaconda3/envs/jupyterlab-ext/share/jupyter/lab/staging/node_modules/enhanced-resolve/lib/Resolver.js:238:5)
    at _fn0 (eval at create (/home/fionn/anaconda3/envs/jupyterlab-ext/share/jupyter/lab/staging/node_modules/tapable/lib/HookCodeFactory.js:32:10), <anonymous>:15:1)
    at hook.callAsync (/home/fionn/anaconda3/envs/jupyterlab-ext/share/jupyter/lab/staging/node_modules/enhanced-resolve/lib/Resolver.js:238:5)
    at _fn0 (eval at create (/home/fionn/anaconda3/envs/jupyterlab-ext/share/jupyter/lab/staging/node_modules/tapable/lib/HookCodeFactory.js:32:10), <anonymous>:12:1)
    at resolver.doResolve (/home/fionn/anaconda3/envs/jupyterlab-ext/share/jupyter/lab/staging/node_modules/enhanced-resolve/lib/DescriptionFilePlugin.js:42:38)
    at hook.callAsync (/home/fionn/anaconda3/envs/jupyterlab-ext/share/jupyter/lab/staging/node_modules/enhanced-resolve/lib/Resolver.js:238:5)
    at _fn41 (eval at create (/home/fionn/anaconda3/envs/jupyterlab-ext/share/jupyter/lab/staging/node_modules/tapable/lib/HookCodeFactory.js:32:10), <anonymous>:381:1)
    at resolver.doResolve (/home/fionn/anaconda3/envs/jupyterlab-ext/share/jupyter/lab/staging/node_modules/enhanced-resolve/lib/ModuleKindPlugin.js:23:37)
    at hook.callAsync (/home/fionn/anaconda3/envs/jupyterlab-ext/share/jupyter/lab/staging/node_modules/enhanced-resolve/lib/Resolver.js:238:5)
    at _fn0 (eval at create (/home/fionn/anaconda3/envs/jupyterlab-ext/share/jupyter/lab/staging/node_modules/tapable/lib/HookCodeFactory.js:32:10), <anonymous>:15:1)
    at hook.callAsync (/home/fionn/anaconda3/envs/jupyterlab-ext/share/jupyter/lab/staging/node_modules/enhanced-resolve/lib/Resolver.js:238:5)
    at _fn0 (eval at create (/home/fionn/anaconda3/envs/jupyterlab-ext/share/jupyter/lab/staging/node_modules/tapable/lib/HookCodeFactory.js:32:10), <anonymous>:15:1)
    at args (/home/fionn/anaconda3/envs/jupyterlab-ext/share/jupyter/lab/staging/node_modules/enhanced-resolve/lib/forEachBail.js:30:14)
    at hook.callAsync (/home/fionn/anaconda3/envs/jupyterlab-ext/share/jupyter/lab/staging/node_modules/enhanced-resolve/lib/Resolver.js:238:5)
    at _fn0 (eval at create (/home/fionn/anaconda3/envs/jupyterlab-ext/share/jupyter/lab/staging/node_modules/tapable/lib/HookCodeFactory.js:32:10), <anonymous>:15:1)
    at resolver.doResolve (/home/fionn/anaconda3/envs/jupyterlab-ext/share/jupyter/lab/staging/node_modules/enhanced-resolve/lib/UnsafeCachePlugin.js:37:5)
    at hook.callAsync (/home/fionn/anaconda3/envs/jupyterlab-ext/share/jupyter/lab/staging/node_modules/enhanced-resolve/lib/Resolver.js:238:5)
    at _fn0 (eval at create (/home/fionn/anaconda3/envs/jupyterlab-ext/share/jupyter/lab/staging/node_modules/tapable/lib/HookCodeFactory.js:32:10), <anonymous>:15:1)
    at hook.callAsync (/home/fionn/anaconda3/envs/jupyterlab-ext/share/jupyter/lab/staging/node_modules/enhanced-resolve/lib/Resolver.js:238:5) resolve 'child_process' in '/home/fionn/anaconda3/envs/jupyterlab-ext/share/jupyter/lab/staging/node_modules/jupyerlab_xkdc/lib' Parsed request is a module   using description file: /home/fionn/anaconda3/envs/jupyterlab-ext/share/jupyter/lab/staging/node_modules/jupyerlab_xkdc/package.json (relative path: ./lib)
    Field 'browser' doesn't contain a valid alias configuration
    resolve as module
      /home/fionn/anaconda3/envs/jupyterlab-ext/share/jupyter/lab/staging/node_modules/jupyerlab_xkdc/lib/node_modules doesn't exist or is not a directory
      /home/fionn/anaconda3/envs/jupyterlab-ext/share/jupyter/lab/staging/node_modules/node_modules doesn't exist or is not a directory
      /home/fionn/anaconda3/envs/jupyterlab-ext/share/jupyter/lab/node_modules doesn't exist or is not a directory
      /home/fionn/anaconda3/envs/jupyterlab-ext/share/jupyter/node_modules doesn't exist or is not a directory
      /home/fionn/anaconda3/envs/jupyterlab-ext/share/node_modules doesn't exist or is not a directory
      /home/fionn/anaconda3/envs/jupyterlab-ext/node_modules doesn't exist or is not a directory
      /home/fionn/anaconda3/envs/node_modules doesn't exist or is not a directory
      /home/fionn/anaconda3/node_modules doesn't exist or is not a directory
      /home/fionn/node_modules doesn't exist or is not a directory
      /home/node_modules doesn't exist or is not a directory
      /node_modules doesn't exist or is not a directory
      looking for modules in /home/fionn/anaconda3/envs/jupyterlab-ext/share/jupyter/lab/staging/node_modules/jupyerlab_xkdc/node_modules
        using description file: /home/fionn/anaconda3/envs/jupyterlab-ext/share/jupyter/lab/staging/node_modules/jupyerlab_xkdc/package.json (relative path: ./node_modules)
          Field 'browser' doesn't contain a valid alias configuration
      looking for modules in /home/fionn/anaconda3/envs/jupyterlab-ext/share/jupyter/lab/staging/node_modules
        using description file: /home/fionn/anaconda3/envs/jupyterlab-ext/share/jupyter/lab/staging/package.json (relative path: ./node_modules)
          Field 'browser' doesn't contain a valid alias configuration
          using description file: /home/fionn/anaconda3/envs/jupyterlab-ext/share/jupyter/lab/staging/node_modules/child_process/package.json (relative path: .)
            no extension
              Field 'browser' doesn't contain a valid alias configuration
          using description file: /home/fionn/anaconda3/envs/jupyterlab-ext/share/jupyter/lab/staging/node_modules/jupyerlab_xkdc/package.json (relative path: ./node_modules/child_process)
            no extension
              Field 'browser' doesn't contain a valid alias configuration
              /home/fionn/anaconda3/envs/jupyterlab-ext/share/jupyter/lab/staging/node_modules/child_process is not a file
            .wasm
              Field 'browser' doesn't contain a valid alias configuration
              /home/fionn/anaconda3/envs/jupyterlab-ext/share/jupyter/lab/staging/node_modules/jupyerlab_xkdc/node_modules/child_process doesn't exist
            .wasm
              Field 'browser' doesn't contain a valid alias configuration
              /home/fionn/anaconda3/envs/jupyterlab-ext/share/jupyter/lab/staging/node_modules/child_process.wasm doesn't exist
            .mjs
              Field 'browser' doesn't contain a valid alias configuration
              /home/fionn/anaconda3/envs/jupyterlab-ext/share/jupyter/lab/staging/node_modules/jupyerlab_xkdc/node_modules/child_process.wasm doesn't exist
            .mjs
              Field 'browser' doesn't contain a valid alias configuration
              /home/fionn/anaconda3/envs/jupyterlab-ext/share/jupyter/lab/staging/node_modules/child_process.mjs doesn't exist
            .js
              Field 'browser' doesn't contain a valid alias configuration
              /home/fionn/anaconda3/envs/jupyterlab-ext/share/jupyter/lab/staging/node_modules/jupyerlab_xkdc/node_modules/child_process.mjs doesn't exist
            .js
              Field 'browser' doesn't contain a valid alias configuration
              /home/fionn/anaconda3/envs/jupyterlab-ext/share/jupyter/lab/staging/node_modules/child_process.js doesn't exist
            .json
              Field 'browser' doesn't contain a valid alias configuration
              /home/fionn/anaconda3/envs/jupyterlab-ext/share/jupyter/lab/staging/node_modules/jupyerlab_xkdc/node_modules/child_process.js doesn't exist
            .json
              Field 'browser' doesn't contain a valid alias configuration
              /home/fionn/anaconda3/envs/jupyterlab-ext/share/jupyter/lab/staging/node_modules/child_process.json doesn't exist
              /home/fionn/anaconda3/envs/jupyterlab-ext/share/jupyter/lab/staging/node_modules/jupyerlab_xkdc/node_modules/child_process.json doesn't exist
            as directory
              existing directory
                use ./index.js from main in package.json
                  using description file: /home/fionn/anaconda3/envs/jupyterlab-ext/share/jupyter/lab/staging/node_modules/child_process/package.json (relative path: .)
                    Field 'browser' doesn't contain a valid alias configuration
            as directory
              /home/fionn/anaconda3/envs/jupyterlab-ext/share/jupyter/lab/staging/node_modules/jupyerlab_xkdc/node_modules/child_process doesn't exist
                    using description file: /home/fionn/anaconda3/envs/jupyterlab-ext/share/jupyter/lab/staging/node_modules/child_process/package.json (relative path: ./index.js)
                      no extension
                        Field 'browser' doesn't contain a valid alias configuration
                        /home/fionn/anaconda3/envs/jupyterlab-ext/share/jupyter/lab/staging/node_modules/child_process/index.js doesn't exist
                      .wasm
                        Field 'browser' doesn't contain a valid alias configuration
                        /home/fionn/anaconda3/envs/jupyterlab-ext/share/jupyter/lab/staging/node_modules/child_process/index.js.wasm doesn't exist
                      .mjs
                        Field 'browser' doesn't contain a valid alias configuration
                        /home/fionn/anaconda3/envs/jupyterlab-ext/share/jupyter/lab/staging/node_modules/child_process/index.js.mjs doesn't exist
                      .js
                        Field 'browser' doesn't contain a valid alias configuration
                        /home/fionn/anaconda3/envs/jupyterlab-ext/share/jupyter/lab/staging/node_modules/child_process/index.js.js doesn't exist
                      .json
                        Field 'browser' doesn't contain a valid alias configuration
                        /home/fionn/anaconda3/envs/jupyterlab-ext/share/jupyter/lab/staging/node_modules/child_process/index.js.json doesn't exist
                      as directory
                        /home/fionn/anaconda3/envs/jupyterlab-ext/share/jupyter/lab/staging/node_modules/child_process/index.js doesn't exist
                using path: /home/fionn/anaconda3/envs/jupyterlab-ext/share/jupyter/lab/staging/node_modules/child_process/index
                  using description file: /home/fionn/anaconda3/envs/jupyterlab-ext/share/jupyter/lab/staging/node_modules/child_process/package.json (relative path: ./index)
                    no extension
                      Field 'browser' doesn't contain a valid alias configuration
                      /home/fionn/anaconda3/envs/jupyterlab-ext/share/jupyter/lab/staging/node_modules/child_process/index doesn't exist
                    .wasm
                      Field 'browser' doesn't contain a valid alias configuration
                      /home/fionn/anaconda3/envs/jupyterlab-ext/share/jupyter/lab/staging/node_modules/child_process/index.wasm doesn't exist
                    .mjs
                      Field 'browser' doesn't contain a valid alias configuration
                      /home/fionn/anaconda3/envs/jupyterlab-ext/share/jupyter/lab/staging/node_modules/child_process/index.mjs doesn't exist
                    .js
                      Field 'browser' doesn't contain a valid alias configuration
                      /home/fionn/anaconda3/envs/jupyterlab-ext/share/jupyter/lab/staging/node_modules/child_process/index.js doesn't exist
                    .json
                      Field 'browser' doesn't contain a valid alias configuration
                      /home/fionn/anaconda3/envs/jupyterlab-ext/share/jupyter/lab/staging/node_modules/child_process/index.json doesn't exist error Command failed with exit code 1.

    I've googled around but still have no idea what to do to resolve this issue.

    Any pointers or info at all would be greatly appreciated.

    My packages.json file.

    {
  "name": "jupyerlab_xkdc",
  "version": "0.1.0",
  "description": "Short description",
  "keywords": [
    "jupyter",
    "jupyterlab",
    "jupyterlab-extension"
  ],
  "homepage": "https://github.com/my_name/myextension",
  "bugs": {
    "url": "https://github.com/my_name/myextension/issues"
  },
  "license": "BSD-3-Clause",
  "author": "Fionn McKnight",
  "files": [
    "lib/**/*.{d.ts,eot,gif,html,jpg,js,js.map,json,png,svg,woff2,ttf}",
    "style/**/*.{css,eot,gif,html,jpg,json,png,svg,woff2,ttf}"
  ],
  "main": "lib/index.js",
  "types": "lib/index.d.ts",
  "repository": {
    "type": "git",
    "url": "https://github.com/my_name/myextension.git"
  },
  "scripts": {
    "build": "tsc",
    "clean": "rimraf lib",
    "prepare": "npm run clean && npm run build",
    "watch": "tsc -w"
  },
  "dependencies": {
    "@jupyterlab/application": "^0.19.1",
    "@jupyterlab/apputils": "^0.19.1",
    "@phosphor/coreutils": "^1.3.0",
    "@phosphor/messaging": "^1.2.2",
    "@phosphor/widgets": "^1.6.0",
    "@types/jquery": "^3.3.29",
    "@types/node": "^10.12.19",
    "child_process": "^1.0.2",
    "npm": "^6.7.0"
  },
  "devDependencies": {
    "@types/node": "^10.12.19",
    "rimraf": "^2.6.1",
    "typescript": "~3.1.1"
  },
  "jupyterlab": {
    "extension": true
  }
}

Recents

Why Is PNG file with Drop Shadow in Flutter Web App Grainy?
How to troubleshoot crashes detected by Google Play Store for Flutter app
Cupertino DateTime picker interfering with scroll behaviour
Why does awk -F work for most letters, but not for the letter "t"?
Flutter change focus color and icon color but not works
How to print and connect to printer using flutter desktop via usb?
Critical issues have been reported with the following SDK versions: com.google.android.gms:play-services-safetynet:17.0.0
Flutter Dart - get localized country name from country code
navigatorState is null when using pushNamed Navigation onGenerateRoutes of GetMaterialPage
Android Sdk manager not found- Flutter doctor error
Flutter Laravel Push Notification without using any third party like(firebase,onesignal..etc)
How to change the color of ElevatedButton when entering text in TextField

Related

Configure local typescript compiler inside package.json
`Cannot find module` from a new owned TypeScript module
Npm run serve Error
You seem to not be depending on "@angular/core". Typescript
how to use @types/node in node application
How include node_modules in output directory with TypeScript
npm build gives "Ineffective mark-compacts near heap limit Allocation failed"
Cannot find module 'ngx-bootstrap'
How to compile typescript using npm command?
Writing npm modules in TypeScript