Error: Cannot find module 'webpack/lib/ParserHelpers'

[GChuf]

🐞 Bug report

Command (mark with an x)

• new
• build
• serve
• test
• e2e
• generate
• add
• update
• lint
• xi18n
• run
• config
• help
• version
• doc

Is this a regression?

I haven't tested it

Description

When running ng serve or ng build with [email protected] , I get:
Error: Cannot find module 'webpack/lib/ParserHelpers'.

🔬 Minimal Reproduction

npm i [email protected] --save-dev
ng build

🔥 Exception or Error

[error] Error: Cannot find module 'webpack/lib/ParserHelpers'
Require stack:
- C:\Work\Angular\ipro-alis-ng10 working version\node_modules\worker-plugin\dist\worker-plugin.js
- C:\Work\Angular\ipro-alis-ng10 working version\node_modules\@angular-devkit\build-angular\src\angular-cli-files\models\webpack-configs\worker.js
- C:\Work\Angular\ipro-alis-ng10 working version\node_modules\@angular-devkit\build-angular\src\angular-cli-files\models\webpack-configs\index.js
- C:\Work\Angular\ipro-alis-ng10 working version\node_modules\@angular-devkit\build-angular\src\browser\index.js
- C:\Work\Angular\ipro-alis-ng10 working version\node_modules\@angular-devkit\architect\node\node-modules-architect-host.js
- C:\Work\Angular\ipro-alis-ng10 working version\node_modules\@angular-devkit\architect\node\index.js
- C:\Work\Angular\ipro-alis-ng10 working version\node_modules\@angular\cli\models\architect-command.js
- C:\Work\Angular\ipro-alis-ng10 working version\node_modules\@angular\cli\commands\build-impl.js
- C:\Work\Angular\ipro-alis-ng10 working version\node_modules\@angular-devkit\schematics\tools\export-ref.js
- C:\Work\Angular\ipro-alis-ng10 working version\node_modules\@angular-devkit\schematics\tools\index.js
- C:\Work\Angular\ipro-alis-ng10 working version\node_modules\@angular\cli\utilities\json-schema.js
- C:\Work\Angular\ipro-alis-ng10 working version\node_modules\@angular\cli\models\command-runner.js
- C:\Work\Angular\ipro-alis-ng10 working version\node_modules\@angular\cli\lib\cli\index.js
- C:\Users\M0119905\AppData\Roaming\npm\node_modules\@angular\cli\lib\init.js
- C:\Users\M0119905\AppData\Roaming\npm\node_modules\@angular\cli\bin\ng
    at Function.Module._resolveFilename (internal/modules/cjs/loader.js:966:15)
    at Function.Module._load (internal/modules/cjs/loader.js:842:27)
    at Module.require (internal/modules/cjs/loader.js:1026:19)
    at require (internal/modules/cjs/helpers.js:72:18)
    at Object. (C:\Work\Angular\ipro-alis-ng10 working version\node_modules\worker-plugin\dist\worker-plugin.js:5:37)
    at Module._compile (internal/modules/cjs/loader.js:1138:30)
    at Object.Module._extensions..js (internal/modules/cjs/loader.js:1158:10)
    at Module.load (internal/modules/cjs/loader.js:986:32)
    at Function.Module._load (internal/modules/cjs/loader.js:879:14)
    at Module.require (internal/modules/cjs/loader.js:1026:19)
    at require (internal/modules/cjs/helpers.js:72:18)
    at Object. (C:\Work\Angular\ipro-alis-ng10 working version\node_modules\@angular-devkit\build-angular\src\angular-cli-files\models\webpack-configs\worker.js:13:22)
    at Module._compile (internal/modules/cjs/loader.js:1138:30)
    at Object.Module._extensions..js (internal/modules/cjs/loader.js:1158:10)
    at Module.load (internal/modules/cjs/loader.js:986:32)
    at Function.Module._load (internal/modules/cjs/loader.js:879:14)

🌍 Your Environment

Angular CLI: 10.0.6
Node: 12.18.2
OS: win32 x64


Angular: 10.0.9
... common, compiler, compiler-cli, core, forms
... language-service, localize, platform-browser
... platform-browser-dynamic, router
Ivy Workspace: Yes

Package                           Version
-----------------------------------------------------------
@angular-devkit/architect         0.1000.6
@angular-devkit/build-angular     0.1000.6
@angular-devkit/build-optimizer   0.1000.6
@angular-devkit/build-webpack     0.1000.6
@angular-devkit/core              10.0.6
@angular-devkit/schematics        10.0.6
@angular/cli                      10.0.6
@ngtools/webpack                  10.0.6
@schematics/angular               10.0.6
@schematics/update                0.1000.6
rxjs                              6.6.2
typescript                        3.9.7
webpack                           5.0.0-beta.26

Anything else relevant?

This does not happen with webpack@4.
I've reported the issue on webpack github page, they've asked me to report it here.

[alan-agius4]

Hi @GChuf,

Webpack 5 is not yet supported. Kindly subscribe to #17555.

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