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I get this error:Cannot find module '@angular-devkit/build-angular/package.json when I try run my app with ng serve from Linux

hello guys I have this next error when I try run my App from the terminal(linux), when I run this command:

ng serve

and I get this error in my terminal:

AppBlog/blog# ng serve
An unhandled exception occurred: Cannot find module '@angular-devkit/build-angular/package.json'
Require stack:
- /usr/local/lib/node_modules/@angular/cli/node_modules/@angular-devkit/architect/node/node-modules-architect-host.js
- /usr/local/lib/node_modules/@angular/cli/node_modules/@angular-devkit/architect/node/index.js
- /usr/local/lib/node_modules/@angular/cli/models/architect-command.js
- /usr/local/lib/node_modules/@angular/cli/commands/serve-impl.js
- /usr/local/lib/node_modules/@angular/cli/node_modules/@angular-devkit/schematics/tools/export-ref.js
- /usr/local/lib/node_modules/@angular/cli/node_modules/@angular-devkit/schematics/tools/index.js
- /usr/local/lib/node_modules/@angular/cli/utilities/json-schema.js
- /usr/local/lib/node_modules/@angular/cli/models/command-runner.js
- /usr/local/lib/node_modules/@angular/cli/lib/cli/index.js
- /usr/local/lib/node_modules/@angular/cli/lib/init.js
- /usr/local/lib/node_modules/@angular/cli/bin/ng
See "/tmp/ng-ev5aDi/angular-errors.log" for further details.

then i checked out this part :

An unhandled exception occurred: Cannot find module '@angular-devkit/build-angular/package.json'

this part say that cannot find moduled called: "'@angular-devkit/build-angular/package.json'"

then I cheked out this file in my project but I have this, look:

  "devDependencies": {
    "@angular-devkit/build-angular": "~0.900.3",
    "@angular/cli": "~9.0.3",
    "@angular/compiler-cli": "~9.0.2",
    "@angular/language-service": "~9.0.2",
    "@types/node": "^12.11.1",
    "@types/jasmine": "~3.5.0",
    "@types/jasminewd2": "~2.0.3",
    "codelyzer": "^5.1.2",
    "jasmine-core": "~3.5.0",
    "jasmine-spec-reporter": "~4.2.1",
    "karma": "~4.3.0",
    "karma-chrome-launcher": "~3.1.0",
    "karma-coverage-istanbul-reporter": "~2.1.0",
    "karma-jasmine": "~2.0.1",
    "karma-jasmine-html-reporter": "^1.4.2",
    "protractor": "~5.4.3",
    "ts-node": "~8.3.0",
    "tslint": "~5.18.0",
    "typescript": "~3.7.5"
  }

then i went to google and search and I found this like from stackoverflow and I tried their solution but it does not work and I run the command ng serve again.

what I did wrong?

before nothing , before I added 3 components: login,register and home in my folder : src/app with this command : ng generate component login and I import my component in my file : app.component.ts this way:

/* THIS IS JUST A EXAMPLE VERY SIMILAR TO MY CODE REAL,  I just import one component*/

import { Component } from '@angular/core';
import { loginComponent } from './login.component';
@Component({
  selector: 'app-root',
  templateUrl: './app.component.html',
  styleUrls: ['./app.component.css'],
  declarations: [loginComponent], //import my login
})
export class AppComponent {
  title = 'blog';
}

maybe is this part but I dont find a solution, any expert in angular could tell me what I did wrong?

UPDATE

I am continue searching in google and I found this: github/Angular they are saying that I would install npm/angular-cli/node again and I run this command for update my angular cli:

uninstalled ang-cli

npm uninstall @angular/cli

installed the latest

npm install -g @angular/cli@latest

but first I update my npm with this command:

installed the latest npm

npm install -g npm@latest

but it still does not work.

over 4 years ago · Santiago Trujillo

16 Respuestas

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Answer 1 · 2022-03-08T18:52:56.233Z

In my case these 2 commands helped:

npm install -g npm@latest
npm install -g @angular/cli

Answer 2 · 2022-03-08T18:52:56.465Z

I have faced this issue when i recently upgraded the Angular CLI to Angular 9. the following commands fixed the issue.

npm install --save-dev @angular-devkit/build-angular
npm install
ng serve -o

Answer 3 · 2022-03-08T18:52:56.716Z

Please try installing the npm on a project folder. I had installed npm globally but installing the npm once again on a solution folder fixed my issue.

npm install in the project folder will do the trick. Then do ng serve -o

Answer 4 · 2022-03-08T18:52:57.003Z

In my case 2 commands helped:

npm install --save-dev @angular-devkit/build-angular

npm install --save-dev @angular-devkit/core

Answer 5 · 2022-03-08T18:52:57.254Z

npm install run this in your terminal and done.

over 4 years ago · Santiago Trujillo Denunciar

Answer 6 · 2022-03-08T18:52:57.491Z

I finally found something working for me.

Add --force at the end of your npm command.

Like npm install --save-dev @angular-devkit/build-angular --force

Then ng serve

Answer 7 · 2022-03-08T18:52:57.879Z

I am Working Angular Project When I update Angular Cli and then I get this error An unhandled exception occurred: Cannot find module '@angular-devkit/build-angular/src/angular-cli-files/models/webpack-configs/utils' Require stack:

C:\codeFlies Development\how_marketsapp\node_modules@ionic\angular-toolkit\builders\utils\index.js
C:\codeFlies Development\how_marketsapp\node_modules@ionic\angular-toolkit\builders\cordova-build\index.js
C:\codeFlies Development\how_marketsapp\node_modules@angular-devkit\architect\node\node-modules-architect-host.js
C:\codeFlies Development\how_marketsapp\node_modules@angular-devkit\architect\node\index.js
C:\codeFlies Development\how_marketsapp\node_modules@angular\cli\models\architect-command.js
C:\codeFlies Development\how_marketsapp\node_modules@angular\cli\commands\run-impl.js
C:\codeFlies Development\how_marketsapp\node_modules@angular\cli\node_modules@angular-devkit\schematics\tools\export-ref.js
C:\codeFlies Development\how_marketsapp\node_modules@angular\cli\node_modules@angular-devkit\schematics\tools\index.js
C:\codeFlies Development\how_marketsapp\node_modules@angular\cli\utilities\json-schema.js
C:\codeFlies Development\how_marketsapp\node_modules@angular\cli\lib\cli\index.js
C:\codeFlies Development\how_marketsapp\node_modules@angular\cli\lib\init.js
C:\codeFlies Development\how_marketsapp\node_modules@angular\cli\bin\ng See "C:\Users\hp\AppData\Local\Temp\ng-UQJuET\angular-errors.log" for further details.

I have resolve this error by using this command

npm i @ionic/angular-toolkit@latest

Answer 8 · 2022-03-08T18:52:58.238Z

In my case running npm install in project folder solved the problem.

Answer 9 · 2022-03-08T18:52:58.461Z

Had this exact issue on an existing Angular 10 project. The following steps resolved the issue for me:

Delete the package-lock.json file.
Delete the node_modules folder and all of its contents.
Run npm install. Note that in my case I had to add the --force flag. YMMV

At this point, ng build --prod completed successfully for me.

Answer 10 · 2022-03-08T18:52:58.673Z

Under the project directory run the following command

npm install --save-dev @angular-devkit/build-angular

Answer 11 · 2022-03-08T18:52:58.886Z

The error states that "Cannot find module '@angular-devkit/build-angular/package.json'" which means you have to have that package added.

install the latest npm

npm install -g npm@latest
add the missing

npm install --save-dev @angular-devkit/build-angular

Answer 12 · 2022-03-08T18:52:59.137Z

In my case I was getting a similar but different error.

Cannot find module '@nguniversal/builders/package.json'

To fix it I had to run

npm install --save-dev @nguniversal/builders

Answer 13 · 2022-03-08T18:52:59.378Z

I fixed it using:

npm i --save-dev @angular-devkit/build-angular --force
npm i @angular/compiler-cli --save-dev

Answer 14 · 2022-03-08T18:52:59.881Z

Earlier following were errors:-

ng serve

Following worked for me: -

npm install npm@latest reinstall without -g

Packages installed successfully

Answer 15 · 2022-03-08T18:53:00.184Z

It also happened to me, when I ng serve on the cloned code on the company. This happens because there's an error with node modules installation so we need to install it again, build it, and serve it.

npm install --save-dev @angular-devkit/build-angular
ng build
ng serve

If the first step above, didn't work because it didn't work to me and receives another error which is: "npm ERR! cb() never called!" I solve this using this command: npm cache clean --force and once this worked, continue to steps 2-3. It worked.

P.S Kindly give me an upvote if this works, My account is new in stackoverlfow hehez.

Answer 16 · 2022-03-08T18:53:00.447Z

If you are on Angular 11 and facing this issue then please do the following:

Remove "@angular-devkit/build-ng-packagr:build" dependency from devDependencies
Update angular.json->projects->your-library-name -> architect -> build ->

Old:"builder": "@angular-devkit/build-ng-packagr:build",

New:"builder": "@angular-devkit/build-angular:ng-packagr",

0

658

I get this error:Cannot find module '@angular-devkit/build-angular/package.json when I try run my app with ng serve from Linux

uninstalled ang-cli

installed the latest

installed the latest npm

16 Respuestas

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