"You seem to not be depending on "@angular/core"."

Question

When I try to build my project running the following command:

ng build --environment=prod --aot=false  --output-path="..." --base-href="..." 

You seem to not be depending on @angular/core.

This is an error, however, I don't understand why because before it worked well.

I tried to do this:

npm install @angular/core  

But I get this error :

error at Error (native) error { Error: EACCES: permission denied, chown '' error at Error (native) error errno: -13, error code: 'EACCES', error syscall: 'chown', error Please try running this command again as root/Administrator. verbose exit [ -13, true ]

I also tried to get rid of node_modules, then make an install npm: but I get the same error.

And when I run the following command:

ng serve 

I have another error:

The "@angular/compiler-cli" package was not properly installed. Error: Error: Cannot find module '@angular/compiler-cli'

This is my package.json :

"ng": "ng", "start": "ng serve", "build": "ng build", "test": "ng test", "lint": "ng lint", "e2e": "ng e2e"  "@angular/animations": "^4.0.0", "@angular/common": "^4.0.0", "@angular/compiler": "^4.0.0", "@angular/core": "^4.0.0", "@angular/forms": "^4.0.0", "@angular/http": "^4.0.0", "@angular/platform-browser": "^4.0.0", "@angular/platform-browser-dynamic": "^4.0.0", "@angular/router": "^4.0.0", "@types/jquery": "^3.2.17", "cli-color": "^1.2.0", "core-js": "^2.4.1", "font-awesome": "^4.7.0", "jquery": "^3.2.1", "matrix-js-sdk": "^0.8.5", "moment": "^2.18.1", "olm": "https://matrix.org/packages/npm/olm/olm-2.2.2.tgz", "readline": "^1.3.0", "rxjs": "^5.4.1", "socket.io-client": "^2.0.3", "zone.js": "^0.8.14"  "@angular/cli": "1.2.6", "@angular/compiler-cli": "^4.0.0", "@angular/language-service": "^4.0.0", "@types/jasmine": "~2.5.53", "@types/jasminewd2": "~2.0.2", "@types/jquery": "^3.2.17", "@types/node": "~6.0.60", "codelyzer": "~3.0.1", "jasmine-core": "~2.6.2", "jasmine-spec-reporter": "~4.1.0", "karma": "~1.7.0", "karma-chrome-launcher": "~2.1.1", "karma-cli": "~1.0.1", "karma-coverage-istanbul-reporter": "^1.2.1", "karma-jasmine": "~1.1.0", "karma-jasmine-html-reporter": "^0.2.2", "protractor": "~5.1.2", "ts-node": "~3.0.4", "tslint": "~5.3.2", "typescript": "~2.3.3" 

Answer 1

Not sure whether below approach will solve your problem or not, please try once.

I have also faced the same issue while executing below command.

D:\My_Project>ng serve 

Then I have followed below steps and it worked for me.

D:\My_Project>npm link D:\My_Project>ng serve 

If this is not working kindly let me know I will try to reproduce the error which you are getting and try to give you solution as soon as possible.

Answer 2

How to use

Run npm install inside this project folder to install all dependencies.

Make sure you use the latest version of the CLI (upgrade guide below)

Run ng serve to see the app in action (try npm start in case ng serve fails).

How to upgrade the CLI

Run the below commands - only use "sudo" on Mac/ Linux.

sudo npm uninstall -g angular-cli @angular/cli  npm cache clean --force  sudo npm install -g @angular/cli 

In case it fails

Delete node_modules folder and package-lock.json file from your project directory Run the below commands in the given order-

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