Home/ Questions/Simple solutions for the: ''You seem to not be depending on "@angular/core" and/or "rxjs". This is an error'' error.
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Maxine Martin
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Asked: 2022-05-18T18:20:09+00:00 In:

Simple solutions for the: ”You seem to not be depending on “@angular/core” and/or “rxjs”. This is an error” error.

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I get the “you seem to not be depending on “@angular/core” and/or “rxjs”. This is an error” error as the title says. How can I fix it so the error goes away? Here is my detail:

ng build --environment=prod --aot=false --output-path="..." --base-href="..."
npm install @angular/core
ng serve
"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"

When I operated it, I received the error text:

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

I appreciate any help from you.

npm
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2 Answers

  1. Best Answer
    Expert

    The cause:

    After examining your problem carefully, I find out that the dependencies which you install in your project do not rely on “@angular/core” and/or “rxjs”. Therefore, you have got this error.

    Solution:

    To solve this error, first you have to use app:

    You need to set up all dependencies by running npm install inside of this project folder. Then you have to check whether you have used the most recent CLI version or not (you can refer the way to upgrade guide below). Finally, to use the app, let’s launch ng serve (try npm start if ng serve doesn’t work).

    How can we upgrade the CLI?

    It’s very simple. You only need to use “sudo” on Linux or Mac and run the following command:

    sudo npm uninstall -g angular-cli @angular/cli

npm cache clean --force

sudo npm install -g @angular/cli

    In the case, it does not work, you have to exclude package-lock.json file and node_modules folder from the directory of your project:

    npm install

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

npm link
    • 1

  2. If you are unsure if the below solution will work for your problem, please give it a shot.

    The same problem occurred to me when I was executing below command. 

    D:\My_Project>ng serve

    The rest of the steps worked for me. 

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

    Please let me know if this does not work. I will reproduce the error and give you a solution as soon as possible.

    • 9

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