Developer OneNote

Solving the Angular Update Error: Conflicting peer dependency

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If you’re struggling to update your Angular version and encounter the following error when executing the command ‘npm install’:

npm ERR! While resolving: angular-test-app@0.0.0
npm ERR! Found: @angular-devkit/build-angular@16.2.11
npm ERR! node_modules/@angular-devkit/build-angular
npm ERR!   dev @angular-devkit/build-angular@"^17.2.0" from the root project
npm ERR!
npm ERR! Could not resolve dependency:
npm ERR! dev @angular-devkit/build-angular@"^17.2.0" from the root project
npm ERR!
npm ERR! Conflicting peer dependency: @angular/compiler-cli@17.2.1
npm ERR! node_modules/@angular/compiler-cli
npm ERR!   peer @angular/compiler-cli@"^17.0.0" from @angular-devkit/build-angular@17.2.0
npm ERR!   node_modules/@angular-devkit/build-angular
npm ERR!     dev @angular-devkit/build-angular@"^17.2.0" from the root project
npm ERR!
npm ERR! Fix the upstream dependency conflict, or retry
npm ERR! this command with --force or --legacy-peer-deps
npm ERR! to accept an incorrect (and potentially broken) dependency resolution.

Here’s a potential solution:

Delete the ‘node_modules’ folder and the ‘package-lock.json’ file, then reinstall npm. This could resolve your issue.

To do this, execute the following commands:

  1. Delete ‘node_modules’
  2. Delete ‘package-lock.json’
  3. Run ‘npm install’

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