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

Example 1: An unhandled exception occurred: Cannot find module '@angular-devkit/build-angular/package.json' Require stack:

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

Example 2: An unhandled exception occurred: Cannot find module '@angular-devkit/build-angular/package.json'

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