install angular devkit code example
Example 1: install @angular-devkit/build-angular
npm install --save-dev @angular-devkit/build-angular
Example 2: npm install angular do not install devkit
npm i --save-dev @angular-devkit/build-angular@latest
npm install --save-dev @angular-devkit/build-angular
npm i --save-dev @angular-devkit/build-angular@latest