To install Angular on your local system, you need Nodejs & npm
Then, install the Angular CLI
$ npm install -g @angular/cli
Inside the app-planes folder
$ npm i @angular-devkit/build-angular
$ ng update @angular/cli @angular/core
Install dependencies needed
$ npm install
Inside the api-planes folder
$ npm install
Export api_planes.sql database
app-planes folder
ng serve
api-planes folder
npm run develop