How to configure Angular 'ng serve' API proxy

In order to proxy /api to http://localhost:62232 for example, first create proxy.conf.json in the same directory where package.json is located:

{
    "/api":
    {
        "target": "http://localhost:62232",
        "secure": false
    }
}

Now we need to modify package.json. Locate the line where ng serve is called, such as:

"start": "ng serve",

and add --proxy-config proxy.conf.json to the arguments of ng serve:

"start": "ng serve --proxy-config proxy.conf.json",

Full example for the scripts section of package.json:

"scripts": {
  "ng": "ng",
  "start": "ng serve --proxy-config proxy.conf.json",
  "build": "ng build --configuration=production",
  "watch": "ng build --watch --configuration development",
  "test": "ng test"
},