Angular build version

SemVer.

Add 'node' to 'tsconfig.app.json':

{
  "compilerOptions": {
    "types": ["node"]
  }
}

Add 'appVersion' to 'src/environments/environment.prod.ts':

export const environment = {
  production: true,
  appVersion: require('../../package.json').version
};

Add 'appVersion' to 'src/environments/environment.ts':

export const environment = {
  production: false,
  appVersion: require('../../package.json').version + '--dev'
};

Add 'appVersion' attribute for the main 'AppComponent':

import { Component, HostBinding } from '@angular/core';
import { environment } from 'src/environments/environment';

@Component({
  ...
})
export class AppComponent {
  @HostBinding('attr.app-version') appVersionAttr = environment.appVersion;
}

CLI commands to bump up the version via npm:

npm version patch
npm version minor
npm version major