@w11k/git-info

This schematic fro the angular-cli let's you easily setup a workflow that allows you to access the git-information in your Angular App. Read our detailed blog post about the topic.

Installation

Add this schematic to your project using the ng add command

ng add @w11k/git-info

This will setup everything you need. We will automatically

• add required devDependencies to your package.json
• add a script git-version.js in the same folder where your package.json ist
• add a npm postinstall-hook to the scipts section of your package.json
• add the automatically generated file to the .gitignore

Customization

By default the schematic hooks into the postinstall-hook that is triggered after npm install has finished. Typically you would execute a fresh npm install on your build server whenever you deploy a new version of your app. If you however don't do a fresh install every time due to caching for example you can call the postinstall hook manually via

npm run postinstall

or use another hook like prebuild or no hook at all, but just a regular script in the scripts section of the package.json

Usage

After each npm install we trigger the npm-hook to update the automatically generated file environments/version.ts This is a normal Typescript file that simply exports a constant. It is very important that this file in not committed to the git-repo. The file looks similar to this:

// IMPORTANT: THIS FILE IS AUTO GENERATED! DO NOT MANUALLY EDIT OR CHECKIN!
/* tslint:disable */
export const VERSION = {
    "dirty": true,
    "raw": "34a0f1d-dirty",
    "hash": "34a0f1d",
    "distance": null,
    "tag": null,
    "semver": null,
    "suffix": "34a0f1d-dirty",
    "semverString": null,
    "version": "0.0.0"
};
/* tslint:enable */

To use the generated VERSION you can simply import it in your Angular Components/Services like so

import { Component } from '@angular/core';
import { VERSION } from '../environments/version';  

@Component({
  selector: 'app-root',
  templateUrl: './app.component.html',
  styleUrls: ['./app.component.css']
})
export class AppComponent {
  title = 'app';
  
  constructor() {
    console.log(`Application version is: version (from package.json)=${VERSION.version}, git-tag=${VERSION.tag}, git-hash=${VERSION.hash}`);
  }
}

Automatically bump the version number

To update the version number every time your CI/CD publishes an update to production use

npm version patch

Acknowledgement

• Idea and Code heavily inspired by this blog post
• Angular schematic implementation heavily inspired by jest-schematic