version.js

const { gitDescribeSync } = require('git-describe');
const { version, dependencies, name, repository } = require('./package.json');
const { resolve, relative } = require('path');
const { writeFileSync } = require('fs-extra');

const gitInfo = gitDescribeSync({
  dirtyMark: false,
  dirtySemver: false
});

gitInfo.version = version;
gitInfo.name = name;
gitInfo.repository = repository;
gitInfo.dependencies = dependencies;

const file = resolve(__dirname, 'src', 'environments', 'version.ts');
writeFileSync(file,
  `// IMPORTANT: THIS FILE IS AUTO GENERATED! DO NOT MANUALLY EDIT OR CHECKIN!
/* tslint:disable */
export const VERSION = ${JSON.stringify(gitInfo, null, 4)};
/* tslint:enable */
`, { encoding: 'utf-8' });

console.log(`Wrote version info ${gitInfo.raw} to ${relative(__dirname, file)}`);