Git pre-push branch name validator

branch-name-validator.js

/**
 * Validate a branch name through the pre-push hook using husky and
 * prevent incorrectly formatted branch names from reaching the server.
 */
const fs = require('fs');
const path = require('path');

const SUCCESS_CODE = 0;
const FAILED_CODE = 1;

function getCurrentBranchName(p = process.cwd()) {
  const gitHeadPath = `${p}/.git/HEAD`;

  return fs.existsSync(p)
    ? fs.existsSync(gitHeadPath)
      ? fs
          .readFileSync(gitHeadPath, 'utf-8')
          .trim()
          .split('/')
          .slice(2)
          .join('/')
      : getCurrentBranchName(path.resolve(p, '..'))
    : false;
}

const branchNameRegex =
  '^((feature|bugfix|hotfix|framework|chore|poc)/(SQ0|SQ1|SQ2)/|release/).+$';

function validateBranchName(branchName) {
  return new RegExp(branchNameRegex).test(branchName);
}

const branchToValidate = getCurrentBranchName();

getCurrentBranchName();

if (validateBranchName(branchToValidate)) {
  console.info(
    '\x1b[32m%s\x1b[0m',
    `Success\n` + `Branch name: ${branchToValidate}\n` + `Branch name is valid!`
  );
  process.exitCode = SUCCESS_CODE;
} else {
  console.error(
    '\x1b[31m%s\x1b[0m',
    `Error\n` +
      `Branch name: ${branchToValidate}\n\n` +
      `Your branch name is invalid, please use the appropriate branch name format.\n` +
      `Acceptable branch name formats are:\n\n` +
      `- bugfix/SQ1/name-of-issue\n` +
      `- chore/SQ0/name-of-task\n` +
      `- feature/SQ1/name-of-feature\n` +
      `- hotfix/SQ1/name-of-issue\n` +
      `- poc/SQ1/name-of-task\n` +
      ``
  );
  process.exitCode = FAILED_CODE;
}