verify_commit_msg.js

const chalk = require('chalk');
const msgPath = process.env.GIT_PARAMS;
const msg = require('fs').readFileSync(msgPath, 'utf-8').trim();

const commitRE = /^(revert: )?(feat|fix|docs|style|refactor|perf|test|workflow|ci|chore|types)(\(.+\))?: .{1,50}/;

if (!commitRE.test(msg)) {
  console.log();
  console.error(
    `  ${chalk.bgRed.white(' ERROR ')} ${chalk.red('invalid commit message format.')}\n\n` +
    chalk.red('  Proper commit message format is required for automated changelog generation. Examples:\n\n') +
    `    ${chalk.green('feat(compiler): add \'comments\' option')}\n` +
    `    ${chalk.green('fix(v-model): handle events on blur (close #28)')}\n\n` +
    chalk.red('  See .README.md for more details.\n') +
    chalk.red(`  You can also use ${chalk.cyan('npm run commit')} to interactively generate a commit message.\n`)
  );
  process.exit(1);
}