commit-and-tag-version/lib/run-exec.js

replacement for `npm version` with automatic CHANGELOG generation

const { promisify } = require('util');
const printError = require('./print-error');

const exec = promisify(require('child_process').exec);

module.exports = async function (args, cmd) {
  if (args.dryRun) return;
  try {
    const { stderr, stdout } = await exec(cmd);
    // If exec returns content in stderr, but no error, print it as a warning
    if (stderr) printError(args, stderr, { level: 'warn', color: 'yellow' });
    return stdout;
  } catch (error) {
    // If exec returns an error, print it and exit with return code 1
    printError(args, error.stderr || error.message);
    throw error;
  }
};