create-web3/helpers/should-use-yarn.js

A boilerplate for creating a web3 projects

const { execSync } = require('child_process');

const shouldUseYarn = () => {
  try {
    const userAgent = process.env.npm_config_user_agent;
    if (userAgent) {
      return Boolean(userAgent && userAgent.startsWith('yarn'));
    }
    execSync('yarnpkg --version', { stdio: 'ignore' });
    return true;
  } catch (e) {
    return false;
  }
};

exports.shouldUseYarn = shouldUseYarn;