@plone/create-volto-app/lib/utils/get-install-cmd.js

Create Volto App

'use strict';

const execa = require('execa');

let cmd;

module.exports = function getInstallCmd() {
  if (cmd) {
    return cmd;
  }

  try {
    execa.sync('yarnpkg', '--version');
    cmd = 'yarn';
  } catch (e) {
    cmd = 'npm';
  }

  return cmd;
};