Function prepareFolder

packages/cli/src/commands/init/init.ts:180–209

* Check & prepare destination folder for extracting.

(cwd: string, folder: string, force?: boolean)

 * Check & prepare destination folder for extracting.
 */
function prepareFolder(cwd: string, folder: string, force?: boolean) {
  const dest = path.join(cwd, folder);

  if (fs.existsSync(dest)) {
    if (!fs.lstatSync(dest).isDirectory()) {
      throw new Error(
        `Destination path "${chalk.bold(
          folder
        )}" already exists and is not a directory.`
      );
    }
    if (!force && fs.readdirSync(dest).length !== 0) {
      throw new Error(
        `Destination path "${chalk.bold(
          folder
        )}" already exists and is not an empty directory. You may use ${cmd(
          '--force'
        )} or ${cmd('-f')} to override it.`
      );
    }
  } else if (dest !== cwd) {
    try {
      fs.mkdirSync(dest);
    } catch (_e) {
      throw new Error(`Could not create directory "${chalk.bold(folder)}".`);
    }
  }

  return dest;
}

/**
 * Guess which example user try to init