Function extractExample

packages/cli/src/commands/init/init.ts:126–175

* Extract example to directory

(
  client: Client,
  name: string,
  dir: string,
  force?: boolean,
  ver = 'v2'
)

 * Extract example to directory
 */
async function extractExample(
  client: Client,
  name: string,
  dir: string,
  force?: boolean,
  ver = 'v2'
) {
  const folder = prepareFolder(client.cwd, dir || name, force);
  output.spinner(`Fetching ${name}`);

  const url = `${EXAMPLE_API}/${ver}/download/${name}.tar.gz`;

  return client
    .fetch(url, { json: false })
    .then(async res => {
      output.stopSpinner();

      if (res.status !== 200) {
        throw new Error(`Could not get ${name}.tar.gz`);
      }

      await new Promise((resolve, reject) => {
        const extractor = tar.extract(folder);
        const body = toNodeReadable(res.body);
        body.on('error', reject);
        extractor.on('error', reject);
        extractor.on('finish', resolve);
        body.pipe(extractor);
      });

      const successLog = `Initialized "${chalk.bold(
        name
      )}" example in ${chalk.bold(toHumanPath(folder))}.`;
      const folderRel = path.relative(client.cwd, folder);
      const deployHint =
        folderRel === ''
          ? listItem(`To deploy, run ${getCommandName()}.`)
          : listItem(
              `To deploy, ${cmd(
                `cd ${folderRel}`
              )} and run ${getCommandName()}.`
            );
      output.success(`${successLog}\n${deployHint}`);
      return 0;
    })
    .catch(e => {
      output.stopSpinner();
      throw e;
    });
}

/**
 * Check & prepare destination folder for extracting.