How to use

mapFunc

function

in

lodash

async function scrape() {
  debug('scrape');
  const {tasks, options, mapFunc} = parser.parseArgs(arguments);

  webdriver.load(options.nightmareOptions);
  const results = await Promise.mapSeries(tasks, async (task) => {
    task = parser.parseOptions(task);
    const opt = _.assign({}, task, options);
    await webdriver.setUserAgent(opt.useragent);
    await webdriver.goto(opt.url, opt.waitMs);
    await webdriver.waitForElement(opt.selector);
    const html = await scrapeOnce(opt);
    return mapFunc(html);
  });

  await end();
  return results.length > 1 ? results : results[0];
}

async function ss() {
  debug('ss');
  const {tasks, options, mapFunc} = parser.parseArgs(arguments);

  webdriver.load(options.nightmareOptions);
  const results = await Promise.mapSeries(tasks, async (task) => {
    task = parser.parseOptions(task);
    const opt = _.assign({}, task, options);
    await webdriver.goto(task.url, opt.waitMs);
    await webdriver.waitForElement(opt.selector);
    const html = await scrapeOnce(opt);
    const buffers = await screenshotOnce(opt);

    return {
      html: mapFunc(html),
      buffers: mapFunc(buffers)
    };
  });

  await end();
  return results.length > 1 ? results : results[0];
}

async function screenshot() {
  debug('screenshot');
  const {tasks, options, mapFunc} = parser.parseArgs(arguments);

  webdriver.load(options.nightmareOptions);
  const results = await Promise.mapSeries(tasks, async (task) => {
    task = parser.parseOptions(task);
    const opt = _.assign({}, task, options);
    await webdriver.setUserAgent(opt.useragent);
    await webdriver.goto(task.url, opt.waitMs);
    await webdriver.waitForElement(opt.selector);
    const buffers = await screenshotOnce(opt);
    return mapFunc(buffers);
  });

  await end();
  return results.length > 1 ? results : results[0];
}