helpers.js

/**
 *
 * @param {import("puppeteer").Page} page
 */
exports.scrapePrice = page => {
  return page.evaluate(() => {
    return parseFloat(
      document
        .querySelector('.up > div:first-child > div,.down > div:first-child > div')
        .textContent.replace(/,/g, '')
        .replace(/\$/g, '')
    )
  })
}

/**
 * @param {import("puppeteer").Page} page the Chromium page to block resources
 * @param {string[]} skip the resource types to skip
 * @param {function(string) : void} callback called when a resource is blocked, passes the blocked resource type
 */
exports.blockResources = async (page, skip, callback) => {
  await page.setRequestInterception(true)

  page.on('request', req => {
    const resourceType = req.resourceType()

    if (skip.includes(resourceType)) {
      callback(resourceType)

      req.abort()
    } else {
      req.continue()
    }
  })
}

exports.isLinux = () => process.platform === 'linux'