How to use the puppeteer-core/package.json.puppeteer function in puppeteer-core

async function downloadChromium() {
  const browserFetcher = puppeteer.createBrowserFetcher({
    path: chromeTempPath,
    host: downloadHost,
  })

  const revision =
    process.env.PUPPETEER_CHROMIUM_REVISION ||
    process.env.npm_config_puppeteer_chromium_revision ||
    process.env.npm_package_config_puppeteer_chromium_revision ||
    pptrCoreJson.puppeteer.chromium_revision
  const revisionInfo = browserFetcher.revisionInfo(revision)

  // If already downloaded
  if (revisionInfo.local) return revisionInfo

  try {
    console.log(`Downloading Chromium r${revision}...`)
    const newRevisionInfo = await browserFetcher.download(revisionInfo.revision)
    console.log(`Chromium downloaded to ${newRevisionInfo.folderPath}`)

    let localRevisions = await browserFetcher.localRevisions()
    localRevisions = localRevisions.filter(r => r !== revisionInfo.revision)

    // Remove previous revisions
    const cleanupOldVersions = localRevisions.map(r => browserFetcher.remove(r))
    await Promise.all(cleanupOldVersions)