test registry

main.js

// yarn add request
const request = {
  get (uri, opts) {
    // lazy require
    const request = require('util').promisify(require('request'))
    const reqOpts = {
      method: 'GET',
      timeout: 30000,
      resolveWithFullResponse: true,
      json: true,
      uri,
      ...opts
    }

    return request(reqOpts)
  }
}

const registries = {
  npm: 'https://registry.npmjs.org',
  yarn: 'https://registry.yarnpkg.com',
  taobao: 'https://registry.npm.taobao.org',
  pnpm: 'https://registry.npmjs.org',
}

async function ping(registry) {
  await request.get(`${registry}/vue-cli-version-marker/latest`)
  return registry
}

async function main() {
  let faster = await Promise.race([
    ping(registries.yarn),
    ping(registries.taobao),
  ])
  console.log(faster)
}

main()