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Runtime specification

By default, all our runners have their timezone set to UTC, regardless of their location.

Built-in Node.js modules

  • assert
  • buffer
  • crypto
  • dns
  • path
  • querystring
  • readline
  • stream
  • string_decoder
  • stream
  • timers
  • tls
  • url
  • util
  • zlib

See the built-in module documentation on the official Node.js site

NPM packages

These are the currently available runtimes and the included external NPM dependencies.


Main updates are Playwright 1.12.2, Puppeteer 10.0.0 and Node.js 14.x


Main updates are Playwright 1.4.0, Puppeteer 2.0.0 and Node.js 12.x