Async Generator functions and a new iteration protocol (used by for-await-of loops and yield* expressions), to streamline consumption or implementation of streaming data sources.


Established standard

Status in Chromium


Enabled by default (tracking bug) in:

  • Chrome for desktop release 63
  • Chrome for Android release 63
  • Android WebView release 63

Consensus & Standardization

After a feature ships in Chrome, the values listed here are not guaranteed to be up to date.


Search tags

JavaScript, es6, esnext, es7, es8, harmony, async, iteration, await, for-await-of, generator, asyncIterator,

Last updated on 2020-11-09