How we built it

WeakMap (ES6)

WeakMaps are key/value maps in which keys are objects.

Comments

Turned on by default in WebKit nightly. It was implemented behind a flag in Chrome 18, until it was turned on by default.

Documentation

Specification

Established standard

Status in Chromium

Enabled by default (launch bug) in:

  • Chrome for desktop release 36
  • Chrome for Android release 36
  • Opera release 23
  • Opera for Android release 23

Consensus & Standardization

Owner

Last updated on 2016-01-27