This week JS weak refs will be enabled on nightly and will ride the trains, ultimately shipping in Firefox 79.
It has been developed behind the javascript.options.experimental.weakrefs preference (which will be renamed to javascript.options.weakrefs). Status in other browsers: - Chrome: will ship in 84 - Safari: in development Bug to turn on by default: https://bugzilla.mozilla.org/show_bug.cgi?id=1639246 This feature was previously discussed in this "Intent to prototype" thread: https://groups.google.com/forum/?pli=1#!searchin/mozilla.dev.platform/weak$20references%7Csort:date/mozilla.dev.platform/N_9e_c-euSo/ZtToFnzYAAAJ Jon _______________________________________________ dev-platform mailing list dev-platform@lists.mozilla.org https://lists.mozilla.org/listinfo/dev-platform