

Please migrate your code to use the standardized for.of loop. The deprecated for each.in loop now presents a warning in the console ( bug 1293205).Using const in for.of loops now has a fresh binding for each iteration and no longer throws a Synta圎rror ( bug 1101653).const and let are now fully ES2015-compliant ( bug 950547).The () method is now available ( bug 1289340).The ES2015 () and () methods have been implemented ( bug 1121938).The ES2015 Symbol.toStringTag property has been implemented ( bug 1114580).
