Probably what MS meant was, JScript v11 can be run in newer ES environments (thus the minimal changes), but not that JScript supports newer ES syntax.
EDIT: see more findings about javascript/jscript support & !JSCRIPTVER in this thread.
Probably what MS meant was, JScript v11 can be run in newer ES environments (thus the minimal changes), but not that JScript supports newer ES syntax.
EDIT: see more findings about javascript/jscript support & !JSCRIPTVER in this thread.