Any chance of using a newer IDE version? If you installed the Chrome web app it should have updated to 0.71.3 weeks ago - I updated to a newer Esprima version some time ago which handles that fine.
I guess you're on the native download? I've just updated that to the latest version now - but if you can use it the chrome app is preferable since it auto-updates.
Espruino is a JavaScript interpreter for low-power Microcontrollers. This site is both a support community for Espruino and a place to share what you are working on.
Any chance of using a newer IDE version? If you installed the Chrome web app it should have updated to 0.71.3 weeks ago - I updated to a newer Esprima version some time ago which handles that fine.
I guess you're on the native download? I've just updated that to the latest version now - but if you can use it the chrome app is preferable since it auto-updates.