Can't use ES6 features with QtWebKit running on WebKit-602.1.20

[asharma]

I am working on integrating the modern maintained version of QtWebKit running on WebKit 602.1.20 with my Qt 5.12.X version.
Though when ran https://html5test.com/ on QWebView after building it, I learned that most of the ES6 features are unavailable on it. Is there some specific build flag that I have to use to build the WebKit to get them enabled? I already tried building it with -DENABLE_ES6_MODULES=ON with no success.

I am using the Perl script given in the steps here: https://github.com/qtwebkit/qtwebkit/wiki/Building-QtWebKit-on-Windows-(OUTDATED)

I appreciate the help.

Thanks

[Konstantin Tokarev]

QtWebKit 5.212.x doesn't support ES6 modules. This feature will be available in upcoming release from qtwebkit-dev branch.