And…

Of course i solve it 5 mins after posting a question about it, after spending full days on it xD

The problem was i was trying to save what i was fetching to the cache, which is apparently not available and messes everything up when it’s called inside wkwebkit.

Meh

Your server should handle the cors, not your frontend.

I solved this problem!

I was specifying this in quasar.conf.js to fix some routing issues that I was seeing when running “quasar dev” :

extendWebpack(cfg) { cfg.output = { publicPath: "/", }; }

cfg.output was not set when running “quasar dev” but it is set when running “quasar build -m cordova -T ios” and so I was inadvertently overwriting it.

Changing it to this let me get further:

extendWebpack(cfg) { if (!cfg.output) { cfg.output = { publicPath: "/", }; } }

If you are interested in updating to Babel 7.x (which I have done), there is a great tool here: https://github.com/babel/babel-upgrade