NWJS Version : v0.25.0-beta1 SDK
Operating System : Windows 10 32-bit (Creators Update)
This version of NW.js comes with Chromium 61.0.3163.39, which has support for ES6 modules.
One way of utilizing said support is through usage of
I can see this error on Linux/Windows with nwjs-sdk-v0.25.0-beta1.
Thanks to @Yonezpt for the link to upstream issue. I can confirm it's the same. The upstream fix is cherry-picked in git and will be available in the next nightly build.
Some of my users get this error with 0.27.2. with MIME type of "text/plain"