Problem Using FeatureLayer with ES6 Module

[JoseCamacho]

Hi!

I am trying to use the ArcGIS Javascript Library with ES Modules and the app for some reason breaks when trying to add a FeatureLayer, this code is working fine using the CDN examples:

Here is a snippet of the code I'm testing:

if I remove the Feature Layer the map loads fine but once I add the FeatureLayer the application errors with the following:

any pointers or ideas of what could be causing this error would be really appreciated.

[ReneRubalcava]

What does your build set up look like? We have a number of ESM samples here you can check against. https://github.com/Esri/jsapi-resources/tree/master/esm-samples

[JoseCamacho]

I'm using webpack. I just updated following the instructions in the link you shared and got the same error

[ReneRubalcava]

Not sure. Does this happen in a particular browser/os combo? I put that snippet in a webpack build here and the build seems to be working ok.

https://github.com/odoe/jsapi-webpack-fl

Do you have a repro project we can test against?

[JoseCamacho]

I'm using it in a Ruby on Rails application using the webpacker gem I can provide an app that is presenting the error but I'm not 100% sure it would be very helpful because you will need a fully working rails dev env for it to work. I'm kind of a beginner in both webpack and the web packer gem but whatever I can do to help and figure out what's going on I'm happy to do.

[ReneRubalcava]

Ha, it's been a minute since I used ruby/rails, but I'll see what I can do. If you have a project, that would help, but I can try and put one together.

[JoseCamacho]

Haha, no problem. I will provide a demo app for you to test in a little bit. Thanks!

[JoseCamacho]

So it turns out that, for some reason unknown to me, after upgrading the webpacker gem (rails wrapper for webpack) the FeatureLayers started working.

Thank you very much for your help @ReneRubalcava you pointed me into the direction for the solution, I appreciate it very much.