Tree breaking in IE 11: 'Symbol' is undefined

[saydmateen]

When I load the tree in IE 11 it throw's an error and doesn't' allow the tree to load. Installing the babel/polyfill fixes the issue but I can't include an extra library at the moment. Do you know which function is causing the issue so I could manually create the polyfill?

[saydmateen]

I believe it's caused by a bug with the latest version of Babel?
babel/babel#8947

[deltoss]

The error occurs due to the fact polyfills aren't included as part of the plugin. But there's no point as even if I did, the plugin doesn't behave as expected on IE 11.

For example, among other things, the texts could go missing:

If you'd like IE 11 support, feel free to submit a PR for the below branch. It has the babel polyfills installed and configured, but still at the stage of not behaving correctly for IE 11.
https://github.com/deltoss/d3-mitch-tree/tree/feature/IE11-Fix-Attempt

[saydmateen]

Sounds good, I will take a look at the branch and let you know what I find. Thanks.