I just joined a project that is using this library in an Angular 2+ project.
When I run the app and use the library to export Excel files from the development server, it works find. When I run it locally, the excel files that get downloaded are corrupted and won’t open (“We found a problem with some content in “file”. Do you want us to try to recover as much as we can?..”)
It’s the same data on both sites, but just to be sure I tried it locally with a VERY simple array of objects and still got this error. It’s happening in Chrome and Edge.