The current goal of this plugin is to display a web based UI with a draggable component, allowing to drag and drop an audio file out of the plugin window. When the dragging event is received on the UI, the JavaScript frontend emits an event for the JUCE backend to handle. The PluginEditor then calls the JUCE method performExternalDragDropOfFiles(), handling the JUCE native drag and drop logic.
However this works as expected on Windows, an assert gets triggered on macOS in "juce_Windowing_mac.mm" when dropping the file. This seems to be due to the fact that no actual dragging event was received in JUCE prior to the call to performExternalDragDropOfFiles().
Note: to properly trigger the assert, ensure to be attached to the host process where the plugin is loaded.
See the associated topic on the JUCE forum.
Clone JUCE
git submodule update --init
Build project from cmake (Xcode version)
cmake . -G Xcode -B build