How to get kernel of mainareawidget?

[ThibautDR]

Hi Terlan, your question is, I believe, close to a questin I had asked a few months ago:

Best way to integrate a Kernel with a React Widget in a JupyterLab Extension

Hello everyone, I’m working on an extension which consists in a React Widget. Looking at different extension examples I had created a Factory to create my widget and everything works fine. I defined the following behavior of opening the widget for the .pipeline files: // Add the default behavior of opening the widget for .pipeline files app.docRegistry.addFileType( { name: 'react-pipeline', displayName: 'Pipeline', extensions: ['.p…