Power BI addin/custom connector?

Hi Cookistador ,

Thank you for reaching out to us with your question. I understand that you're in the process of migrating from Tableau to Power BI and you're looking for a way to replicate the functionality of a custom connector you've been using in Tableau. In Power BI, you can indeed create custom connectors, but the process is different from Tableau. Power BI custom connectors are developed using Power Query M language and not JavaScript. You can refer the following links to create a custom connector in Power BI:

Create a custom connector from scratch | Microsoft Learn

Power BI Custom Connector: Connect to Any Data Sources. Hello World! - RADACAD

Best Regards