The last of new SharePoint Framework Extensions types (for now :)) is ListView Command Set. With it you can add custom button/command to your List View Toolbar.
I want to create simple SharePoint List for tasks. When I select one of them, I want to put it to Office 365 Planner app to specific person. Connection between SharePoint List and Office 365 Planner will be represented by Microsoft Graph API. Continue reading “SPFx Extensions – ListView Command Set connected to Office 365 Planner via Graph API”