html_url,issue_url,id,node_id,user,created_at,updated_at,author_association,body,reactions,performed_via_github_app,issue https://github.com/pydata/xarray/issues/4238#issuecomment-660569640,https://api.github.com/repos/pydata/xarray/issues/4238,660569640,MDEyOklzc3VlQ29tbWVudDY2MDU2OTY0MA==,1217238,2020-07-19T01:30:29Z,2020-07-19T01:30:29Z,MEMBER,"Yes, this would be very welcome! In theory `concat` might be able to use `@overload` to indicate a more precise type, but `Union[Dataset, DataArray]` would be a good start.","{""total_count"": 1, ""+1"": 1, ""-1"": 0, ""laugh"": 0, ""hooray"": 0, ""confused"": 0, ""heart"": 0, ""rocket"": 0, ""eyes"": 0}",,660112216