don't open the cell panel until the cell has loaded

Author: severo

src/components/ParquetView/ParquetView.tsx

@@ -82,9 +82,14 @@ export default function ParquetView({ source, setProgress, setError }: ViewerPro
       if (cell?.col === col && cell.row === row) {
         return undefined
       }
+      const columnName = content?.dataframe.header[col]
+      if (columnName === undefined || !content?.dataframe.getCell({ row, column: columnName })) {
+        // don't open the cell panel until it has loaded
+        return undefined
+      }
       return { row, col }
     })
-  }, [])
+  }, [content])
   const onDoubleClickCell = useCallback((_event: React.MouseEvent, col: number, row: number) => {
     toggleCell(col, row)
   }, [toggleCell])