Why can't I access the accessor function from a column definition ?

[nanafan93]

Given an array of column definitions, why can't I access the accessor function property from it ? I am trying to calculate what data is visible in the table and want to get the value of each cell from each row. I want to use the accessor function from my column definition for this purpose but typescript complains that the property accessorFn doesn't exist on the column definition.

  const columns: ColumnDef<Blah>[] = [
    {
      accessorFn: (it) => it.name,
      id: 'name',
    },
  ];

  console.log(columns[0].accessorFn);