index.js
function selectPointers (params) {
  if (params.pointers) {
    delete params.pointers['-_id'];
    params.select = Object.keys(params.pointers).join(' ');
  } else {
    delete params.select;
  }
  return params.select;
}
function selectPointers (params) {
  if (params.pointers) {
    delete params.pointers['-_id'];
    params.select = Object.keys(params.pointers).join(' ');
  } else {
    delete params.select;
  }
  return params.select;
}
function selectPointers ( params ) { if ( params . pointers ) { delete params . pointers [ '-_id' ] ; params . select = Object . keys ( params . pointers ) . join ( ' ' ) ; } else { delete params . select ; } return params . select ; }
Sets the `select` parameter to the keys of the `pointers` and ensures `_id`
can't be hidden.

@param {Object} params
@return {String} select
@api private
Sets the select parameter to the keys of the pointers and ensures _id can t be hidden .