function (data, arr, options) {
  return arr.map(function(lookup) {
    return expander.process(data, lookup, options);
  });
}
function (data, arr, options) {
  return arr.map(function(lookup) {
    return expander.process(data, lookup, options);
  });
}
function ( data , arr , options ) { return arr . map ( function ( lookup ) { return expander . process ( data , lookup , options ) ; } ) ; }
recursively expand an array until it doesn't contain any template strings
recursively expand an array until it doesn t contain any template strings