Deep Pluck for Object Properties

pluck.js

/**
 * Deep Pluck a value from an object by string.
 * Give the method a dot delemited string to a property of the given
 * object. It will recurse over it, until it hits the target property
 * or, if it doesn't exist, it will return an empty string.
 *
 * @plug Special thanks to user 'clocklear' for his help with this Deep Pluck
 *
 *
 * @param  {object} object [Target option retrieve property from]
 * @param  {string} property [Property path]
 * @param  {string} objectName [Name of the targetObject if its part of the
 *                              property path]
 * @return {mixed}
 */
function pluck (object, property, objectName) {

  var props;

  if (typeof property !== 'string' && typeof object !== 'object') return;

  var keys = Object.keys(object);
  if (property.indexOf('.') > -1) {
    props = property.split('.');
  } else {
    props = property;
  }

  // If objectName isn't given, assume the first value in the property
  // string, is the name of the given object
  if (props[0] === objectName) {
    props.splice(0, 1);
  } else {
    var propString = props;
    props = [];
    props.push(propString);
  }

  if (keys.indexOf(props[0]) > -1) {
    if (props.length > 1) {
      return pluck(
        object[props[0]],
        props.splice(1, props.length).join('.'),
        objectName
      );
    } else { // Base case
      return object[props[0]];
    }
  } else {
    return '';
  }

}