Transpiled FilterByIteratee

filter-by-iteratee.js

"use strict";

// Function definition
var filterByIteratee = function filterByIteratee(array, iteratee) {

  // Empty object to store attributes as we encounter them
  var previousAttributeNames = {};

  return array.filter(function (item) {
    // Get the right value
    var itemValue = iteratee(item);

    // Check if we have already stored this item
    if (previousAttributeNames.hasOwnProperty(itemValue)) return false;else {
      // Store the item so next time we encounter it we filter it out
      previousAttributeNames[itemValue] = true;
      return true;
    }
  });
};

// Usage
var uniqueLinks = filterByIteratee(social_post_link, function (item) {
  return item.activity_attributes[0].attribute_value;
});