@gleefullychill/lotide/countOnly.js

A library based off of lodash for a student project

const countOnly = function(allItems, itemsToCount) {
  const results = [];
  for (const item of allItems) {
    if (itemsToCount[item]) {
      if (results[item]) {
        results[item] = results[item] + 1;
      } else {
        results[item] = 1;
      }
    }
  }
  return results;
};

// const firstNames = [
//   "Karl",
//   "salima",
//   "Agouhanna",
//   "Fang",
//   "Kavith",
//   "Jason",
//   "Salima",
//   "Fang",
//   "Joe"
// ];
module.exports = countOnly;
// const result1 = countOnly(firstNames, {"Jason": true, "Karima": true, "Fang": true, "Agouhanna": false});
// assertEqual(result1["Jason"], 1);
// assertEqual(result1["Karima"], undefined);
// assertEqual(result1["Fang"], 2);
// assertEqual(result1["Agouhanna"], undefined);