URLSearchParams Vanilla vs Lodash

/* ========== Vanilla JS ========== */

const applyValue = (existing, newValue) =>
  !existing
    ? newValue
    : !Array.isArray(existing)
      ? [existing, newValue]
      : [...existing, newValue];

const paramsToObject = (params) => {
  const res = {};
  for (const [name, val] of searchParams) {
    Object.assign(res, {
      [name]: applyValue(res[name], val)
    });
  }
  return res;
};

const search = '?day=Friday&item=Eat&item=Sleep';
const searchParams = new URLSearchParams(search);
console.log(paramsToObject(searchParams));

/* ========== Lodash ========== */

const { assign, isArray, reduce } = _;

const applyValue = (existing, newValue) =>
  !existing
    ? newValue
    : !isArray(existing)
      ? [existing, newValue]
      : [...existing, newValue];

const paramsToObject = (params) =>
  reduce([...searchParams.entries()], (res, [name, val]) =>
    assign(res, { [name]: applyValue(res[name], val) }), {});

const search = '?day=Friday&item=Eat&item=Sleep';
const searchParams = new URLSearchParams(search);
console.log(paramsToObject(searchParams));