@modern-kit/utils/dist/array/difference/index.cjs

modern-kit/utils

'use strict';

function difference(firstArr, secondArr, iteratee) {
  if (!iteratee) {
    const secondSet2 = new Set(secondArr);
    return firstArr.filter((item) => !secondSet2.has(item));
  }
  const secondSet = new Set(secondArr.map((item) => iteratee(item)));
  return firstArr.filter((item) => !secondSet.has(iteratee(item)));
}

exports.difference = difference;
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