//#region src/array/difference.ts
/**
* Computes the difference between two arrays.
*
* This function takes two arrays and returns a new array containing the elements
* that are present in the first array but not in the second array. It effectively
* filters out any elements from the first array that also appear in the second array.
*
* @template T
* @param firstArr - The array from which to derive the difference. This is the primary array
* from which elements will be compared and filtered.
* @param secondArr - The array containing elements to be excluded from the first array.
* Each element in this array will be checked against the first array, and if a match is found,
* that element will be excluded from the result.
* @returns A new array containing the elements that are present in the first array but not
* in the second array.
*
* @example
* const array1 = [1, 2, 3, 4, 5];
* const array2 = [2, 4];
* const result = difference(array1, array2);
* // result will be [1, 3, 5] since 2 and 4 are in both arrays and are excluded from the result.
*/
function difference(firstArr, secondArr) {
	const secondSet = new Set(secondArr);
	return firstArr.filter((item) => !secondSet.has(item));
}
//#endregion
exports.difference = difference;
