basant307/AI_Governance_Project

1import baseFlatten from './_baseFlatten.js';2import baseIteratee from './_baseIteratee.js';3import baseRest from './_baseRest.js';4import baseUniq from './_baseUniq.js';5import isArrayLikeObject from './isArrayLikeObject.js';6import last from './last.js';7 8/**9 * This method is like `_.union` except that it accepts `iteratee` which is10 * invoked for each element of each `arrays` to generate the criterion by11 * which uniqueness is computed. Result values are chosen from the first12 * array in which the value occurs. The iteratee is invoked with one argument:13 * (value).14 *15 * @static16 * @memberOf _17 * @since 4.0.018 * @category Array19 * @param {...Array} [arrays] The arrays to inspect.20 * @param {Function} [iteratee=_.identity] The iteratee invoked per element.21 * @returns {Array} Returns the new array of combined values.22 * @example23 *24 * _.unionBy([2.1], [1.2, 2.3], Math.floor);25 * // => [2.1, 1.2]26 *27 * // The `_.property` iteratee shorthand.28 * _.unionBy([{ 'x': 1 }], [{ 'x': 2 }, { 'x': 1 }], 'x');29 * // => [{ 'x': 1 }, { 'x': 2 }]30 */31var unionBy = baseRest(function(arrays) {32  var iteratee = last(arrays);33  if (isArrayLikeObject(iteratee)) {34    iteratee = undefined;35  }36  return baseUniq(baseFlatten(arrays, 1, isArrayLikeObject, true), baseIteratee(iteratee, 2));37});38 39export default unionBy;40