Source: \intersectionWith.js
import arrayMap from './.internal/arrayMap.js'
import baseIntersection from './.internal/baseIntersection.js'
import castArrayLikeObject from './.internal/castArrayLikeObject.js'
import last from './last.js'
/**
* This method is like `intersection` except that it accepts `comparator`
* which is invoked to compare elements of `arrays`. The order and references
* of result values are determined by the first array. The comparator is
* invoked with two arguments: (arrVal, othVal).
*
* @since 4.0.0
* @category Array
* @param {...Array} [arrays] The arrays to inspect.
* @param {Function} [comparator] The comparator invoked per element.
* @returns {Array} Returns the new array of intersecting values.
* @example
*
* const objects = [{ 'x': 1, 'y': 2 }, { 'x': 2, 'y': 1 }]
* const others = [{ 'x': 1, 'y': 1 }, { 'x': 1, 'y': 2 }]
*
* intersectionWith(objects, others, isEqual)
* // => [{ 'x': 1, 'y': 2 }]
*/
function intersectionWith(...arrays) {
let comparator = last(arrays)
const mapped = arrayMap(arrays, castArrayLikeObject)
comparator = typeof comparator == 'function' ? comparator : undefined
if (comparator) {
mapped.pop()
}
return (mapped.length && mapped[0] === arrays[0])
? baseIntersection(mapped, undefined, comparator)
: []
}
export default intersectionWith