[d565449] | 1 | import arrayMap from './_arrayMap.js';
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| 2 | import baseIntersection from './_baseIntersection.js';
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| 3 | import baseRest from './_baseRest.js';
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| 4 | import castArrayLikeObject from './_castArrayLikeObject.js';
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| 5 | import last from './last.js';
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| 6 |
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| 7 | /**
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| 8 | * This method is like `_.intersection` except that it accepts `comparator`
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| 9 | * which is invoked to compare elements of `arrays`. The order and references
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| 10 | * of result values are determined by the first array. The comparator is
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| 11 | * invoked with two arguments: (arrVal, othVal).
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| 12 | *
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| 13 | * @static
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| 14 | * @memberOf _
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| 15 | * @since 4.0.0
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| 16 | * @category Array
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| 17 | * @param {...Array} [arrays] The arrays to inspect.
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| 18 | * @param {Function} [comparator] The comparator invoked per element.
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| 19 | * @returns {Array} Returns the new array of intersecting values.
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| 20 | * @example
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| 21 | *
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| 22 | * var objects = [{ 'x': 1, 'y': 2 }, { 'x': 2, 'y': 1 }];
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| 23 | * var others = [{ 'x': 1, 'y': 1 }, { 'x': 1, 'y': 2 }];
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| 24 | *
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| 25 | * _.intersectionWith(objects, others, _.isEqual);
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| 26 | * // => [{ 'x': 1, 'y': 2 }]
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| 27 | */
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| 28 | var intersectionWith = baseRest(function(arrays) {
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| 29 | var comparator = last(arrays),
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| 30 | mapped = arrayMap(arrays, castArrayLikeObject);
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| 31 |
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| 32 | comparator = typeof comparator == 'function' ? comparator : undefined;
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| 33 | if (comparator) {
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| 34 | mapped.pop();
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| 35 | }
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| 36 | return (mapped.length && mapped[0] === arrays[0])
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| 37 | ? baseIntersection(mapped, undefined, comparator)
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| 38 | : [];
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| 39 | });
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| 40 |
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| 41 | export default intersectionWith;
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