[d565449] | 1 | import baseFindIndex from './_baseFindIndex.js';
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| 2 | import baseIsNaN from './_baseIsNaN.js';
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| 3 | import strictLastIndexOf from './_strictLastIndexOf.js';
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| 4 | import toInteger from './toInteger.js';
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| 5 |
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| 6 | /* Built-in method references for those with the same name as other `lodash` methods. */
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| 7 | var nativeMax = Math.max,
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| 8 | nativeMin = Math.min;
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| 9 |
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| 10 | /**
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| 11 | * This method is like `_.indexOf` except that it iterates over elements of
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| 12 | * `array` from right to left.
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| 13 | *
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| 14 | * @static
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| 15 | * @memberOf _
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| 16 | * @since 0.1.0
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| 17 | * @category Array
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| 18 | * @param {Array} array The array to inspect.
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| 19 | * @param {*} value The value to search for.
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| 20 | * @param {number} [fromIndex=array.length-1] The index to search from.
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| 21 | * @returns {number} Returns the index of the matched value, else `-1`.
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| 22 | * @example
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| 23 | *
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| 24 | * _.lastIndexOf([1, 2, 1, 2], 2);
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| 25 | * // => 3
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| 26 | *
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| 27 | * // Search from the `fromIndex`.
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| 28 | * _.lastIndexOf([1, 2, 1, 2], 2, 2);
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| 29 | * // => 1
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| 30 | */
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| 31 | function lastIndexOf(array, value, fromIndex) {
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| 32 | var length = array == null ? 0 : array.length;
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| 33 | if (!length) {
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| 34 | return -1;
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| 35 | }
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| 36 | var index = length;
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| 37 | if (fromIndex !== undefined) {
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| 38 | index = toInteger(fromIndex);
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| 39 | index = index < 0 ? nativeMax(length + index, 0) : nativeMin(index, length - 1);
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| 40 | }
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| 41 | return value === value
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| 42 | ? strictLastIndexOf(array, value, index)
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| 43 | : baseFindIndex(array, baseIsNaN, index, true);
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| 44 | }
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| 45 |
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| 46 | export default lastIndexOf;
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