14 lines
639 B
JavaScript
14 lines
639 B
JavaScript
const require_isArrayLike = require("../predicate/isArrayLike.js");
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//#region src/compat/array/lastIndexOf.ts
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function lastIndexOf(array, searchElement, fromIndex) {
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if (!require_isArrayLike.isArrayLike(array) || array.length === 0) return -1;
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const length = array.length;
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let index = fromIndex ?? length - 1;
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if (fromIndex != null) index = index < 0 ? Math.max(length + index, 0) : Math.min(index, length - 1);
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if (Number.isNaN(searchElement)) {
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for (let i = index; i >= 0; i--) if (Number.isNaN(array[i])) return i;
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}
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return Array.from(array).lastIndexOf(searchElement, index);
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}
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//#endregion
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exports.lastIndexOf = lastIndexOf;
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