21 lines
848 B
TypeScript
21 lines
848 B
TypeScript
/**
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* Finds the index of the first occurrence of a value in an array.
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*
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* This method is similar to `Array.prototype.indexOf`, but it also finds `NaN` values.
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* It uses strict equality (`===`) to compare elements.
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*
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* @template T - The type of elements in the array.
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* @param {ArrayLike<T> | null | undefined} array - The array to search.
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* @param {T} searchElement - The value to search for.
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* @param {number} [fromIndex] - The index to start the search at.
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* @returns {number} The index (zero-based) of the first occurrence of the value in the array, or `-1` if the value is not found.
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*
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* @example
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* const array = [1, 2, 3, NaN];
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* indexOf(array, 3); // => 2
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* indexOf(array, NaN); // => 3
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*/
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declare function indexOf<T>(array: ArrayLike<T> | null | undefined, searchElement: T, fromIndex?: number): number;
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export { indexOf };
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