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1/**
2 * Returns the element at a specified index in a sequence or undefined if the index is out of range.
3 *
4 * @export
5 * @template T The type of the elements in the source sequence.
6 * @param {Iterable<T>} source iterable sequence to return the element from.
7 * @param {number} index The zero-based index of the element to retrieve.
8 * @returns {(T | undefined)} An iterable sequence that produces the element at the specified
9 * position in the source sequence, or undefined if the index is outside the bounds of the source sequence.
10 */
11export declare function elementAt<T>(source: Iterable<T>, index: number): T | undefined;