| 1 | /**
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| 2 | * Returns the last element of an array.
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| 3 | *
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| 4 | * This function takes an array and returns the last element of the array.
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| 5 | * If the array is empty, the function returns `undefined`.
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| 6 | *
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| 7 | * Unlike some implementations, this function is optimized for performance
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| 8 | * by directly accessing the last index of the array.
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| 9 | *
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| 10 | * @template T - The type of elements in the array.
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| 11 | * @param {[...T[], T]} arr - The array from which to get the last element.
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| 12 | * @returns {T} The last element of the array, or `undefined` if the array is empty.
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| 13 | *
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| 14 | * @example
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| 15 | * const arr = [1, 2, 3];
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| 16 | * const lastElement = last(arr);
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| 17 | * // lastElement will be 3
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| 18 | *
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| 19 | * const emptyArr: number[] = [];
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| 20 | * const noElement = last(emptyArr);
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| 21 | * // noElement will be undefined
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| 22 | */
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| 23 | declare function last<T>(arr: readonly [...T[], T]): T;
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| 24 | /**
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| 25 | * Returns the last element of an array.
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| 26 | *
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| 27 | * This function takes an array and returns the last element of the array.
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| 28 | * If the array is empty, the function returns `undefined`.
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| 29 | *
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| 30 | * Unlike some implementations, this function is optimized for performance
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| 31 | * by directly accessing the last index of the array.
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| 32 | *
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| 33 | * @template T - The type of elements in the array.
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| 34 | * @param {T[]} arr - The array from which to get the last element.
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| 35 | * @returns {T | undefined} The last element of the array, or `undefined` if the array is empty.
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| 36 | *
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| 37 | * @example
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| 38 | * const arr = [1, 2, 3];
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| 39 | * const lastElement = last(arr);
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| 40 | * // lastElement will be 3
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| 41 | *
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| 42 | * const emptyArr: number[] = [];
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| 43 | * const noElement = last(emptyArr);
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| 44 | * // noElement will be undefined
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| 45 | */
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| 46 | declare function last<T>(arr: readonly T[]): T | undefined;
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| 47 |
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| 48 | export { last };
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