/**
 * Cycle forwards/backwards through a list of items
 *
 * @example
 * const elements = ['pen', 'pencil', 'chalk']
 *
 * cycle(elements, 'pencil', 1)
 * //=> 'chalk'
 *
 * cycle(elements, 'chalk', -1)
 * //=> 'pencil'
 *
 * cycle(elements, 'chalk', 1)
 * //=> 'pen'
 */
export declare function cycle<T>(items: T[], item: T, index: 1 | -1): T;
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