export {};
declare global {
    interface ReadonlyArray<T> {
        /**
         * Calls a defined callback function on each pair of consecutive elements of
         * an array, and returns an array with the result of the callback function
         * inserted between the elements with which it was called.
         *
         * @param callback - A function that accepts two arguments. The
         *  interleave method calls the callback function one time for each
         *  pair of consecutive element in the array.
         *
         * @returns A new array with additional elements inserted between each
         *  element.
         */
        interleave<U>(callback: (previousElement: T, nextElement: T) => U): Array<T | U>;
    }
    interface Array<T> {
        /**
         * Calls a defined callback function on each pair of consecutive elements of
         * an array, and returns an array with the result of the callback function
         * inserted between the elements with which it was called.
         *
         * @param callback - A function that accepts two arguments. The
         *  interleave method calls the callback function one time for each
         *  pair of consecutive element in the array.
         *
         * @returns A new array with additional elements inserted between each
         *  element.
         */
        interleave<U>(callback: (previousElement: T, nextElement: T) => U): Array<T | U>;
    }
}