/**
 * Searches the provided array for the provided element using the binary search
 * algorithm.
 * @param array Sorted array (in an order compatible with `compareFn`) in which
 * to find the provided element.
 * @param element Element to find in the array.
 * @param compareFn Comparison function.
 * @returns The index of the element if it is contained in the array; otherwise,
 * the inverted insertion point `-i - 1`.
 */
export declare function binarySearch<T>(array: T[], element: T, compareFn: (v1: T, v2: T) => number): number;