/**
 * This function takes an array and a value. If that value already exists in the array, it will
 * be removed. If not, it will be added.
 *
 * @param array An array of values to add or remove from/to
 * @param value The value to add or remove
 * @returns the new array
 */
export declare function addOrRemove<T>(array: Array<T>, value: T): T[];