export default class List<T> extends Array<T> {
    /**
     * Appends elements to the list if the list does not already contain them.
     * Returns true if all elements were inserted.
     * Elements are not inserted if they already exist.
     * @param elements - Elements that will be appended to the list.
     * @example
     * const a = new List(1, 2)
     * a.add(2) // false
     * a.add(2, 3) // false
     * a.add(4) // true
     */
    add(...elements: T[]): boolean;
    /**
     * Removes elements from the list.
     * Returns false if an element was not contained in the list.
     * @param elements - Elements that will be removed from the list.
     * @example
     * const a = new List(1, 2)
     * a.remove(1) // true
     * a.remove(2, 3) // false
     * a.remove(4) // false
     */
    remove(...elements: T[]): boolean;
    /**
     * Returns a list containing all elements that only this list OR only the other list contains.
     * @param other - The list to compare this list to.
     * @example
     * const a = new List(1, 2)
     * const b = new list(2, 3)
     * a.uncovered(b) // [ 1, 3 ]
     */
    diff(other: T[]): List<T>;
    /**
     * Returns a list containing all elements of this list that are contained in the other array/list.
     * @param other - The list to compare this list to.
     * @example
     * const a = new List(1, 2)
     * const b = new list(2, 3)
     * a.uncovered(b) // [ 2 ]
     */
    covered(other: T[]): List<T>;
    /**
     * Returns a list containing all elements of this list that are not contained in the other array/list.
     * @param other - The list to compare this list to.
     * @example
     * const a = new List(1, 2)
     * const b = new list(2, 3)
     * a.uncovered(b) // [ 1 ]
     */
    uncovered(other: T[]): List<T>;
}