import type { Comparer } from '../../types/Comparer.js';
declare global {
    interface ReadonlyArray<T> {
        /**
         * Finds elements in this array that don't appear in the other.
         *
         * @param other - The other array to compare with.
         * @param comparerFn - An optional function that accepts two arguments.
         *  The union method calls the comparerFn function to determine the
         *  equality of values. Triple equal `===` comparison is used by default.
         *
         * @returns A new array containing only the elements in this array that
         *  don't appear in the other.
         */
        except(other: ReadonlyArray<T>, comparerFn?: Comparer<T>): Array<T>;
    }
    interface Array<T> {
        /**
         * Finds elements in this array that don't appear in the other.
         *
         * @param other - The other array to compare with.
         * @param comparerFn - An optional function that accepts two arguments.
         *  The union method calls the comparerFn function to determine the
         *  equality of values. Triple equal `===` comparison is used by default.
         *
         * @returns A new array containing only the elements in this array that
         *  don't appear in the other.
         */
        except(other: ReadonlyArray<T>, comparerFn?: Comparer<T>): Array<T>;
    }
}