export declare const ASC = "asc";
export declare const DESC = "desc";
/**
 * @typedef {object} PriorityMap
 * @property {Function} addItem Adds items to the priority map.
 * @property {Function} getItems Gets items from the passed map in a ASC or DESC order of priorities.
 */
/**
 * Creates a new priority map.
 *
 * @param {object} config The config for priority map.
 * @param {Function} config.errorPriorityExists The function to generate a custom error message if priority is already taken.
 * @param {Function} config.errorPriorityNaN The function to generate a custom error message if priority is not a number.
 * @returns {PriorityMap}
 */
export declare function createPriorityMap({ errorPriorityExists, errorPriorityNaN }?: {
    errorPriorityExists?: Function;
    errorPriorityNaN?: Function;
}): {
    addItem: (priority: number, item: unknown) => void;
    getItems: (order?: string) => unknown[];
};