/**
 * An enumeration. Must be inherited. Do not instantiate directly.
 * Also, this class uses the ES6 Map, therefore a polyfill must
 * be supplied.
 *
 * @public
 * @interface
 */
export default class Enum {
    /**
     * Looks up an enumeration item; given the enumeration type and the enumeration
     * item's value. If no matching item can be found, a null value is returned.
     *
     * @public
     * @static
     * @param {Function} type - The enumeration type.
     * @param {string} code - The enumeration item's code.
     * @returns {Enum|null}
     */
    public static fromCode(type: Function, code: string): Enum | null;
    /**
     * Looks up an enumeration item; given the enumeration type and the enumeration
     * item's value. If no matching item can be found, a null value is returned.
     *
     * @public
     * @static
     * @param {Function} type - The enumeration type.
     * @param {number} mapping - The enumeration item's mapping value.
     * @returns {Enum|null}
     */
    public static fromMapping(type: Function, mapping: number): Enum | null;
    /**
     * Returns the enumeration's items (given an enumeration type).
     *
     * @public
     * @static
     * @param {Function} type - The enumeration to list.
     * @returns {Array}
     */
    public static getItems(type: Function): any[];
    /**
     * @param {string} code - The unique code of the enumeration item.
     * @param {string} description - A description of the enumeration item.
     * @param {number=} mapping - An alternate key value (used when external systems identify enumeration items using integer values).
     */
    constructor(code: string, description: string, mapping?: number | undefined);
    /**
     * The unique code.
     *
     * @public
     * @returns {string}
     */
    public get code(): string;
    /**
     * The description.
     *
     * @public
     * @returns {string}
     */
    public get description(): string;
    /**
     * An alternate key value (used when external systems identify enumeration items
     * using numeric values). This value will not be present for all enumerations.
     *
     * @public
     * @returns {number|null}
     */
    public get mapping(): number | null;
    /**
     * Returns true if the provided {@link Enum} argument is equal
     * to the instance.
     *
     * @public
     * @param {Enum} other
     * @returns {boolean}
     */
    public equals(other: Enum): boolean;
    /**
     * Returns the JSON representation.
     *
     * @public
     * @returns {string}
     */
    public toJSON(): string;
    /**
     * Returns a string representation.
     *
     * @public
     * @returns {string}
     */
    public toString(): string;
    #private;
}