import { Flags } from "llibdatastructures";
export declare enum PopMessageFlag {
    Delete = 1
}
export declare class PopMessage {
    readonly uid: string | number;
    readonly size: number;
    flags: Flags;
    /**
     * Constructs a new pop message.
     * @param uid the unique identifier.
     * @param size the size.
     * @param flags the flags.
     */
    constructor(uid: string | number, size: number, flags?: Flags);
    /**
     * Gets the UID as a string, even if it's a number.
     */
    get uid_string(): string;
    /**
     * Gets the contents of the message.
     * @returns the contents as a string.
     */
    contents(): Promise<string>;
}