import { TokenGenerator, Token } from '../../api/Token';
export declare class ExpirableToken implements Token {
    original: Token;
    expires: number;
    /**
     * @param original The original token that has been generated
     * @param expires The expiration date as timestamp
     */
    constructor(original: Token, expires: number);
    readonly value: string;
}
export declare class ExpirableTokenGenerator implements TokenGenerator {
    private delegate;
    private validityDuration;
    constructor(delegate: TokenGenerator, validityDuration: number);
    generate(): Promise<ExpirableToken>;
}