import ByteArray from '../internal/ByteArray.js';
import GroupSendFullToken from './GroupSendFullToken.js';
/**
 * A minimal cacheable representation of an endorsement.
 *
 * This contains the minimal information needed to represent this specific endorsement; it must be
 * converted to a {@link GroupSendFullToken} before sending to the chat server. (It is valid to do
 * this immediately; it just uses up extra space.)
 *
 * Generated by {@link GroupSendEndorsement#toToken}.
 */
export default class GroupSendToken extends ByteArray {
    constructor(contents: Uint8Array<ArrayBuffer>);
    /**
     * Converts this token to a "full token", which can be sent to the chat server as authentication.
     *
     * {@code expiration} must be the same expiration that was in the original
     * {@link GroupSendEndorsementsResponse}, or the resulting token will fail to verify.
     */
    toFullToken(expiration: Date): GroupSendFullToken;
}