/**
 * OAuth Token Response (RFC 6749 Section 5.1)
 */
export interface TokenResponse {
    access_token: string;
    token_type: "Bearer";
    expires_in: number;
    refresh_token?: string;
    scope?: string;
}
/**
 * OAuth Introspection Response (RFC 7662 Section 2.2)
 */
export interface IntrospectResponse {
    active: boolean;
    scope?: string;
    client_id?: string;
    username?: string;
    token_type?: string;
    exp?: number;
    iat?: number;
    sub?: string;
    aud?: string;
    iss?: string;
}
/**
 * OAuth Error Response (RFC 6749 Section 5.2)
 */
export interface ErrorResponse {
    error: string;
    error_description?: string;
    error_uri?: string;
}
/**
 * OAuth Token Serialiser
 *
 * Serializes OAuth token responses per RFC 6749.
 * Note: These are NOT JSON:API format - they follow OAuth RFC formats.
 */
export declare class OAuthTokenSerialiser {
    /**
     * Serializes an access token response.
     */
    serialiseTokenResponse(params: {
        accessToken: string;
        expiresIn: number;
        refreshToken?: string;
        scope?: string;
    }): TokenResponse;
    /**
     * Serializes a token introspection response.
     */
    serialiseIntrospectResponse(params: {
        active: boolean;
        scope?: string;
        clientId?: string;
        username?: string;
        tokenType?: string;
        exp?: number;
        iat?: number;
        sub?: string;
        aud?: string;
        iss?: string;
    }): IntrospectResponse;
    /**
     * Serializes an OAuth error response.
     */
    serialiseErrorResponse(error: string, errorDescription?: string, errorUri?: string): ErrorResponse;
}
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