/**
 * postgres-mcp - Token Validator
 *
 * JWT token validation with JWKS support.
 */
import type { TokenValidatorConfig, TokenValidationResult } from "./types.js";
/**
 * JWT Token Validator with JWKS support
 */
export declare class TokenValidator {
    private readonly config;
    private jwksCache;
    private jwksCacheTime;
    constructor(config: TokenValidatorConfig);
    /**
     * Validate a JWT token
     */
    validate(token: string): Promise<TokenValidationResult>;
    /**
     * Get or refresh JWKS cache
     */
    private getJWKS;
    /**
     * Handle validation errors
     */
    private handleValidationError;
    /**
     * Invalidate JWKS cache (for testing or forced refresh)
     */
    invalidateCache(): void;
}
/**
 * Create a token validator instance
 */
export declare function createTokenValidator(config: TokenValidatorConfig): TokenValidator;
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