export interface ServerConfig {
    port?: number | string;
    routerDir?: string;
    staticDir?: string;
}
/**
 * Validates server configuration
 * Throws ConfigurationError if validation fails
 */
export declare function validateServerConfig(config: ServerConfig): void;
/**
 * Validates environment variable configuration
 * Throws ConfigurationError if required env vars are invalid
 */
export declare function validateEnvConfig(env: Record<string, string | undefined>): void;
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