/**
 * @fileoverview Loads, validates, and exports application configuration.
 * This module centralizes configuration management, sourcing values from
 * environment variables and `package.json`. It uses Zod for schema validation
 * to ensure type safety and correctness of configuration parameters.
 *
 * Key responsibilities:
 * - Load environment variables from a `.env` file.
 * - Read `package.json` for default server name and version.
 * - Define a Zod schema for all expected environment variables.
 * - Validate environment variables against the schema.
 * - Construct and export a comprehensive `config` object.
 * - Export individual configuration values like `logLevel` and `environment` for convenience.
 *
 * @module src/config/index
 */
/**
 * Main application configuration object.
 * Aggregates settings from validated environment variables and `package.json`.
 */
export declare const config: {
    /** Information from package.json. */
    pkg: {
        name: string;
        version: string;
    };
    /** MCP server name. Env `MCP_SERVER_NAME` > `package.json` name > "mcp-ts-template". */
    mcpServerName: string;
    /** MCP server version. Env `MCP_SERVER_VERSION` > `package.json` version > "0.0.0". */
    mcpServerVersion: string;
    /** Logging level. From `MCP_LOG_LEVEL` env var. Default: "debug". */
    logLevel: string;
    /** Absolute path to the logs directory. From `LOGS_DIR` env var. */
    logsPath: string | null;
    /** Runtime environment. From `NODE_ENV` env var. Default: "development". */
    environment: string;
    /** MCP transport type ('stdio' or 'http'). From `MCP_TRANSPORT_TYPE` env var. Default: "stdio". */
    mcpTransportType: "stdio" | "http";
    /** MCP session mode ('stateless', 'stateful', 'auto'). From `MCP_SESSION_MODE` env var. Default: "auto". */
    mcpSessionMode: "stateless" | "stateful" | "auto";
    /** HTTP server port (if http transport). From `MCP_HTTP_PORT` env var. Default: 3010. */
    /** HTTP server port (if http transport). From `MCP_HTTP_PORT` env var. Default: 3010. */
    mcpHttpPort: number;
    /** HTTP server host (if http transport). From `MCP_HTTP_HOST` env var. Default: "127.0.0.1". */
    mcpHttpHost: string;
    /** MCP endpoint path for HTTP transport. From `MCP_HTTP_ENDPOINT_PATH`. Default: "/mcp". */
    mcpHttpEndpointPath: string;
    /** Max retries for port binding. From `MCP_HTTP_MAX_PORT_RETRIES`. Default: 15. */
    mcpHttpMaxPortRetries: number;
    /** Delay between port binding retries. From `MCP_HTTP_PORT_RETRY_DELAY_MS`. Default: 50. */
    mcpHttpPortRetryDelayMs: number;
    /** Timeout for stale stateful sessions. From `MCP_STATEFUL_SESSION_STALE_TIMEOUT_MS`. Default: 1800000. */
    mcpStatefulSessionStaleTimeoutMs: number;
    /** Array of allowed CORS origins (http transport). From `MCP_ALLOWED_ORIGINS` (comma-separated). */
    mcpAllowedOrigins: string[] | undefined;
    /** Auth secret key (JWTs, http transport). From `MCP_AUTH_SECRET_KEY`. CRITICAL. */
    mcpAuthSecretKey: string | undefined;
    /** The authentication mode ('jwt' or 'oauth'). From `MCP_AUTH_MODE`. */
    mcpAuthMode: "jwt" | "oauth" | "none";
    /** OAuth 2.1 Issuer URL. From `OAUTH_ISSUER_URL`. */
    oauthIssuerUrl: string | undefined;
    /** OAuth 2.1 JWKS URI. From `OAUTH_JWKS_URI`. */
    oauthJwksUri: string | undefined;
    /** OAuth 2.1 Audience. From `OAUTH_AUDIENCE`. */
    oauthAudience: string | undefined;
    /** Development mode client ID. From `DEV_MCP_CLIENT_ID`. */
    devMcpClientId: string | undefined;
    /** Development mode scopes. From `DEV_MCP_SCOPES`. */
    devMcpScopes: string[] | undefined;
    /** OpenRouter App URL. From `OPENROUTER_APP_URL`. Default: "http://localhost:3000". */
    openrouterAppUrl: string;
    /** OpenRouter App Name. From `OPENROUTER_APP_NAME`. Defaults to `mcpServerName`. */
    openrouterAppName: string;
    /** OpenRouter API Key. From `OPENROUTER_API_KEY`. */
    openrouterApiKey: string | undefined;
    /** Default LLM model. From `LLM_DEFAULT_MODEL`. */
    llmDefaultModel: string;
    /** Default LLM temperature. From `LLM_DEFAULT_TEMPERATURE`. */
    llmDefaultTemperature: number | undefined;
    /** Default LLM top_p. From `LLM_DEFAULT_TOP_P`. */
    llmDefaultTopP: number | undefined;
    /** Default LLM max tokens. From `LLM_DEFAULT_MAX_TOKENS`. */
    llmDefaultMaxTokens: number | undefined;
    /** Default LLM top_k. From `LLM_DEFAULT_TOP_K`. */
    llmDefaultTopK: number | undefined;
    /** Default LLM min_p. From `LLM_DEFAULT_MIN_P`. */
    llmDefaultMinP: number | undefined;
    /** OAuth Proxy configurations. Undefined if no related env vars are set. */
    oauthProxy: {
        authorizationUrl: string | undefined;
        tokenUrl: string | undefined;
        revocationUrl: string | undefined;
        issuerUrl: string | undefined;
        serviceDocumentationUrl: string | undefined;
        defaultClientRedirectUris: string[] | undefined;
    } | undefined;
    /** Supabase configuration. Undefined if no related env vars are set. */
    supabase: {
        url: string;
        anonKey: string;
        serviceRoleKey: string | undefined;
    } | undefined;
    /** Absolute path to the ClinicalTrials.gov data directory. From `CLINICALTRIALS_DATA_PATH` env var. */
    clinicalTrialsDataPath: string | null;
    /** Maximum number of studies to fetch for analysis. From `MAX_STUDIES_FOR_ANALYSIS` env var. */
    maxStudiesForAnalysis: number;
};
/**
 * Configured logging level for the application.
 * Exported for convenience.
 */
export declare const logLevel: string;
/**
 * Configured runtime environment ("development", "production", etc.).
 * Exported for convenience.
 */
export declare const environment: string;