/**
 * @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: {
    /** 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;
    /** 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";
    /** 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;
    /** 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;
    /** 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;
    /** Gemini API Key. From `GEMINI_API_KEY`. */
    geminiApiKey: string | 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;
    /** Base directory for filesystem operations. From `FS_BASE_DIRECTORY`. If set, operations are restricted to this path. Will be an absolute path. */
    fsBaseDirectory: string | undefined;
};
/**
 * 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;