import type { ToJsonSchemaOptions } from '../schema/Schema.js';
import type { OpenAPIV3 } from 'openapi-types';
import type { OasServerVariable } from '../serverVariable/ServerVariable.js';
/**
 * Constructor fields for {@link OasServer}.
 *
 * Defines the configuration options available when creating server instances,
 * including URL, description, variables, and extension fields.
 */
export type ServerFields = {
    description?: string | undefined;
    url: string;
    variables?: Record<string, OasServerVariable> | undefined;
    extensionFields?: Record<string, unknown>;
};
/**
 * Represents a Server Object in the OpenAPI Specification.
 *
 * The `OasServer` class encapsulates server connectivity information, including
 * the server URL, optional description, and variable definitions for URL templating.
 * Servers are used to specify different environments (development, staging, production)
 * or different API versions that clients can connect to.
 *
 * @example Basic server
 * ```typescript
 * const server = new OasServer({
 *   url: 'https://api.example.com/v1',
 *   description: 'Production API server'
 * });
 * ```
 *
 * @example Server with variables
 * ```typescript
 * const server = new OasServer({
 *   url: 'https://{environment}.example.com/{version}',
 *   description: 'Configurable API server',
 *   variables: {
 *     environment: new OasServerVariable({
 *       enum: ['api', 'staging', 'dev'],
 *       default: 'api',
 *       description: 'API environment'
 *     }),
 *     version: new OasServerVariable({
 *       default: 'v1',
 *       description: 'API version'
 *     })
 *   }
 * });
 * ```
 */
export declare class OasServer {
    /** Type identifier for this OAS server */
    oasType: 'server';
    /** Human-readable description of the server */
    description: string | undefined;
    /** Server URL with optional variable templating */
    url: string;
    /** Variable definitions for URL templating */
    variables: Record<string, OasServerVariable> | undefined;
    /** Custom extension fields (x-* properties) */
    extensionFields: Record<string, unknown> | undefined;
    /**
     * Creates a new OasServer instance.
     *
     * @param fields - Server configuration including URL, description, and variables
     */
    constructor(fields: ServerFields);
    /**
     * Determines if this server is a reference object.
     *
     * @returns Always false since servers are not reference objects in OpenAPI
     */
    isRef(): boolean;
    /**
     * Resolves this server object.
     *
     * @returns The server instance itself since it's already a concrete object
     */
    resolve(): OasServer;
    /**
     * Resolves this server object one level.
     *
     * @returns The server instance itself since it's already a concrete object
     */
    resolveOnce(): OasServer;
    /**
     * Converts this OAS server to an OpenAPI v3 JSON schema representation.
     *
     * @param _options - Conversion options (currently unused for server objects)
     * @returns OpenAPI v3 server object with URL, description, and variables
     */
    toJsonSchema(_options: ToJsonSchemaOptions): OpenAPIV3.ServerObject;
}
//# sourceMappingURL=Server.d.ts.map