import type { ToJsonSchemaOptions } from '../schema/Schema.js';
import type { OpenAPIV3 } from 'openapi-types';
/**
 * Fields for configuring an OpenAPI server variable object.
 *
 * Represents the configuration data needed to create a server variable,
 * including default values, enumeration constraints, and extensions.
 */
export type ServerVariableFields = {
    /** Human-readable description of the server variable */
    description?: string | undefined;
    /** Default value for the server variable */
    default: string;
    /** Array of allowed values for the server variable */
    enums?: string[] | undefined;
    /** OpenAPI specification extensions */
    extensionFields?: Record<string, unknown>;
};
/**
 * Represents an OpenAPI server variable object.
 *
 * Server variables provide parameterization for server URLs,
 * allowing dynamic server configuration with default values
 * and enumeration constraints.
 *
 * @example Basic server variable
 * ```typescript
 * const serverVar = new OasServerVariable({
 *   default: 'api',
 *   description: 'API version subdomain',
 *   enums: ['api', 'api-staging', 'api-dev']
 * });
 *
 * console.log(serverVar.default); // 'api'
 * console.log(serverVar.enums);   // ['api', 'api-staging', 'api-dev']
 * ```
 */
export declare class OasServerVariable {
    /** Type identifier for OAS server variable objects */
    oasType: 'serverVariable';
    /** Human-readable description of the server variable */
    description: string | undefined;
    /** Default value for the server variable */
    default: string;
    /** Array of allowed values for the server variable */
    enums?: string[] | undefined;
    /** OpenAPI specification extensions */
    extensionFields: Record<string, unknown> | undefined;
    constructor(fields: ServerVariableFields);
    isRef(): boolean;
    resolve(): OasServerVariable;
    resolveOnce(): OasServerVariable;
    toJsonSchema(_options: ToJsonSchemaOptions): OpenAPIV3.ServerVariableObject;
}
//# sourceMappingURL=ServerVariable.d.ts.map