import { Thunk } from '..';
/**
 * Implements '@indexed' decorator factory
 * This is used to specify complex service types which are need to expose
 * types containing indexed definition, for example:
 *
 * @example
 * ~~~typescript
 * import { type } from '@imqueue/rpc';
 *
 * @indexed('[fieldName: string]: any')
 * class Schema {
 *     [fieldName: string]: any
 * }
 * ~~~
 *
 * @return {(constructor: Function) => void}
 */
export declare function indexed(indexTypedef: string | Thunk): any;