import type { ReactiveResource } from "@warp-drive/core/reactive";
import { Type } from "@warp-drive/core/types/symbols";
interface ConcatDerivation {
	(record: ReactiveResource & {
		[key: string]: unknown;
	}, options: Record<string, unknown> | null, _prop: string): string;
	[Type]: "concat";
}
/**
* A derivation for use by {@link ReactiveResource} that joins the given fields
* with the optional separator (or '' if no separator is provided).
*
* Generally you should not need to import and use this function directly.
*
* @example
* {
*   name: 'fullName',
*   kind: 'derived',
*   type: 'concat',
*   options: {
*     fields: ['firstName', 'lastName'],
*     separator: ' ',
*   },
* }
*/
export declare const concat: ConcatDerivation;
export {};