import { CypherASTNode } from "../../CypherASTNode";
import type { CypherEnvironment } from "../../Environment";
import type { Expr } from "../../types";
/** Represents a Cypher Function, all Cypher functions provided by the library extend from this class, and it can be used to use custom functions
 * @see {@link https://neo4j.com/docs/cypher-manual/current/functions/ | Cypher Documentation}
 * @group Functions
 * @example
 * ```ts
 * const myFunction = new Cypher.Function("myFunction", [new Cypher.Literal("test"), new Cypher.Param("test2")]);
 * ```
 * _Cypher:_
 * ```cypher
 * myFunction("test", $param0)
 * ```
 */
export declare class CypherFunction extends CypherASTNode {
    protected name: string;
    private readonly params;
    constructor(name: string, params?: Array<Expr>, namespace?: string);
    /** @internal */
    getCypher(env: CypherEnvironment): string;
    protected addParam(param: Expr): void;
    protected serializeParams(env: CypherEnvironment): string;
}