import type { Variable } from "../../references/Variable";
import type { Expr } from "../../types";
import { CypherFunction } from "./CypherFunctions";
/**
 * @see {@link https://neo4j.com/docs/cypher-manual/current/functions/list/#functions-keys | Cypher Documentation}
 * @group Functions
 * @category List
 */
export declare function keys(expr: Expr): CypherFunction;
/**
 * @see {@link https://neo4j.com/docs/cypher-manual/current/functions/list/#functions-labels | Cypher Documentation}
 * @group Functions
 * @category List
 */
export declare function labels(nodeRef: Expr): CypherFunction;
/**
 * @see {@link https://neo4j.com/docs/cypher-manual/current/functions/list/#functions-range | Cypher Documentation}
 * @group Functions
 * @category List
 */
export declare function range(start: Expr | number, end: Expr | number, step?: Expr | number): CypherFunction;
/**
 * @see {@link https://neo4j.com/docs/cypher-manual/current/functions/list/#functions-reverse-list | Cypher Documentation}
 * @group Functions
 * @category List
 */
export declare function reverse(list: Expr): CypherFunction;
/**
 * @see {@link https://neo4j.com/docs/cypher-manual/current/functions/list/#functions-tail | Cypher Documentation}
 * @group Functions
 * @category List
 */
export declare function tail(list: Expr): CypherFunction;
/**
 * @see {@link https://neo4j.com/docs/cypher-manual/current/functions/list/#functions-tobooleanlist | Cypher Documentation}
 * @group Functions
 * @category List
 */
export declare function toBooleanList(list: Expr): CypherFunction;
/**
 * @see {@link https://neo4j.com/docs/cypher-manual/current/functions/list/#functions-tofloatlist | Cypher Documentation}
 * @group Functions
 * @category List
 */
export declare function toFloatList(list: Expr): CypherFunction;
/**
 * @see {@link https://neo4j.com/docs/cypher-manual/current/functions/list/#functions-tointegerlist | Cypher Documentation}
 * @group Functions
 * @category List
 */
export declare function toIntegerList(list: Expr): CypherFunction;
/**
 * @see {@link https://neo4j.com/docs/cypher-manual/current/functions/list/#functions-tostringlist | Cypher Documentation}
 * @group Functions
 * @category List
 */
export declare function toStringList(list: Expr): CypherFunction;
/** Reduce a list by executing given expression.
 * @see {@link https://neo4j.com/docs/cypher-manual/current/functions/list/#functions-reduce | Cypher Documentation}
 * @group Functions
 * @category List
 * @example
 * ```ts
 * Cypher.reduce(totalAge, new Cypher.Literal(0), n, Cypher.nodes(p), Cypher.plus(totalAge, n.property("age")));
 * ```
 * _Cypher:_
 * ```cypher
 * reduce(totalAge = 0, n IN nodes(p) | totalAge + n.age)
 * ```
 */
export declare function reduce(accVariable: Variable, defaultValue: Expr, variable: Variable, listExpr: Expr, mapExpr: Expr): CypherFunction;