import { OrderSpecification, QueryNode, VariableAssignmentQueryNode } from '..';
/**
 * Traverses recursively through Unary/Binary operations, extracts all variable definitions and replaces them by their
 * variable nodes
 * @param {QueryNode} node
 * @param variableAssignmentsList: (will be modified) list to which to add the variable assignment nodes
 */
export declare function extractVariableAssignments(node: QueryNode, variableAssignmentsList: VariableAssignmentQueryNode[]): QueryNode;
/**
 * Wraps a queryNode in a list of variable assignments (the logical counterpart to extractVariableAssignments)
 */
export declare function prependVariableAssignments(node: QueryNode, variableAssignmentsList: ReadonlyArray<VariableAssignmentQueryNode>): QueryNode;
export declare function extractVariableAssignmentsInOrderSpecification(orderSpecification: OrderSpecification, variableAssignmentsList: VariableAssignmentQueryNode[]): OrderSpecification;