import { QueryNode } from './base';
/**
 * A node that evaluates in a JSON-like object structure with properties and values
 */
export declare class ObjectQueryNode extends QueryNode {
    readonly properties: ReadonlyArray<PropertySpecification>;
    constructor(properties: ReadonlyArray<PropertySpecification>);
    /**
     * An empty object
     */
    static EMPTY: ObjectQueryNode;
    describe(): string;
}
/**
 * Specifies one property of a an ObjectQueryNode
 */
export declare class PropertySpecification extends QueryNode {
    readonly propertyName: string;
    readonly valueNode: QueryNode;
    constructor(propertyName: string, valueNode: QueryNode);
    describe(): string;
}
/**
 * A node that that merges the properties of multiple nodes. If multiple objects define the same property, the last one
 * will win. Set properties to null to remove them.
 *
 * This operation behaves like the {...objectSpread} operator in JavaScript, or the MERGE function in AQL.
 *
 * The merge is NOT recursive.
 */
export declare class MergeObjectsQueryNode extends QueryNode {
    readonly objectNodes: ReadonlyArray<QueryNode>;
    constructor(objectNodes: ReadonlyArray<QueryNode>);
    describe(): string;
}
/**
 * A node that evaluates to the entries of all properties of an object (each as a two-item list with key and value).
 *
 * For non-object values, this evaluates to the empty list
 */
export declare class ObjectEntriesQueryNode extends QueryNode {
    readonly objectNode: QueryNode;
    constructor(objectNode: QueryNode);
    describe(): string;
}