import { QueryNode } from './base';
/**
 * A node that evaluates to a predefined literal value
 */
export declare class LiteralQueryNode extends QueryNode {
    readonly value: unknown;
    constructor(value: unknown);
    equals(other: this): boolean;
    describe(): string;
}
/**
 * A node that evaluates to null
 */
export declare class NullQueryNode extends QueryNode {
    describe(): string;
    static readonly NULL: NullQueryNode;
}
/**
 * A node that evaluates either to true or to false
 */
export declare class ConstBoolQueryNode extends QueryNode {
    readonly value: boolean;
    constructor(value: boolean);
    static readonly TRUE: ConstBoolQueryNode;
    static readonly FALSE: ConstBoolQueryNode;
    static for(value: boolean): ConstBoolQueryNode;
    describe(): string;
}
/**
 * A node that evaluates to a constant integer
 */
export declare class ConstIntQueryNode extends QueryNode {
    readonly value: number;
    constructor(value: number);
    static readonly ZERO: ConstIntQueryNode;
    static readonly ONE: ConstIntQueryNode;
    describe(): string;
}