import { Diagnostic } from '@codemirror/lint';
import { SyntaxNode } from '@lezer/common';
import { EditorState } from '@codemirror/state';
import { ValueType } from '../types';
export declare class Parser {
    private readonly tree;
    private readonly state;
    private readonly diagnostics;
    constructor(state: EditorState);
    getDiagnostics(): Diagnostic[];
    analyze(): void;
    private diagnoseAllErrorNodes;
    checkAST(node: SyntaxNode | null): ValueType;
    private checkAggregationExpr;
    private checkBinaryExpr;
    private checkCallFunction;
    private checkAnchoredSmoothedExpr;
    private checkVectorSelector;
    private expectType;
    private addDiagnostic;
    private addDiagnosticWithSeverity;
    private isTopLevelDurationRangeExpr;
    /**
     * Returns the duration expression used as the subquery resolution step (after
     * the `:`). Lezer represents `SubqueryExpr` with direct children only
     * (`VectorSelector` plus one or two `DurationExpr` nodes), so the step is the
     * last direct `DurationExpr` when two are present. This avoids confusing
     * colons inside label matchers with the subquery colon.
     */
    private getSubqueryStepDurationExpr;
}