import type { CstNode, CstElement, IToken } from 'chevrotain';
/**
 * Check if a CstElement is a CstNode (has children) vs an IToken (leaf).
 */
export declare function isCstNode(element: CstElement): element is CstNode;
/**
 * Get the start position (line, column) of a CST element.
 * Lines and columns are 1-based (as provided by Chevrotain).
 */
export declare function getStartPosition(element: CstElement): {
    line: number;
    column: number;
};
/**
 * Get the end position (line, column) of a CST element.
 */
export declare function getEndPosition(element: CstElement): {
    line: number;
    column: number;
};
/**
 * Recursively find the first token in a CST node.
 */
export declare function findFirstToken(node: CstNode): IToken | undefined;
/**
 * Recursively find the last token in a CST node.
 */
export declare function findLastToken(node: CstNode): IToken | undefined;
/**
 * Collect all tokens in a CST node in order of appearance.
 */
export declare function collectTokens(node: CstNode): IToken[];
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