/**
 * Fence Classifier - Classifies fence lines with priority order
 *
 * Priority order (to avoid ambiguity):
 * 1. ---cell ...--- (cell open)
 * 2. ---end--- (cell close)
 * 3. --- chunk:... --- (chunk marker)
 * 4. bare --- (prompt fence open/close)
 */
export type FenceClassification = {
    kind: 'cell_open';
    cellType: string;
    meta: Record<string, string>;
} | {
    kind: 'cell_end';
} | {
    kind: 'chunk_marker';
    id: string;
    meta: Record<string, string>;
} | {
    kind: 'prompt_fence';
} | null;
/**
 * Classify a fence line according to priority order
 *
 * @param line - Raw line string to classify
 * @returns Classification result or null if not a fence line
 */
export declare function classifyFenceLine(line: string): FenceClassification;