import type { DocSearchMatch } from "./types.js";
/**
 * Search across all supported-format documents in a directory tree.
 *
 * @param projectRoot - Trusted project root.
 * @param startPath - Project-root-relative file or directory path.
 * @param query - Search query string or regex pattern.
 * @param maxResults - Maximum matches to return (default 50).
 * @param regex - If true, treat query as regex pattern.
 * @param headingOnly - If true, restrict matches to heading lines.
 * @returns Search matches with path, line, snippet, and heading context.
 */
export declare function searchDocuments(projectRoot: string, startPath: string, query: string, maxResults?: number, regex?: boolean, headingOnly?: boolean): DocSearchMatch[];
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