import type { DropboxAccessor } from '../../accessor/dropbox.ts';
import { PathSpec } from '../../types.ts';
/**
 * Use Dropbox file search to narrow grep/rg scopes to candidate files.
 *
 * Search results are compared against each scope on `path_lower` (Dropbox
 * paths are case-insensitive) and mapped back to mount paths from
 * `path_display`. Per-scope results are sorted component-wise so they line
 * up with the order a sorted readdir walk would visit, and each `rawPath`
 * is rebased onto the scope's as-typed spelling so output labels match a
 * walk's.
 *
 * Returns null whenever the narrowed set cannot be trusted as a superset
 * of what a full scan would read (API failure, or the 10,000-match search
 * ceiling), so the caller falls back to the full scan.
 */
export declare function narrowPaths(accessor: DropboxAccessor, query: string, paths: readonly PathSpec[]): Promise<PathSpec[] | null>;
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