import type { BoxAccessor } from '../../accessor/box.ts';
import { PathSpec } from '../../types.ts';
/**
 * Use Box content search to narrow grep/rg scopes to candidate files.
 *
 * Each scope is resolved to its Box folder id and searched with that id as
 * the `ancestor_folder_ids` scope; hits are mapped back to mount paths from
 * their `path_collection` ancestor chain, sorted component-wise so they line
 * up with a sorted readdir walk, 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, the 10,000-match ceiling, or a
 * scope that no longer resolves to a folder), so the caller falls back to the
 * full scan.
 */
export declare function narrowPaths(accessor: BoxAccessor, query: string, paths: readonly PathSpec[]): Promise<PathSpec[] | null>;
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