/**
 * File scanner for the semantic search subsystem.
 *
 * Discovers project files for indexing by walking the directory tree,
 * respecting .gitignore rules, and classifying files by type.
 */
import type { FileType } from "./types.js";
/** A file discovered by the scanner, ready for indexing. */
export interface ScannedFile {
    /** Path relative to the project root (posix separators). */
    filePath: string;
    /** Detected file type. */
    fileType: FileType;
    /** File modification time in milliseconds since epoch. */
    mtime: number;
}
/**
 * Detect the {@link FileType} for a file path based on its extension.
 * Returns `null` for unrecognized extensions or files without an extension.
 */
export declare function detectFileType(filePath: string): FileType | null;
/**
 * Scan a project directory and return all indexable files.
 *
 * Walks the tree rooted at {@link projectRoot}, respects `.gitignore` rules,
 * skips binary / oversized files, and optionally includes memory files from
 * a global memory directory.
 */
export declare function scanProject(projectRoot: string, globalMemoryDir?: string, visibleDirs?: string[]): Promise<ScannedFile[]>;
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