import type { GcrPackage } from '../gcr-reader.js';
type FsLike = {
    existsSync(path: string): boolean;
    readdirSync(path: string, opts: {
        withFileTypes: true;
    }): Array<{
        name: string;
        isDirectory(): boolean;
    }>;
};
export declare class AssetIndex {
    private _paths;
    get paths(): string[];
    get size(): number;
    register(path: string | null | undefined): void;
    has(path: string | null | undefined): boolean;
    [Symbol.iterator](): Iterator<string>;
    _normalize(path: string): string;
    static fromGcrPackage(pkg: GcrPackage): Promise<AssetIndex>;
    static fromDirectory(datasetPath: string, fs: FsLike): AssetIndex;
}
export {};
//# sourceMappingURL=asset-index.d.ts.map