import type { FrameIndex, FrameLoader, ParseProgress, TrajectoryFrame, TrajectoryMetadata } from './index';
export declare class TrajFrameReader implements FrameLoader {
    private readonly format;
    private global_numbers?;
    constructor(filename: string);
    get_total_frames(data: string | ArrayBuffer): Promise<number>;
    build_frame_index(data: string | ArrayBuffer, sample_rate: number, on_progress?: (progress: ParseProgress) => void): Promise<FrameIndex[]>;
    load_frame(data: string | ArrayBuffer, frame_number: number): Promise<TrajectoryFrame | null>;
    extract_plot_metadata(data: string | ArrayBuffer, options?: {
        sample_rate?: number;
        properties?: string[];
    }, on_progress?: (progress: ParseProgress) => void): Promise<TrajectoryMetadata[]>;
    private load_xyz_frame;
    private load_ase_frame;
    private parse_ase_metadata;
}