import type { CollectPositionsOptions, TrajectoryFrame, TrajectoryPositionStream } from '../index';
export declare const DEFAULT_POSITION_STREAM_MAX_BYTES: number;
type StreamChannels = {
    vector_keys: string[];
    signal_keys: string[];
};
export declare function suggest_frame_stride(n_frames: number, n_atoms: number, max_bytes?: number, channels?: StreamChannels): number;
export declare const parse_frame_signal: (value: unknown, key: string, n_atoms: number) => {
    values: number[];
    sample_shape: number[];
} | null;
export declare function accumulate_positions(total_frames: number, load_frame: (frame_number: number) => TrajectoryFrame | null | Promise<TrajectoryFrame | null>, options?: CollectPositionsOptions): Promise<TrajectoryPositionStream>;
export {};