import { type ElementSymbol } from '../element/types';
import type * as math from '../math';
import type { AnyStructure } from '../structure/index';
import type { Pbc } from '../structure/pbc';
import type { TrajectoryFrame, TrajectoryPositionStream } from './index';
import type { WarnFn } from './parse/shared';
export declare const values_per_sample: (shape: number[]) => number;
export declare const is_supported_trajectory_signal_shape: (sample_shape: number[], n_atoms: number) => boolean;
export declare const convert_atomic_numbers: (numbers: number[]) => ElementSymbol[];
export declare const elem_symbol_from_token: (token: string) => ElementSymbol | undefined;
export declare const expand_ion_types: (ion_types: readonly string[], ion_counts: readonly number[]) => ElementSymbol[];
export declare const create_structure: (positions: number[][], elements: ElementSymbol[], lattice_matrix?: math.Matrix3x3, pbc?: Pbc, site_properties?: Record<string, unknown>[], warn?: WarnFn) => AnyStructure;
export declare const create_trajectory_frame: (positions: number[][], elements: ElementSymbol[], lattice_matrix: math.Matrix3x3 | undefined, pbc: Pbc | undefined, step: number, metadata?: Record<string, unknown>, site_properties?: Record<string, unknown>[], warn?: WarnFn) => TrajectoryFrame;
export declare const position_stream_transferables: (data: TrajectoryPositionStream) => ArrayBuffer[];
export declare const copy_numeric_fields: (target: Record<string, number>, source: Record<string, unknown>, fields: readonly string[]) => void;
export declare function calc_force_stats(forces: number[][]): {
    force_max: number;
    force_norm: number;
} | null;
export declare const split_lines: (content: string) => string[];
export declare const line_end: (text: string, from: number, to?: number) => number;
export declare const is_xyz_atom_line: (text: string, from?: number, to?: number) => boolean;
export type XyzFrameSpec = {
    start: number;
    line: number;
    num_atoms: number;
    comment: string;
    atoms_start: number;
    end: number;
};
export declare function iter_xyz_frames(text: string): Generator<XyzFrameSpec, XyzFrameSpec | null>;
export declare function count_xyz_frames(data: string, limit?: number): number;
export declare function has_multiple_xyz_frames(data: string): boolean;