import { Vec3 } from '../types/types.js';
/**
 * Calculates the linear distance between two points in three-dimensional space.
 * @param pos1 The first position.
 * @param pos2 The second position.
 * @returns The linear distance between the two positions in kilometers.
 */
export declare function linearDistance<D extends number>(pos1: Vec3<D>, pos2: Vec3<D>): D;