/**
 * Vector Utils
 * A vector is an array of numbers e.g. [0, 3, 4].
 */
type Vector = ReadonlyArray<number>;
export declare function zip<T>(xs: ReadonlyArray<T>, ys: ReadonlyArray<T>): [T, T][];
export declare function zip<T>(...arrays: ReadonlyArray<T>[]): T[][];
export declare function map<T, U>(pair: [T, T], f: (a: T, i: number) => U): [U, U];
/**
 * Checks if the given vector contains only numbers and, optionally, is of the
 * right dimension (length).
 *
 * is([1, 2, 3]) -> true
 * is([1, "Hello", 3]) -> false
 * is([1, 2, 3], 1) -> false
 */
export declare function is(vec: unknown, dimension: 2): vec is [number, number];
export declare function is(vec: unknown, dimension?: number): vec is Vector;
export declare function normalize<V extends Vector>(v: V): V;
export declare function length(v: Vector): number;
export declare function dot(a: Vector, b: Vector): number;
export declare function add<V extends Vector>(...vecs: ReadonlyArray<V>): V;
export declare function subtract<V extends Vector>(v1: V, v2: V): V;
export declare function negate<V extends Vector>(v: V): V;
export declare function scale<V extends Vector>(v1: V, scalar: number): V;
export declare function equal(v1: Vector, v2: Vector, tolerance?: number): boolean;
export declare function codirectional(v1: Vector, v2: Vector, tolerance?: number): boolean;
export declare function collinear(v1: Vector, v2: Vector, tolerance?: number): boolean;
export declare function polarRadFromCart(v: readonly [number, number]): [number, number];
export declare function polarDegFromCart(v: readonly [number, number]): [number, number];
export declare function cartFromPolarRad(radius: number, theta?: number): [number, number];
export declare function cartFromPolarDeg(radius: number, theta?: number): [number, number];
export declare function rotateRad(v: readonly [number, number], theta: number): [number, number];
export declare function rotateDeg(v: readonly [number, number], theta: number): [number, number];
export declare function angleRad(v1: Vector, v2: Vector): number;
export declare function angleDeg(v1: Vector, v2: Vector): number;
export declare function projection<V extends Vector>(v1: V, v2: V): V;
export declare function round<V extends Vector>(vec: V, precision: V | number): V;
export declare function roundTo(coord: [number, number], increment: [number, number] | number): [number, number];
export declare function roundTo<V extends Vector>(vec: V, increment: V | number): V;
export declare function floorTo<V extends Vector>(vec: V, increment: V | number): V;
export declare function ceilTo<V extends Vector>(vec: V, increment: V | number): V;
export {};